Effect of isoflurane versus propofol-remifentanil anesthesia on neuromuscular blockade and hemodynamic responses by cisatracurium bolus injection.

Korean J Anesthesiol

Department of Anesthesiology and Pain Medicine, Gyeongju Hospital, College of Medicine, Dongguk University, Gyeongju, Korea.

Published: October 2011

Background: Inhalational anesthetics potentiate nondepolarizing muscle relaxants. Cisatracurium is a recently introduced neuromuscular blocker in Korea. We studied the effect of inhalational anesthesia and total intravenous anesthesia (TIVA) on neuromuscular blockades and hemodynamic responses by cisatracurium bolus injection.

Methods: Forty patients undergoing elective surgery were randomly divided into isoflurane and propofol-remifentanil groups. A bolus dose of cisatracurium of 0.15 mg/kg (3 × ED(95)) was administered after induction and the onset time and clinical duration of action were recorded. The nueromuscular blockade was monitored using train-of-four (TOF) stimulation. Hemodynamic parameters were also recorded.

Results: Onset time was 194.0 ± 39.1 sec in the isoflurane group and 226.5 ± 62.2 sec in the propofol-remifentanil group. Clinical duration of action was 49.2 ± 9.0 min in the isoflurane group and 43.0 ± 9.2 min in the propofol-remifentanil group. Systolic blood pressure (SBP) and diastolic blood pressure (DBP) immediately before intubation decreased in the propofol-remifentanil group. Heart rate (HR), SBP and DBP 1 and 3 min after tracheal intubation increased in the isoflurane group.

Conclusions: Onset time was similar between isoflurane and propofol-remifentanil anesthesia. Clinical duration of action was significantly longer in isoflurane anesthesia. SBP and DBP immediately before intubation and HR, SBP and DBP 1 and 3 min after tracheal intubation were significantly different between the two groups.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3219775PMC
http://dx.doi.org/10.4097/kjae.2011.61.4.297DOI Listing

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