Pulmonary Hypertension by the Method of Paul Wood.

Chest
John H Newman

Abstract

A physiological approach to the analysis of hemodynamic data in pulmonary hypertension (PH) has the advantage of reducing the large number (well over 100) of potential causal illnesses into four simple mechanisms. A fifth condition is composed of mixtures of the four basic mechanisms. This approach was beautifully described by Paul Wood, the great cardiologist whose name is given to the units of pulmonary vascular resistance (PVR), Wood units. This approach uses well understood physiological contributions to pulmonary vascular pressure. It is powerful, the major uncertainty being in determination of the magnitude of each mechanism in patients that have mixed PH of several causes. It also makes sense of the occasionally awkward clustering of conditions in the clinical classification of the World Symposium, which omits pulmonary vasoconstriction, hyperkinetic states, and the highly prevalent condition of "mixed" PH. This method of analysis is described and demonstrated, much as Wood did in his writings. The method is useful in the office, the ICU, and in consultation. A basic message from this approach is that correct assessment requires measurement of each of the three major inputs, pulmonary arterial pressure (Ppa), pulmonary a...Continue Reading

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Citations

Apr 17, 2021·American Journal of Respiratory and Critical Care Medicine·Bradley A MaronErika B Rosenzweig
Sep 8, 2020·Chest·C Gregory Elliott, Nicholas S Hill
Sep 5, 2021·Mayo Clinic Proceedings·Charles D BurgerRobert P Frantz

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