Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,411 questions · 1,474 findings · 170 reviews

No studies found 336 · 22.8%GRADE not reported 97 · 6.6%Very low 419 · 28.4%Low 395 · 26.8%Moderate 188 · 12.8%High 39 · 2.6%

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

TDC vs medical therapy

Primary outcome measure: composite of recurrent stroke (non‐fatal or fatal) or transient ischemic attack (TIA) · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in primary outcome measure: composite of recurrent stroke (non‐fatal or… compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Time‐to‐event analyses for composite of recurrent stroke or TIA · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in time‐to‐event analyses for composite of recurrent stroke or TIA compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Time‐to‐event analyses for composite of recurrent stroke or TIA stratified by the type of device studied ‐ Amplatzer PFO occluder · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in time‐to‐event analyses for composite of recurrent stroke or TIA… compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Primary outcome measure: composite of recurrent stroke (non‐fatal or fatal) or transient ischemic attack (TIA) stratified by the type of device ‐ Amplatzer PFO occluder · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in primary outcome measure: composite of recurrent stroke (non‐fatal or… compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Recurrent events: fatal or non‐fatal (same type of stroke, i.e. ischaemic or haemorrhagic) · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in primary outcome measure: recurrent stroke (non‐fatal or fatal) compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Primary outcome measure: recurrent stroke (non‐fatal or fatal) stratified by the type of device studied ‐ Amplatzer PFO occluder · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in primary outcome measure: recurrent stroke (non‐fatal or fatal)… compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Death from any cause (secondary outcome 3) · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in secondary outcome: all‐cause mortality at the end of compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Secondary outcome:total serious adverse events at the end of · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in secondary outcome:total serious adverse events at the end of compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Secondary outcome: the incidence of atrial fibrillation · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC probably leads to higher secondary outcome: the incidence of atrial fibrillation compared with medical therapy (moderate certainty).

1 finding from 1 review

TDC vs medical therapy

Time‐to‐event analyses for recurrent stroke · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in time‐to‐event analyses for recurrent stroke compared with medical therapy (low certainty).

1 finding from 1 review

TDC vs medical therapy

Time‐to‐event analyses for recurrent stroke stratified by the type of device ‐ Amplatzer PFO occluder · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in time‐to‐event analyses for recurrent stroke stratified by the type… compared with medical therapy (moderate certainty).

1 finding from 1 review