NPPB and congestive heart failure: The ATE group (<i>n</i> = 25) had significantly higher NT-proBNP concentrations than the OCM group (<i>n</i> = 31; <i>p</i> < 0.001); there was no significant difference in NT-proBNP concentrations between the ATE and CHF groups (<i>p</i> = 0.92).