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

Mortality · patients undergoing cardiac surgery

The intervention showed no clear difference in mortality (moderate certainty).

1 finding from 1 review

Intervention not reported

Myocardial infarction ECG/cardiac enzymes · patients undergoing cardiac surgery

The intervention showed no clear difference in myocardial infarction ECG/cardiac enzymes (low certainty).

1 finding from 1 review

Intervention not reported

Atrial fibrillation ECG · patients undergoing cardiac surgery

The intervention probably leads to lower atrial fibrillation ECG (moderate certainty).

1 finding from 1 review

Intervention not reported

Renal failure Serum creatinine/urea · patients undergoing cardiac surgery

The intervention showed no clear difference in renal failure Serum creatinine/urea (moderate certainty).

1 finding from 1 review