Cardiopulmonary manifestations of hantavirus pulmonary syndrome

Critical Care Medicine
G W HallinH Levy

Abstract

To describe the clinical characteristics of a group of patients infected with the newly recognized hantavirus in the Southwestern United States. Case series. Tertiary referral center. All patients with confirmed hantavirus infection admitted to the University of New Mexico Hospital between May 1, 1993 and January 1, 1994. Records of patients with hantavirus infection were reviewed to collect all pertinent clinical data. Pulmonary disease in these patients was characterized by hypoxemia covering a wide range of severity. The cause of hypoxemia was an increased permeability (noncardiac) pulmonary edema which could be differentiated from hydrostatic (cardiac) pulmonary edema by its association with low pulmonary artery occlusion pressures and increased protein content of edema fluid. Hemodynamic measurements in severe cases showed a shock state characterized by a low cardiac index (range 1.6 to 3.0 L/min/min2), a low stroke volume index (range 10.5 to 29 mL/m2), and high systemic vascular resistance index (range 1,653 to 2,997 dyne.sec/cm5.m2). Progression to death was associated with worsening cardiac dysfunction unresponsive to treatment and causing oxygen debt and lactic acidosis. The two major life-threatening pathophysiologic...Continue Reading

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