Electrocardiographic changes in patients with refractory epilepsy.
Mohammad Zare1, Mehri Salari, Marzieh Tajmirriahi
1Department of Neurology, Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Summary
Electrocardiogram (ECG) monitoring during video-electroencephalography (EEG) can detect significant heart rate changes in patients with refractory epilepsy. These cardiac abnormalities are crucial for identifying serious risks in epilepsy patients.
Area of Science:
- Neurology
- Cardiology
- Clinical Medicine
Background:
- Epilepsy is a common neurological disorder associated with increased mortality, especially with uncontrolled seizures.
- Patients with refractory epilepsy face higher mortality risks compared to the general population.
- Characterizing cardiac changes during seizure phases is vital for understanding epilepsy-related risks.
Purpose of the Study:
- To analyze electrocardiogram (ECG) changes during pre-ictal, ictal, and post-ictal states in patients with pharmacoresistant epilepsy.
- To investigate the relationship between seizure activity and cardiac function in this patient group.
Main Methods:
- A retrospective study involving patients with medically refractory epilepsy undergoing pre-surgical assessment.
- ECG data was collected and analyzed during different phases of seizures (pre-ictal, ictal, post-ictal).
- Statistical analysis was performed to identify significant differences in heart rate between these periods.
Main Results:
- Significant variations in heart rate (HR) were observed throughout the recorded periods.
- A statistically significant difference in HR was found between ictal and pre-ictal phases (P=0.000).
- Significant differences were also noted between ictal and post-ictal HR (P=0.003), and pre-ictal and post-ictal HR (P=0.000).
Conclusions:
- ECG monitoring is recommended as part of video-electroencephalography (EEG) for patients with refractory epilepsy.
- This monitoring can help identify potentially serious cardiac abnormalities associated with seizures.
- Integrating cardiac and neurological monitoring is crucial for comprehensive patient care in refractory epilepsy.
Related Concept Videos
Cardiac Action Potential
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
Electrocardiogram
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Epilepsy and Seizures: Overview
Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...


