• Sandeep Sharma, Om Prakash Suthar, M L Tak, Abhilasha Thanvi, Naveen Paliwal, and Rakesh Karnawat.
• Department of Anaesthesia and Critical Care Medicine, Dr. S. N. Medical College, Jodhpur, Rajasthan, India.
• Anesth Essays Res. 2018 Jan 1; 12 (1): 262-266.

ContextLaryngoscopy and endotracheal intubation lead to strong sympathetic response which may precipitate arrhythmias, myocardial ischemia and cerebrovascular accidents in patients with preexisting cardiovascular disease.AimsThis study was aimed to compare the effect of dexmedetomidine and esmolol on hemodynamic response to laryngoscopy and endotracheal intubation in patients undergoing elective surgery under general anesthesia.Settings And DesignThis was a prospective, randomized controlled double-blinded study.Materials And MethodsA total of ninety patients were selected and randomized into three groups of thirty patients each: Group C received infusion of 20 mL 0.9% normal saline (NS) over 10 min, Group D received infusion of dexmedetomidine 1 μg/kg diluted in 20 mL NS over 10 min, and Group E received infusion of esmolol 1.5 mg/kg diluted in 20 mL NS over 10 min. Three minutes after the completion of infusion, patients were induced with general anesthesia. Baseline parameters such as heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial blood pressure (MAP), and rate pressure product (RPP) were recorded before administration of study drugs and at 1, 3, 5, 7, and 10 min after intubation.Statistical Analysis UsedOne-way ANOVA was used for comparison among the groups and unpaired t-test was used for comparison within the groups along with Tukey's test for post test analysis.ResultsMean HR, SBP, DBP, MAP, and RPP values remained significantly lower in Group D than that of Group C and Group E at all time intervals up to 10 min after intubation.ConclusionsBoth dexmedetomidine and esmolol suppressed the hemodynamic response to intubation when compared to control group, but dexmedetomidine is more effective than esmolol in maintaining hemodynamic stability following laryngoscopy and intubation.

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