Figure 6 A new prognostic algorithm that is structured on a multiparametric decoding scrutiny employing the stepwise introduction of PVo₂, VE/Vco₂ slope, and peak respiratory exchane ratio (RER). The arrow indicates that patients with intermediate exercise capacity (ie, PVo₂ of >10 and <18 ml/kg/min) and excessive ventilatory response (ie, VE/Vco₂ slope of ⩾35) have a total mortality rate that is comparable to that detected with a PVo₂ of ⩽10 ml/kg/min (whole population). (Adapted from Corra and Mezzani³¹.)