Findings

What do systematic reviews say?

3 questions · 3 findings · 3 reviews

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 1 · 33.3%Moderate 1 · 33.3%High 1 · 33.3%

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

Transmyocardial laser revascularization versus medical therapy for refractory angina 2015 · Cochrane Headline outcomes only
OR 1.19 [0.63, 2.24]
6 studies · 967 participants
High

Perioperative beta‐blockers vs placebo or usual care

Early all‐cause mortality (within 30 days) · adults undergoing non‐cardiac surgery under general anaesthesia (to include: low‐risk, medium‐risk, and high‐risk surgeries)

Perioperative beta‐blockers showed no clear difference in early all‐cause mortality (within 30 days) compared with placebo or standard care (low certainty).

1 finding from 1 review

Perioperative beta‐blockers for preventing surgery‐related mortality and morbidity in adults undergoing non‐cardiac… 2019 · Cochrane Headline outcomes only
RR 1.17 [0.89, 1.54]
16 studies · 11446 participants
Low

Intervention not reported

Early mortality (90 days) · patients with diffuse emphysema

The intervention probably leads to higher early mortality (90 days) (moderate certainty).

1 finding from 1 review

Lung volume reduction surgery for diffuse emphysema 2016 · Cochrane Headline outcomes only
OR 6.16 [3.22, 11.79]
5 studies · 1489 participants
Moderate