PIEB vs CEI for Labor Analgesia: An MLAC Study

Study Results

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE4

Total Enrollment

31 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-10-31

Study Completion Date

2018-05-22

Brief Summary

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Utilizing a 'minimal local analgesic concentration (MLAC) study' design to first determine the relative potency of Programmed Intermittent Epidural Bolus (PIEB) compared to Continuous Epidural Infusion (CEI) and secondly to determine the mechanism to explain the potential PIEB efficacy advantage.

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Detailed Description

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Pregnant women who present to Labor and Delivery for an anticipated vaginal delivery will be identified as potential participants based on inclusion/exclusion criteria and their desire for labor epidural analgesia. Once identified, interested candidates will be fully informed of the study procedures, have all questions answered, and informed consent obtained. Pregnant participants will receive a labor epidural upon the patient's request and dosed per protocol to adequate analgesic level.

Patients will be randomized into 1 of 4 groups. Either group I or II in Study Part A and group III or IV in Study Part B in a double-blinded design. Each study part will run in parallel and independently.

Each group will have a varying concentration of bupivicaine infusion; continuous or intermittent bolus administration. In addition each group will have continuous or intermittent bolus administration of sufentanil. These concentrations and forms of administration will be blinded to both the patient and study administrator.

Each epidural infusion concentration and continuous or bolus administration will be determined to be a success or failure based on analgesic scores. The investigators' primary outcome will be the minimal local anesthetic concentration of the final participants in each respective group upon study completion.

DATA SAFETY MONITORING PLAN will follow standard of clinical care. Any adverse events will be reported to the PI and necessary adjustments to the protocol will be immediately instituted.

Conditions

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Pregnancy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Part A Group 1

CEI bupivacaine and CEI sufentanil

Group Type ACTIVE_COMPARATOR