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- Title
T-wave alternans: an ominous pattern for malignant arrhythmias.
- Authors
Feng, Hang-Wei; Zhao, Yun-Tao; Lin, Jian; Weng, Cui-Lian
- Abstract
His serum K SP + sp was 4.4 mmol/l and Mg SP 2+ sp was 1.3 mmol/l. Intravenous amiodarone therapy was initiated, and after 72 h of drug exposure (total dose of 4.5 g amiodarone), sinus rhythm was successfully restored. Learning points for clinicians Macroscopic T-wave alternans (TWA) signifies significant vulnerability during repolarization and may be a harbinger of impending electrical instability. Introduction This case study presents the electrocardiographic (ECG) findings of a 70-year-old male with chronic heart failure caused by atrial fibrillation, who developed macrovolt T-wave alternans (TWA) and subsequent malignant arrhythmia after amiodarone treatment.
- Subjects
ARRHYTHMIA; VENTRICULAR tachycardia; VENTRICULAR arrhythmia; CARDIAC arrest; ACTION potentials; MEMBRANE potential
- Publication
QJM: An International Journal of Medicine, 2023, Vol 116, Issue 9, p781
- ISSN
1460-2725
- Publication type
Article
- DOI
10.1093/qjmed/hcad097