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Use of blood products in cardiac surgery
M C Renton1, D B McClelland, C J Sinclair
1Department of Cardiothoracic Surgery, Royal Infirmary of Edinburgh, UK.
Insights
This study found that elective cardiac surgery patients received an average of 2.33 units of red cell concentrate. Preoperative factors like age and hemoglobin predict transfusion needs, questioning extensive cross-matching.
Area of Science:
- Cardiovascular Surgery
- Transfusion Medicine
- Health Economics
Background:
- Perioperative blood product use in cardiac surgery varies significantly across institutions.
- Limited blood supply necessitates efficient transfusion strategies.
Purpose of the Study:
- To quantify perioperative blood product usage in elective cardiac surgery.
- To compare institutional usage with European centers.
- To identify predictors of transfusion requirements and inform cost-effective practices.
Main Methods:
- Prospective analysis of 74 consecutive elective cardiac operations.
- Data collection on perioperative red cell concentrate transfusion.
- Statistical analysis of preoperative factors influencing transfusion needs.
Main Results:
- Average transfusion: 2.33 units of red cell concentrate per patient.
- 8% of patients received no blood products.
- Age, preoperative hemoglobin, female sex, and red cell mass predicted transfusion requirements.
Conclusions:
- Significant variation exists in blood product transfusion during cardiac surgery.
- Predictive factors can guide transfusion strategies.
- Re-evaluating the necessity of cross-matching more than four units for elective cardiac surgery is warranted given supply constraints.
Abstract:
The quantity of blood products used perioperatively during cardiac surgery is known to vary widely between institutions. This study looked at the amount of blood products used perioperatively in 74 consecutive elective cardiac operations in one institution. The results are compared with those from other European centres and a cost analysis carried out. On average 2.33 +/- 0.74 (95% confidence interval 1.93-2.77) units of red cell concentrate were transfused perioperatively per patient. Six (8%) patients received no blood products. In addition a number of preoperative factors were studied in an attempt to identify predictors of transfusion requirements. Age, preoperative haemoglobin, female sex and red cell mass were all found to have some predictive value. In the face of increasing demands on a limited supply of blood products we question the need for cross matching more than four units of red cell concentrate in elective cardiac surgery.