Congenital Calculator

Congenital Calculator is a professional cardiac hemodynamic calculator designed for pediatric cardiologists and congenital heart disease specialists. Built on the Fick principle, it calculates pulmonary and systemic blood flow, vascular resistance, and shunt fractions during cardiac catheterization procedures. Key features: • Qp, Qs, QeP and Qp:Qs ratio — all indexed to body surface area • PVR, PVRi, SVR, SVRi — pulmonary and systemic vascular resistance • Mixed venous saturation using SVC and IVC • LaFarge & Miettinen VO₂ estimation with log₁₀ and −20% variant • 8-point saturation step-up warning for shunt detection • Full PDF report generation with patient data and results • O₂ content calculation including dissolved oxygen (pO₂ × 0.003) For use by qualified healthcare professionals only. This app is a clinical decision support tool and does not constitute medical advice, diagnosis, or treatment. All results must be interpreted and verified by a licensed physician. This app has not been evaluated by the FDA or any regulatory body. Always consult current clinical guidelines and institutional protocols. Developed by Subhrajit Lahiri, MD and Omar Abu Anza, MD.