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In some individual’s suffering from hypertension, coronary artery disease, cerebrovascular disease, myocardial infarction and thyrotoxicosis, these hemodynamic stress responses can turn into life-threatening conditions like left ventricular failure, myocardial ischemia, cerebral hemorrhage, and ruptured cerebral aneurysm. Different drugs like lidocaine, vasodilator agents inhibiting sympathoadrenal response, α-and β-adrenergic blockers, and opioids can be administered prior to tracheal intubation to prevent hemodynamic responses. But higher dose of lignocaine may lead to hypotension, bradycardia, and hypoxia in patients. Due to various effect of these drugs on hemodynamic changes in patients this study was carried out to evaluate the effects of IV esmolol, lignocaine, and labetalol for attenuation of hemodynamic response to laryngoscopy and intubation. MATERIAL AND METHODS: A total of 90 consecutive patients were included in the study and were grouped in to, lignocaine group, labetalol and esmolol group containing 30 patients each. Age group 21–65 years of either sex or American Society of Anesthesiologists (ASA) Grade I or II scheduled for various general surgical procedures under endotracheal anesthesia were included in this study. Patients excluded were pregnant and lactating women, morbid obesity, and hypertension. RESULTS: Mean Age in Group 1, group2 and group 3 was 40.38 ± 7.25, 43.8 ± 9.24 and 42.56 ± 8.71 respectively while weight was 62.41 ± 7.32, 63.63 ± 8.11 and 60.74 ± 6.92 respectively. There were 17 male and 13 female in group 1, 19 male and 11 female in group 2 and 16 male and 14 female in group 3. Attenuation of blood pressure was more in labetalol group. Reduction of heart rate in labetalol group was significant. It is seen that Labetalol was more effective at attenuation of diastolic blood pressure among all drugs. Mean arterial pressure was not much reduced lignocaine and esmolol group as compared to labetalol. CONCLUSION: Haemodynamic alterations are usually observed during laryngoscopy and endotracheal intubation. In our study it was found that as labetalol is a safe and effective drug, for attenuation of sympathomimetic response.

COMPARISON OF ESMOLOL, LABETALOL AND LIGNOCAINE FOR ATTENUATION OF SYMPATHOMIMETIC RESPONSES TO LARYNGOSCOPY AND ENDOTRACHEAL INTUBATION