Table 1. Rate-dependent Effects of Partial and Complete Autonomic Nervous System Blockade in Awake Dogs (n = 7)

Values are shown as mean ± SD.

*P < 0.05 versus  control. †P < 0.05 versus  thoracic epidural anesthesia (TEA).

CL = cycle length; MAP90 RV = right ventricular monophasic action potential duration at 90% repolarization; ERP RV = right ventricular refractory period measured at twice diastolic threshold; ANS = autonomic nervous system blockade.