Evaluation of Regional Distribution of Ventilation During Labor With or Without Epidural Analgesia

NCT ID: NCT02523755

Last Updated: 2016-12-06

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

PHASE4

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-09-30

Study Completion Date

2016-12-31

Brief Summary

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With an efficient epidural analgesia the physiological effects of pain are disabled during labor. Pain may cause an increase of minute volume, oxygen consumption and a decrease of paCO2 (Arterial CO2 pressure). The study will evaluate the lung function before and after labor with and without epidural analgesia. With more efficient breathing, the occurence of atelectasis should be reduced; this effect will be investigated in these settings for the first time with the electrical impedance tomography, which is a completely non-invasive measure.

Detailed Description

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The bedside efficacy of the electrical impedance tomography (EIT) in intensive care settings during mechanical ventilation is known. However, no studies demonstrate its utility during epidural analgesia for labor.

The purpose of this study is to evaluate lung function and atelectasis in pregnant women with or without epidural analgesia, during labor and after delivery.

Only adult consenting patients ASA I \& ASA II (American Society of Anaesthesiologists) are included in the study. According to institutional protocols lumbal epidural catheter is inserted and tested at the start of the labor, while patients' parameters are monitored.

Refusal to epidural analgesia, technical difficulties to insert the epidural catheter or any medical contraindication will result in inclusion of these patients in the control group.

Measurement with EIT is not invasive and harmful neither for the mother nor for the child.

It consists of putting a belt around the chest; this belt is linked to a monitor which measures the impedance of the different lung regions.

Electrical impedance measurements will be done for short periods of maximum 5 min. each as follows:

1. Placement before injection of local anesthetics through the epidural catheter in the study goup; in the control subset placement of the belt will be done when an epidural anesthetic would have been considered.
2. 1 hour after placement of the belt
3. 1 hour after delivery

These periods will be compared.

Conditions

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Pregnancy Atelectasis

Keywords

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epidural analgesia for labor respiratory function electrical impedance tomography

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Epidural analgesia Ropivacaine

Placement of an epidural catheter to achieve pain relief

Group Type ACTIVE_COMPARATOR

Epidural analgesia Ropivacaine

Intervention Type DRUG

Measurement of regional distribution as assessed by EIT before and after injection of local anesthetics

Absence of epidural analgesia

Intervention Type DRUG

Measurement of regional distribution as assessed by EIT before and after delivery

Absence of epidural analgesia

No placement of an epidural catheter either because of patient refusal or contraindication

Group Type SHAM_COMPARATOR

Epidural analgesia Ropivacaine

Intervention Type DRUG

Measurement of regional distribution as assessed by EIT before and after injection of local anesthetics

Absence of epidural analgesia

Intervention Type DRUG

Measurement of regional distribution as assessed by EIT before and after delivery

Interventions

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Epidural analgesia Ropivacaine

Measurement of regional distribution as assessed by EIT before and after injection of local anesthetics

Intervention Type DRUG

Absence of epidural analgesia

Measurement of regional distribution as assessed by EIT before and after delivery

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* ASA I
* ASA II

Exclusion Criteria

* Caesarian
* \< 18 years
* Expulsions
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Universitair Ziekenhuis Brussel

OTHER

Sponsor Role lead

Responsible Party

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Veerle Van Mossevelde

Data Nurse

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Maxim Doutreluigne, MD

Role: PRINCIPAL_INVESTIGATOR

Universitair Ziekenhuis Brussel

Laszlo L Szegedi, Prof.

Role: STUDY_CHAIR

Universitair Ziekenhuis Brussel

Locations

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Universitair Ziekenhuis Brussel

Jette, Vlaams Brabant, Belgium

Site Status

Countries

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Belgium

Other Identifiers

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EIT

Identifier Type: -

Identifier Source: org_study_id