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Low-Dose Ketamine Infusion for Post-Operative Pain in Patients Undergoing Laparoscopic Cholecyctectomy

Effect of Low-Dose Ketamine Infusion on Quality and Duration of Post-Operative Pain in Patients Undergoing Laparoscopic Cholecyctectomy Under General Anesthesia

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06966596
Enrollment
116
Registered
2025-05-13
Start date
2024-11-01
Completion date
2025-03-31
Last updated
2025-05-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Laparoscopic Cholecystectomy

Keywords

Cholelithiasis, Cholecystectomy, Laparoscopic surgery, Ketamine, Analgesia

Brief summary

Following surgery, acute pain is a typical issue with a variety of implications. Surgeons, anesthesia specialists, and patients all desire effective pain management with the fewest possible adverse effects. At low dosages (\<0.3 mg/kg/hr) and large doses (\>1 mg/kg), ketamine is utilized as an analgesic and an anaesthetic. Ketamine at high dosages causes dissociative anaesthesia with little impact on breathing or airway reflexes. Although this medication is a powerful analgesic, its usage is restricted due to it leads to agitation and hallucinations during awakening. Nevertheless, it has a potent analgesic effect when administered at a subanesthetic dose, and ketamine's psychomimetic side effects are rare at these dosages. This study intended to examine the role of low-dose for post-operative pain control in patients undergoing LC, despite the fact that numerous studies have been conducted on the subject and that the results have been inconsistent.

Detailed description

Most patients still stay overnight after a laparoscopic cholecystectomy (LC) due to post-operative pain, which continues to be the principal obstacle to early patient discharge. On the first postoperative day following laparoscopic procedures, patients may have mild to moderate postoperative pain, with decreased pain intensity in the shoulder area (from the subdiaphragmatic region), particularly intra-abdominal and local discomfort at the incision site. Because of its analgesic properties and cardiovascular stability, ketamine has been used extensively in anesthesia practice. It non-competitively blocks N-methyl-D-aspartate (NMDA) receptors. As an addition to multimodal perioperative pain management, ketamine has grown in favor in recent years. Ketamine at high dosages causes dissociative anaesthesia with little impact on breathing or airway reflexes. In a range of surgical procedures, low-dose ketamine infusions (\<0.3 mg/kg/hr) have demonstrated effectiveness in lowering pain scores and minimising the need for postoperative opioids. Regarding the reduction of pain and analgesic demand, ketamine has demonstrated conflicting effects. The study objective was to determine the effect of low-dose ketamine infusion on quality and duration of post-operative pain in patients undergoing laparoscopic in a tertiary care hospital.

Interventions

Group A received ketamineat 0.2mg/kg bolus intravenously followed by ketamine infusion at rate of 0.2mg/kg/hr throughout the surgery. W

Control group received normal saline to maintain double blinding

Sponsors

Fazaia Ruth Pfau Medical College
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients of age 18 years or above of either gender * Patients planned of elective laparoscopic choleycyctectomy

Exclusion criteria

* Obese patients * History of alcohol consumption and drug abusers * Uncontrolled hypertension * Uncontrolled diabetes * Patients with chronic pain * Patients allergic to study drugs * Patients with neurological disorders * Patients unable to understand scoring system

Design outcomes

Primary

MeasureTime frameDescription
Post-pain assessmentpain status was monitored post-operatively at 0 hour, 2 hour, 4 hours, 6 hours, 12 hours and at 24 hourspain was assessed using numeric rating scale which is a ten point scoring scale ranging from 0-10 for ranking pain where 0 means no pain and 10 means worst pain.

Secondary

MeasureTime frameDescription
time to rescue analgesiatill 24 hours post-operativelytime to rescue analgesia was defined as time point at which patient was given rescue analgesia for pain score of 5 or above

Countries

Pakistan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026