Impact of Integrative Cardiopulmonary Exercise Testing (14)
Some data are available to suggest that the addition of gas exchange measurements may add to the prognostic evaluation of patients after myocardial infarction. Opasich et al measured the AT and hemodynamics in 93 post-MI patients at rest and exercise during cardiac catheterization. If the AT was greater than 50 percent of predicted maximum Vo2, exercise pulmonary artery wedge pressure was found to be normal (<20 mm Hg). However, when the AT was less than 35 percent of predicted maximum Vo2, all patients had an abnormally high wedge pressure. Using the AT and exercise heart rate response, the authors concluded that noninvasive measurements alone could predict abnormal exercise wedge pressures with 91 percent sensitivity and 92 percent specificity. buy flovent inhaler
Chronic congestive heart failure: In congestive heart failure, the integrative cardiopulmonary exercise test may be useful in comparison with invasive and noninvasive assessment of ventricular function. Exercise testing may be of particular value in evaluation of the response to therapy, largely because many important symptoms of congestive heart failure are manifested during exercise. For example, Franciosa et al studied 21 patients with chronic congestive heart failure in symptomatic New York Heart Association (NYHA) class 3-4.