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[Electrotonic modulation as a differential diagnosis of negative T wave]

Ana C Pires1, Gonzalo R Voboril1, Juan M Iroulart1

  • 1Servicio de Cardiología, Instituto de Medicina Cardiovascular, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.

Medicina
|October 18, 2025
PubMed
Summary

Electrotonic modulation, or electrical memory, causes negative T waves after abnormal heartbeats. This case study highlights its identification in an elderly patient with cardiomyopathy, differentiating it from ischemia.

Keywords:
electrotonic modulationleft bundle branch blockmemory T-wavesnegative T waves

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