Volume 6, Issue 1, June 2018, Page: 26-32
Evaluation of Low Tidal Volume During General Anesthesia in Prone Position on Respiratory Functions
Mohamed Shahat Badawy, Department of chest diseases, Qena faculty of medicine, South Valley University, Qena, Egypt
Marwa Nasr Eldin Hamed, Department of Anesthesiology, Intensive care and Pain Therapy, Qena Faculty of Medicine, South Valley University, Sohag, Egypt
Ahmed El-Saied Abdel Rahman, Department of Anesthesiology, Intensive care and Pain Therapy, Sohag Faculty of Medicine, Sohag University, Qena, Egypt
Salman Osama Hamdy, Department of Anesthesiology, Intensive care and Pain Therapy, Qena Faculty of Medicine, South Valley University, Sohag, Egypt
Ahmed Yosef Abdel Zaher, Department of Anesthesiology, Intensive care and Pain Therapy, Qena Faculty of Medicine, South Valley University, Sohag, Egypt
Received: Apr. 20, 2018;       Accepted: May 8, 2018;       Published: Jul. 1, 2018
DOI: 10.11648/j.ja.20180601.15      View  635      Downloads  41
Abstract
Background: Surgery is accompanied by postoperative pulmonary functions impairment especially in the prone position. There is evidence suggested that using low tidal volume during general anesthesia may decrease post-operative lung injury. This study aimed to evaluate the effect of low tidal volume on lung functions during mechanical ventilation for general anesthesia while patients lying in the prone position. A prospective clinical trial was performed on 88 patients ASA I&II scheduled for elective surgery while patients lying prone and were randomly assigned to either protective ventilation group A with tidal volume; 5-7 ml/kg, 10 cm H2O positive end expiratory pressure (PEEP) with recruitment maneuver (RM) or conventional group B with Tidal Volume; 10-12 ml/kg, without both PEEP and RM. The primary efficacy variables were assessed by pulmonary function tests, performed before surgery, and 6, 12 and 24 hours postoperatively. Improvement of lung functions were found in the first post-operative 6 and 12 hours in the low tidal volume group and significant difference was found in all parameters P value 0.001 except PaO2/FIO2 ratio P value 0.4. After 24 hours there were significant difference in the FVC, predicted FEV1 and FVC and FEV1/FVC ratio being higher in the low tidal volume group with P value 0.001. Patients in both groups showed similar rates of postoperative chest complications without significant difference. Lung protective ventilation improved lung functions in the first post-operative 24 hours. There was no significant postoperative chest complications difference between the two groups.
Keywords
Respiratory Functions, Prone Position, Tidal Volume
To cite this article
Mohamed Shahat Badawy, Marwa Nasr Eldin Hamed, Ahmed El-Saied Abdel Rahman, Salman Osama Hamdy, Ahmed Yosef Abdel Zaher, Evaluation of Low Tidal Volume During General Anesthesia in Prone Position on Respiratory Functions, Journal of Anesthesiology. Vol. 6, No. 1, 2018, pp. 26-32. doi: 10.11648/j.ja.20180601.15
Copyright
Copyright © 2018 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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