Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

884 questions · 892 findings · 68 reviews · Anaesthesia

No studies found 118 · 13.2%GRADE not reported 156 · 17.5%Very low 187 · 21%Low 270 · 30.3%Moderate 119 · 13.3%High 42 · 4.7%

Nitroglycerin vs no treatment

All‐cause mortality in 30 days post operation · patients (15 years of age and older) undergoing non‐cardiac surgery under any type of anaesthesia

It is very uncertain whether nitroglycerin changes all‐cause mortality in 30 days post operation compared with no treatment (very low certainty).

1 finding from 1 review

Nitroglycerin vs no treatment

Acute myocardial infarction · patients (15 years of age and older) undergoing non‐cardiac surgery under any type of anaesthesia

It is very uncertain whether nitroglycerin changes acute myocardial infarction compared with no treatment (very low certainty).

1 finding from 1 review

Nitroglycerin vs no treatment

Cardiac ischaemia indicated by ECG · patients (15 years of age and older) undergoing non‐cardiac surgery under any type of anaesthesia

It is very uncertain whether nitroglycerin changes cardiac ischaemia indicated by ECG compared with no treatment (very low certainty).

1 finding from 1 review

Nitroglycerin vs no treatment

Adverse effects: headache · patients (15 years of age and older) undergoing non‐cardiac surgery under any type of anaesthesia

It is very uncertain whether nitroglycerin changes side effect (headache) compared with no treatment (very low certainty).

1 finding from 1 review

Nitroglycerin vs placebo

All‐cause mortality in 30 days post operation · patients (15 years of age and older) undergoing non‐cardiac surgery under any type of anaesthesia

It is very uncertain whether nitroglycerin changes all‐cause mortality in 30 days post operation compared with placebo (very low certainty).

1 finding from 1 review

Nitroglycerin vs placebo

Acute myocardial infarction · patients (15 years of age and older) undergoing non‐cardiac surgery under any type of anaesthesia

It is very uncertain whether nitroglycerin changes acute myocardial infarction compared with placebo (very low certainty).

1 finding from 1 review

Peribulbar vs retrobulbar

Need for additional injection Number of additional injections · patients undergoing cataract surgery

Peribulbar showed no clear difference in need for additional injection Number of additional injections compared with retrobulbar (low certainty).

1 finding from 1 review

Peribulbar vs retrobulbar

Local complications ‐ Conjunctival chemosis presence of conjunctival chemosis · patients undergoing cataract surgery

Peribulbar probably leads to higher local complications ‐ Conjunctival chemosis presence of conjunctival… compared with retrobulbar (moderate certainty).

1 finding from 1 review