Hemodynamic parameters recorded from young and old swine used in the microarray and electrophysiological analysis.

n = 3–5 pigs per group. *Designates difference between age groups (unpaired t-test); ¥designates a change produced by autonomic blockade within a group (paired t-test). • HR = heart rate. • mAP = mean arterial pressure. • SVI = stroke volume indexed to body size. • CI = cardiac output indexed to body size. • SVRI = systemic vascular resistance indexed to body size. • mPAP = mean pulmonary arterial pressure. • PVRI = pulmonary vascular resistance indexed to body size. • LVPmax = maximal left ventricular pressure. • LVEDP = left ventricular end-diastolic pressure.