What question did this study set out to answer?

To determine the incidence and risk factors of postoperative myocardial reinfarction among patients with prior myocardial infarction undergoing general anesthesia.

May 1, 1977Anesthesia & Analgesia

Myocardial Infarction After General Anesthesia

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Why the study?

Does the timing of surgery after a previous myocardial infarction affect the risk of postoperative reinfarction in patients undergoing general anesthesia?

Population

32,877 patients who underwent general anesthesia at the Mayo Clinic during 1967 and 1968, including a…

Design

Cohort

Follow-up

1 week postoperative

Authors

STSait TarhanUniversity of Minnesota EMEmerson A. MoffittTwitter (United States)WTWilliam F. TaylorKing's College London

Discussion

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Implication

Surgery within 3 months of MI may elevate reinfarction risk; Level 3 data leaves open optimal timing under contemporary care.

Key Points

To determine the incidence and risk factors of postoperative myocardial reinfarction among patients with prior myocardial infarction undergoing general anesthesia.
Analyzed 32,877 patients who underwent general anesthesia during 1967–1968 at the Mayo Clinic, identifying a cohort of 422 patients with documented prior myocardial infarction.
Monitored patients for recurrent myocardial infarction during the first postoperative week, assessing risk according to anesthesia type, duration, surgical location, and timing of previous infarction.
Postoperative reinfarction occurred in 6.6% of patients with previous infarction, peaking on the third postoperative day, with no relationship observed between reinfarction and anesthesia type or duration.
Reinfarction rates were 37% when surgery occurred within 3 months of prior infarction, declining to 16% at 3 to 6 months, and remaining between 4% and 5% after more than 6 months.
Operations performed on the thorax and upper abdomen were followed by three times as many reinfarctions compared to procedures at other anatomic sites.

Structured PICO

Does the timing of surgery after a previous myocardial infarction affect the risk of postoperative reinfarction in patients undergoing general anesthesia?

Population

32,877 patients who underwent general anesthesia at the Mayo Clinic during 1967 and 1968, including a specific cohort of 422 patients with a previous myocardial infarction.

Intervention

General anesthesia for surgical procedures (analyzed by timing since prior myocardial infarction and surgical site).

Outcome

Postoperative myocardial infarction (reinfarction) during the first postoperative week.hard clinical

The risk of postoperative myocardial infarction is highest when surgery is performed within 3 months of a prior MI and decreases significantly after 6 months, establishing foundational perioperative risk stratification.

Cite This Study

Tarhan et al. (1977) studied this question.

synapsesocial.com/papers/6a8232ec1fb4be735b3f0fc6 https://doi.org/10.1213/00000539-197705000-00034

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Myocardial Infarction After General Anesthesia

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Myocardial Infarction After General Anesthesia

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider