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May 1, 1954Circulation394 citations

A New Electrocardiographic Pattern Observed in Cerebrovascular Accidents

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GBG.E. BurchRMRobert P MeyersJAJ.A. Abildskov

Key Result

Patients with cerebrovascular accidents exhibited a unique electrocardiographic pattern featuring large amplitude T waves and fused U waves, likely indicating a prolonged Q-U interval.

Key Points

  • To describe and characterize a unique electrocardiographic waveform pattern observed in patients experiencing cerebrovascular accidents.
  • Analyzed electrocardiographic tracings from patients presenting with acute cerebrovascular accidents to evaluate waveform morphology and interval durations.
  • Demonstrated an electrocardiographic pattern predominantly marked by T waves with notably increased amplitude and broad duration.
  • Identified frequent occurrence of large U waves fusing partially or completely with T waves, indicating that associated Q-T interval prolongation predominantly represents a prolonged Q-U interval.

Structured PICO

P
Population
17 patients with cerebrovascular accidents (7 with cerebral hemorrhage, 7 with subarachnoid hemorrhage, 3 with unclassified C.V.A.) evaluated primarily at Charity Hospital in New Orleans. Ages ranged from 32 to 79 years.
O
Outcome
Electrocardiographic changes, specifically Q-T interval duration, T wave amplitude and configuration, and U wave presence.surrogate

This early case series identifies a distinct electrocardiographic pattern of prolonged Q-T intervals and large T and U waves associated with acute cerebrovascular accidents.

Limitations

  • No detailed study of the mechanism responsible for the syndrome
  • Lack of adequate serial tracings
  • Death of some patients prevented determining the duration of electrocardiographic changes
  • No adequate measurement of electrolytes to determine if changes were caused by electrolyte metabolism disturbances

Abstract

An electrocardiographic pattern was encountered in patients with cerebrovascular accidents which consisted primarily of T waves of large amplitude and duration. Large U waves were often present which may fuse in part or entirely within the T wave. Because of the presence and fusion of the T and U waves, the prolonged Q-T interval associated with the pattern was most probably a Q-U interval.

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Cite This Study

Burch et al. (1954) studied this question. Patients with cerebrovascular accidents exhibited a unique electrocardiographic pattern featuring large amplitude T waves and fused U waves, likely indicating a prolonged Q-U interval.

synapsesocial.com/papers/6984fac3ff72350302d23f81https://doi.org/10.1161/01.cir.9.5.719
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