Why the study?
Does surgical repair of atrial septal defect alter heart rate variability in children?
Does surgical repair of atrial septal defect alter heart rate variability in children?
Children with atrial septal defects have reduced vagally mediated heart rate variability that improves after surgical repair, indicating reversible abnormalities in autonomic control.
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Surgical ASD closure was associated with HRV improvement in children; leaves open whether this alters clinical outcomes.
Finley et al. (1989) studied this question.
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