QTc Intervals Changes

Electrocardiogram (ECG) Q-T prolongation is a cardiac electrophysiological disorder associated with the occurrence of arrhythmias potentially fatal. Several psychotropic drugs are associated with an increased risk of QT prolongation, which is why in clinical practice a baseline ECG is performed before a psychotropic drug is prescribed. However, there are no validated protocols establishing when to repeat this examination or describing clinical events when this examination should be repeated in clinical follow-up. The study aims to investigate the incidence of QTc prolongation events as a side effect of chronic psychotropic drug administration. For this purpose, ECGs will be recorded and confounding factors of patients at the beginning of psychotropic therapy and after 3, 6 and 12 months will be analyzed.

Objectives To assess the association of low-dose Droperidol administration in the emergency department with changes in the QTc interval. Hypothesis Our study is designed to test the null hypothesis that there will be no clinically significant change in QTc interval after administration of 2.5mg of IV Droperidol during an emergency department visit.