Comparison of Amniotic Fluid Index Between Before and After Maternal Position Change in Upright and Left Lateral Decubitus Position

Randomized Controlled Trial of Amniotic Fluid Index Compared Between After Upright and Left Lateral Decubitus Maternal Position Change

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03536689

Enrollment

100

Registered

2018-05-25

Start date

2018-02-20

Completion date

2018-09-30

Last updated

2020-10-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pregnancy Related

Keywords

Amniotic fluid index

Brief summary

Comparison of amniotic fluid index between before and after maternal position change in Upright and left lateral decubitus maternal position

Detailed description

Amniotic fluid has many important roles in fetal development such as the development of the digestive tract and respiratory system. The quantity of amniotic fluid can be measured by ultrasonography, measuring the deepest pocket in 4 quadrants of uterus then summarize as one value known as amniotic fluid index(AFI). The AFI has the normal range between 5-25 cm. The low AFI (\< 5 cm) is associated with abnormal fetal heart rate, and the abnormal AFI does affect to the treatment during the antepartum and intrapartum phase. However , there is the study shown that when compared to the single deepest pocket (SDP) , AFI could detect the oligohydramnios more which might led to the unnecessary labor induction or operative delivery without the significant change of perinatal outcome. To increase the accuracy of AFI, we theorize that maternal position change might affect the amniotic fluid position which would increase the visual of the amniotic fluid as well.

Interventions

DIAGNOSTIC_TESTAmniotic fluid index

Ultrasonography of the amniotic fluid level in each 4 quadrants of uterus then summerize as one value to measure the quantity of amniotic fluid index

Study design

Allocation

RANDOMIZED

Intervention model

FACTORIAL

Primary purpose

DIAGNOSTIC

Masking

NONE

Intervention model description

Factorial 2-by-2 open labeled randomised controlled trial

Eligibility

Sex/Gender

FEMALE

Age

20 Years to 34 Years

Healthy volunteers

Yes

Inclusion criteria

* Pregnant women age 20-34 years whose gestational age was confirmed by ultrasonography before 24 weeks of gestation

Exclusion criteria

* Pregnant women with multifetal pregnancy * Pregnant women who have underlying disease * Pregnant women who have the history of premature rupture of amniotic membrane * Pregnant women who have amniotic fluid index below 5 cm (oligohydramnios) * Pregnant women who have amniotic fluid index more than 25 cm (polyhydramnios) * Pregnant women whose her baby has the fetal anomaly

Design outcomes

Primary

Measure	Time frame	Description
Amniotic fluid index change after maternal position change	15 minutes	Amniotic fluid index before and after maternal position change

Countries

Thailand

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026