Studying the Effects of the Length of Using Cardiopulmonary Pump on Early Extubation Following the Operation among Patients Candidated for Coronary Artery Bypass Graft

Abstract

Prolonged mechanical ventilation is a really important complication among patients candidated for coronary artery bypass grafting. It also accounts for higher death toll, longer periods of hospitalization, and reduced life quality of patients. As a result, early extubation is a common desire among these patients. One of the factors affecting this process is the length of utilizing pump. The present research seeks to study the effect of the length of utilizing pump on the length of extubation among patients undergoing coronary artery bypass grafting. This is a cross sectional -analytical research conducted on 360 patients candidated for CABG selected based upon the inclusion criteria. The length of pump utilization and Aorta cross clamp, and the length of extubation since entering ICU (after they were moved to ICU) were recorded in research questionnaires and the resulting information was finally analyzed. As it turned out, a longer period of hospitalization would result in a significantly longer time of extubation for patients. The average extubation time for those patients who were under pumping for more than 120 minutes was longer than 2 hours (P = 0.01). A longer period of pumping was significantly associated with higher mortality rates and a linear correlation is observed between these two variables. The mean length of pumping among those patients who had passed away was 169.8 ± 7.8 minutes (P = 0.0001). A study of these patients illustrated the fact that as the length of using pump grows longer, the possibility of atrial fibrillation also goes up (P = 0.01). Longer use of pump results in longer extubation time and causes late extubation.