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Korean J Anesthesiol > Volume 31(1); 1996 > Article
Korean Journal of Anesthesiology 1996;31(1):43-48.
DOI: https://doi.org/10.4097/kjae.1996.31.1.43   
Cardiovascular Response of Esmolol and Diltiazem to Endotracheal Extubation.
Dae Heui Nam, Byeong Sun Park, Hoon Soo Kang
Departmemt of Anesthesiology, Dong Kang Hospital, Ulsan, Korea.
Abstract
BACKGROUND
Tracheal extubation causes hypertension and tachycardia. In susceptable patients, even this short period of hypertension and tachycardia can result in myocardial ischemia. The purpose of this study was to evaluate the effect of esmolol and diltiazem in attenuating cardiovascular responses to tracheal extubation.
METHODS
Changes in heart rate, systolic and diastolic blood pressure were measured during extubation and emergence from anesthesia in 60 ASA physical status I patients to assess the effect of esmolol and diltiazem. The patients were randomly assigned to one of three groups (n=20 for each group) : saline 5 ml (as a control), 0.2 mg/kg diltiazem and 1.5 mg/kg esmolol. These medications were given 2 min before tracheal extubation.
RESULTS
Both groups of diltiazem and esmolol were greater attenuating effect on changes of heart rate, systolic and diastolic blood pressure than control group. The inhibitory effect on changes of heart rate was greater with esmolol than diltiazem, but the attenuating effect on changes of systolic blood pressure was greater with diltiazem than esmolol.
CONCLUSIONS
We concluded that a bolus dose of intravenous diltiazem 0.2 mg/kg or esmolol 1.5 mg/kg given at 2 min before extubation was of value in attenuating the cardiovascular changes occuring in association with tracheal extubation and emergence from anesthesia. Esmolol is more effective than diltiazem in attenuating the heart rate changes. Diltiazem is more effective than esmolol in attenuating the systolic blood pressures changes.
Key Words: Anesthetic techniques tracheal extubation; Phamacology diltiazem; esmolol


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