Efficacy of Preventive Ketamine on Postoperative Pain

NCT ID: NCT04908579

Last Updated: 2025-10-02

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

RECRUITING

Clinical Phase

PHASE4

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-06-15

Study Completion Date

2026-02-28

Brief Summary

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* Although bariatric surgery is mainly performed laparoscopically, analgesic optimization is still essential to reduce complications and to improve the patients' comfort. In laparoscopic sleeve gastrectomy, the intraoperative peritoneal instillation of bupivacaine hydrochloride (30 ml, 0.25%) was known to be safe and effective in reducing postoperative pain, nausea, and vomiting.
* Furthermore, usage of ketamine both as a pre and post-operative pain management is well established. Ketamine can be used solely or in combination with other co-adjuvant drugs, increasing their efficacy. Many therapeutic properties of ketamine have been attributed to its antagonism mechanism to N-Methyl-D-aspartate receptors.

Detailed Description

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Conditions

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Postoperative Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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- GROUP (I): 30 patients

Group Type ACTIVE_COMPARATOR

bupivacaine(intraperitoneally) and ketamine (intraperitoneally)

Intervention Type DRUG

1. 40 ml volume of bupivacaine 0.25% + ketamine 0.5 mg/kg distributed as 30 ml intraperitoneally and 10 ml as port site infiltration
2. 10 ml normal saline 0.9% will be given intravenous.

- GROUP (II): 30 patients

Group Type ACTIVE_COMPARATOR

bupivacaine(intraperitoneally) and ketamine (intravenously)

Intervention Type DRUG

1. 40 ml volume of bupivacaine 0.25% only distributed as 30 ml intraperitoneally and 10 ml as port site infiltration
2. 10 ml volume of ketamine 0.5 mg/kg intravenously will be given after delivering the gastric sleeve and before start closure of port sites.

- GROUP (III) (Control): 30 patients

Group Type ACTIVE_COMPARATOR

bupivacaine(intraperitoneally)

Intervention Type DRUG

1. 40 ml volume of bupivacaine 0.25% only distributed as 30 ml intraperitoneally and 10 ml as port site infiltration
2. 10 ml normal saline 0.9% will be given intravenous.

Interventions

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bupivacaine(intraperitoneally) and ketamine (intraperitoneally)

1. 40 ml volume of bupivacaine 0.25% + ketamine 0.5 mg/kg distributed as 30 ml intraperitoneally and 10 ml as port site infiltration
2. 10 ml normal saline 0.9% will be given intravenous.

Intervention Type DRUG

bupivacaine(intraperitoneally) and ketamine (intravenously)

1. 40 ml volume of bupivacaine 0.25% only distributed as 30 ml intraperitoneally and 10 ml as port site infiltration
2. 10 ml volume of ketamine 0.5 mg/kg intravenously will be given after delivering the gastric sleeve and before start closure of port sites.

Intervention Type DRUG

bupivacaine(intraperitoneally)

1. 40 ml volume of bupivacaine 0.25% only distributed as 30 ml intraperitoneally and 10 ml as port site infiltration
2. 10 ml normal saline 0.9% will be given intravenous.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* \- Body mass index \> 35 and \< 60 kg/m2
* Either medically free or with well controlled hypertension and/or diabetes.

Exclusion Criteria

* \- Patient's refusal to participate in the study
* BMI \> 60 kg/m2.
* Age less than 21 years.
* Patients with severe systemic disease which is not life-threatening.
* Patients on antipsychotics, antidepressants and/or corticosteroids.
* Patients with history of obstructive sleep apnea.
* Allergic reaction to any of the study medications.
Minimum Eligible Age

21 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Ain Shams University

OTHER

Sponsor Role lead

Responsible Party

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Ibrahim Mamdouh Esmat

Assistant Professor of Anesthesia and Intensive Care Department, Faculty of Medicine, Ain- shams University, Cairo, Egypt.

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Ain-Shams University Hospitals

Cairo, , Egypt

Site Status RECRUITING

Countries

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Egypt

Central Contacts

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Ibrahim Mamdouh Esmat

Role: CONTACT

01001241928

Facility Contacts

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Ibrahim Mamdouh Esmat

Role: primary

01001241928

Other Identifiers

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FMASU MD 87/ 2021

Identifier Type: -

Identifier Source: org_study_id

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