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Effect of low dose ketamine to prevent remifentanil-induced cough: a randomized, double-blind, placebo controlled trial

Kim, JY; Park, SY; Jung, WS; Kwak, HJ
Korean journal of anesthesiology, 56(6):624-627, 2009
Journal Title
Korean journal of anesthesiology
Background: A reflex cough is often observed after an intravenous (IV) bolus of remifentanil. Since ketamine was reported to be effective in modulating the cough reflex, this prospective, randomized, double-blind, placebo-controlled study was designed to evaluate the efficacy of pretreatment with ketamine on remifentanil-induced cough.

Methods: 320 patients undergoing general anesthesia for elective surgery were randomly allocated into two groups to receive either IV ketamine 0.1 mg/kg (ketamine group, n = 156) or 0.9% saline (saline group, n = 154) 1 min before administration of remifentanil at a target effect-site concentration of 5 ng/ml. Severity of cough was graded (mild, 1?2; moderate, 3?4; and severe, 5 or >5).

Results: The overall incidence of cough was significantly higher in the saline group (43/154 patients; 0.28, 95% CI 0.21, 0.36) than that in the ketamine group (18/156 patients; 0.12, 95% CI 0.07, 0.18) (P < 0.001). However, there was no significant difference in the severity and the onset time of cough between the groups.

Conslusions: IV ketamine 0.1 mg/kg one minute before remifentanil was effective in suppressing remifentanil-induced cough without affecting the severity and onset time.
KetamineOpioid-induced coughRemifentanil
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Anesthesiology & Pain Medicine
AJOU Authors
김, 종엽박, 성용
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