Infusion of CNP in myocardial infarction (MI)‐induced rats increased LV dP/dtmax and fractional shortening, whereas LVEDP and LV dP/dtmin were decreased compared to the MI‐vehicle group, suggesting both positive inotropic and lusitropic effects of CNP (Soeki et al., 2005). Here, CNP is linked to myocardial infarction.