Rev. DERC (Online) 2021; 27(1): 32-39
Dyspnea to Be Clarified – Cardiopulmonary Test Aid In the Identification of Effort-Induced Bronchospamus
Abstract
The conventional exercise test is the test most commonly performed in detecting cardiovascular changes and assessing functional capacity, however, when the mechanisms limiting the continuity of exercise before ventilatory etiology or gas exchange, an identification of the probable diagnostic etiology is compromised. In the present case that we approached, the patient had undergone two-dimensional echocardiography that showed normal biventricular function, as well as physiological heart valves and diameters and also underwent exercise testing, which did not show any clinical, hemodynamic or electrocardiographic abnormality that would justify the disproportionate blood dynamics and dyspnea efforts. to the. He was then referred to perform an ergospirometric test complete with spirometry before and after the effort with analysis of the flow-volume curve during the incremental exercise. The cardiopulmonary exercise test revealed normal cardiocirculatory responses, but showed a reduction in expiratory volumes and flows after effort, in addition to showing a gradual reduction in inspiratory capacity. The case illustrates the importance of the multifactorial analysis obtained by ergospirometry, reinforces the value of ventilatory analysis by spirometry and the diagnostic possibility of bronchospasm (bronchoconstriction) induced or exacerbated by effort.
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