Cardiovascular function before and during the first hour after cardiac arrest and cardiopulmonary resuscitation in WT (open circle), NOS3−/− (black square), sGCα1−/− (open triangle), and NOS3−/−CSTg (gray square) mice. LVESP, left ventricular end-systolic pressure. dP/dtmax, maximum rate of left ventricular pressure rise. Tau, time constant of left ventricular isovolumic relaxation. *P<0.05 vs WT mice after CPR by repeated measures ANOVA.