Diagnostic value of electrocardiogram during routine electroencephalogram.

Area of Science:

• Neurology
• Cardiology
• Clinical Neurophysiology

Background:

• Electrocardiograms (EKGs) are routinely recorded alongside electroencephalograms (EEGs).
• The prevalence and types of EKG abnormalities during routine EEG recordings are not well-characterized.

Purpose of the Study:

• To investigate the frequency and types of EKG abnormalities detected during routine EEG recordings.
• To identify predictors associated with EKG abnormalities in patients undergoing EEG.

Main Methods:

• Retrospective analysis of 433 routine EEG recordings from 365 patients over one year.
• EKG recordings were interpreted by a blinded cardiologist, and EEGs were evaluated by an epileptologist.
• Demographic data, comorbidities, and EEG indications were extracted.

Main Results:

• EKG abnormalities were found in 28.5% of patients, with sinus tachycardia, premature ventricular contractions, and atrial fibrillation (Afib) being most common.
• Afib was more prevalent in females.
• Independent predictors of abnormal EKGs included older age, history of epilepsy or seizures, abnormal EEG findings, and EEGs performed for seizures/epilepsy or syncope.

Conclusions:

• A significant proportion of patients undergoing routine EEG exhibit EKG abnormalities, with Afib being notable.
• Older age, epilepsy/seizure history, abnormal EEGs, and specific indications for EEG are associated with increased risk.
• Neurologists should pay close attention to EKG findings during routine EEGs due to their potential diagnostic and therapeutic implications.