Heart rate variability in infants with heart failure due to congenital heart disease: reversal of depressed heart rate variability by propranolol.

Abstract

HRV represents a noninvasive parameter that is reduced in infants with congenital heart disease depending on the severity of heart failure but not on hemodynamic disturbances. Propranolol but not digoxin therapy effectively reduced the supposed autonomic imbalance in infants with severe heart failure due to CHD.