Volume 99, Issue 5, Pages 1066-1071 (May 1991) Echo/Doppler and Hemodynamic Correlates of Vasodilator Responsiveness in Primary Pulmonary Hypertension Susan B. Eysmann, M.D., Harold I. Palevsky, M.D., Nathaniel Reichek, M.D., Keith Hackney, Pamela S. Douglas, M.D. CHEST Volume 99, Issue 5, Pages 1066-1071 (May 1991) DOI: 10.1378/chest.99.5.1066 Copyright © 1991 The American College of Chest Physicians Terms and Conditions
FIGURE 1 Relation of peak pulmonic flow velocity to percentage of reduction in PVR (r= −0.47, p = 0.01) for eight responders and 17 nonresponders. Horizontal line at 30 percent reduction in PVR represents cutoff for vasodilator responsiveness. CHEST 1991 99, 1066-1071DOI: (10.1378/chest.99.5.1066) Copyright © 1991 The American College of Chest Physicians Terms and Conditions
FIGURE 2 Kaplan-Meier survival curves for response to vasodilator agents for eight responders and 17 nonres ponders. Each x represents a patient alive at follow-up. CHEST 1991 99, 1066-1071DOI: (10.1378/chest.99.5.1066) Copyright © 1991 The American College of Chest Physicians Terms and Conditions
FIGURE 3 Relation of mean right atrial (RA) pressure to response to vasodilator agents for eight responders and 17 nonresponders. Horizontal dotted line at 10 mm Hg represents optimal critical value used in the analysis. CHEST 1991 99, 1066-1071DOI: (10.1378/chest.99.5.1066) Copyright © 1991 The American College of Chest Physicians Terms and Conditions