Assessment of linezolid efficacy and safety in MDR- and XDR-TB: an Indian perspective: Table 1—

well put young people at an unacceptable risk.A young person most likely needs higher absolute values to qualify for safe resection; in other words, a 25-yr-old patient with 20% ppo function for FEV1 has much more unhealthy lungs than a 70yr-old patient with a ppo value of 30%, although in absolute values they both have 0.9 L.The current use of percent of predicted values has been shown to work well and, generally speaking, guidelines should suggest cut-off values which err on the side of safety.The trend to include more patients with marginal cardio-pulmonary functional reserves for resection will continue [4], but must be based on evidence.