Ketamine Improves Post-Thoracotomy Analgesia

This study has been completed.
Sponsor:
Information provided by:
Tel-Aviv Sourasky Medical Center
ClinicalTrials.gov Identifier:
NCT00625911
First received: February 8, 2008
Last updated: February 28, 2008
Last verified: February 2008
  Purpose

Thoracotomy for lung tumor or for minimally invasive direct coronary artery bypass (MIDCAB) surgery, may be associated with debilitating pain. Ketamine was shown to enhance opioid antinociception and prevent opioid resistance. We hypothesize that ketamine given with morphine would lower morphine consumption and narcotic related side effects after thoracotomy and provide superior analgesia to morphine given alone.


Condition Intervention
Post Operative Pain
Drug: morphine
Drug: morphine ketamine

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Ketamine Improves Post-Thoracotomy Analgesia

Resource links provided by NLM:


Further study details as provided by Tel-Aviv Sourasky Medical Center:

Primary Outcome Measures:
  • pain score [ Time Frame: 4 hours ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • hemodynamic and respiratory parameters, side effects [ Time Frame: 4 hours ] [ Designated as safety issue: Yes ]

Enrollment: 44
Study Start Date: September 2001
Study Completion Date: March 2002
Primary Completion Date: March 2002 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: morphine only
standard analgesia protocol
Drug: morphine
intravenous patient controlled analgesia, standard protocol
Other Name: morphine
Experimental: morphine ketamine
alterantive regimen for intravenous patient controlled analgesia
Drug: morphine ketamine
low dose ketamine added to 2/3 standard dose of morphine
Other Name: ketalar

Detailed Description:

We planned a prospective, randomomized, double blind study of 2 pain management protocols in consecutive patients undergoing thoracotomy for MIDCAB or lung tumor resection over a 6 month period. After patients emerged from a standardized general anesthetic and when objectively awake and complaining of pain >5/10 on a visual analogue pain scale, they were connected to an intravenous patient controlled analgesia regimen. The regimen was assigned randomly to be either morphine alone (1.5 mg per dose, lockout interval of 7 minutes) or morphine plus ketamine (1.0 mg morphine plus 5 mg ketamine per dose, same lockout interval). Rescue diclofenac was available to both groups. Follow-up lasted 4 hours.

We planned to monitor and compare pain scores, wakefulness scores, hemodynamic and respiratory parameters as well as total morphine consumption and incidence of side effects and complications. All monitoring and recording was done by blinded nurses and intensive care physicians.

  Eligibility

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Consecutive patients scheduled for elective minimally invasive direct coronary artery bypass (MIDCAB) or for lung resection via anterolateral thoracotomy during a 6-month period (Sep 2001-March 2002)

Exclusion Criteria:

Exclusion criteria were:

  • American Society of Anesthesiologists (ASA) physical class ≥3, Emergency operations,
  • Q-wave myocardial infarct occurring during the previous 3 weeks, or poor left ventricular function (e.g., ejection fraction [EF] <30% by echocardiography or angiography).

Other exclusion criteria were:

  • A body mass index >35 kg/m2,
  • Past or current neuropathy or psychological disturbances,
  • The use of centrally active drugs,
  • Chronic liver or renal failure requiring dialysis,
  • A FEV1/FVC <70%,
  • Allergy to ketamine, morphine or non steroidal anti inflammatory drugs (NSAIDs),
  • Clotting abnormalities,
  • A platelets count <70000/mm3,
  • A white blood count <3000>14000/mm3,
  • Uncontrolled diabetes mellitus or fasting blood glucose >250 g/dl,
  • Evidence of sepsis or infection up to one week prior to randomization.
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00625911

Locations
Israel
Tel Aviv Sourasky Medical Center
Tel Aviv, Israel, 64238
Sponsors and Collaborators
Tel-Aviv Sourasky Medical Center
Investigators
Principal Investigator: Avi A Weinbroum, MD Tel-Aviv Sourasky Medical Center
  More Information

No publications provided by Tel-Aviv Sourasky Medical Center

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Avi A Weinbroum, MD, Tel Aviv Sourasky Medical Center
ClinicalTrials.gov Identifier: NCT00625911     History of Changes
Other Study ID Numbers: TASMC-01-AW-114-CTIL
Study First Received: February 8, 2008
Last Updated: February 28, 2008
Health Authority: Israel: Ministry of Health

Keywords provided by Tel-Aviv Sourasky Medical Center:
thoracotomy
minimally invasive direct coronary artery bypass
ketamine
pain

Additional relevant MeSH terms:
Pain, Postoperative
Postoperative Complications
Pathologic Processes
Pain
Signs and Symptoms
Ketamine
Morphine
Analgesics
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Pharmacologic Actions
Central Nervous System Agents
Therapeutic Uses
Anesthetics, Dissociative
Anesthetics, Intravenous
Anesthetics, General
Anesthetics
Central Nervous System Depressants
Excitatory Amino Acid Antagonists
Excitatory Amino Acid Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Analgesics, Opioid
Narcotics

ClinicalTrials.gov processed this record on August 01, 2014