Delivery, ObstetricNCT07745192
Effects of a Lateral Position With Hip Flexion and Femoral Internal Rotation During the Second Stage of Labor in Nulliparous Women Receiving Epidural Analgesia
A study testing Lateral Position With Hip Flexion and Femoral Internal Rotation and Conventional Lateral Position in people with Delivery, Obstetric and Labor, Obstetric, run by Second Affiliated Hospital of Wenzhou Medical University at 1 site in China.
Trial summary
This randomized clinical study evaluated the effects of a lateral position with hip flexion and femoral internal rotation during the second stage of labor in nulliparous women receiving epidural labor analgesia. Read more about this study
- Who is it for?
- Ages 22 to 34 years, women only
- Conditions the study is for
- Delivery, Obstetric, Labor, Obstetric
- What is being tested?
- Lateral Position With Hip Flexion and Femoral Internal Rotation and Conventional Lateral Position
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 230 participants
- Where
- 1 siteChina
- Study dates
- 1 Feb 2025to 30 Dec 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 22 to 34 years
- Women only
- No healthy volunteers
- Adult
Who may be able to join
- Nulliparous women.
- Age 22 to 34 years.
- Singleton pregnancy.
- Cephalic presentation confirmed by ultrasonography after 37 weeks of gestation.
- Gestational age of 37 to 41 weeks.
- Estimated fetal weight of 2,500 to 3,500 g.
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- No birth-canal abnormalities on vaginal examination.
- Effective epidural labor analgesia during the first stage of labor.
- Sufficient cognitive capacity to understand and cooperate with the study procedures.
- Ability and willingness to provide written informed consent.
Who cannot join
- Organic heart, liver, or kidney disease.
- Prenatal indication for cesarean delivery.
- Pubic symphysis separation.
- Lower-limb disease or impaired mobility.
- Precipitous labor.
- Second stage of labor lasting less than 30 minutes.
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- Severe mental illness.
- Fetal malformation.
- Withdrawal from the study.
Trial locations and contacts
1 site in 1 country.
China1 site
Nanpu Branch of The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University
Wenzhou, Zhejiang, 325000
About this study
This randomized clinical study evaluated the effects of a lateral position with hip flexion and femoral internal rotation during the second stage of labor in nulliparous women receiving epidural labor analgesia. Participants were assigned to either an observation group using the modified lateral position or a control group using the conventional lateral position. The study compared second-stage labor duration, additional obstetric interventions, maternal outcomes, perineal outcomes, and neonatal outcomes between the two groups.
- Conditions
- Delivery, Obstetric, Labor, Obstetric
- Being tested
- Lateral Position With Hip Flexion and Femoral Internal Rotation, Conventional Lateral Position
- Keywords
- second stage of labor, epidural labor analgesia, maternal position, lateral position, hip flexion, femoral internal rotation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Lateral Position With Hip Flexion and Femoral Internal RotationBehavioural
Participants adopted a modified lateral position during the second stage of labor. The position involved lateral positioning facing the side opposite to the fetal back, hip flexion, knee flexion, and 30°-40° femoral internal rotation with midwife assistance. The position was used during uterine contractions with guided bearing-down efforts and was alternated with a semi-recumbent position according to the study protocol.
Conventional Lateral PositionBehavioural
Participants adopted the conventional lateral position during the second stage of labor under routine intrapartum care and midwife assistance. During uterine contractions, participants performed bearing-down efforts in the lateral position, followed by intervals of rest and semi-recumbent positioning according to the study protocol.
| Study group | Role | What they receive |
|---|---|---|
| Modified Lateral Position Group | Experimental | Participants in this group adopted a lateral position with hip flexion and femoral internal rotation during the second stage of labor under midwife assistance. Receives: Behavioral: Lateral Position With Hip Flexion and Femoral Internal Rotation |
| Conventional Lateral Position Group | Active comparator | Participants in this group adopted the conventional lateral position during the second stage of labor under routine intrapartum care and midwife Receives: Behavioral: Conventional Lateral Position |
What is being measured
The primary outcome is the main question the study is designed to answer.
Duration of the Second Stage of Labor
Measured: From full cervical dilatation to delivery of the neonate
Additional Obstetric Interventions During the Second Stage of Labor
Additional obstetric interventions during the second stage of labor, classified as none, forceps-assisted vaginal birth, cesarean delivery during the second stage, vaginal birth after manual fetal-head rotation, or vaginal birth with episiotomy as the principal intervention.
Measured: During the second stage of labor
Secondary outcomes (4)
Duration of the First Stage of Labor
Duration of the first stage of labor, measured in minutes.
Measured: From onset of regular uterine contractions to full cervical dilatation
Duration of the Third Stage of Labor
Duration of the third stage of labor, measured in minutes.
Measured: From delivery of the neonate to delivery of the placenta
Postpartum Blood Loss
Postpartum blood loss, measured in milliliters.
Measured: Within 2 hours after delivery
Perineal Outcomes
Perineal outcomes classified as intact perineum, episiotomy, first-degree perineal laceration, or second-degree or higher perineal laceration.
Measured: At delivery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Aug 2026
- Study start1 Feb 2025
- Primary completion30 Dec 2025
- Study completion30 Dec 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Delivery, ObstetricStudies of the same condition, open and under way.
- More trials run by Second Affiliated Hospital of Wenzhou Medical UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Supportive care
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 230 participants (actual)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07745192
- Sponsor's protocol ID
- SAHoWMU-CR2024-07-118
- Status last verified
- Jul 2026
- First submitted
- 30 Jul 2026
- Last updated
- 4 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 4 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of a Lateral Position With Hip Flexion and Femoral Internal Rotation During the Second Stage of Labor in Nulliparous Women Receiving Epidural Analgesia
- ClinicalTrials.gov ID
- NCT07745192
- Acronym / sponsor ID
- SAHoWMU-CR2024-07-118
- Conditions
- Delivery, Obstetric, Labor, Obstetric
- Keywords
- second stage of labor, epidural labor analgesia, maternal position, lateral position, hip flexion, femoral internal rotation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 230 participants (actual)
- Lead sponsor
- Second Affiliated Hospital of Wenzhou Medical UniversityUniversity, hospital or other
- Study start
- 1 Feb 2025 (actual)
- Primary completion
- 30 Dec 2025 (actual)
- Study completion
- 30 Dec 2025 (actual)
- First posted
- 4 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This randomized clinical study evaluated the effects of a lateral position with hip flexion and femoral internal rotation during the second stage of labor in nulliparous women receiving epidural labor analgesia. Participants were assigned to either an observation group using the modified lateral position or a control group using the conventional lateral position. The study compared second-stage labor duration, additional obstetric interventions, maternal outcomes, perineal outcomes, and neonatal outcomes between the two groups.
Study design
- Primary purpose
- Supportive care
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Modified Lateral Position Group | Experimental | Behavioral: Lateral Position With Hip Flexion and Femoral Internal RotationParticipants in this group adopted a lateral position with hip flexion and femoral internal rotation during the second stage of labor under midwife assistance. |
| Conventional Lateral Position Group | Active comparator | Behavioral: Conventional Lateral PositionParticipants in this group adopted the conventional lateral position during the second stage of labor under routine intrapartum care and midwife |
Who may qualify
- Ages
- 22 to 34 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (10 listed)
- Nulliparous women.
- Age 22 to 34 years.
- Singleton pregnancy.
- Cephalic presentation confirmed by ultrasonography after 37 weeks of gestation.
- Gestational age of 37 to 41 weeks.
Key exclusion criteria (9 listed)
- Organic heart, liver, or kidney disease.
- Prenatal indication for cesarean delivery.
- Pubic symphysis separation.
- Lower-limb disease or impaired mobility.
- Precipitous labor.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Lateral Position With Hip Flexion and Femoral Internal RotationParticipants adopted a modified lateral position during the second stage of labor. The position involved lateral positioning facing the side opposite to the fetal back, hip flexion, knee flexion, and 30°-40° femoral internal rotation with midwife assistance. The position was used during uterine contractions with guided bearing-down efforts and was alternated with a semi-recumbent position according to the study protocol. | Behavioural | Modified Lateral Position Group |
| Conventional Lateral PositionParticipants adopted the conventional lateral position during the second stage of labor under routine intrapartum care and midwife assistance. During uterine contractions, participants performed bearing-down efforts in the lateral position, followed by intervals of rest and semi-recumbent positioning according to the study protocol. | Behavioural | Conventional Lateral Position Group |
Primary outcome
Duration of the Second Stage of Labor
Time frame: From full cervical dilatation to delivery of the neonate
Additional Obstetric Interventions During the Second Stage of Labor
Time frame: During the second stage of labor
Additional obstetric interventions during the second stage of labor, classified as none, forceps-assisted vaginal birth, cesarean delivery during the second stage, vaginal birth after manual fetal-head rotation, or vaginal birth with episiotomy as the principal intervention.
4 secondary outcomes
Duration of the First Stage of Labor
Time frame: From onset of regular uterine contractions to full cervical dilatation
Duration of the Third Stage of Labor
Time frame: From delivery of the neonate to delivery of the placenta
Postpartum Blood Loss
Time frame: Within 2 hours after delivery
Perineal Outcomes
Time frame: At delivery
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Aug 2026.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Lateral Position With Hip Flexion and Femoral Internal Rotation and Conventional Lateral Position in people with Delivery, Obstetric and Labor, Obstetric, run by Second Affiliated Hospital of Wenzhou Medical University at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 10 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Duration of the Second Stage of Labor (time frame: From full cervical dilatation to delivery of the neonate). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Aug 2026.