Elevated Pulmonary Artery Pressure (Part 4)
Left ventricular hypertrophy on the electrocardiogram was considered to be present when it met the criteria for LVH (voltage included) according to the computer programs from Marquette Electronics, Inc (Marquette Analysis Program 1984, pp 18-19). flovent inhaler
Hemodynamic data were collected from both the right and left heart catheterization. Pressure tracings were recorded on a recorder (Hewlett-Packard 4568C) with fluid-filled catheters. Left ventricular angiograms were obtained in the standard 30° right anterior oblique projection and the ejection fraction was calculated using the single plane method of Dodge. Significant CAD was defined as a 70 percent or greater luminal diameter narrowing of at least one of the following major vessels: the left anterior descending, the left circumflex (or large marginal branch), and the right coronary artery. Left main coronary disease was considered to be present when a 50 percent or greater narrowing was visualized, and these patients were assigned triple-vessel disease for the overall statistical analysis. All other vessels were considered “normal.” The angiograms were read as part of the clinical practice of the institution and not under controlled conditions. Pulmonary vascular resistance was calculated as pulmonary artery mean pressure minus pulmonary capillary wedge pressure divided by cardiac output times 80.