Quantification of right ventricular afterload in patients with and without pulmonary hypertension.

  title={Quantification of right ventricular afterload in patients with and without pulmonary hypertension.},
  author={J. W. Lankhaar and Nico Westerhof and Theo J. C. Faes and Koen M.J. Marques and J. Tim Marcus and Pieter E Postmus and Anton Vonk-Noordegraaf},
  journal={American journal of physiology. Heart and circulatory physiology},
  volume={291 4},
Right ventricular (RV) afterload is commonly defined as pulmonary vascular resistance, but this does not reflect the afterload to pulsatile flow. The purpose of this study was to quantify RV afterload more completely in patients with and without pulmonary hypertension (PH) using a three-element windkessel model. The model consists of peripheral resistance (R), pulmonary arterial compliance (C), and characteristic impedance (Z). Using pulmonary artery pressure from right-heart catheterization… 

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