t wave alternans

Respect the T-wave! Pay attention to its shape and height

T wave alternans

Beat-to-beat variation in the size or shape of the T-wave
- Does not involve the P or QRS complex
- Associated with prolonged QT intervals
One of the strongest predictors of malignant ventricular dysrhythmias and sudden cardiac arrest

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Reference

Rajesekharan C, Vysakha KV, Karthik V, et al. T-wave alternans: a harbinger for malignant ventricular arrhythmias. BMJ Case Rep 2018 Jul 22. PMID: 30002155

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