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The effect of injection speed on remifentanil-induced cough in children

Authors
Kim, DH  | Yoo, JY  | Moon, BK  | Yoon, BH | Kim, JY
Citation
Korean journal of anesthesiology, 67(3). : 171-174, 2014
Journal Title
Korean journal of anesthesiology
ISSN
2005-64192005-7563
Abstract
Background: Remifentanil sometimes elicits cough during induction of anesthesia, as with the use of other fentanyl congeners. We designed this study to investigate the incidence of remifentanil-induced cough (RIC) in children and to evaluate the effect of injection speed on RIC.



Methods: One hundred twenty ASA physical status I-II patients, aged 3-12 yr, undergoing general anesthesia were enrolled in the study. Patients were randomly assigned to one of the three groups. Patients in Group R30 received remifentanil 1.5 μg/kg at a constant rate over 30 s. Patients in Group R45 received remifentanil 1.5 μg/kg over 45 s, and patients in Group R60 received remifentanil 1.5 μg/kg over 60 s, respectively. Episodes of cough were recorded and graded as mild (1-2), moderate (3-4), or severe (5 or more). Mean arterial pressure (MAP), heart rate (HR), and SpO2 were recorded on arrival in the operating room (baseline) and 1 min after remifentanil infusion.



Results: The incidence of RIC was 33.3% in Group R30 (13 of 39 patients), 17.9% in Group R45 (7 of 39 patients), and 5.0% in Group R60 (2 of 40 patients). Patients in Group R60 had a significantly lower incidence of RIC than those in Group R30 (P = 0.001). The MAP, HR, and SpO2 values were not significantly different between groups.



Conclusions: When intravenous remifentanil 1.5 μg/kg was administered in pediatric patients, the incidence of RIC decreased from 33 to 5% by increasing the injection time from 30 to 60 s. Remifentanil should be administered slowly over 60 s in children to suppress cough during anesthesia induction.
Keywords
DOI
10.4097/kjae.2014.67.3.171
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Anesthesiology & Pain Medicine
Ajou Authors
김, 대희  |  김, 종엽  |  문, 봉기  |  유, 지영
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