The goal of this retrospective cohort study Is to Primarily be platelet transfusion frequency and postoperative bleeding risk, analysis using descriptive and inferential statistics in all eligible patients admitted to the cardiac intensive care unit (CICU) for open-heart surgery were included of both gender, age group of 30-80 years. The main questions it aims to answer are:
* How was the frequency of platelet transfusion during the index admission evaluated?
* How was post-operative bleeding risk measured?
* What does 24-hour chest drain output indicate in this context?
* How was packed cell volume (PCV) transfusion used as an outcome measure?