Year : 2019  |  Volume : 22  |  Issue : 1  |  Page : 73--78

Evaluation of risk scores in predicting perioperative blood transfusions in adult cardiac surgery


NR Madhu Krishna, PS Nagaraja, Naveen G Singh, SN Nanjappa, Karthik Narendra Kumar, V Prabhakar, N Manjunatha 
 Department of Cardiac Anaesthesiology, Sri Jayadeva Institute of Cardiovascular Sciences and Research, Bengaluru, Karnataka, India

Correspondence Address:
Naveen G Singh
Department of Cardiac Anaesthesia, Sri Jayadeva Institute of Cardiovascular Sciences and Research, Bengaluru - 560 069, Karnataka
India

Objective: Allogeneic blood product transfusions are associated with an increased morbidity and mortality risk in cardiac surgery. At present, a few transfusion risk scores have been proposed for cardiac surgery patients. The present study is aimed to develop a new score and to compare with preexisting scores – Transfusion Risk and Clinical Knowledge (TRACK) and Transfusion Risk Understanding Scoring Tool (TRUST) score. Methodology: A total of 1014 adult patients undergoing cardiac surgery were enrolled in the retrospective study. Independent predictors of allogeneic blood transfusions were selected from TRACK and TRUST scores. A predictive score was developed from six variables using logistic regression analysis, and new score was compared to the other existing scores – TRACK and TRUST. Results: The new score had following predictors: age >58 years, weight <63 kg for males and <49 kg for females, gender (female), complex surgery, hemoglobin <13.5 g/dl, and creatinine >1.36 mg/dl. Validation of new score demonstrated an acceptable predictive power (area under the curve [AUC] 0.749) and a good calibration at the Hosmer–Lemeshow test. New score was comparable with TRACK score with P = 0.578 (AUC of TRACK 0.756 and AUC of new score 0.749). There was a significant difference between new score and TRUST score, P = 0.01 (AUC of TRUST 0.72 and AUC of new score 0.749). Conclusion: New score is a simple risk model based on six predictors having a similar accuracy and calibration in predicting the transfusion rate in cardiac surgery as compared to TRACK score.


How to cite this article:
Madhu Krishna N R, Nagaraja P S, Singh NG, Nanjappa S N, Kumar KN, Prabhakar V, Manjunatha N. Evaluation of risk scores in predicting perioperative blood transfusions in adult cardiac surgery.Ann Card Anaesth 2019;22:73-78


How to cite this URL:
Madhu Krishna N R, Nagaraja P S, Singh NG, Nanjappa S N, Kumar KN, Prabhakar V, Manjunatha N. Evaluation of risk scores in predicting perioperative blood transfusions in adult cardiac surgery. Ann Card Anaesth [serial online] 2019 [cited 2019 Dec 15 ];22:73-78
Available from: http://www.annals.in/article.asp?issn=0971-9784;year=2019;volume=22;issue=1;spage=73;epage=78;aulast=Madhu;type=0