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Cardiac Memory-induced T-wave Inversions
Sara C Polito1, Jonathan A Giordano1, Benjamin L Cooper1
1McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth), Department of Emergency Medicine, Houston, Texas.
Introduction:
Cardiac memory refers to T-wave inversions that result when normal ventricular activation resumes following a period of abnormal ventricular activation.
Case Report:
We present a case of a 29-year-old man with a pacemaker who presented with new, deep symmetric T-wave inversions caused by cardiac memory.
Discussion:
Abnormal ventricular activation is most commonly induced by ventricular pacing but can also occur in the setting of transient left bundle branch blocks, ventricular tachycardia, and intermittent ventricular pre-excitation.
Conclusion:
Recognition of this phenomenon may help to reduce unnecessary admissions, cardiac testing, and cardiac catheterizations.
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