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Aortic Root Z-Score (Boston Formula): Explanation and Clinical Context The Aortic Root Z-score is a body size–adjusted measurement that quantifies how a patient’s aortic root dimension compares to population-based reference values. The Boston formula, derived from pediatric and young adult cohorts, provides a reliable way to normalize aortic root diameter according to body surface area (BSA). A Z-score represents the
Aristotle Basic Complexity Score (ABCS): Explanation and Clinical Context The Aristotle Basic Complexity Score is a validated tool designed to estimate the procedural complexity for congenital heart surgery in pediatric and adult patients. It combines factors such as the type of surgical procedure, patient age, presence of noncardiac congenital abnormalities, and genetic abnormalities. Each factor is assigned a weigh
Aristotle Comprehensive Complexity (ACC) Score: Explanation and Clinical Context The ACC Score is designed to quantify the overall surgical complexity in congenital heart surgery by combining the Aristotle Basic Complexity (ABC) score with procedure-dependent modifiers and patient-dependent modifiers. The ABC score (range ~1.5 to 15) itself is derived from three domains: potential mortality, potential morbidity, and
AVSD Surgical Mortality Score: Explanation and Clinical Context The AVSD Surgical Mortality Score is a predictive tool to estimate the risk of operative mortality in patients undergoing repair for atrioventricular septal defect (AVSD). It incorporates key preoperative variables, including age, weight, presence of Down syndrome, preoperative ventricular dysfunction, and pulmonary hypertension. The score uses a logisti