Dynamic "spiked helmet sign": Further evidence for prolonged QT
Brandon W Yan1, Deborah Yip2, Jaya Mallidi3
1Department of Medicine, UCSF School of Medicine, San Francisco, CA, USA.
Journal of Electrocardiology
|April 5, 2024
Summary
A unique ECG pattern, the "spiked helmet sign" (SHS), was observed in a patient with cardiac arrest and status epilepticus. This sign may indicate prolonged QT interval, a critical cardiac condition.
Area of Science:
- Cardiology
- Neurology
- Electrocardiography
Background:
- Cardiac arrest and status epilepticus are critical medical emergencies.
- Electrocardiography (ECG) is vital for diagnosing cardiac conditions.
- Prolonged QT interval is a significant risk factor for life-threatening arrhythmias.
Observation:
- A 69-year-old female patient presented with cardiac arrest and subsequent status epilepticus.
- Variable morphologies of the "spiked helmet sign" (SHS) were identified on serial ECGs.
- The SHS was observed in the context of a prolonged QT interval.
Findings:
- The study questions whether the observed "spiked helmet sign" is a specific manifestation of QT prolongation.
- The variable morphologies suggest a dynamic relationship between the sign and the underlying cardiac electrical abnormality.
Implications:
- This finding could enhance the ECG-based diagnosis of prolonged QT interval.
- Further research is warranted to validate the SHS as a diagnostic marker for QT prolongation.
- Understanding this ECG sign may improve patient management following cardiac arrest and in cases of status epilepticus.
