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- W2010383016 abstract "Abstract By means of illustrative case reports, the following difficulties in interpretation of data obtained by cardiac venous catheterization are described. 1. 1. The diastolic right atrial pressure was found to be several millimeters of mercury higher than diastolic right ventricular pressure in the absence of organic tricuspid stenosis. 2. 2. The diastolic right ventricular pressure was found to be one-third as high as the right ventricular systolic pressure in conditions other than constrictive pericarditis. 3. 3. Right ventricular systolic pressures may be somewhat higher than those in the pulmonary artery in the absence of pulmonary stenosis. Artefactually low pulmonary arterial pressure readings in the presence of pulmonary hypertension resulting from temporary obstruction of the catheter tip may cause an incorrect diagnosis of pulmonary stenosis to be made. 4. 4. Increase in oxygenation of right atrial blood may be produced by a septal defect between the left ventricle and right atrium. 5. 5. The observation of an increase in oxygen content of pulmonary arterial over right ventricular blood requires consideration of a number of possibilities. In addition to patency of the ductus arteriosus some of the other causes are variations in pulmonary flow; ventricular septal defect; anomalous pulmonary arteries; contamination of the sample by pulmonary venous blood, resulting from a peripheral location of the catheter tip. 6. 6. As the probable result of pulmonary valvular insufficiency, patent ductus arteriosus may be associated with an apparently greater increase in oxygenation of right ventricular than of pulmonary arterial blood. 7. 7. When the tip of a cardiac catheter enters a pulmonary vein after entering the cardiac shadow, caution is required to ascertain whether the pulmonary vein drains into the right or the left atrium. 8. 8. The pressure curve obtained by wedging the cardiac catheter tip into the coronary sinus or one of its tributaries may simulate a right ventricular pressure curve. 9. 9. Artefacts in the right atrial pressure curve resulting from motion of the catheter tip may cause a falsely high right atrial systolic pressure reading." @default.
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- W2010383016 date "1957-03-01" @default.
- W2010383016 modified "2023-09-23" @default.
- W2010383016 title "Difficulties in interpretation of right heart catheterization data" @default.
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- W2010383016 doi "https://doi.org/10.1016/0002-8703(57)90170-9" @default.
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