Mean ± SD values of left ventricular functions: mean arterial blood pressure (ABP), cardiac output, peripheral resistance, left ventricular systolic pressure (LVSP), dP/dt max, and heart rate at baseline (before infusion) and at 2 minutes into an infusion of 0.6-0.8 ml/min NaHS in 6 rats. All the left ventricular-related parameters significantly dropped during NaHS infusion, without any reduction in peripheral resistance. #significantly different from baseline, P<0.01.