Retrograde Autologus Priming and its Effects on Intraoperative Transfusion

Abstract

Introduction: Extreme haemodilution going on with cardiopulmonary pass imposes an vital chance element recollect for blood transfusion in cardiac surgical patients. Priming of the cardiopulmonary bypass circuit with sufferers' own blood [retrograde autologous priming (RAP)] is a system used to restrict haemodilution and decrease transfusion requirements. Objective: The objective of our study was to evaluate the effects of Retrograde Autologus Priming on reducing intraoperative blood transfusion in cardiac surgery. Methodology: It was cross sectional study, conducted over a period of six month from august 2021- February 2022 at Peshawar Institute of Cardiology, department of cardiac surgery. We enrolled one hundred and sixty patients, n= (160) through prestructured Performa by the use of non-probability convenient sampling method technique. Results: The mean age of the patients (8.77±8.644), mean HB before surgery (13.443±2.9020), after surgery (10.947±2.0891), haematocrit after surgery (34.98±7.697), priming volume (549.32±229.013), effective priming volume (539.69±257.563), extubation time (3.91±1.255) and ICU stay was (2.20±.875). Post-op performance HB level, hematocrit, priming volume, extubation time and ICU stay shows a significant association at p value <0.05. Conclusion: According to the results of our study, it is concluded that reducing CPB priming volume by the RAP techniques reduces homologous blood transfusion in congenital and valvular defect patients. It also shows that RAP technique shows significant association to the postoperative performance of the patients at p-value <0.05.