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Normal hemodynamic waveforms recorded during right heart catheterization. Atrial pressure tracings have a characteristic "a" wave that reflects atrial contraction and a "v" wave that reflects pressure changes in the atrium during ventricular systole. Ventricular pressure tracings have a low pressure diastolic filling period and a sharp rise in pressure that occurs during ventricular systole. ra, right atrium; rv, right ventricle; pa, pulmonary artery; pcwp, pulmonary capillary wedge pessure; s, systole; d, diastole. Source: Chapter 230. Diagnostic Cardiac Catheterization and Coronary Angiography, Harrison's Principles of Internal Medicine, 18e Citation: Longo DL, Fauci AS, Kasper DL, Hauser SL, Jameson J, Loscalzo J. Harrison's Principles of Internal Medicine, 18e; 2012 Available at: http://mhmedical.com/ Accessed: May 12, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved
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