Intraoperative Intravenous Lidocaine

NCT ID: NCT00965796

Last Updated: 2009-08-26

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

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-05-31

Study Completion Date

2008-12-31

Brief Summary

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

Detailed Description

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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.

Conditions

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Pain Intensity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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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

Group Type EXPERIMENTAL

Lidocaine

Intervention Type DRUG

Lidocaine 2 mg/kg/h- during surgical procedure Saline

Interventions

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Lidocaine

Lidocaine 2 mg/kg/h- during surgical procedure Saline

Intervention Type DRUG

Other Intervention Names

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Intravenous lidocaine

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Federal University of São Paulo

OTHER

Sponsor Role lead

Responsible Party

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Universidade Federal de São Paulo

Principal Investigators

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Rioko K Sakata, PhD

Role: PRINCIPAL_INVESTIGATOR

Universidade Federal de São Paulo

Locations

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Rioko K Sakata- Universidade Federal de São Paulo

São Paulo, Rua Botucatu-593, Brazil

Site Status

Universidade Federal de São Paulo

São Paulo, São Paulo, Brazil

Site Status

Countries

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Brazil

Other Identifiers

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IO-Lido

Identifier Type: -

Identifier Source: org_study_id

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