thus , in this canine model of acute pulmonary embolism : 1 ) va/q distributions were moderately impaired accounting for only slight hypoxemia , and 2 ) pulmonary hypertension was partially reversible by hydralazine and by nitroprusside without associated non-flow-dependent change in va/q distributions and arterial oxygenation .
C0020542
pulmonary hypertension
C0020223
hydralazine