Intraoperative Intravenous Lidocaine

August 25, 2009 updated by: Federal University of São Paulo

Effect of Intraoperative Intravenous Lidocaine on Pain After Hysterectomy

The objective of the present study was to evaluate the effect of intraoperative intravenous lidocaine on postoperative pain after hysterectomy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Study design A prospective, randomized, double-blind study was conducted according to ethical guidelines for research involving humans. The study was approved by the Ethics Committee of the institution and all patients signed a free informed consent form. The patients were randomly allocated to two groups consisting of the same number of subjects by drawing lots.

One physician prepared the solutions and handed them over to the anesthetist who was unaware of the content of the solutions. The volume of the solutions was the same. The researcher was unaware to which group the patient belonged until the end of the study.

Exclusion criteria Excluded from the study were patients with cardiac arrhythmia; myocardiopathy; altered cardiac conduction; psychiatric, hepatic or respiratory disease; and patients receiving any type of analgesic during the week before surgery.

Patients Forty women (ASA 1 or 2) aged 18 to 60 years undergoing hysterectomy were studied.

Treatment Patients of group 1 (n = 20) received lidocaine (2 mg/kg/h) and patients of group 2 (n = 20) received 0.9% saline infusion throughout the surgical procedure.

Anesthesia Oral midazolam (15 mg) was administered one hour before anesthesia as pre-anesthetic medication. Anesthesia was induced with 5 µg/kg fentanyl and 2 mg/kg propofol. Neuromuscular block was maintained with atracurium. Anesthesia was maintained with O2/isoflurane.

Patient assessment The supplemental morphine doses necessary during the first 24 h and the time to first analgesic request were recorded. Pain intensity was evaluated at rest on a numerical scale ranging from 0 to 10 (0 = no pain and 10 = most intense pain possible) at the following times: T0 (immediately after arousal), and 6, 12, 18 and 24 h after arousal. Side effects were recorded.

Statistical analysis The results were analyzed statistically with the Instat Graph program using parametric and nonparametric tests, depending on the nature of the variables studied. Measures of central tendency (means) and dispersion (standard deviation) were used. The level of significance was set at < 0.05. The following tests were used: Mann-Whitney test for age, body mass index, duration of anesthesia and surgery, time to first analgesic supplementation, total amount of morphine, pain intensity, and isoflurane consumed; Student t-test for weight and height; and Friedman test for pain intensity.

Study Type

Interventional

Enrollment (Actual)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
      • São Paulo, Brazil, 04023-062
        • Universidade Federal de Sao Paulo
    • Rua Botucatu-593
      • São Paulo, Rua Botucatu-593, Brazil, 04023-062
        • Rioko K Sakata- Universidade Federal de São Paulo

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 60 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • ASA 1 or 2, aged 18 to 60 years undergoing hysterectomy

Exclusion Criteria:

  • Cardiac arrhythmia; myocardiopathy
  • Altered cardiac conduction
  • Psychiatric, hepatic or respiratory disease
  • Patients receiving any type of analgesic during the week before surgery

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Lidocaine, pain intensity and Saline
(2 mg/kg/h) and patients of group 2 (n = 20) received 0.9% saline infusion throughout the surgical procedure
Drug: Lidocaine
Lidocaine 2 mg/kg/h- during surgical procedure Saline
Other Names:
  • Intravenous lidocaine

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Pain
Time Frame: 24hours
24hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Federal University of São Paulo

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2008

Primary Completion (Actual)

October 1, 2008

Study Completion (Actual)

December 1, 2008

Study Registration Dates

First Submitted

August 24, 2009

First Submitted That Met QC Criteria

August 25, 2009

First Posted (Estimate)

August 26, 2009

Study Record Updates

Last Update Posted (Estimate)

August 26, 2009

Last Update Submitted That Met QC Criteria

August 25, 2009

Last Verified

August 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IO-Lido

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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