Ventricular tachycardia manifested as tonic seizure

Area of Science:

• Neurology
• Cardiology
• Clinical Medicine

Background:

• Nonepileptic seizures (NES) present similarly to epileptic seizures but lack characteristic epileptiform neurophysiological changes.
• Cardiovascular disorders can induce loss of consciousness and abnormal movements mimicking seizures due to cerebral hypoxia.
• Differentiating NES from epileptic seizures is crucial for appropriate diagnosis and treatment.

Observation:

• A patient presented with recurrent episodes of loss of consciousness and generalized tonic postures.
• Observed movements included leg extension, arm flexion/extension, and upward gaze, resembling seizure activity.
• Initial presentation suggested a possible seizure disorder.

Findings:

• Diagnostic evaluation confirmed the episodes were not epileptic in origin.
• The underlying cause of the observed symptoms was identified as ventricular tachycardia.
• The patient's seizure-like episodes were directly attributed to cardiac arrhythmia-induced cerebral hypoxia.

Implications:

• This case underscores the importance of considering cardiac etiologies in the differential diagnosis of apparent nonepileptic seizures.
• Accurate diagnosis of cardiac-induced events prevents misdiagnosis and inappropriate anti-epileptic drug treatment.
• Recognition of ventricular tachycardia as a cause of seizure-like activity can guide timely cardiovascular intervention and improve patient outcomes.