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The dose-related effects of bolus esmolol on heart rate and blood pressure following laryngoscopy and intubation.

Author(s): Bensky KP, Donahue-Spencer L, Hertz GE, Anderson MT, James R

Affiliation(s): Presbyterian Hospital, Charlotte, NC, USA.

Publication date & source: 2000-10, AANA J., 68(5):437-42.

Publication type: Clinical Trial; Randomized Controlled Trial

Many researchers have studied esmolol and its effects on heart rate and blood pressure. All studied relatively large doses of esmolol. Therefore, the purpose of the present study was to determine whether small doses of esmolol would blunt the transient increases in blood pressure and heart rate caused by laryngoscopy. This double-blind, prospective, randomized study included 61 subjects. The subjects were randomized to 1 of 3 groups: group 1 received esmolol, 0.2 mg/kg; group 2 received esmolol, 0.4 mg/kg; and group 3 received saline placebo. Groups 1 and 2 had smaller increases in heart rate than group 3. We also found that the 0.4 mg/kg dose significantly blunted the increase in mean arterial pressure seen in group 3. This study shows that small doses of esmolol may block the increases in heart rate and blood pressure resulting from laryngoscopy and intubation.

Page last updated: 2006-01-31

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