What is the clinical evidence from this study?

Study design: Observational. Population: Coronary artery disease requiring aortocoronary bypass surgery (n=91). Intervention: Aortocoronary bypass surgery vs. Pre-surgery baseline. Primary outcome: Change in physical capacity (maximal work load) (65% increase).

What question did this study set out to answer?

To quantify changes in physical work capacity before and after aortocoronary bypass surgery and evaluate their correlation with symptomatic relief and late graft patency.

January 1, 1980Scandinavian Journal of Thoracic and Cardiovascular Surgery

Functional Evaluation of Aortocoronary Bypass Surgery by Exercise Testing

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Key result

Aortocoronary bypass surgery significantly increased mean maximal work load by an average of 65% compared to pre-surgery levels in male patients.

Why the study?

Does aortocoronary bypass surgery improve physical capacity measured by exercise testing in male patients with angina or impending myocardial infarction?

Population

91 male patients undergoing aortocoronary bypass surgery for stable angina pectoris, unstable angina, or…

Comparison

Aortocoronary bypass surgery vs Pre-operative baseline (prior to surgery)

Design

Cohort

Authors

ESE SivertssenOslo University Hospital GSGudmund SembOslo University Hospital ABArne M. BenestadOslo University Hospital

Discussion

Member takes

Implication

May support improved exercise capacity in male angina patients; leaves open need for randomized confirmation before practice change.

Key Points

To quantify changes in physical work capacity before and after aortocoronary bypass surgery and evaluate their correlation with symptomatic relief and late graft patency.
Evaluated 91 male patients undergoing aortocoronary bypass surgery for stable angina, unstable angina, or impending myocardial infarction using pre- and postoperative exercise stress testing.
Measured maximal work load and calculated maximal oxygen consumption as a percentage of age-matched normal values in a patient subgroup, correlating metrics with subjective clinical improvement and late shunt angiography.
Maximal work load increased by an average of 65% postoperatively across all groups, with no significant difference between patients operated on for stable versus unstable angina or impending infarction.
Patients reporting complete relief or substantial symptomatic improvement achieved higher postoperative work capacities compared to those with less improvement or worsening symptoms.
In a evaluated subgroup, mean maximal oxygen consumption increased from 59% of normal age-adjusted values before surgery to 76% after surgery.

Study Design

Type

Observational (n=91)

Structured PICO

Does aortocoronary bypass surgery improve physical capacity measured by exercise testing in male patients with angina or impending myocardial infarction?

Population

91 male patients undergoing aortocoronary bypass surgery for stable angina pectoris, unstable angina, or impending myocardial infarction

Intervention

Aortocoronary bypass surgery

Comparator

Pre-operative baseline (prior to surgery)

Outcome

Change in physical capacity (maximal work load) measured by exercise stress testsurrogate

Main Result

Effect estimate: 65% increase

Aortocoronary bypass surgery significantly improves objective physical capacity and maximal oxygen consumption, which correlates with subjective symptom improvement.

Cite This Study

Sivertssen et al. (1980) conducted an observational in Coronary artery disease requiring aortocoronary bypass surgery (n=91). Aortocoronary bypass surgery vs. Pre-surgery baseline was evaluated on Change in physical capacity (maximal work load) (65% increase). Aortocoronary bypass surgery significantly increased mean maximal work load by an average of 65% compared to pre-surgery levels in male patients.

synapsesocial.com/papers/6a0d3d4936162e2f4b09a876 https://doi.org/10.3109/14017438009109856

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Functional Evaluation of Aortocoronary Bypass Surgery by Exercise Testing

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Functional Evaluation of Aortocoronary Bypass Surgery by Exercise Testing

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Also Consider

Also Consider