Clinical usefulness of response profiles to rapidly incremental cardiopulmonary exercise testing

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Abstract

The advent of microprocessed "metabolic carts" and rapidly incremental protocols greatly expanded the clinical applications of cardiopulmonary exercise testing (CPET). The response normalcy to CPET is more commonly appreciated at discrete time points, for example, at the estimated lactate threshold and at peak exercise. Analysis of the response profiles of cardiopulmonary responses at submaximal exercise and recovery, however, might show abnormal physiologic functioning which would not be otherwise unraveled. Although this approach has long been advocated as a key element of the investigational strategy, it remains largely neglected in practice. The purpose of this paper, therefore, is to highlight the usefulness of selected submaximal metabolic, ventilatory, and cardiovascular variables in different clinical scenarios and patient populations. Special care is taken to physiologically justify their use to answer pertinent clinical questions and to the technical aspects that should be observed to improve responses' reproducibility and reliability. The most recent evidence in favor of (and against) these variables for diagnosis, impairment evaluation, and prognosis in systemic diseases is also critically discussed. © 2013 Roberta P. Ramos et al.

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Ramos, R. P., Alencar, M. C. N., Treptow, E., Arbex, F., Ferreira, E. M. V., & Neder, J. A. (2013). Clinical usefulness of response profiles to rapidly incremental cardiopulmonary exercise testing. Pulmonary Medicine. https://doi.org/10.1155/2013/359021

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