Sertindole causes distinct electrocardiographic T-wave morphology changes.
Jimmi Nielsen1, Claus Graff, Thomas Hardahl
1Unit for Psychiatric Research, Aalborg Psychiatric Hospital, Aarhus University Hospital, Mølleparkvej 10, PO Box 210, DK-9100 Aalborg, Denmark. jin@rn.dk
Sertindole treatment can alter T-wave morphology on ECGs, sometimes without QT interval prolongation. Analyzing T-wave changes may help assess drug-induced arrhythmia risk.
Area of Science:
- Cardiology
- Pharmacology
- Electrophysiology
Background:
- Sertindole's QT prolongation is linked to KCNH2 (HERG) channel blockade.
- Limited data exists on sertindole's impact on T-wave morphology.
Purpose of the Study:
- To quantitatively analyze T-wave morphology changes during sertindole treatment.
- To compare the effect size of T-wave morphology changes with QTcF interval prolongation.
Main Methods:
- Digital 12-lead ECGs were recorded at baseline and steady-state in 37 patients on sertindole.
- ECG analysis focused on quantitative T-wave morphology and Fridericia-corrected QT duration (QTcF).
Main Results:
- Significant T-wave morphology changes were observed during sertindole treatment.
- Four patients developed notched T-waves; mean QTcF prolongation was 19 ms.
- T-wave morphology analysis showed a higher effect size (ES=1.92) than QTcF (ES=0.88).
Conclusions:
- T-wave morphology changes during sertindole treatment can occur independently of QTcF prolongation.
- T-wave morphology analysis may offer a clinically relevant method for evaluating drug-induced arrhythmia risk.
More Related Videos
10:41Laser-Induced Action Potential-Like Measurements of Cardiomyocytes on Microelectrode Arrays for Increased Predictivity of Safety Pharmacology
Published on: September 13, 2022
07:42Contractions of Human-iPSC-derived Cardiomyocyte Syncytia Measured with a Ca-sensitive Fluorescent Dye in Temperature-controlled 384-well Plates
Published on: October 18, 2018
Related Concept Videos
Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers
Mechanism of Cardiac Arrhythmias
Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
Electrocardiogram Fundamentals
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin to...
Dysrhythmias III: Characteristics of Dysrhythmias
