Minimum Effective Dose (MED) & Epidural Bupivacaine

NCT ID: NCT02116842

Last Updated: 2014-04-17

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

UNKNOWN

Clinical Phase

PHASE4

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-12-31

Study Completion Date

2014-05-31

Brief Summary

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Local anaesthetics are highly toxic drugs. They can cause toxicity by an absolute overdose, accidental injection in a blood vessel or slow absorption from the area of injection. The risk of toxicity when performing regional anaesthesia can be reduced significantly by injecting the optimal dose of local anaesthetic at the correct site.

To date most of the local anaesthetic dose finding studies for epidural labour analgesia has focused on ED50 ( the dose effective in 50% of patients). The purpose of this research study is to find out the ED95 dose (the dose effective in 95% of patients) of local anaesthetic for epidural analgesia in labour.

The dose determined from this research trial will guide the anaesthetists to the optimal starting dose of the local anaesthetics for epidural analgesia in labour. This would lead to decreased chances of toxicity and will improve patient safety.

We aim to recruit a total of 100 pregnant patients in early labour (cervical dilatation ≤ 5 cm) requesting epidural analgesia to answer the research question based on the continual reassessment method. Patients will be recruited according to well-defined criteria. They will be fully informed about the study and have the choice of not participating or opting out at any time during the study. It is not going to affect the kind of treatment they receive. The experts in the field with full safety precautions will perform this study at St James' Hospitals, Leeds.

Detailed Description

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Conditions

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Pregnancy Labour Primigravida Labour Epidural Block

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Caregivers Outcome Assessors

Study Groups

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0.075% bupivacaine

Consenting patients randomised to receive 0.075% bupivacaine and 40 µg fentanyl.

Group Type EXPERIMENTAL

0.075% bupivacaine

Intervention Type DRUG

Epidural block in early labour.

40 µg fentanyl

Intervention Type DRUG

Given with different doses of bupivacaine in epidural block.

0.1% bupivacaine

Consenting patients randomised to receive 0.1% bupivacaine and 40 µg fentanyl.

Group Type EXPERIMENTAL

0.1% bupivacaine

Intervention Type DRUG

Epidural block in early labour.

40 µg fentanyl

Intervention Type DRUG

Given with different doses of bupivacaine in epidural block.

Interventions

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0.1% bupivacaine

Epidural block in early labour.

Intervention Type DRUG

0.075% bupivacaine

Epidural block in early labour.

Intervention Type DRUG

40 µg fentanyl

Given with different doses of bupivacaine in epidural block.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* American Society of Anaesthesiologists (ASA) 1-3 patients
* Primigravida (1st pregnancy) patients requesting epidural analgesia in early labour (≤ 5 cm cervical dilatation.

Exclusion Criteria

* Primigravida (1st pregnancy) patients requesting epidural analgesia in late labour (\> 5 cm cervical dilatation)
* Multigravida patients ( ≥ 2nd pregnancy)
* ASA \> 3
* Allergy to Bupivacaine
* Unable to give written informed consent
* BMI \>35
* Abnormal blood coagulation profile
* Patients taking any medication that are indicated in the Summary of Product Characteristics (SPC) as not recommended
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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National Institute of Academic Anaesthesia (NIAA), UK

UNKNOWN

Sponsor Role collaborator

Obstetric Anaesthetists' Association United Kingdom

OTHER

Sponsor Role collaborator

University of Leeds

OTHER

Sponsor Role lead

Responsible Party

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Neville Young

Sponsor Quality Assurance Manager

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Professor Philip M Hopkins

Role: PRINCIPAL_INVESTIGATOR

University of Leeds

Locations

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Leeds Teaching Hospitals NHS Trust

Leeds, West Yorkshire, United Kingdom

Site Status RECRUITING

Countries

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United Kingdom

Central Contacts

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Neville Young

Role: CONTACT

44 113 392 6459

Leeds Sponsor Office Quality Assurance Department

Role: CONTACT

44 113 392 2878

Other Identifiers

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2010-020020-21

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

11730

Identifier Type: OTHER

Identifier Source: secondary_id

AN10/9307

Identifier Type: -

Identifier Source: org_study_id

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