Table 5. Hemodynamic formulas to assess right ventricle and predict right ventricular failure post LVAD insertion.

Method of assessment	Formula	Values associated with increased incidence of post LVAD RV failure
Filling pressures	RAP/PCWP	>0.63 (98)
PA pulsatility index	(sPA-dPA)/RAP	<1.85 (99)
RV stroke work	(mPA-RAP) × SV ×0.0136	<15 (100)
RV stroke work index	(mPA-RAP)/SV index	<0.3–0.6 (98,99)

RAP, right atrial pressure; PCWP, pulmonary capillary wedge pressure; RVF, right ventricular failure; LVAD, left ventricular assist device; PA, pulmonary artery; sPA, pulmonary artery systolic pressure; dPA, pulmonary artery diastolic pressure; mPA, pulmonary artery mean pressure; SV, stroke volume.