NPPA and myocardial infarction: Before the era of widespread invasive treatment of myocardial infarction, Omland et al., in a group of 139 patients treated conservatively (thrombolytic therapy only in 46% of patients), proved that NT-proANP was a significant and better prognostic factor than ANP in predicting death during one year of follow-up after myocardial infarction [18].