Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,495 questions · 1,554 findings · 140 reviews · Heart

No studies found 272 · 17.5%GRADE not reported 44 · 2.8%Very low 329 · 21.2%Low 464 · 29.9%Moderate 319 · 20.5%High 126 · 8.1%

Intervention not reported

Coronary heart disease (death from cardiovascular causes and non‐fatal myocardial infarction) · Post‐menopausal women

The intervention showed no clear difference in coronary heart disease (death from cardiovascular causes and… (high certainty).

1 finding from 1 review

Transmyocardial laser revascularization vs medical treatment

Angina reduction ‐ NYHA scale Decrease in two angina classes or more · patients with refractory angina

Transmyocardial laser revascularization may leads to higher angina reduction Decrease in two angina classes or more compared with medical treatment (low certainty).

2 findings from 1 review

Transmyocardial laser revascularization vs medical treatment

Angina reduction ‐ CCS score Decrease in two angina classes or more · patients with refractory angina

Transmyocardial laser revascularization may leads to higher angina reduction ‐ CCS score Decrease in two angina classes or more compared with medical treatment (low certainty).

1 finding from 1 review

Transmyocardial laser revascularization vs medical treatment

Early postoperative mortality Deaths in the 30 days after surgery · patients with refractory angina

Transmyocardial laser revascularization showed no clear difference in early postoperative mortality Deaths in the 30 days after surgery compared with medical treatment (high certainty).

1 finding from 1 review

Intervention not reported

Death at any time · patients with acute coronary syndrome

The intervention may leads to lower death at any time (low certainty).

1 finding from 1 review

Intervention not reported

hour Plasma Creatine Phosphokinase · patients with acute coronary syndrome
1 finding from 1 review

Intervention not reported

hour Plasma Creatine Phosphate · patients with acute coronary syndrome
1 finding from 1 review