Effects of labor epidural analgesia with ultra-low concentration and low concentration ropivacaine on the second stage of labor

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2300071852

Enrollment

Unknown

Registered

2023-05-26

Start date

2023-06-01

Completion date

Unknown

Last updated

2023-06-12

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

Conditions

labor epidural analgesia

Interventions

Ultra-low concentration group:Ultra-low concentration of ropivacaine (0.1%)+ sufentanil (0.5ug/ml)

Low concentration group:Low concentration of ropivacaine (0.1%)+ sufentanil (0.5ug/ml)

Eligibility

Sex/Gender

Female

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: (1) Healthy primipara; (2) age 18-40 years old; (3) Full-term (pregnancy = 37 weeks), singleton, presentation of the head; (4) Require epidural analgesia; (5) American Association of Anesthesiologists (ASA) Class II; (6) Cervical dilatation =5cm

Exclusion criteria

Exclusion criteria: (1) Body mass index (BMI) 35 kg/m2; (2) Severe hypertension or bleeding during pregnancy; (3) Those who are not suitable for vaginal delivery as assessed by obstetricians; (4) The allergic history or contraindications of ropivacaine and sufentanil; (5) contraindication of epidural analgesia

Design outcomes

Primary

Measure	Time frame
Duration of the second stage of labor;	—

Secondary

Measure	Time frame
Mode of delivery;Total dose of local anesthetic, local anesthetic dose required for supplementary analgesia;Duration of the first stage of labor;NRS;Maternal satisfaction;Apgar score of newborn at 1 minute and 5 minutes;	—

Countries

China

Contacts

Public ContactZhang Yueying

The Affiliated Hospital of Xuzhou Medical University

zyy0218@126.com+86 180 5226 8602

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026