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Can U waves be "notched"?
Vignendra Ariyarajah1, Aliasghar Khadem, David H Spodick
1Division of Cardiology, Department of Medicine, St. Boniface General Hospital, University of Manitoba, Winnipeg, MB, Canada. vignendra@hotmail.com
Summary
Abnormal U waves, potentially bifid, were observed over 10 years despite normal Holter findings. This case explores causes of abnormal U waves and their relationship to T waves.
Area of Science:
- Cardiology
- Electrophysiology
Background:
- Abnormal U waves are linked to various cardiac conditions like hypokalemia, ischemia, and hypertension.
- Cardiac medications, particularly antiarrhythmics, can also cause U wave abnormalities.
Observation:
- This case report details possibly bifid U waves persisting for 10 years.
- The observation occurred despite repeatedly negative Holter monitor findings.
- Clinical assessment revealed an absence of atrial tachyarrhythmias.
Findings:
- The study presents a rare case of persistent, possibly bifid U waves.
- The findings highlight the ongoing investigation into the mechanisms and U-wave-T-wave relationship.
- Common causes of normal and abnormal U waves are discussed.
Implications:
- This case contributes to understanding rare U wave morphologies.
- Further research is needed to elucidate the elusive mechanisms of U-wave abnormalities.
- The findings may prompt re-evaluation of U wave significance in clinical practice.
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