The relationship between pulmonary arterial pressure and roentgenographic appearance in mitral stenosis
| Autor: | Edward Woodward, Lewis Dexter, William L. Kraus, Charles B. Moore, Donald S. Dock |
|---|---|
| Rok vydání: | 1959 |
| Předmět: |
Mean arterial pressure
medicine.medical_specialty Vascular disease business.industry medicine.medical_treatment Pulmonary Artery medicine.disease Radiography Stenosis Mitral valve stenosis Blood pressure medicine.artery Internal medicine Pulmonary artery Cardiology medicine Humans Mitral Valve Stenosis Arterial Pressure Radiology Cardiology and Cardiovascular Medicine Pulmonary wedge pressure business Cardiac catheterization |
| Zdroj: | American heart journal. 58 |
| ISSN: | 0002-8703 |
| Popis: | 1.1. The prominence of the pulmonary arterial segment on the posteroanterior chest x-ray in a group of 56 patients with mitral stenosis was assessed by calculation of the "PA/chest ratio." The distance from the midline, as defined by the vertebral spines, to the left-most point of the pulmonary arterial segment on the cardiac silhouette is measured and divided by one half of the transthoracic diameter, as suggested by Ozawa. 6 2.2. A positive correlation between the "PA/chest ratio" and pulmonary arterial mean pressure was found. The correlation was exponential in character, resembling the shape of the pressure-volume curve. 3.3. The correlation between PA/chest ratio and pulmonary arterial mean pressure is poor in patients with left-to-right shunts and increased pulmonary blood flow. 4.4. In patients with mitral stenosis, in whom pulmonary blood flow varies over a relatively narrow range, the PA/chest ratio is a useful guide to the presence or absence of pulmonary vascular disease, facilitating preoperative evaluation of these patients without cardiac catheterization. |
| Databáze: | OpenAIRE |
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