Maternal Left Lateral Position in Fetal Growth Restriction
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Left lateral recumbent positioning.
- Who it may be relevant to
- Registry conditions: Fetal Growth Restriction. Basic parameters: 18 years — 65 years · Female.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- United States
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Impact of Maternal Left-Lateral Recumbent Positioning in Pregnancies With Fetal Growth Restriction
Overview
The goal of this clinical trial is to learn if maternal left-lateral positioning in pregnancy works to treat fetal growth restriction. This study will also help us learn about the effects of left-lateral positioning on maternal metabolomics, maternal mental health, fetal cardiac function, and delivery outcomes. The main questions it aims to answer are: * Does maternal left-lateral position in a pregnancy with fetal growth restriction improve the baby's growth? * How are maternal metabolomics, delivery outcomes, maternal mental health, and fetal cardiac function impacted by maternal left-lateral position? Researchers will compare the intervention group to pregnancies with fetal growth restriction that receive standard of care (without left-lateral positioning) to see if left-lateral position improves fetal biometry in fetal growth restriction. Participants will: * Practice left-lateral position every day for 4 hours (cumulatively) with 10-mins stretching after every hour of left-lateral position, or continue to receive standard of care * Visit the clinic once after 4 weeks for a follow-up research visit, and at the time of delivery Tracking of the physical activity and adherence to left-lateral position at home in intervention group A will be done through a fitbit (smart watch) given during enrollment. A fitbit will also be given to participants in intervention group B, receiving standard of care, to monitor their physical activity trends at home.
Interventions
- Behavioral Left lateral recumbent positioning
Left-lateral position is the recommended position of resting in pregnancy. The participants in the intervention group will be advised to practice this position with an intermittent 10-minute stretching after every hour of resting, with no more than 4-hours of this intervention per day.
Primary outcome measures
- Fetal biometry [Time frame: 4 weeks after enrollment]
Secondary outcome measures (5)
- Fetal cardiac function [Time frame: 4 weeks after enrollment]
- Feto-Maternal Doppler flow [Time frame: 4 weeks after enrollment]
- Delivery outcomes [Time frame: At delivery]
- Maternal Mental Health evaluation [Time frame: 4 weeks after enrollment, and after delivery]
- Maternal Metabolomics assessment [Time frame: 4 weeks after enrollment, and after delivery]
Eligibility criteria
Inclusion criteria
- Pregnant persons between 18 - 65 years of age, with a diagnosis of fetal growth restriction, with an estimated fetal weight less than tenth percentile
- Participants with a singleton pregnancy between 24- and 34-weeks' gestational age
- Participants with fluency in English or Spanish language
Exclusion criteria
- Patients with a known history of deep vein thrombosis, pulmonary embolism, or hypercoagulability disorder
- Patients with a pre-pregnancy BMI greater than 40
- Pregnancy with severe abnormality in umbilical artery Doppler flow, including absent end-diastolic flow (AEDF) and reverse end-diastolic flow (REDF)
- Patients receiving anticoagulation therapy
- Pregnancy with suspected chromosomal anomalies or a multifetal pregnancy
- Patients with an active smoking status during pregnancy
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Single blind
- Primary purpose
- Treatment
Study locations
United States · 2 centers
- UCHealth Prenatal Diagnosis and Genetics Clinic - Anschutz Medical Campus — Aurora
- CU John C. Hobbins Perinatal Center — Denver
Publications
- American College of Obstetricians and Gynecologists' Committee on Practice Bulletins-Obstetrics and the Society forMaternal-FetalMedicin. ACOG Practice Bulletin No. 204: Fetal Growth Restriction. Obstet Gynecol. 2019 Feb;133(2):e97-e109. doi: 10.1097/AOG.0000000000003070. PMID 30681542
- Gardosi J, Madurasinghe V, Williams M, Malik A, Francis A. Maternal and fetal risk factors for stillbirth: population based study. BMJ. 2013 Jan 24;346:f108. doi: 10.1136/bmj.f108. PMID 23349424
- Lees CC, Romero R, Stampalija T, Dall'Asta A, DeVore GA, Prefumo F, Frusca T, Visser GHA, Hobbins JC, Baschat AA, Bilardo CM, Galan HL, Campbell S, Maulik D, Figueras F, Lee W, Unterscheider J, Valensise H, Da Silva Costa F, Salomon LJ, Poon LC, Ferrazzi E, Mari G, Rizzo G, Kingdom JC, Kiserud T, Hecher K. Clinical Opinion: The diagnosis and management of suspected fetal growth restriction: an evi PMID 35026129
- Baschat AA, Galan HL, Lee W, DeVore GR, Mari G, Hobbins J, Vintzileos A, Platt LD, Manning FA. The role of the fetal biophysical profile in the management of fetal growth restriction. Am J Obstet Gynecol. 2022 Apr;226(4):475-486. doi: 10.1016/j.ajog.2022.01.020. PMID 35369904
- DeVore GR, Gumina DL, Hobbins JC. Assessment of ventricular contractility in fetuses with an estimated fetal weight less than the tenth centile. Am J Obstet Gynecol. 2019 Nov;221(5):498.e1-498.e22. doi: 10.1016/j.ajog.2019.05.042. Epub 2019 May 30. PMID 31153929
- DeVore GR, Polanco B, Lee W, Fowlkes JB, Peek EE, Putra M, Hobbins JC. Maternal rest improves growth in small-for-gestational-age fetuses (<10th percentile). Am J Obstet Gynecol. 2025 Jan;232(1):118.e1-118.e12. doi: 10.1016/j.ajog.2024.04.024. Epub 2024 May 21. PMID 38842845
- Higuchi H, Takagi S, Zhang K, Furui I, Ozaki M. Effect of lateral tilt angle on the volume of the abdominal aorta and inferior vena cava in pregnant and nonpregnant women determined by magnetic resonance imaging. Anesthesiology. 2015 Feb;122(2):286-93. doi: 10.1097/ALN.0000000000000553. PMID 25603203
- Lee SW, Khaw KS, Ngan Kee WD, Leung TY, Critchley LA. Haemodynamic effects from aortocaval compression at different angles of lateral tilt in non-labouring term pregnant women. Br J Anaesth. 2012 Dec;109(6):950-6. doi: 10.1093/bja/aes349. Epub 2012 Oct 11. PMID 23059960
Identifiers
NCT: NCT06919692 · 25-0289