Prolongation of QT interval induced by electroconvulsive therapy is attenuated by landiolol.

Objective: The objective of this study was to determine if landiolol, ultra short-acting beta adrenoceptor antagonist, attenuates the prolongation of QT interval caused by electroconvulsive therapy (ECT).

Methods: Fifteen patients, scheduled to undergo ECT for the treatment of major depression disorder, were studied. In each patient, 2 sessions of ECT were picked up and randomly assigned to be administered with (treatment L) or without continuous infusion of landiolol (treatment C).

Maternal heart rate variability just before surgery significantly correlated with emergence behavior of children undergoing general anesthesia.

Background: Emergence agitation in pediatric anesthesia is associated with preanesthesia child anxiety, which is strongly influenced by maternal mental conditions. Mental stress affects the autonomic nervous system, thereby influencing heart rate variability (HRV). The present study tested the correlations between preanesthesia maternal HRV and perioperative child behavior.