Comorbidity between epilepsy and cardiac arrhythmias: Implication for treatment

Area of Science:

• Cardiology
• Neurology
• Clinical Pharmacology

Background:

• Epilepsy frequently co-occurs with neurological and non-neurological diseases, including cardiac arrhythmias, particularly in severe epilepsy cases or critically ill patients.
• Shared underlying vascular and genetic factors can predispose individuals to both seizures and cardiac electrophysiological abnormalities.
• Uncontrolled seizures can precipitate life-threatening arrhythmias, highlighting the intricate relationship between neurological and cardiac health.

Purpose of the Study:

• To explore the complex relationship between epilepsy and cardiac arrhythmias.
• To evaluate the impact of antiepileptic drugs (AEDs) and antiarrhythmic drugs (AADs) on cardiac electrophysiology and seizure control.
• To provide guidance on selecting appropriate medications for patients with comorbid epilepsy and arrhythmias.

Main Methods:

• Review of existing literature on the comorbidity of epilepsy and cardiac arrhythmias.
• Analysis of the mechanisms by which AEDs and AADs affect cardiac and neural ion channels.
• Clinical practice considerations for medication selection in affected patients.

Main Results:

• Both AEDs and AADs can influence cardiac electrophysiology and neuronal excitability, with potential for adverse interactions.
• Traditional AEDs may possess arrhythmogenic properties and enzyme-inducing effects, potentially compromising concurrent AAD treatment.
• Some newer AEDs have a lower risk of cardiac side effects, but electrocardiogram (ECG) monitoring is still advised.

Conclusions:

• Careful selection of AEDs is essential in patients with epilepsy and cardiac arrhythmias to minimize cardiac risks.
• AEDs with a lower propensity to affect cardiac electrophysiology are preferred.
• Ongoing monitoring, including ECG, is recommended for patients on certain AEDs due to potential cardiac rhythm disturbances.