Rt heart cath to diagnose the etiology of shock

Use of Right Heart Catheterization to Diagnose the Etiology of Shock

Diagnosis PAOP T  SVR Miscellaneous Comments Cardiogenic shock            Cardiogenic shock due to myocardial dysfunction Usually extensive infarction (>40% of left ventricle), severe cardiomyopathy, or myocarditis    Cardiogenic shock due to mechanical defects               Acute ventricular septal defect Oxygen "step-up" at RV level       Acute mitral regurgitation Forward T  V waves in Paop tracing               RV infarction Normal or  Elevated RA and RV filling pressures with low or normal Paop Extracardiac obstructive forms of shock            Pericardial tamponade  Or  RA mean, RV end-distolic pulmonary capillary wedge mean pressures are elevated and within 5 mm Hg of one another    Massive pulmonary embolism Normal or  Usual finding is elevated right-side pressures Hypovolemic shock   Distributive forms of shock            Septic shock  Or normal  Or normal, rarely       Anaphylactic shock  Or normal  Or normal