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ORIGINAL ARTICLE
Year : 2017  |  Volume : 11  |  Issue : 4  |  Page : 921-929

A comparative study of dexmedetomidine and diltiazem for attenuating pressor responses to laryngoscopy and endotracheal intubation: A double-blind, randomized study


1 Department of Anaesthesiology, Narayan Medical College and Hospital, Sasaram, Bihar, India
2 Department of Anaesthesiology, ELMCH, Lucknow, Uttar Pradesh, India

Correspondence Address:
Raj Bahadur Singh
Department of Anaesthesiology and Critical Care, Narayan Medical College and Hospital, Sasaram, Bihar
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/aer.AER_101_17

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Context: Endotracheal intubation has been suggested to be one of the most invasive stimuli in anesthesia, particularly during induction and after tracheal intubation. The present study aims to evaluate the efficacy of dexmedetomidine as compared to diltiazem on hemodynamic response to laryngoscopy and intubation. Aims: To assess and compare the hemodynamic response of dexmedetomidine as compared to diltiazem in patients undergoing laryngoscopy and intubation and rate and type of side effects of the drugs if any. Settings and Design: This study design was a prospective, randomized, and double-blind trial. Subjects and Methods: The patients were randomly allocated into three groups: Group I (control), Group II (dexmedetomidine), and Group III (diltiazem) of 45 patients each. Group I (n = 45): 0.9% NaCl 10 ml was given to the patients over 10 min before intubation in Group I (control). Group II (n = 45): injection dexmedetomidine (0.5 μg/kg) in 10 ml normal saline was given to the patients over 10 min before intubation. Group III (n = 45): injection diltiazem (0.3 mg/kg) in 10 ml normal saline was given to the patients over 10 min before intubation. Statistical Analysis Used: The data so collected were subjected to statistical analysis using Statistical Package for the Social Sciences version 15.0. Results: Mean percentage increase in systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial pressure (MAP) following intubation was 17.90%, 19.96%, and 19.04%, respectively, in control group, 9.04%, 6.32%, and 7.53%, respectively, in dexmedetomidine group, and 12.30%, 10.32%, and 11.14%, respectively, in diltiazem groups. Statistically, there was a significant difference in postintubation SBP, DBP, and MAP of the three groups (P < 0.001). Dexmedetomidine at a dose of 0.5 μg/kg showed to have a better attenuation of pressor response as compared to diltiazem at a dose of 0.3 μg/kg. Conclusions: Both dexmedetomidine and diltiazem were safe and effective in attenuating the hemodynamic response following laryngoscopy and endotracheal intubation; however, between two trial drugs, dexmedetomidine had a better response.


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