Almost 20 years ago, Adriaan Versprille published an editorial in this journal to explain why, in his opinion, the calculation of pulmonary vascular resistance (PVR) is meaningless [1]. The uncertainties of PVR were underscored a year later by McGregor and Sniderman in the American Journal of Cardiology [2]. Obviously, both papers failed to convince. A Medline search from 1985 to the end of 2002 reveals no less than 7,158 papers with PVR calculations. What is it that could be wrong in all this literature?
Keywords
- Pulmonary Vascular Resistance
- Pulmonary Circulation
- Pulmonary Blood Flow
- Vasomotor Tone
- Alveolar Pressure
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.