Autonomic balance and cardiac function

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Abstract
Cardiovascular homeostasis is in large part mediated by the autonomic nervous system. Blood pressure perturbations are sensed by the baro-receptors and initiate rapid reflex changes in both parasympathetic and sympathetic activity. Autonomic outflow to the heart might play a critical role in cardiac well-being. Recent data are reviewed which suggest that autonomic dysfunction predisposes to malignant arrhythmias and death. Moreover, intact reflexes appear to be importantly involved in terminating myocardial ischemic episodes. It is therefore conceivable that an intact and functional autonomic nervous system might have a significant impact on cardiac morbidity and mortality in patients recovering from anesthesia and surgery.

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