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Intra-abdominal hypertension/abdominal compartment syndrome of pediatric patients in critical care settings

  • Vesna G. Marjanovic EMAIL logo , Ivana Z. Budic , Maja D. Zecevic , Marija M. Stevic and Dusica M. Simic
Published/Copyright: July 17, 2025

Abstract

Background

Intra-abdominal hypertension (IAH)/abdominal compartment syndrome (ACS) is one of the rarer clinical entities in the pediatric population, carrying a high degree of morbidity and mortality. The focus of this review is on assessing pathophysiological changes of organ systems in pediatric patients with risk factors for the occurrence of IAH/ACS based on the evaluation of diagnostic modalities and therapeutic strategies.

Methodology

A comprehensive literature search of indexed databases was performed, aiming to identify, review, and evaluate published articles on IAH/ACS. The search was focused on studies examining pathophysiology, risk factors, diagnostic approaches, and management strategies.

Results

The main risk factors encompass diminished abdominal wall compliance, increased intraluminal and abdominal contents, and capillary leak/fluid resuscitation. Diagnostic tools include clinical and imaging findings, intra-abdominal pressure (IAP) monitoring, and parameters of tissue perfusion. Therapeutic strategies involve non-surgical and surgical management of IAH/ACS in pediatric patients.

Conclusion

Timely and continuous evaluation of IAP and parameters of tissue perfusion is crucial for the early diagnosis of IAH/ACS and implementing non-surgical procedures, reducing the need for surgical procedures. Future research should focus on the usefulness of advanced non-invasive monitoring technologies and the identification of predictors of increased IAP in the early implementation of personalized therapeutic strategies.

1 Introduction

Intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) represent life-threatening clinical conditions. IAH in children is defined as a sustained (continuous) or repeated (oscillatory) pathological elevation in intra-abdominal pressure (IAP) above 10 mmHg, while ACS is defined as IAH associated with new or worsening organ dysfunction [1,2]. The incidence of IAH/ACS in pediatric patients is different. It ranges from 10 to 20% in neonatal intensive care unit (NICU) and pediatric intensive care unit (PICU) to 17–63% in specialized pediatric PICUs that hospitalize patients after liver transplantation [3,4,5]. Therein, the incidence of IAH occurs about two to three times more frequently compared to ACS. Thus, the incidence of IAH was 9 and 12.6%, and ACS was 4% in both studies [3,4]. Regarding the mortality rates in the NICU and PICU, it differs from 40 to 100%. Higher mortality rate was recorded in neonatal patients and patients who did not receive decompressive laparotomy (DL), in comparison to older children who underwent DL [4,6,7,8,9,10]. The reason for the high mortality in children lies in the untimely recognition and rapid progression of IAH into ACS, as well as their inadequate treatment compared to adults [1,3,11,12,13]. That can be explained by their smaller abdominal cavity, inability to increase abdominal volume without a significant increase in IAP, despite their greater elasticity of the abdominal wall compared to adults [14]. This indicates that ACS in children is still poorly understood by pediatric intensivists.

The aim of this review is to give insight on the assessment of pathophysiological changes of organ systems in pediatric patients with risk factors for the IAH/ACS, based on the evaluation of clinical and imaging findings, levels of IAP, abdominal perfusion pressure (APP), near-infrared spectroscopy (NIRS), hemodynamic parameters, and biomarkers. This information can help in earlier diagnosis and implementation of therapeutic procedures, with improvement in the survival of these patients. Due to the limited information associated with the untimely recognition and diagnosis of IAH/ACS in children, many issues addressed in this report can be widely applied in the treatment of critically ill pediatric patients in the PICU.

2 Pathophysiological changes in pediatric patients with IAH/ACS

Elevated IAP can cause pathophysiological changes in abdominal and extra-abdominal organs due to direct compression and impaired oxygen delivery to tissues, leading to ischemia, anaerobic metabolism, and lactic acidosis [4]. Usually, the initial increase in IAP is well tolerated in children due to good compliance of their abdominal wall. However, with further elevation of IAP, IAH occurs, which leads to the compression of abdominal blood vessels, splanchnic hypoperfusion, ischemia of the intestines, and enterocyte necrosis. This disrupts the barrier function of the intestinal wall, leading to bacterial translocation, the release of pro-inflammatory cytokines into the systemic circulation, the development of a systemic inflammatory response, and sepsis. Due to altered inflammatory processes and lymphatic drainage in the intestines, intestinal edema develops, which further increases the degree of IAH and leads to the development of ACS [11]. In addition to the pathophysiological changes in the abdomen, changes in the respiratory, cardiovascular, urinary, and neurological systems can occur [15]. Thus, elevated IAP causes diaphragm elevation, increased intrathoracic pressure, and lung tissue compression, which reduces functional residual capacity and tidal volume and leads to atelectasis. These lung changes alter the ventilation-perfusion ratio within the lungs, increase intrapulmonary shunt, and lead to hypoxemia and hypercapnia. Consequently, these patients often require mechanical ventilation, which may prolong their hospitalization in the PICU and increase their mortality [5]. On the other hand, increased intrathoracic pressure reduces preload into the right heart, decreases cardiac output due to compression of the inferior vena cava and portal vein, and increases systemic afterload due to direct compression of the pulmonary and abdominal vascular beds. That can lead to the development of heart failure in pediatric patients even with mild IAH [16,17]. Reduced cardiac output leads to systemic hypoperfusion and rapid multiorgan failure [12]. Renal hypoperfusion arises due to decreased cardiac output and compression of the renal artery and vein. It leads to oliguria as the first sign of progression of IAH to ACS, and later anuria [4]. Reduced liver perfusion in IAH can lead to decreased lactate clearance and glucose metabolism disturbances [4,12]. Finally, increased intrathoracic pressure in IAH is transmitted to the superior vena cava system, impeding venous return from the brain. This can lead to increased intracranial pressure, which is clinically significant in patients with head trauma or brain edema [17].

3 Risk factors for the development of IAH/ACS in children

During each hospitalization of pediatric patients in the PICU, it is necessary to screen risk factors for IAH/ACS [1,18]. The main risk factors for increased IAP in children include diminished abdominal wall compliance, increased intraluminal and abdominal contents, and capillary leak and fluid resuscitation [1,12].

3.1 Diminished abdominal wall compliance

Diminished abdominal wall compliance can be expected in patients with acute respiratory insufficiency accompanied by high intrathoracic pressure, trauma, or extensive burns (circumferential 3rd degree burns of the abdominal wall), prone positioning, and head elevation higher than 30°, obesity, gastroschisis, omphalocele, diaphragmatic hernia, or closure of the abdominal wall under increased tension.

3.2 Increased intraluminal and abdominal contents

The intraluminal content increases with the accumulation of air, fluid, or stool in the intestines in patients with gastroparesis, intussusception, adynamic ileus, pseudo-obstruction of the colon, constipation, or Hirschsprung’s disease. The abdominal content increases with the accumulation of air, fluid, and blood in the abdomen in patients with abdominal trauma, retroperitoneal bleeding, hemoperitoneum and pneumoperitoneum, peritonitis or enterocolitis, splenomegaly and hepatomegaly, intra-abdominal tumors, liver dysfunction with ascites, pancreatitis, kidney, liver, and intestine transplantation, and extracorporeal membrane oxygenation. All these clinical conditions characterized by diminished abdominal wall compliance, increased intraluminal and abdominal contents, are the cause of primary ACS.

3.3 Capillary leak/fluid resuscitation

Secondary ACS is defined as a condition that does not originate from the abdominopelvic region but is associated with capillary leak seen during aggressive fluid resuscitation in critically ill patients or in diseases associated with capillary leak syndrome [2]. Thus, aggressive fluid resuscitation with crystalloids increases the risk of ACS in pediatric trauma patients and hemato-oncological patients in the PICU as well as in those with septic, cardiogenic, or toxic shock syndrome, acidosis with pH <7.2, hypotension, hypothermia, massive transfusion, coagulopathy, pancreatitis, oliguria, severe burns, laparotomy for damage control, or SIRS, and after liver or kidney transplantation, or heart transplant rejection [19,20,21].

The most common associated pediatric conditions that predispose patients to ACS are abdominal trauma with intensive bleeding, ileus, necrotizing enterocolitis, significant gas accumulation without occlusive bowel lesions, ascites, diaphragmatic hernia, septic shock followed by massive fluid resuscitation, and multiorgan distress syndrome [4,15,21,22,23,24]. Thereby, pediatric patients with risk factors for IAH/ACS occurrence should be recognized in a timely manner during their admission to the PICU.

4 Diagnosis of IAH/ACS

4.1 Clinical and imaging findings

The correct diagnosis of ACS can be made based on clinical indicators associated with risk factors and confirmed with a recording of elevated IAP. In this syndrome, a rapid onset of abdominal distension is registered, which limits the capacity of lung expansion and leads to reduced tissue oxygen saturation, refractory hypotension, and oliguria/anuria [25,26]. The syndrome can develop rapidly or in days after the injury, so high clinical suspicion and observation of these patients is of utmost importance, especially patients who have suffered multiple traumas, required assisted mechanical ventilation, or had a history of abdominal surgery or abdominal disease, which are followed with increased IAP [27]. The management of these patients should occur in a PICU, since their high complexity and the list of extensive differential diagnoses. Therefore, daily physical examination and observing parameters such as blood pressure, intake, and excretion measurements are critical to its diagnosis. Methods such as manual palpation of the abdomen and abdominal circumference measurement are insensitive in correlation with increased IAP, which is why it is not recommended. Until now, many clinicians still use this method in everyday clinical practice. However, abdominal distension, a plateau pressure of more than 30 cm H2O, and hypothermia have been identified as independent predictors of IAH on the admission day of these patients [3,28]. The most common imaging findings on magnetic resonance and computed tomography are ascites, inferior vena cava compression, heterogeneous perfusion of the kidneys, elevation of diaphragm, basal lung atelectasis, abnormal enhancement of the bowel wall, and subcutaneous edema [29]. The imaging findings were not proved specific for ACS but should raise suspicion for ACS in children.

4.2 IAP monitoring

The most accurate method to confirm the diagnosis of IAH/ACS is measuring the IAP [3,4,8,9,30,31]. IAP measurement should be obtained if one or more risk factors for IAH/ACS are present [1,18]. IAP measurement technique can be achieved using direct and indirect methods. The direct measurement of the pressure in the peritoneal cavity is an invasive method, which shows greater accuracy in measuring IAP compared to the intravesical method. This method is conducted by placing a needle or an abdominal catheter into the peritoneal space. It is suggested for patients for whom an abdominal catheter has previously been placed as part of a therapeutic procedure. Complications of this method of measuring IAP include bowel perforation and peritoneal contamination [32].

Indirect measurement is noninvasive and can be measured in different intracorporal cavities such as the stomach, rectum, uterus, and bladder. Indirect estimation of IAP taken from the bladder cavity is the gold standard and is recommended by the Abdominal Compartment Society [1,4,18,31,32,33]. It is performed after bladder catheterization with a Foley catheter and connecting the Foley to a three-way stopcock adjusted to the level of the mid-axillary line at the iliac crest to zero the transducer. The sterile saline in volume 1 ml/kg to up to a maximum of 25 ml is then injected into the bladder. The measurement of IAP should be taken with the patient in a supine position and at end-expiration [1]. The most common reasons for errors in implementing this method are the presence of air bubbles in the system, incorrect positioning of the pressure transducer, and obstruction of the urinary catheter. When instilling a larger volume of fluid into the urinary bladder than recommended, falsely elevated IAP values are obtained, which can lead to unnecessary therapeutic procedures [31,34]. Prolonged use of a standard latex urinary catheter and continuous measurement of IAP can increase the risk of urinary infection [21]. However, there are catheters for continuous monitoring of IAP (Accuryn, for example) that do not have a higher risk of catheter-associated urinary tract Infection. This could be an area to be explored in future research, as continuous real-time monitoring of IAP has obvious advantages in critically ill children.

In healthy, spontaneously breathing children, IAP is often around 0 mmHg. In mechanically ventilated and critically ill children, IAP is approximately 7 ± 3 mmHg and 4–10 mmHg, regardless of the child’s body weight [8,21,34]. It should be noted that the criteria for IAH and ACS in children and adults are different. In children, IAH is defined as IAP above 10 mmHg, while ACS is defined as IAP greater than 10 mmHg associated with new or worsening organ dysfunction/failure. In adults, IAH is defined as IAP above 12 mmHg, while ACS is defined as IAP greater than 20 mmHg with evidence of new or worsening organ dysfunction/failure [1,30] (Table 1).

Table 1

Comparison of definition IAH/ACS in pediatric patients and adults

Children Adults
Normal IAP 4–10 mmHg in critically ill children Approximately 5–7 mmHg in critically ill adults
IAH A sustained or repeated pathological elevation in IAP ≥10 mmHg A sustained or repeated pathological elevation in IAP ≥12 mmHg
IAH grade I IAP 10–12 mmHg IAP 12–15 mmHg
IAH grade II IAP 13–15 mmHg IAP 16–20 mmHg
IAH grade III IAP 16–19 mmHg IAP 21–25 mmHg
IAH grade IV IAP ≥20 mmHg IAP >25 mmHg
ACS A sustained IAP >10 mmHg associated with new organ dysfunction/failure A sustained IAP >20 mmHg that is associated with new organ dysfunction/failure

IAP = intra-abdominal pressure; IAH = intra-abdominal hypertension; ACS = abdominal compartment syndrome.

Note: Data from Kirkpatrick et al. [1], Cheatham et al. [30], and Ejike et al. [34].

That means that a small increase in IAP may be sufficient to compromise abdominal perfusion and cause the ACS in children for a short time [1,17,30,35]. The reason is that mean arterial pressure (MAP) is naturally lower in pediatric patients [36]. Therefore, it is recommended that pressure measurements should be performed every 6 h in patients with IAH and with potential for development of ACS [1,2,3,4,9,30,31].

In addition to the bladder measurement of IAP, intragastric pressure can be measured. The measurement of intragastric pressure is carried out by placing a nasogastric tube and an air capsule, which enables continuous measurement of IAP. It shows a high correlation with bladder measurement of IAP, thereby improving the identification of critically ill children with suspected ACS [37].

4.3 Parameters of tissue perfusion

Other parameters, which can be used for assessment of tissue perfusion in IAH/ACS, are APP, NIRS, hemodynamic parameters, and biomarkers.

APP has previously been suggested as a more accurate predictor of visceral perfusion and a better endpoint for resuscitation than IAP or MAP alone [2]. This value is calculated using the formula APP = MAP − IAP. According to the Abdominal Compartment Society, in adults and children older than 5 years, the resuscitation goal for APP should be a cut-off value of 50–60 mmHg [1]. However, APP values in children younger than 5 years are significantly lower, especially in infants, where the critical cut-off is as low as 35 mmHg. Lower APP values may be explained by a physiologically lower MAP in these age groups [5,20,38]. Until now, there have been no recommendations for APP in pediatric patients. Therefore, there is a need for studies aiming to identify critical cut-off APP values for all age groups.

NIRS is a noninvasive technique for the measurement of regional tissue oxygenation and assessment of microcirculation. This technique is used in monitoring abdominal, renal, or cerebral perfusion [39,40,41,42]. Thereby, this technique has shown usefulness in distinguishing healthy from ischemic intestines and detecting decreased renal and cerebral perfusion during and after the primary or gradual abdominal closure in neonates with gastroschisis [43,44]. Gradual abdominal wall closure of gastroschisis is not recommended in neonates with a specific cut-off NIRS level below 42% and cerebral splanchnic oxygenation ratio below 0.76 due to the risk of intestinal ischemia [45]. Although this technique may provide evidence about cerebral and renal regional oxygen saturation, determination of the mesenteric regional tissue oxygenation is considered an appropriate parameter in predicting IAH and poor clinical outcome of critically ill children [46]. So, a critical cut-off value for mesenteric tissue oxygenation below 50% was predictive for detecting IAH in children. Although this parameter was monitored noninvasive and continuously, determination of its cut-off value was performed only at 6-h intervals [46]. In addition, in the study of Junge et al. [5], no association was found between changes in NIRS and the presence of IAH or ACS due to the different weight and ages of the patients. Due to inconsistent data, further studies to determine critical cut-off values for NIRS for each age group during a 24 h interval are needed.

In addition to NIRS, by determining the values of mixed venous oxygen saturation, vasoactive inotropic score, and degree of distension of the left internal jugular vein, more precise data on the degree of negative hemodynamic changes in pediatric patients with IAH are obtained [17,46]. Biomarkers, such as level of lactate, intestinal fatty acid-binding protein in plasma, vascular endothelial growth factor (VEGF), π-glutathione S-transferase, and monocyte chemoattractant protein in urine, VEGF, and creatinine in serum, may be helpful in noninvasive assessment of organ disfunction in children with ACS [27,47]. Of all the above, only lactate levels represent an independent predictor of IAH presence [12,27]. Until now, hemodynamic parameters and biomarkers except lactate have not shown reliable clinical evidence in predicting IAH/ACS and therefore may be an area of additional research in the future.

Clinical and imaging findings with measurement of IAP, APP, NIRS, hemodynamic parameters, and biomarkers may be helpful in determining the degree of organ damage in patients with IAH/ACS. Considering that lower values of IAP in children for a short time can lead to ACS in comparison with adults, continuous evaluation of these parameters may be crucial for early diagnosis and prompt implementation of therapeutic procedures.

5 Therapeutic strategies concerning the management of IAH/ACS

The strategy for optimal treatment involves a set of appropriate interventions aimed at reducing IAP prior to its progression to compartment syndrome and the need for invasive treatment such as DL in these patients [1,11,30]. Timely medical suspicion is essential to initiate therapeutic measures to avoid organ dysfunction and death. Prior to the start of treatment, the search for the etiology represents a cornerstone because it determines the most appropriate therapeutic strategy [11]. There are well-described non-surgical and surgical strategies for effectively reducing IAP in pediatric patients with IAH/ACS. Summary of risk factors, diagnostic modalities, and treatment strategies are given in Table 2.

Table 2

A summary of risk factors, diagnostic modalities, and treatment strategies

Risk factors Diagnostic modalities Treatment strategies in IAH/ACS
Diminished abdominal wall compliance Clinical and imaging finding Improving abdominal wall compliance
IAP monitoring Deep sedation, analgesics, NMBs, reverse Trendelenburg position
Parameters of tissue perfusion Surgical decompression
Increased intraluminal contents Clinical and imaging finding Evacuation of intra-luminal content
IAP monitoring Gastric decompression with NGT, prokinetics, enemas, rectal tube, stopping or minimizing EN
Parameters of tissue perfusion Surgical decompression
Increased abdominal contents Clinical and imaging finding Evacuation of intra-abdominal content
IAP monitoring Surgical decompression
Parameters of tissue perfusion
Capillary leak/fluid resuscitation Clinical and imaging finding Optimizing fluid administration, and systemic perfusion
IAP monitoring Goal-directed fluid resuscitation (negative fluid balance in hypervolemia), hemodialysis, vasoactive drugs
Parameters of tissue perfusion Surgical decompression

IAH = intra-abdominal hypertension; ACS = abdominal compartment syndrome; IAP = intra-abdominal pressure; NMB = neuromuscular blocker; NGT = nasogastric tube; EN = enteral nutrition.

Note: Data from Kirkpatrick et al. [1], Liang et al. [15], and Gottlieb et al. [18].

5.1 Non-surgical strategy of IAH/ACS

Non-surgical strategy involves numerous medical and minimally invasive therapies that are indicated in pediatric patients with mild to moderate IAH [1]. This strategy should always be applied as early as possible, reducing the need for surgical interventions [31]. Non-surgical strategies include evacuation of intra-luminal content, improving abdominal wall compliance, evacuation of intra-abdominal space-occupying material, optimizing fluid administration, and systemic perfusion.

Evacuation of intra-luminal contents involves the use of a nasogastric tube, prokinetics, enemas, and rectal tube, as well as stopping or minimizing enteral feeding in these patients [1]. Improving abdominal wall compliance may decrease excessive abdominal muscle contraction, ensure comfort, and protect the intestinal function of patients with mild-to-moderate IAH [1,18]. This may be achieved by using sedatives, analgesics, neuromuscular blockers, and body positioning of patients in the reverse Trendelenburg position. Both measures may be effective only for the short term in the reduction of IAP [1,5,11]. The effectiveness of such measures also depends on etiology since patients with extraluminal collections will not respond to the mentioned measures but will respond to percutaneous peritoneal drainage [15]. Optimizing fluid administration and systemic perfusion involves goal-directed fluid resuscitation, correcting positive fluid balance, and hemodialysis. In the study published by Kirkpatrick et al. [1], goal-directed fluid resuscitation implies avoiding large volumes of crystalloids and early use of hypertonic and colloid solutions after completing the acute resuscitation phase. This procedure and hemodialysis aim to achieve a net negative or zero fluid balance in patients with IAH to reduce the progression of secondary ACS [3]. In addition, the administration of vasoactive drugs and hemodynamic monitoring are often crucial in ensuring an adequate level of APP [1,31]. These suggestions of the author cannot be recommended yet. However, the current Abdominal Compartment Society guidelines do not recommend the use of APP in the resuscitation process [1]. The reason for that lies in the fact that elevated MAP, resulting from increased systemic vascular resistance and decreased cardiac output, can lead to hypoperfusion despite an acceptable APP. Therefore, optimizing fluid administration and systemic perfusion remains a challenge for clinicians.

Clinicians should not overestimate non-surgical treatment measures in their effectiveness. If the above measures fail, surgical decompression using emergent laparotomy should be considered.

5.2 Surgical strategy of IAH/ACS

Surgical management of ACS includes percutaneous catheter drainage (PCD), and DL, which may decrease IAP and improve organ function and outcome of these patients [15,18,48]. PCD is a popular method of extraluminal volume reduction caused by the accumulation of air, fluid, or blood in the abdominal cavity. Because of its less invasiveness, PCD may alleviate the need for more invasive methods or provide the time needed to stabilize patients before DL is implemented [49,50]. It is most used in neonates with necrotizing enterocolitis, in patients with massive ascites, burns, IAH grade III or IAH with some organic dysfunction, and when conservative measures are insufficient [15,36,50,51]. After PCD, the level of IAP, degree of abdominal distension, and organic dysfunction are significantly reduced with a simultaneous increase of MAP, APP, glomerular filtration rate, urine output of >2 mL/kg/h, and PaO2/FiO2 ratio [36,49,50]. In most cases, IAP usually normalizes within 24 h, and the abdominal catheter can be removed. Potential complications of this method include abdominal infection and electrolyte imbalances in these patients [15]. With this management, the mortality rate is approximately 25%, and organic improvement was observed [1,15].

As a last alternative, surgical decompression should be considered. DL is an invasive and effective surgical measure to treat the most severe form of ACS in children. Implementation of this method results in an immediate decrease in IAP and improvements in organ function [4,8,25,36,48,52,53,54,55]. In the studies of Rezeni and Thabet [31] and Laconi et al. [56], the main criteria for DL were a rapid increase in abdominal diameter of 1 cm within 24 h, increased ventilatory support after 8–12 h from the rise in IAP, reduced diuresis below 1 ml/kg/h, and worsening NIRS after 6–8 h from the increase in IAP. In the studies of Pearson et al. [48] and Van Damme and De Waele [54], the main criteria for surgical decompression were the deterioration of ventilatory parameters and the need for mechanical ventilation with higher ventilation pressures, persistent oliguria, and serum lactate greater than 3 mg/dL. The secondary criteria for surgical decompression were hypertension, coagulation disorders, collateral circulation, and the need for vasopressor support. Combining two main criteria or one main and three secondary criteria has been used to indicate surgical decompression [44,57]. DL may be the most effective when performed within 8 h of the onset of ACS [58]. Thus, early decision-making for DL should be encouraged, as it can save children’s lives [59]. The degree of reduction of IAP with this method varies depending on the study. In the study by Divarci et al. [4], IAP was reduced from 20 to 9 mmHg. In another study by di Natale et al. [52], IAP was reduced from 22.5 to 9 mmHg, with a simultaneous improvement in APP from 23 to 44.5 mmHg. Significant reduction of IAP and improvement of organ perfusion are expected within 6–12 h after DL [4,8,25,33,35,48,52,53,54,55]. DL is associated with overall patient mortality of over 50%, especially with children under 1 year of age, weight under the third percentile, an open abdomen treatment, an intestinal resection, and an elevated serum lactate >1.8 mmol/L. Late implementation of this procedure exhibits a higher mortality rate and its limiting effect [52,60,61]. Until now, different criteria and timing have been used for the implementation of DL in pediatric patients with ACS, which has resulted in various reductions of IAP. New studies in the future should more precisely define the criteria and time of DL application, which will help to improve the efficiency of this method and reduce the mortality of children with ACS.

This technique can be handled with full closure or associated with a temporary abdominal closure (TAC). TAC is a reliable and safe method in treating severely injured and acute care surgery patients. The different techniques account for different results according to the different indications. In peritonitis, commercial negative pressure temporary closure seems to be the most effective in reducing mortality. In trauma, skin closure and Bogotà bag seem to provide better results than negative pressure ones. This can be partially explained by the relative absence of infection and cytokines to be cleared [62,63]. Despite the weakness of the literature and the lack of consensus regarding the use of commercial negative pressure temporary closure, it may be used in neonates with necrotizing enterocolitis, patients with peritonitis, and burn patients [64,65]. The degree of negative pressure has to be continuous, with a pressure of −50 to −75 mmHg for children younger than 2 years and −75 to −125 mmHg for children over 2 years of age [66]. The only potential complication associated with its use is the development of enterocutaneous fistulas [67]. The possible causal relationship between negative pressure temporary closure and the development of enteric fistula is still unclear. One of the reasons is that using the same vacuum-assisted closure device for both adults and children is not acceptable, despite the need to adjust the parameters to meet the needs of this population. Therefore, attention should be focused on protecting the delicate tissues and achieving the appropriate level of negative pressure in accordance with the patient’s age. Regardless of complications, this technique has significantly reduced the previously observed morbidity associated with open abdomens and improved patient survival to 80% [67,68]. Further research will be able to define the indications and benefits of this method, determining where this method can be applied in pediatrics [69]. A summary of various criteria for DL is given in Table 3.

Table 3

A summary of various criteria for decompressive laparotomy

No Study Year Criteria for decompressive laparotomy
1 Pearson et al. [48] 2010 IAH (range, 12–44 mmHg)
Maximum ventilatory support
Required vasopressors/inotropes
Oliguria and hemodialysis
2 Divarci et al. [4] 2016 IAH
Increased RR
Low APP
Oliguria
3 Van Damme and De Waele [54] 2018 IAH (mean IAP 20.7 mmHg)
Increased PIP and lower P/F ratio
Lower MAP and increased CVP
Oliguria
4 Laconi et al. [56] 2022 IAH
Abdominal diameter increased >1 cm in 24 h
Increase of ventilatory support in 8–12 h
NIRS parameters worsening in 6–8 h
Oliguria
5 Rezeni and Thabet [31] 2022 IAH
Abdominal distension
Increased ventilator setting and oxygen requirement
Increased vasopressor or inotrope dose
Oliguria
Worsening acidosis

IAH = intra-abdominal hypertension; RR = respiratory rate; APP = abdominal perfusion pressure; PIP = peak inspiratory pressure; P/F ratio = ratio of partial pressure of arterial oxygen and fraction of inspired oxygen; MAP = mean arterial pressure; CVP = central vein pressure; NIRS = near-infrared spectroscopy.

Therefore, the early application of non-surgical therapeutic procedures can reduce IAP, decrease the need for surgical therapeutic procedures, and improve the patient’s survival. The final decision on when to convert from non-surgical to surgical therapeutic procedures will be made by pediatric intensivists and surgeons in their interdisciplinary communication based on an assessment of clinical and imaging findings, levels of IAP, APP, NIRS, hemodynamic parameters, and biomarkers in pediatric patients. Early involvement of surgeons and emergency DL is often imperative for these patients.

6 Conclusion

ACS rarely occurs in pediatric patients but is associated with high mortality. Clinicians should screen pediatric patients in the intensive care unit with the risk factors, clinical and imaging indicators for the development of ACS. ACS in children must be recognized early because its development needs a lower level of IAP. Timely and continuous evaluation of IAP, APP, NIRS, hemodynamic parameters, and biomarkers will speed up the accurate diagnosis of ACS and the clinician’s decision about the treatment options. Implementation of non-surgical therapeutic procedures will improve organ function and decrease the need for surgical interventions. Current therapies, such as abdominal decompression, appear to positively impact patient survival. However, prospective randomized studies are needed to define advanced non-invasive monitoring technologies and predictors of increased IAP before clinicians decide to replace non-surgical with surgical therapeutic procedures. That will help clinicians in the early implementation of personalized surgical therapeutic options and improve survival in children.

Abbreviations

IAH

Intra-abdominal hypertension

ACS

Abdominal compartment syndrome

IAP

Intra-abdominal pressure

APP

Abdominal perfusion pressure

NICU

Neonatal intensive care units

PICU

Pediatric intensive care units

NIRS

Near-infrared spectroscopy

MODS

Multiorgan distress syndrome

VEGF

Vascular endothelial growth factor

MV

Mechanical ventilation

BP

Blood pressure

SpO2

Tissue oxygen saturation

MRI

Magnetic resonance imaging

CT

Computerized tomography

NMBs

Neuromuscular blockers

NGT

Nasogastric tube

EN

Enteral nutrition

PCD

Percutaneous catheter drainage

DL

Decompressive laparotomy

TAC

Temporary abdominal closure

  1. Funding information: This work has been supported by an internal grant initiated in 2020 (No. 42/2020) at the Medical Faculty, University of Nis, Serbia.

  2. Author contributions: Conception and design of manuscript, interpretation of the relevant literature, and drafting of manuscript: V.M.; conception and design of manuscript, interpretation of the relevant literature, and drafting of manuscript: I.B. and M.Z.; interpretation of the relevant literature and drafting of manuscript: M.S.; literature review, critical revision, and proofreading of the version for publication: D.S. All authors read and approved the final manuscript.

  3. Conflict of interest: The authors state no conflict of interest.

  4. Data availability statement: All data generated or analysed during this study are included in this published article.

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Received: 2024-08-20
Revised: 2025-06-23
Accepted: 2025-06-24
Published Online: 2025-07-17

© 2025 the author(s), published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  108. Electroacupuncture-induced reduction of myocardial ischemia–reperfusion injury via FTO-dependent m6A methylation modulation
  109. Hemorrhoids and cardiovascular disease: A bidirectional Mendelian randomization study
  110. Cell-free adipose extract inhibits hypertrophic scar formation through collagen remodeling and antiangiogenesis
  111. HALP score in Demodex blepharitis: A case–control study
  112. Assessment of SOX2 performance as a marker for circulating cancer stem-like cells (CCSCs) identification in advanced breast cancer patients using CytoTrack system
  113. Risk and prognosis for brain metastasis in primary metastatic cervical cancer patients: A population-based study
  114. Comparison of the two intestinal anastomosis methods in pediatric patients
  115. Factors influencing hematological toxicity and adverse effects of perioperative hyperthermic intraperitoneal vs intraperitoneal chemotherapy in gastrointestinal cancer
  116. Endotoxin tolerance inhibits NLRP3 inflammasome activation in macrophages of septic mice by restoring autophagic flux through TRIM26
  117. Lateral transperitoneal laparoscopic adrenalectomy: A single-centre experience of 21 procedures
  118. Petunidin attenuates lipopolysaccharide-induced retinal microglia inflammatory response in diabetic retinopathy by targeting OGT/NF-κB/LCN2 axis
  119. Procalcitonin and C-reactive protein as biomarkers for diagnosing and assessing the severity of acute cholecystitis
  120. Factors determining the number of sessions in successful extracorporeal shock wave lithotripsy patients
  121. Development of a nomogram for predicting cancer-specific survival in patients with renal pelvic cancer following surgery
  122. Inhibition of ATG7 promotes orthodontic tooth movement by regulating the RANKL/OPG ratio under compression force
  123. A machine learning-based prognostic model integrating mRNA stemness index, hypoxia, and glycolysis‑related biomarkers for colorectal cancer
  124. Glutathione attenuates sepsis-associated encephalopathy via dual modulation of NF-κB and PKA/CREB pathways
  125. FAHD1 prevents neuronal ferroptosis by modulating R-loop and the cGAS–STING pathway
  126. Association of placenta weight and morphology with term low birth weight: A case–control study
  127. Investigation of the pathogenic variants induced Sjogren’s syndrome in Turkish population
  128. Nucleotide metabolic abnormalities in post-COVID-19 condition and type 2 diabetes mellitus patients and their association with endocrine dysfunction
  129. TGF-β–Smad2/3 signaling in high-altitude pulmonary hypertension in rats: Role and mechanisms via macrophage M2 polarization
  130. Ultrasound-guided unilateral versus bilateral erector spinae plane block for postoperative analgesia of patients undergoing laparoscopic cholecystectomy
  131. Profiling gut microbiome dynamics in subacute thyroiditis: Implications for pathogenesis, diagnosis, and treatment
  132. Delta neutrophil index, CRP/albumin ratio, procalcitonin, immature granulocytes, and HALP score in acute appendicitis: Best performing biomarker?
  133. Anticancer activity mechanism of novelly synthesized and characterized benzofuran ring-linked 3-nitrophenyl chalcone derivative on colon cancer cells
  134. H2valdien3 arrests the cell cycle and induces apoptosis of gastric cancer
  135. Prognostic relevance of PRSS2 and its immune correlates in papillary thyroid carcinoma
  136. Association of SGLT2 inhibition with psychiatric disorders: A Mendelian randomization study
  137. Motivational interviewing for alcohol use reduction in Thai patients
  138. Luteolin alleviates oxygen-glucose deprivation/reoxygenation-induced neuron injury by regulating NLRP3/IL-1β signaling
  139. Polyphyllin II inhibits thyroid cancer cell growth by simultaneously inhibiting glycolysis and oxidative phosphorylation
  140. Relationship between the expression of copper death promoting factor SLC31A1 in papillary thyroid carcinoma and clinicopathological indicators and prognosis
  141. CSF2 polarized neutrophils and invaded renal cancer cells in vitro influence
  142. Proton pump inhibitors-induced thrombocytopenia: A systematic literature analysis of case reports
  143. The current status and influence factors of research ability among community nurses: A sequential qualitative–quantitative study
  144. OKAIN: A comprehensive oncology knowledge base for the interpretation of clinically actionable alterations
  145. The relationship between serum CA50, CA242, and SAA levels and clinical pathological characteristics and prognosis in patients with pancreatic cancer
  146. Identification and external validation of a prognostic signature based on hypoxia–glycolysis-related genes for kidney renal clear cell carcinoma
  147. Engineered RBC-derived nanovesicles functionalized with tumor-targeting ligands: A comparative study on breast cancer targeting efficiency and biocompatibility
  148. Relationship of resting echocardiography combined with serum micronutrients to the severity of low-gradient severe aortic stenosis
  149. Effect of vibration on pain during subcutaneous heparin injection: A randomized, single-blind, placebo-controlled trial
  150. The diagnostic performance of machine learning-based FFRCT for coronary artery disease: A meta-analysis
  151. Comparing biofeedback device vs diaphragmatic breathing for bloating relief: A randomized controlled trial
  152. Serum uric acid to albumin ratio and C-reactive protein as predictive biomarkers for chronic total occlusion and coronary collateral circulation quality
  153. Multiple organ scoring systems for predicting in-hospital mortality of sepsis patients in the intensive care unit
  154. Single-cell RNA sequencing data analysis of the inner ear in gentamicin-treated mice via intraperitoneal injection
  155. Review Articles
  156. The effects of enhanced external counter-pulsation on post-acute sequelae of COVID-19: A narrative review
  157. Diabetes-related cognitive impairment: Mechanisms, symptoms, and treatments
  158. Microscopic changes and gross morphology of placenta in women affected by gestational diabetes mellitus in dietary treatment: A systematic review
  159. Review of mechanisms and frontier applications in IL-17A-induced hypertension
  160. Research progress on the correlation between islet amyloid peptides and type 2 diabetes mellitus
  161. The safety and efficacy of BCG combined with mitomycin C compared with BCG monotherapy in patients with non-muscle-invasive bladder cancer: A systematic review and meta-analysis
  162. The application of augmented reality in robotic general surgery: A mini-review
  163. The effect of Greek mountain tea extract and wheat germ extract on peripheral blood flow and eicosanoid metabolism in mammals
  164. Neurogasobiology of migraine: Carbon monoxide, hydrogen sulfide, and nitric oxide as emerging pathophysiological trinacrium relevant to nociception regulation
  165. Plant polyphenols, terpenes, and terpenoids in oral health
  166. Laboratory medicine between technological innovation, rights safeguarding, and patient safety: A bioethical perspective
  167. End-of-life in cancer patients: Medicolegal implications and ethical challenges in Europe
  168. The maternal factors during pregnancy for intrauterine growth retardation: An umbrella review
  169. Intra-abdominal hypertension/abdominal compartment syndrome of pediatric patients in critical care settings
  170. PI3K/Akt pathway and neuroinflammation in sepsis-associated encephalopathy
  171. Screening of Group B Streptococcus in pregnancy: A systematic review for the laboratory detection
  172. Giant borderline ovarian tumours – review of the literature
  173. Leveraging artificial intelligence for collaborative care planning: Innovations and impacts in shared decision-making – A systematic review
  174. Cholera epidemiology analysis through the experience of the 1973 Naples epidemic
  175. Risk factors of frailty/sarcopenia in community older adults: Meta-analysis
  176. Supplement strategies for infertility in overweight women: Evidence and legal insights
  177. Scurvy, a not obsolete disorder: Clinical report in eight young children and literature review
  178. A meta-analysis of the effects of DBS on cognitive function in patients with advanced PD
  179. Protective role of selenium in sepsis: Mechanisms and potential therapeutic strategies
  180. Strategies for hyperkalemia management in dialysis patients: A systematic review
  181. C-reactive protein-to-albumin ratio in peripheral artery disease
  182. Case Reports
  183. Delayed graft function after renal transplantation
  184. Semaglutide treatment for type 2 diabetes in a patient with chronic myeloid leukemia: A case report and review of the literature
  185. Diverse electrophysiological demyelinating features in a late-onset glycogen storage disease type IIIa case
  186. Giant right atrial hemangioma presenting with ascites: A case report
  187. Laser excision of a large granular cell tumor of the vocal cord with subglottic extension: A case report
  188. EsoFLIP-assisted dilation for dysphagia in systemic sclerosis: Highlighting the role of multimodal esophageal evaluation
  189. Molecular hydrogen-rhodiola as an adjuvant therapy for ischemic stroke in internal carotid artery occlusion: A case report
  190. Coronary artery anomalies: A case of the “malignant” left coronary artery and its surgical management
  191. Rapid Communication
  192. Biological properties of valve materials using RGD and EC
  193. A single oral administration of flavanols enhances short-term memory in mice along with increased brain-derived neurotrophic factor
  194. Letter to the Editor
  195. Role of enhanced external counterpulsation in long COVID
  196. Expression of Concern
  197. Expression of concern “A ceRNA network mediated by LINC00475 in papillary thyroid carcinoma”
  198. Expression of concern “Notoginsenoside R1 alleviates spinal cord injury through the miR-301a/KLF7 axis to activate Wnt/β-catenin pathway”
  199. Expression of concern “circ_0020123 promotes cell proliferation and migration in lung adenocarcinoma via PDZD8”
  200. Corrigendum
  201. Corrigendum to “Empagliflozin improves aortic injury in obese mice by regulating fatty acid metabolism”
  202. Corrigendum to “Comparing the therapeutic efficacy of endoscopic minimally invasive surgery and traditional surgery for early-stage breast cancer: A meta-analysis”
  203. Corrigendum to “The progress of autoimmune hepatitis research and future challenges”
  204. Retraction
  205. Retraction of “miR-654-5p promotes gastric cancer progression via the GPRIN1/NF-κB pathway”
  206. Retraction of: “LncRNA CASC15 inhibition relieves renal fibrosis in diabetic nephropathy through downregulating SP-A by sponging to miR-424”
  207. Retraction of: “SCARA5 inhibits oral squamous cell carcinoma via inactivating the STAT3 and PI3K/AKT signaling pathways”
  208. Special Issue Advancements in oncology: bridging clinical and experimental research - Part II
  209. Unveiling novel biomarkers for platinum chemoresistance in ovarian cancer
  210. Lathyrol affects the expression of AR and PSA and inhibits the malignant behavior of RCC cells
  211. The era of increasing cancer survivorship: Trends in fertility preservation, medico-legal implications, and ethical challenges
  212. Bone scintigraphy and positron emission tomography in the early diagnosis of MRONJ
  213. Meta-analysis of clinical efficacy and safety of immunotherapy combined with chemotherapy in non-small cell lung cancer
  214. Special Issue Computational Intelligence Methodologies Meets Recurrent Cancers - Part IV
  215. Exploration of mRNA-modifying METTL3 oncogene as momentous prognostic biomarker responsible for colorectal cancer development
  216. Special Issue The evolving saga of RNAs from bench to bedside - Part III
  217. Interaction and verification of ferroptosis-related RNAs Rela and Stat3 in promoting sepsis-associated acute kidney injury
  218. The mRNA MOXD1: Link to oxidative stress and prognostic significance in gastric cancer
  219. Special Issue Exploring the biological mechanism of human diseases based on MultiOmics Technology - Part II
  220. Dynamic changes in lactate-related genes in microglia and their role in immune cell interactions after ischemic stroke
  221. A prognostic model correlated with fatty acid metabolism in Ewing’s sarcoma based on bioinformatics analysis
  222. Red cell distribution width predicts early kidney injury: A NHANES cross-sectional study
  223. Special Issue Diabetes mellitus: pathophysiology, complications & treatment
  224. Nutritional risk assessment and nutritional support in children with congenital diabetes during surgery
  225. Correlation of the differential expressions of RANK, RANKL, and OPG with obesity in the elderly population in Xinjiang
  226. A discussion on the application of fluorescence micro-optical sectioning tomography in the research of cognitive dysfunction in diabetes
  227. A review of brain research on T2DM-related cognitive dysfunction
  228. Metformin and estrogen modulation in LABC with T2DM: A 36-month randomized trial
  229. Special Issue Innovative Biomarker Discovery and Precision Medicine in Cancer Diagnostics
  230. CircASH1L-mediated tumor progression in triple-negative breast cancer: PI3K/AKT pathway mechanisms
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