Intraoperative variables associated with extubation time in patients undergoing open heart surgery
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Abstract
Decreasing mechanical ventilation and early extubation in patients has many clinical benefits. Hence, an awareness of some variables, associated with extubation time can help nurses to plan convenient care aimed at making a safe and early extubation. The purpose of this study was to investigate whether any intraoperative variables had a significant effect on extubation time following open heart surgery. The research was conducted on 60 open heart surgery patients who met inclusion criteria between April 2014 and November 2014 in a cardiac and vasculer surgery clinic of university hospital in Istanbul, Turkey. The data were collected by using a “Questionnaire Form†which includes some intraoperative variables (type of surgery, the number of grafts, the duration of time of the cardiopulmonary bypass, aortic crossclamping, total operation time, and the extubation time). The data was analyzed by descriptive and analytical methods. Type of the surgery procedure was 40 (66%) patients were CABG, 10 (16,6%) were valvuler surgery, 6 (10%) were ASD/VSD primer repair and 4 (3,3%) were Bentall procedure. Extubation was achieved for 60 patients in a mean time of 8.33±1.99 h. 18,3% (11) of the patients were extubated in ≤6 h and 81,7% (49) of them were extubated in >6 h after surgery, classifying them into the early and delayed extubation groups, respectively. On statistical analysis, the duration of the cardiopulmonary bypass (CPB) and aortic cross-clamping were found to have a significant effect on the extubation time.This study revealed that the duration of the cardiopulmonary bypass and aortic cross-clamping might play a role in the extubation time. Therefore, it is recommended that nurses consider this in their assessment of extubation as a shorter cardiopulmonary bypass time and aortic cross-clamping time might lead to earlier extubation.
Keywords: Open heart surgery; extubation; intraoperative variables.
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