Hyperthyroidism with dome-and-dart T wave: A case report: A care-compliant article
Ping Lai1, Jing-Ling Yuan, Jin-Hua Xue
1Gannan Medical University, Ganzhou Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou Department of Physiology, School of Basic Medical Sciences, Gannan Medical University Department of Cardiology, Ganzhou Cardiology Center, Society for Cardiovascular Internal Medicine, Emergency Medicine, the First Affiliated Hospital of Gannan Medical University, Ganzhou, China.
Medicine
|February 9, 2017
Summary
Dome-and-dart T waves, a rare electrocardiogram finding, are typically linked to congenital heart disease. This case suggests a potential association between these T wave abnormalities and hyperthyroidism.
Area of Science:
- Cardiology
- Endocrinology
Background:
- Dome-and-dart T waves, also known as bifid T waves, are an uncommon finding on surface electrocardiograms.
- These wave patterns are primarily observed in individuals with congenital heart conditions like atrial septal defect and ventricular septal defect.
Observation:
- A patient presented with symptoms including continuous tachycardia, palpitations, chest tightness, and headache.
- These symptoms had persisted for four days and worsened in the final day.
Findings:
- The patient was diagnosed with hyperthyroidism.
- Treatment with methimazole resulted in the alleviation of all reported symptoms.
Implications:
- While dome-and-dart T waves are documented in congenital heart disease, this case highlights a potential novel association with hyperthyroidism.
- This finding may prompt further investigation into the electrocardiographic manifestations of hyperthyroidism.


