Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,703 questions · 3,824 findings · 858 reviews

No studies found 573 · 15%GRADE not reported 383 · 10%Very low 993 · 26%Low 1,062 · 27.8%Moderate 614 · 16.1%High 199 · 5.2%

Heat and moisture exchangers (HME) vs heated humidifiers (HH)

Artificial airway occlusion (measured over 3‐15 days (median 4 days)) · ventilated adults (18 trials) and children (1 trial)

Heat and moisture exchangers (HME) showed no clear difference in artificial airway occlusion (measured over 3‐15 days (median 4 days)) compared with heated humidifiers (HH) (low certainty).

1 finding from 1 review

Heat and moisture exchangers (HME) vs heated humidifiers (HH)

All‐cause mortality, over the course of the study · ventilated adults (18 trials) and children (1 trial)

Heat and moisture exchangers (HME) showed no clear difference in mortality ‐ all cause (Measured over 3‐15 days (median 8 days)) compared with heated humidifiers (HH) (low certainty).

1 finding from 1 review

Heat and moisture exchangers (HME) vs heated humidifiers (HH)

Pneumonia · ventilated adults (18 trials) and children (1 trial)

Heat and moisture exchangers (HME) showed no clear difference in pneumonia (Measured over 4‐21 days (median 4 days)) compared with heated humidifiers (HH) (low certainty).

1 finding from 1 review

Emergency endovascular aneurysm repair vs conventional open repair

Short‐term mortality (30‐day or in‐hospital) · people diagnosed with RAAA

Emergency endovascular aneurysm repair showed no clear difference in short‐term mortality (30‐day or in‐hospital) compared with conventional open repair (moderate certainty).

1 finding from 1 review

Emergency endovascular aneurysm repair vs conventional open repair

Complication: renal complications (moderate or severe) (30‐day) · people diagnosed with RAAA

Emergency endovascular aneurysm repair showed no clear difference in complication: renal complications (moderate or severe) (30‐day) compared with conventional open repair (low certainty).

1 finding from 1 review