Preoperative data collection, and postoperative outcome evaluation
blood loss
BLOOD LOSS, CONCOMITANT DISEASE
Demographic data of patients included age, sex, body mass index (BMI), cardiac ASA classification, and concomitant diseases. Preoperative laboratory findings included hemoglobin value (Hb), hematocrit value (Hct), platelet count (PLT), international normalized ratio (INR), and prothrombin time (PT).The primary postoperative evaluation included the mean VAS score in the surgical area and the tramadol consumption from the day after surgery to the third day after surgery.The second postoperative evaluation included the level of inflammatory indicators such as CRP, IL-6 and ESR, calculation of hemoglobin drop, total blood loss and postoperative blood transfusion rate for the first day of postoperative routine blood results. The hemoglobin drop was calculated by referring to the daily postoperative routine blood test results, and the total blood loss was calculated by referring to the calculation methods of Gross et al. [