Individualized Timing of Analgesia and Effectiveness of Labor Analgesia

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-08-31

Study Completion Date

2017-07-31

Brief Summary

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Neuraxial analgesia is the gold standard to relieve labor pain. A recent "Practice guidelines for obstetric anesthesia" suggests that neuraxial analgesia should be provided in the early stage of labor (cervical dilation \< 5 cm) or on a individualized basis. The purpose of this randomized controlled trial is to investigate whether neuraxial labor analgesia administered on an individualized basis can improve analgesia quality and maternal satisfaction.

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Detailed Description

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Neuraxial analgesia is the gold standard to relieve labor pain. It also helps to attenuate maternal anxiety and improve maternal satisfaction. A recent "Practice guidelines for obstetric anesthesia" suggests that neuraxial analgesia should be provided in the early stage of labor (cervical dilation \< 5 cm) or, for some special patients, be provided on a individualized basis. Studies showed that, when compared with late administration, early administration of labor analgesia resulted in equivocal findings for spontaneous, instrumented, and cesarean delivery. The investigators hypothesize that neuraxial labor analgesia provided on an individualized basis will further improve analgesia quality and maternal satisfaction. The purpose of this randomized controlled trial is to investigate whether neuraxial labor analgesia administered on an individualized basis can improve analgesia quality and maternal satisfaction.

Conditions

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Labor Pain Analgesia, Obstetrical Early Medical Intervention

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Individualized epidural analgesia

Epidural catheterization will be performed after the beginning of the first stage of labor. Epidural analgesia will begin when asked by parturients and the numeric rating scale of pain is 5 or higher. A loading dose (10 ml mixture of 0.1% ropivacaine and 0.5 ug/ml sufentanil) will be administered through the epidural catheter. After a 20-minute observation, a patient-controlled analgesia pump (containing a mixture of 0.08% ropivacaine and 0.4 ug/ml sufentanil) will be connected to the epidural catheter and programmed to deliver a 6-ml bolus with a 20-minute lockout interval and a 4 ml/h background infusion. Analgesia will be terminated at the end of the third stage of labor.

Group Type EXPERIMENTAL

Individualized epidural analgesia

Intervention Type DRUG

Epidural analgesia will begin when asked by the parturients (during the first stage of labor) and the numeric rating scale is 5 or higher. Analgesia will be terminated at the end of the third stage of labor.

Routine epidural analgesia

Epidural catheterization will be performed after the beginning of the first stage of labor and the cervix is dilated to 1 cm or more. Epidural analgesia will then begin. A loading dose (10 ml mixture of 0.1% ropivacaine and 0.5 ug/ml sufentanil) will be administered through the epidural catheter. After a 20-minute period observation, a patient-controlled analgesia pump (containing a mixture of 0.08% ropivacaine and 0.4 ug/ml sufentanil) will be connected to the epidural catheter and programmed to deliver a 6-ml bolus with a 20-minute lockout interval and a 4 ml/h background infusion. Analgesia will be terminated at the end of the third stage of labor.

Group Type ACTIVE_COMPARATOR

Routine epidural analgesia

Intervention Type DRUG

Epidural analgesia will begin when asked by the parturients (during the first stage of labor) and the cervix is dilated to 1 cm or more. Analgesia will be terminated at the end of the third stage of labor.

Interventions

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Individualized epidural analgesia

Epidural analgesia will begin when asked by the parturients (during the first stage of labor) and the numeric rating scale is 5 or higher. Analgesia will be terminated at the end of the third stage of labor.

Intervention Type DRUG

Routine epidural analgesia

Epidural analgesia will begin when asked by the parturients (during the first stage of labor) and the cervix is dilated to 1 cm or more. Analgesia will be terminated at the end of the third stage of labor.

Intervention Type DRUG

Other Intervention Names

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Individualized analgesia with sufentanil and ropivacaine Routine analgesia with sufentanil and ropivacaine

Eligibility Criteria

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Inclusion Criteria

1. Nulliparas (aged 18-36 years) with single cephalic term pregnancy;
2. Plan to deliver vaginally, and are considered suitable for a trial of vaginal delivery by obstetricians;
3. Admitted to the delivery room;
4. Agree to receive epidural analgesia during labor.

Exclusion Criteria

1. History of psychiatric disease (indicate those that are diagnosed before or during pregnancy by psychiatrists);
2. Presence of contraindications to epidural analgesia, which includes: (1) History of infectious disease of the central nervous system (poliomyelitis, cerebrospinal meningitis, encephalitis, etc.); (2) History of spinal or intra-spinal disease (trauma or surgery of spinal column, intra-spinal canal mass, etc.); (3) Systemic infection (sepsis); (4) Skin or soft tissue infection at the site of epidural puncture; (5) Coagulopathy.
3. Other reasons that are considered unsuitable for study participation.

Minimum Eligible Age

18 Years

Maximum Eligible Age

36 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No