RecruitingNot ApplicableNCT07411352

Left Lateral Position vs Supine Position to Reduce Active Labor Duration

Left Lateral Position Versus Supine Position in Reducing the Duration of the Active Phase of Labor: A Randomized, Single-Blind Clinical Trial

Sponsor

Universidad Nacional Autonoma de Honduras

Enrollment

188 participants

Start Date

Feb 15, 2026

Study Type

INTERVENTIONAL

Conditions

Labor Pain

Summary

This randomized clinical trial aims to compare the effect of the left lateral decubitus position versus the supine position on the duration of the active phase of labor in nulliparous women. A total of 188 participants will be randomly assigned to one of two groups. The intervention group will be placed in the left lateral decubitus position, while the control group will remain in the supine position. Both positions will be maintained for 30-minute intervals with 5-minute rest periods, continuing until delivery. The primary outcome is the duration of the active phase of labor. Secondary outcomes include rates of cesarean section, use of oxytocin and analgesics, and maternal and neonatal complications.

Eligibility

Sex: FEMALEMin Age: 18 YearsMax Age: 45 Years

Inclusion Criteria9

Signed and dated informed consent form.
Nulliparous woman.
Singleton pregnancy at ≥37 weeks of gestation.
Intact amniotic membranes.
Cephalic presentation.
In the active phase of labor (cervical dilation ≥6 cm).
Age ≥18 years.
No contraindication for vaginal delivery.
Possession of a mobile phone (for potential follow-up contact).

Exclusion Criteria11

Previous uterine surgery.
Maternal condition preventing vaginal delivery.
Fetal anomaly.
Premature rupture of membranes.
Multiple pregnancy.
Fetal demise.
Uterine myomas.
Maternal comorbidities (e.g., chronic hypertension, diabetes mellitus type -1/2/gestational, hypothyroidism).
Anemia.
Age \<18 years.
Preterm gestation (\<37 weeks).

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Interventions

OTHERLeft Lateral Decubitus Group

Participants will be placed in the left lateral decubitus position for periods of 30 minutes, interspersed with 5-minute rest periods. This cycle will continue throughout the active phase of labor until delivery.

OTHERSupine Position Group

Participants will remain in the supine position for periods of 30 minutes, interspersed with 5-minute rest periods. This cycle will continue throughout the active phase of labor until delivery.