Evaluating the correlation between amniotic fluid volume and estimated fetal weight in healthy pregnant women
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Sara C.S. Souza
Abstract
Objectives
The establishment of cut-offs for normal amniotic fluid volume (AFV) is valuable to predict perinatal outcomes. However, the most common methods to measure AFV are not accurate enough. It is important to understand factors that may be able to increase the accuracy of the calculation of AFV cut-off values. The objective of this study was to verify the correlation between AFV and estimated fetal weight (EFW).
Methods
Records from almost 7,000 patients between 2012 and 2017 were accessed through hospital databases. The AFV measurements included in our analysis were obtained using the maximum vertical pocket technique.
Results
AFV was positively correlated with EFW in the overall, male and female samples; however, the magnitude of the association was small (0.1<r<0.3). A moderate (0.3≤r<0.5) association between AFV and EFW was found specifically during mid- to late-gestation.
Conclusions
The incorporation of EFW together with other factors (e.g., gestational age, fetus sex) may increase the accuracy of the AFV cut-offs calculation and, ultimately, reduce morbidity.
Funding source: Canadian Institutes of Health Research http://dx.doi.org/10.13039/501100000024
Award Identifier / Grant number: #MFM-146444
Acknowledgments
We would like to thank Dr. Andrea Lanes, Dr. Daniel Corsi, and Natalie Rybak who provided insight and expertise that greatly assisted with the research and overall improvement in the manuscript.
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Research funding: This study was supported by the Canadian Institutes of Health Research (CIHR) agency (Grant #MFM-146444).
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Author contributions: KK, AH, RF, and LMG made substantial contributions to the conception and design of the work; AH, RF, and YL led the data acquisition and analysis; and SCSS was responsible for the interpretation of data for the work. SCSS drafted the work and KK, AH, RF, YL, and LMG revised it critically. All authors approved the final version to be published.
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Competing interests: Authors state no conflict of interest.
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Informed consent: Not applicable.
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Ethical approval: This study was approved by TOH Research Ethics Board (file number: 20170723-01H).
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- WAPM Guideline
- Ultrasound in labor: clinical practice guideline and recommendation by the WAPM-World Association of Perinatal Medicine and the PMF-Perinatal Medicine Foundation
- Original Articles – Obstetrics
- Racial and ethnic distribution of US randomized controlled trials in obstetrics: a retrospective review
- Impact of earlier gestational diabetes screening for pregnant people with obesity on maternal and perinatal outcomes
- Variations in uterine closure technique: an institutional survey of obstetricians and implications for patient counseling and prevention of adverse sequelae
- Termination of pregnancy in the second trimester – the course of different therapy regimens
- Hyponatremia among preeclampsia patients – a potential sign of severity
- Effect of combined paracetamol and dexamethasone vs. paracetamol on postoperative nausea vomiting after cesarean section
- Lidocaine vs. tramadol vs. placebo wound infiltration for post-cesarean section pain relief: a randomized controlled trial
- Does the use of chitosan covered gauze for postpartum hemorrhage reduce the need for surgical therapy including hysterectomy? A databased historical cohort study
- The effect of advanced maternal age on perinatal outcomes in nulliparous pregnancies
- Evaluating the correlation between amniotic fluid volume and estimated fetal weight in healthy pregnant women
- Metabolic characterization of amniotic fluid of fetuses with isolated choroid plexus cyst
- Does a cervical pessary reduce the rate of preterm birth in women with a short cervix?
- Research progress on N6-methyladenosine in the human placenta
- Why are women deciding against birth in alongside midwifery units? A prospective single-center study from Germany
- Pregnancy hypothyroidism incidence and complications using the 2011 and 2017 ATA cutoff values. Experience at a maternity hospital in a densely populated area in Mexico City
- Expression pattern and clinical significance of microRNA-let-7a and IFN-gamma in placental tissue of patients with preeclampsia with severe features
- Original Articles – Fetus
- Management of neonates with 35 weeks of gestational age or more with infectious risk factors at birth: opportunities for improvement
Articles in the same Issue
- Frontmatter
- WAPM Guideline
- Ultrasound in labor: clinical practice guideline and recommendation by the WAPM-World Association of Perinatal Medicine and the PMF-Perinatal Medicine Foundation
- Original Articles – Obstetrics
- Racial and ethnic distribution of US randomized controlled trials in obstetrics: a retrospective review
- Impact of earlier gestational diabetes screening for pregnant people with obesity on maternal and perinatal outcomes
- Variations in uterine closure technique: an institutional survey of obstetricians and implications for patient counseling and prevention of adverse sequelae
- Termination of pregnancy in the second trimester – the course of different therapy regimens
- Hyponatremia among preeclampsia patients – a potential sign of severity
- Effect of combined paracetamol and dexamethasone vs. paracetamol on postoperative nausea vomiting after cesarean section
- Lidocaine vs. tramadol vs. placebo wound infiltration for post-cesarean section pain relief: a randomized controlled trial
- Does the use of chitosan covered gauze for postpartum hemorrhage reduce the need for surgical therapy including hysterectomy? A databased historical cohort study
- The effect of advanced maternal age on perinatal outcomes in nulliparous pregnancies
- Evaluating the correlation between amniotic fluid volume and estimated fetal weight in healthy pregnant women
- Metabolic characterization of amniotic fluid of fetuses with isolated choroid plexus cyst
- Does a cervical pessary reduce the rate of preterm birth in women with a short cervix?
- Research progress on N6-methyladenosine in the human placenta
- Why are women deciding against birth in alongside midwifery units? A prospective single-center study from Germany
- Pregnancy hypothyroidism incidence and complications using the 2011 and 2017 ATA cutoff values. Experience at a maternity hospital in a densely populated area in Mexico City
- Expression pattern and clinical significance of microRNA-let-7a and IFN-gamma in placental tissue of patients with preeclampsia with severe features
- Original Articles – Fetus
- Management of neonates with 35 weeks of gestational age or more with infectious risk factors at birth: opportunities for improvement
