28 Juin In reality, we didn’t to see a life threatening organization anywhere between complete GA-T some time VO
According to Zotter-Tufaro et al. , a lower performance in the 6MWT reflects worse prognosis and higher risk of mortality in patients with CHF, which corroborates the findings of the present study, since a longer GA-T execution time was associated with a higher VE/VCOdos slope value, and this ventilatory variable is a predictor of the prognosis of CHF. In this context, it is possible to consider GA-T another test of functional exercise capacity to evaluate the evolution of CHF, considering that the VE/VCO2 slope is correlated with ventilatory efficiency. This association can be explained by the fact that a greater capacity to exercise is responsible for better ergoreflex control, greater mitochondrial activity, greater cardiac output, and greater V/Q ratio compatibility, which are the main factors that, if altered, affect the VE/VCO2 ratio in patients with CHF . The improvement in cardiac output facilitates the transport of oxygen to skeletal muscle, which increases ventilatory control, thus providing a respiratory pattern that favours the V/Q ratio and, consequently, the VE/VCO2 slope . These findings may have implications for the use of GA-T to evaluate the effects of rehabilitation programmes on ventilatory efficiency, since the improvement in the functions of the upper limbs, lower limbs, and trunk may reduce the GA-T execution time.
VO2peak was initially proposed as another variable of prognostic value for patients with CHF , but it is strongly influenced by several factors such as sex, age, muscle conditioning, and comorbidities and has therefore been analysed together with the VE/VCO2 slope for better interpretation of functional capacity and prognosis in clinical practice .