Ten-Year Practice of Labor Pain Control in China

Condition(s) targeted: Labor Pain

Intervention: CSEA with PCA (Procedure); CSEA with IBI (Procedure); EA with PCA (Procedure); EA with IBI (Procedure)

Phase: N/A

Status: Not yet recruiting

Sponsored by: Nanjing Medical University

Official(s) and/or principal investigator(s):
XiaoFeng Shen, MD, Study Chair, Affiliation: Nanjing Medical University

Overall contact:
FuZhou Wang, MD, Phone: 86-25-84460777, Ext: 3301, Email: zfwang50@gmail.com

Since 1999, labor pain control has being performed in China, and the initial time of analgesia is at the cervix >= 2 cm. Meanwhile, American Society of Obstetrics & Gynecology recommended that the labor analgesia with neuraxial block should be performed at the cervix >= 4 cm in 2002. After that, the threshold has been revised to at least >= 2 cm in 2006 by the Society. However, in China, the practice of labor analgesia with neuraxial block has being performed for over seven years. Up to now, the practice has being experienced during this ten-year period at the cervix around 1 cm. The investigators hypothesized that labor pain control in different stage had different characteristics and had different influence on patients short- and long-lasting outcomes. This study is mainly to investigate different labor analgesia procedures in different stage since the initial of the practice in 1999, and assess their influence on the outcomes to display the trajectory of development of labor analgesia in China of which might fit to the the whole process of the study of labor analgesia throughout the world. All these were done by analyzing the data records since from January 1999 to December 2008.

Official title: A Ten-Year Practice of Labor Pain Control in China

Study design: Other, Retrospective

Primary outcome: Rate of cesarean delivery

Secondary outcome:

Rate of instrument-assisted delivery

Indications of cesarean delivery

Maternal Visual Analog Scale (VAS) rating of pain

Duration of analgesia

Maternal satisfaction with analgesia

Maternal oral temperature

Use of oxytocin after analgesia

Low back pain at 3 months after vaginal delivery

Breastfeeding success at 6 weeks after vaginal delivery

Neonatal one-minute Apgar scale

Neonatal five-minute Apgar scale

Incidence of maternal side effects

Umbilical-cord gases analysis

Minimum age: 18 Years. Maximum age: 45 Years. Gender(s): Female.

Criteria:

Inclusion Criteria:

- Parturients used labor analgesia

Exclusion Criteria:

- Following criteria were based on the records of information received from the ten-year

practice screened by investigators:

1. Chronic pain and psychiatric diseases records

2. Participants younger than 18 years or older than 45 years

3. Alcohol addictive or narcotic dependent patients were excluded for their influence on the analgesic efficacy of the epidural analgesics

4. Subjects with a nonvertex presentation or scheduled induction of labor

5. Diagnosed diabetes mellitus and pregnancy-induced hypertension

6. Twin gestation and breech presentation

FuZhou Wang, MD, Phone: 86-25-84460777, Ext: 3301, Email: zfwang50@gmail.com

Nanjing Maternal and Child Health Care Hospital, Nanjing, Jiangsu 210004, China

Starting date: January 2009
Ending date: May 2009
Last updated: October 20, 2008