RCIS Exam Review 2023 WITH VERIFIED SOLUTIONS

QP=pulmonary flow/QS=systemic flow= (AO sat - mixed venous sat)/ (Pulmonary vein sat - PA sat) Shunt equation [(AO mean-RA mean)/CO]x80 systemic vascular resistance (SVR) Dynes (125xBSA)/(AO sat- PA sat) x (Hgb x 1.34) x 10 Fick CO output (CO/SEPxHR)/(44.3x √mean gradient) Gorlin Aortic Valve area (CO/DFPxHR)/(37.7x√mean gradient) Gorlin Mitral Valve area CO/√Peak to peak gradient Hakki Formula CO/BSA The cardiac index *adjusts the CO to body size normal 2.5 to 4 L/min/m2 Cardiac Index (CI) 3-4 cm squared normal aortic valve area 1.0 cm² severe aortic stenosis 0.7cm² Critical aortic stenosis 80x(AO mean/CO) Total SVR (AO mean - RA mean)/CO SVR wood units [(PA mean-PCW mean)/CO]x80 Pulmonary Vascular Resistance(PVR) in dynes 80x(PA mean/CO) Total PVR (PA mean-PCW mean)/CO PVR wood units 900-1500 dyne/sec/cm^5 9-20 wood units Normal SVR value