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Blood conservation operations in pediatric cardiac patients: a paradigm shift of blood use
Mohsen Karimi1, Ivan Florentino-Pineda, Ted Weatherred
1Department of Surgery, Division of Pediatric Cardiothoracic Surgery, Georgia Health Science University, Children's Medical Center, Augusta, Georgia, USA. mohsenkarimimd@hotmail.com
Insights
Blood conservation strategies significantly reduce the need for red blood cell transfusions in pediatric cardiac surgery. This approach leads to fewer ventilator days and shorter hospital stays, improving patient outcomes.
Area of Science:
- Cardiology
- Pediatric Surgery
- Transfusion Medicine
Background:
- Red blood cell transfusion is linked to increased complications in pediatric cardiac surgery patients.
- Evaluating blood conservation methods is crucial for improving patient outcomes.
Purpose of the Study:
- To assess the clinical effects and outcomes of blood conservation strategies in pediatric patients undergoing cardiac operations.
Main Methods:
- A retrospective analysis of 168 pediatric patients (biventricular and univentricular operations) from 2006-2010.
- Patients were divided into blood conservation and no blood conservation groups.
- Statistical analysis compared outcomes between the groups, controlling for patient demographics and preoperative/postoperative hemoglobin levels.
Main Results:
- The blood conservation group showed longer cardiopulmonary bypass and cross-clamp times but a reduced need for intraoperative and postoperative transfusions.
- Key benefits included lower inotropic scores, fewer ventilator days, and shorter hospital stays.
- Logistic regression confirmed a correlation between intraoperative transfusion and increased inotropic score, longer ventilation, and hospitalization.
Conclusions:
- Blood conservation in pediatric cardiac surgery is associated with improved clinical outcomes, including reduced ventilator days and hospital stays.
- These benefits, alongside transfusion risks and costs, support the use of blood conservation.
- Further research may explore optimized protocols for specific patient populations.
Background:
Red blood cell transfusion is associated with high morbidity in pediatric patients undergoing cardiac operations. The aim of this study was to evaluate the clinical effects and outcomes of blood conservation for our pediatric patients undergoing cardiac operations.
Methods:
We retrospectively analyzed a collected database of 168 pediatric patients who underwent biventricular (BV) and univentricular (UV) cardiac operations from 2006 to 2010. Patients were grouped into no blood conservation (n = 86 [BV = 74, UV = 12]) and blood conservation (n = 82 [BV = 68, UV = 14]) cohorts. There were no statistical differences in age, sex, weight, and preoperative or postoperative hemoglobin levels in the BV groups.
Results:
Even though the blood conservation group had longer cardiopulmonary bypass (CPB) (p < 0.0001) and cross-clamp times (p < 0.002) with lower hemoglobin levels (p < 0.0001), there was a decreased need for intraoperative (p < 0.0001) and postoperative blood transfusions (p < 0.018), lower inotropic scores (p < 0.0001), a decrease in ventilator days (p < 0.0009), and a shorter length of hospital stay (p < 0.0008). In the UV blood conservation group, there were no statistical differences in age, sex, weight, CPB and cross-clamp times, preoperative and postoperative hemoglobin levels, and red blood cell transfusions despite lower intraoperative hemoglobin levels (p < 0.0009) and blood transfusion (p < 0.01) requirements. There were significantly lower inotropic scores (p < 0.001) and a trend toward a shorter duration of time on the ventilator (p < 0.07) in the blood conservation group. Logistic regression analysis demonstrated a significant correlation between intraoperative blood transfusion and increased inotropic score, longer duration on the ventilator, and increased length of hospitalization.
Conclusions:
Blood conservation in pediatric cardiac operations is associated with fewer ventilator days, lower inotropic scores, and shorter lengths of stay. These findings, in addition to attendant risks and side effects of blood transfusion and the rising cost of safer blood products, justify blood conservation in pediatric cardiac operations.
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