Korean J Anesthesiol.  2011 Oct;61(4):308-314. 10.4097/kjae.2011.61.4.308.

Effect of ketamine pretreatment for anaesthesia in patients undergoing percutaneous transluminal balloon angioplasty with continuous remifentanil infusion

Affiliations
  • 1Department of Anaesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea. ylkwak@yuhs.ac
  • 2Anaesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.
  • 3Severance Biomedical Science Institute, Seoul, Korea.

Abstract

BACKGROUND
An appropriate level of sedation and pharmacological assist are essential during percutaneous transluminal balloon angioplasty (PTA). Ketamine provides good analgesia while preserving airway patency, ventilation, and cardiovascular stability with an opioid sparing effect suggesting that it would be ideal in combination with remifentanil and midazolam in spontaneously breathing patients. We evaluated the effect of a small dose of ketamine added to midazolam and remifentanil on analgesia/sedation for PTA procedures.
METHODS
Sixty-four patients receiving PTA were enrolled. The Control group received midazolam 1.0 mg i.v. and continuous infusion of remifentanil 0.05 microg/kg/min. The Ketamine group received, in addition, an intravenous bolus of 0.5 mg/kg ketamine. Patients' haemodynamic data were monitored before remifentanil infusion, 5 min after remifentanil infusion, at 1, 3, 5, 30 min after incision, and at admission to the recovery room. Verbal numerical rating scales (VNRS) and sedation [OAA/S (Observer's Assessment of Alertness/Sedation)] scores were also recorded.
RESULTS
The VNRS values at 1, 3, and 5 min after incision and OAA/S scores at 5 min after remifentanil infusion, and 1, 3, and 5 min after incision were lower in the Ketamine group than in the Control group. In the Control group, the VNRS value at 1 min after incision significantly increased and OAA/S values at 3, 5, and 30 min after incision significantly decreased compared to baseline values, while there were no significant changes in the ketamine group.
CONCLUSIONS
A small dose of ketamine as an adjunct sedative to the combination of midazolam and remifentanil produced a better quality of sedation and analgesia than without ketamine and provided stable respiration without cardiopulmonary deterioration.

Keyword

Ketamine; Pain scale; Remifentanil; Sedation

MeSH Terms

Analgesia
Angioplasty, Balloon
Humans
Ketamine
Midazolam
Piperidines
Recovery Room
Respiration
Ventilation
Weights and Measures
Ketamine
Midazolam
Piperidines
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