Study of rate of cooling and warming at different sites of the body following extracorporeal cooling and rewarming in patients during open heart surgery

Abstract

Background: Temperature management during cardiac surgery has been one of the chief concerns. Numerous strategies are currently invoked to manage the requirements of cooling, temperature maintenance, and rewarming patients during cardiac surgical procedures.Aim: To study the rate of cooling and warming at different sites of the body following extracorporeal cooling and rewarming in patients during open heart surgery.Materials and Method: The present study was conducted on fifty patients undergoing elective open heart surgery at Tertiary Care Hospital in Jaipur city. Fifty patients belonging to both sex and different age groups were studied. The patients were divided into two groups. Group I consisting of patients in which Nitroglycerin was not used as vasodilator during rewarming on Cardiopulmonary bypass and Group II where Nitroglycerin was used.Results: During bypass stage, the Skin, Rectal and Nasopharyngeal temperatures fell because of hypothermia. In both groups the rectal temperature fell slowly. The fall in skin temperature was maximum whereas nasopharyngeal temperature showed an intermediate fall.Conclusion: The temperature of heart determines the degree of protection afforded to it during coronary occlusion by aortic cross clamping. Key Word:extracorporeal cooling, rewarming. *Address for Correspondence: Dr.Jaswant Goyal, Assistant Professor, Department of Pharmacology, Jaipur National University Institute for Medical Sciences and Research Centre, Jagatpura Jaipur, INDIA. Email:health@jnuhealthcare.com Received Date: 09/05/2019 Revised Date: 21/06/2019 Accepted Date: 01/08/2019 DOI: https://doi.org/10.26611/101511127