Novos indicadores auxiliares no diagnóstico diferencial da limitação funcional cardiorrespiratória de pacientes com doença pulmonar obstrutiva crônica e insuficiência cardíaca congestiva / New auxiliary indicators for the differential diagnosis of functional cardiorespiratory limitation in patients with chronic obstructive pulmonary disease and congestive heart failure
Arq. bras. cardiol
;
80(5): 521-530, May 2003. tab
Artículo
en Inglés, Portugués
| LILACS
| ID: lil-336449
RESUMO
OBJECTIVE:
To differentiate the nature of functional cardiorespiratory limitations during exercise in individuals with chronic obstructive pulmonary disease (COPD) or congestive heart failure (CHF) and to determine indicators that may help their classifications.METHODS:
The study comprised 40 patients 23 with COPD and 17 with CHF. All individuals underwent maximal cardiopulmonary exercise testing on a treadmill.RESULTS:
The values of peak gas exchange ratio (R peak), peak carbon dioxide production (VCO2 peak), and peak oxygen ventilatory equivalent (V E O2 peak) were higher in the patients with CHF than in those with COPD, and, therefore, those were the variables that characterized the differences between the groups. For group classification, the differentiating functions with the R peak, VCO2 peak (L/min), and V E O2 peak variables were used as follows group COPD - 44.886 + 78.832 x R peak + 5.442 x VCO2 peak + 0.336 x V E O2 peak; group CHF - 69.251 + 89.740 x R peak + 8.461 x VCO2 peak + 0.574 x V E O2 peak. The differentiating function, whose result is greater, correctly classifies the patient's group as 90 percent.CONCLUSION:
The R peak, VCO2 peak, and V E O2 peak values may be used to identify the cause of the functional cardiorespiratory limitations in patients with COPD and CHF
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Consumo de Oxígeno
/
Enfermedad Pulmonar Obstructiva Crónica
/
Insuficiencia Cardíaca
Tipo de estudio:
Estudio diagnóstico
/
Estudio pronóstico
Límite:
Adulto
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
/
Portugués
Revista:
Arq. bras. cardiol
Asunto de la revista:
Cardiología
Año:
2003
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Federal de São Paulo/BR
/
Universidade Metodista de Piracicaba/BR
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