Abstract
Introduction: Low hematocrit level is a hematological problem that is frequently encountered in the preoperative evaluation of patients undergoing coronary artery bypass grafting (CABG) surgery. The aim of this study was to investigate the effect of preoperative hematocrit level on the first 30-day outcomes in patients undergoing CABG surgery.Methods: Ninety-four patients undergoing isolated CABG were included in the study. The patients were divided into two groups as patients with preoperative low hematocrit levels (<36%) in Group 1 and patients with preoperative normal hematocrit levels (≥36%) in Group 2.Results: Forty-six patients in Group 1 (mean age: 63.6 ± 7.9 years) and 48 patients in Group 2 (mean age: 56.5 ± 8.8 years) were enrolled. European System for Cardiac Operative Risk Evaluation (EuroSCORE) scoring was statistically significantly higher in Group 1 (p = 0.011). In the postoperative period, the amount of drainage, transfusion of blood, and blood products were significantly higher in Group 1 (p < 0.001). The mortality rate of Group 1 was statistically higher in the first 30 days postoperatively (p = 0.020).Conclusion: Low preoperative hematocrit levels are associated with increased mortality after CABG surgery. We suggest that patients’ preoperative hematocrit levels must be added to the risk scoring systems as an assessment parameter.
Highlights
Low hematocrit level is a hematological problem that is frequently encountered in the preoperative evaluation of patients undergoing coronary artery bypass grafting (CABG) surgery
We found that the mortality rate, postoperative drainage, and blood and blood product transfusion were statistically significantly higher in the group with low hematocrit levels
Despite all the advances seen in heart surgery, morbidity and mortality seen after CABG surgery is still an important problem [6]
Summary
Low hematocrit level is a hematological problem that is frequently encountered in the preoperative evaluation of patients undergoing coronary artery bypass grafting (CABG) surgery. The aim of this study was to investigate the effect of preoperative hematocrit level on the first 30-day outcomes in patients undergoing CABG surgery. For the last 10 years, many studies have been done to determine the surgical risk factors of CAD and preoperative risk scoring has become extremely important in patients undergoing CABG surgery. The success of surgery depends to some extent on the elimination or improvement of these factors, or on taking measures against it [3,4] Some of these factors include advanced age, poor ventricular function, presence of diffuse coronary lesions, presence of poor respiratory or renal function, previous cardiac surgery, complicated surgery, and emergent surgical intervention. The aim of this study was to investigate whether the hematocrit level, which is routinely assessed in the preoperative period, is a parameter affecting clinical outcomes in the early postoperative period (first 30 days)
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