Volume 3, Issue 2, June 2019, Page: 34-39
A Comparative Clinical Study of Oral Clonidine Versus Intravenous Clonidine on Haemodynamic Changes due to Laryngoscopy and Endotracheal Intubation
Sanjeev Singh, Department of Anaesthesiology and Intensive Care, School of Medical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana; Department of Anaesthesia and Intensive Care, Satyabhama Academy of Medical Sciences & Research Institute, Lucknow, India
Received: Dec. 18, 2019;       Accepted: Dec. 30, 2019;       Published: Jan. 8, 2020
DOI: 10.11648/j.pst.20190302.11      View  396      Downloads  123
Abstract
Laryngoscopy with or without endotracheal intubation amounts to a highly noxious stimulus to the haemodynamics of a patient and various efforts have been made to attenuate this response. This study was conducted to compare the effects of oral Clonidine and IV Clonidine premedication on haemodynamic response to laryngoscopy and endotracheal intubation. This is a prospective, randomized controlled, double blind study conducted after obtaining institutional ethical approval. One hundred normotensive patients between 18-45yrs of age (ASA Grade I & II) scheduled for elective surgery were sub-divided into two groups with 50 patients in each group. Oral or intravenous clonidine 3μg/kg was given at 30 and 15 minutes before induction. Patients were Induced with inj Propofol 2.5 mg/kg, fentanyl 1μg kg-1 and inj Vecuronium 0.12mg/kg and intubated. Heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), rate pressure product (RPP) were recorded at Basal (before administration of study drug), pre laryngoscopy (after administration of study drug but before induction of anaesthesia) and post laryngoscopy at 1, 3, 5, 10 and 15 minutes respectively. HR, SBP, DBP, and RPP decreased by -3.6%, -9.5%, - 11.5%, -12.7% in the oral clonidine group and by -3.4%, -16.3%, -11.9%, -19.1% in IV clonidine group from basal to pre laryngoscopy values (p<0.05). An increase was seen in both the group at 1, 3 and 5 minutes after intubation in both the groups. But the response was significantly less in the IV Clonidine group as compared to the Oral group. All the variables returned towards baseline values by 10-15 minutes post-laryngoscopy in either group. Oral Clonidine 3μ/kg was less effective than IV Clonidine 3μg/kg in blunting haemodynamic stress response. IV Clonidine premedication effectively blunted stress response to endotracheal intubation in ASA physical status I and II patients without causing adverse reactions.
Keywords
Attenuation, Clonidine, Haemodynamic, Intubation, Laryngoscopy
To cite this article
Sanjeev Singh, A Comparative Clinical Study of Oral Clonidine Versus Intravenous Clonidine on Haemodynamic Changes due to Laryngoscopy and Endotracheal Intubation, Pharmaceutical Science and Technology. Vol. 3, No. 2, 2019, pp. 34-39. doi: 10.11648/j.pst.20190302.11
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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