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November 1, 1971HeartOpen Access

Electrocardiographic abnormalities during exercise 3 weeks to 18 months after anterior myocardial infarction.

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Why the study?

What are the electrocardiographic abnormalities produced by exercise at varying time intervals after an anterior myocardial infarction?

Population

12 patients after an anterior myocardial infarction

Design

Case_series

Follow-up

18 months

Authors

JAJan‐Henrik AtterhögSabbatsberg HospitalLEL G EkelundUniversity of North Carolina at Chapel HillLKL. KaijserUppsala University

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Implication

Exercise-induced ST elevation may signal remodeling early after anterior MI; leaves open its prognostic utility beyond modern imaging.

Key Points

  • The aim is to evaluate electrocardiographic changes during exercise following an anterior myocardial infarction.
  • Studied 12 patients at varying intervals (3 weeks to 18 months) post-anterior myocardial infarction.
  • Monitored electrocardiographic responses to exercise.
  • Compared ST segment changes over the infarcted and distant leads.
  • Three weeks post-infarction, significant ST segment elevation was observed in 10 out of 12 patients during exercise.
  • Over time, the ST segment response decreased, with some subjects developing ST segment depression.
  • T wave amplitude increased during exercise throughout the follow-up, though changes were nonspecific.

Structured PICO

What are the electrocardiographic abnormalities produced by exercise at varying time intervals after an anterior myocardial infarction?

P
Population
12 patients after an anterior myocardial infarction
I
Intervention
Exercise testing at varying time intervals (3 weeks to 18 months post-infarction)
O
Outcome
Electrocardiographic abnormalities (ST segment changes) during exercisesurrogate

Exercise-induced ST segment elevation in the early phase after anterior myocardial infarction is common and gradually resolves over months, potentially serving as a prognostic marker.

Cite This Study

Atterhög et al. (1971) studied this question.

synapsesocial.com/papers/6a1a8ee07ff99bba0645dc0ahttps://doi.org/10.1136/hrt.33.6.871
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Radioelectrocardiography during Exercise in Patients with Angina Pectoris1962 · 42 citations
  2. 2Studies of Electrocardiographic Changes during Exercise (Modified Double Two-Step Test)1952 · 32 citations
  3. 3THE USE OF THE EXERCISE TEST IN THE DIAGNOSIS OF CORONARY INSUFFICIENCY1949 · 29 citations
  4. 4The electrocardiographic work and hypoxemia tests1951 · 99 citations