TABLE 1

Cardiac Catheterization at Presentation and at Evaluation for Syncope Events

CriterionCardiac Catheterization
At PresentationEvaluation for Syncope
BaselineAfter 80 ppm of Inhaled NO and 100% O2BaselineAfter 80 ppm of Inhaled NO and 100% O2
Mean pulmonary systolic pressure, mm Hg3026
Pulmonary capillary wedge pressure, mm Hg1011
Mean aortic systolic pressure, mm Hg5052
Calculated pulmonary vascular resistance, Woods units5.53.24.52.5
Pulmonary resistance and systemic resistance0.480.280.410.18
  • NO, nitric oxide. —, not applicable.