Abstract
Objectives
To evaluate the association between extremely elevated alkaline phosphatase (ALKP) levels (above 1000 U/L) and adverse perinatal outcome.
Methods
A retrospective case series of all parturients with extremely elevated ALKP levels taken throughout pregnancy at a single university-affiliated medical center (2010–2018). Demographics and medical data were retrieved. Following literature review, previously reported similar cases were added to the cohort. We report perinatal outcome of our cohort as well as literature review.
Results
During study period 11 parturients with high ALKP were identified. Ten more cases were retrieved from PubMed search. Overall, median ALKP levels were 1880 (range 1052–4488 U/L). Reasons for evaluation were mostly nonspecific symptoms (pruritus, headache, abdominal pain) or routine obstetrical evaluation. In 10/12 (83%) cases, elevated ALKP levels were of placental origin; the rest had osteal origin. Median gestational age at delivery was 38 (range 35–41); four (19%) women had preterm delivery. Six patients (29%) had gestational diabetes mellitus and six (29%) had hypertensive disorders. Histopathology of the placenta was available in eight cases: three normal histology (38%) and five with different non-specific pathologies.
Conclusions
We report the largest case series of extremely elevated levels of ALKP in pregnancy thus far. Our data suggest association with adverse perinatal outcome.
Research funding: None declared.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: Authors state no conflict of interest.
Ethical approval: The research related to human use has been complied with all the relevant national regulations, institutional policies and in accordance the tenets of the Helsinki Declaration, and has been approved by the authors’ Institutional Review Board or equivalent committee (HYMC 0013-19).
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Review
- Methods of detection and prevention of preterm labour and the PAMG-1 detection test: a review
- Corner of Academy
- Long term alterations of growth after antenatal steroids in preterm twin pregnancies
- Original Articles – Obstetrics
- SARS-CoV-2 in pregnancy: maternal and perinatal outcome data of 34 pregnant women hospitalised between May and October 2020
- Comparison of hematological parameters and perinatal outcomes between COVID-19 pregnancies and healthy pregnancy cohort
- The effect of mask use on maternal oxygen saturation in term pregnancies during the COVID-19 process
- Risk factors for pregnancy-associated venous thromboembolism in Singapore
- Does the length of second stage of labour or second stage caesarean section in nulliparous women increase the risk of preterm birth in subsequent pregnancies?
- Reference range for C1-esterase inhibitor (C1 INH) in the third trimester of pregnancy
- Termination of pregnancy following a Down Syndrome diagnosis: decision-making process and influential factors in a Muslim but secular country, Turkey
- High dose vs. low dose oxytocin for labor augmentation: a systematic review and meta-analysis of randomized controlled trials
- Extremely high levels of alkaline phosphatase and pregnancy outcome: case series and review of the literature
- Cervical elastography strain ratio and strain pattern for the prediction of a successful induction of labour
- Original Articles – Fetus
- CD34 immunostain increases sensitivity of the diagnosis of fetal vascular malperfusion in placentas from ex-utero intrapartum treatment
- The ability of various cerebroplacental ratio thresholds to predict adverse neonatal outcomes in term fetuses exhibiting late-onset fetal growth restriction
- Obstetric and pediatric growth charts for the detection of late-onset fetal growth restriction and neonatal adverse outcomes
- Original Articles – Neonates
- Bacterial stability with freezer storage of human milk
- Protein and genetic expression of CDKN1C and IGF2 and clinical features related to human umbilical cord length
- Short Communication
- A considerable asymptomatic proportion and thromboembolism risk of pregnant women with COVID-19 infection in Wuhan, China
Articles in the same Issue
- Frontmatter
- Review
- Methods of detection and prevention of preterm labour and the PAMG-1 detection test: a review
- Corner of Academy
- Long term alterations of growth after antenatal steroids in preterm twin pregnancies
- Original Articles – Obstetrics
- SARS-CoV-2 in pregnancy: maternal and perinatal outcome data of 34 pregnant women hospitalised between May and October 2020
- Comparison of hematological parameters and perinatal outcomes between COVID-19 pregnancies and healthy pregnancy cohort
- The effect of mask use on maternal oxygen saturation in term pregnancies during the COVID-19 process
- Risk factors for pregnancy-associated venous thromboembolism in Singapore
- Does the length of second stage of labour or second stage caesarean section in nulliparous women increase the risk of preterm birth in subsequent pregnancies?
- Reference range for C1-esterase inhibitor (C1 INH) in the third trimester of pregnancy
- Termination of pregnancy following a Down Syndrome diagnosis: decision-making process and influential factors in a Muslim but secular country, Turkey
- High dose vs. low dose oxytocin for labor augmentation: a systematic review and meta-analysis of randomized controlled trials
- Extremely high levels of alkaline phosphatase and pregnancy outcome: case series and review of the literature
- Cervical elastography strain ratio and strain pattern for the prediction of a successful induction of labour
- Original Articles – Fetus
- CD34 immunostain increases sensitivity of the diagnosis of fetal vascular malperfusion in placentas from ex-utero intrapartum treatment
- The ability of various cerebroplacental ratio thresholds to predict adverse neonatal outcomes in term fetuses exhibiting late-onset fetal growth restriction
- Obstetric and pediatric growth charts for the detection of late-onset fetal growth restriction and neonatal adverse outcomes
- Original Articles – Neonates
- Bacterial stability with freezer storage of human milk
- Protein and genetic expression of CDKN1C and IGF2 and clinical features related to human umbilical cord length
- Short Communication
- A considerable asymptomatic proportion and thromboembolism risk of pregnant women with COVID-19 infection in Wuhan, China