Elevated pulmonary vascular resistance in patients dying from multiple organ failure.

Twenty-one patients with multiple organ failure were studied with hemodynamic monitoring. The five survivors were compared with the 16 nonsurvivors. Significant differences were found in the cardiac index (CI), the left ventricular stroke work index (LVSWI), and the pulmonary vascular resistance index (PVRI). The CI was higher in survivors (4.38 +/- 1.71) than in nonsurvivors (3.43 +/- 1.49). The LVSWI was also higher (43.0 +/- 16.8, 28.7 +/- 12.8) than in nonsurvivors (47.4 +/- 2.91). The PVRI was lower in survivors (168 +/- 122) than in nonsurvivors (474 +/- 291). It is postulated that the elevated PVRI in MOF is related to the adult respiratory distress syndrome.