Archive for the ‘Pulmonary function’ Category - Part 8

Impact of Integrative Cardiopulmonary Exercise Testing (16)

Resting pulmonary capillary wedge pressure correlated significantly with maximum Vo2 (r= —0.69), but the ability of wedge pressure to predict exercise capacity in an individual was judged modest. For example, resting wedge pressure values of about 22 mm Hg were found in patients with maximum Vo2 ranging from about 8 tol4 ml/min/kg. buy cheap antibiotics […]

Impact of Integrative Cardiopulmonary Exercise Testing (15)

No estimate of cardiac function, including cardiac output, echocardiographic estimated left ventricular (LV) end-diastolic dimensions, and mean velocity of circumferential LV shortening or radionuclide LV ejection fraction correlated significantly with measured exercise capacity (duration of treadmill exercise or maximum Vo2). Thirteen patients were tested again five weeks after various therapies for congestive heart failure. In […]

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, […]

Impact of Integrative Cardiopulmonary Exercise Testing (13)

More recently, Olsen et al found that exercise Vo2 during submaximal work was a predictor of successful lung resection because it reflected the effects of cardiac function and oxygen transport. buy yasmin online It remains to be seen whether integrative cardiopulmonary exercise testing will play a major role in either (1) patients undergoing nonthoracic surgery […]

Impact of Integrative Cardiopulmonary Exercise Testing (12)

Because the increased metabolic and hemodynamic demands of surgery may be viewed as similar to the increased demands of exercise, integrative cardiopulmonary exercise testing has been suggested to improve preoperative evaluation. In a study of 22 patients scheduled for elective thoracotomy for lung cancer, Smith et al found that 11 patients had postoperative complications such […]

Impact of Integrative Cardiopulmonary Exercise Testing (11)

Maximum Vo2 was poorly predicted by resting lung function measurements. They suggested that ventilation measured during exercise would improve accuracy of impairment evaluation. Finally, we have found that abnormalities in lung gas exchange during exercise, especially those associated with abnormally large contributions from high venti-lation-perfusion lung units, are poorly predicted from resting lung function, including […]

Impact of Integrative Cardiopulmonary Exercise Testing (10)

After integrative cardiopulmonary exercise testing, 49 of the 134 were found to have reduced exercise capacity, 81 were determined to be normal, and only 4 remained indeterminate. buy cipro Only 16 of 95 subjects eventually concluded to have cardiovascular dysfunction resulting in exercise limitation were correctly anticipated without exercise testing. Five of 20 subjects with […]

Impact of Integrative Cardiopulmonary Exercise Testing (9)

1. Exercise Testing for Diagnosis and Screening Occupational lung disease: Impairment is the loss or reduction in physiologic function. Evaluation of impairment from occupational lung disease evaluation is often difficult because of the potential for coexisting diseases being the cause of impairment. Furthermore, other factors may cause the patient to overestimate symptoms of exercise limitation […]

Impact of Integrative Cardiopulmonary Exercise Testing (8)

Impact of the Integrative Cardiopulmonary Exercise Test on Clinical Decision-Making As discussed, exercise requires the closely coupled interaction between the various organ systems needed for gas transport between the air and the exercising muscles. Because the integrative cardiopulmonary exercise test may be useful for identifying the mechanism of exercise impairment or the degree of impairment, […]

Impact of Integrative Cardiopulmonary Exercise Testing (7)

If maximum Vo2 is reduced, other measurements are examined to determine whether the reduced 02 transport is a problem of the heart, lungs, peripheral circulation, or pulmonary circulation. As another example, the AT, the Vo2 at which Vco2 begins to increase at a faster rate than at lower work rates, is a marker of the […]

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