Findings

What do systematic reviews say?

8 questions · 8 findings · 1 reviews · Airways

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No studies found 2 · 25%GRADE not reported 0 · 0%Very low 1 · 12.5%Low 3 · 37.5%Moderate 1 · 12.5%High 1 · 12.5%

CPAP with expiratory pressure relief vs fixed CPAP

Blood pressure ‐ not measured · adults with a diagnosis of sleep apnoea

The review found no eligible studies for this question.

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

CPAP with expiratory pressure relief vs fixed CPAP

Machine usage Hours per night · adults with a diagnosis of sleep apnoea

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
no estimate extracted
9 studies · 609 participants
Low

CPAP with expiratory pressure relief vs fixed CPAP

Machine usage assessed by number of participants using machine for 4 or more hours per night ‐ not measured · adults with a diagnosis of sleep apnoea

The review found no eligible studies for this question.

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

CPAP with expiratory pressure relief vs fixed CPAP

Symptoms · adults with a diagnosis of sleep apnoea

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
no estimate extracted
6 studies · 515 participants
Moderate

CPAP with expiratory pressure relief vs fixed CPAP

Withdrawals (parallel group trials/first arm cross‐over trials) · adults with a diagnosis of sleep apnoea

CPAP with expiratory pressure relief showed no clear difference in withdrawals (parallel group trials/first arm cross‐over trials) compared with fixed CPAP (low certainty).

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
OR 0.86 [0.48, 1.55]
2 studies · 298 participants
Low

CPAP with expiratory pressure relief vs fixed CPAP

Quality of life · adults with a diagnosis of sleep apnoea

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
no estimate extracted
1 study · 74 participants
Low

CPAP with expiratory pressure relief vs fixed CPAP

AHI · adults with a diagnosis of sleep apnoea

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
no estimate extracted
5 studies · 342 participants
High

CPAP with expiratory pressure relief vs fixed CPAP

Adverse events (machine tolerability outcomes) · adults with a diagnosis of sleep apnoea

1 finding from 1 review

Pressure modification or humidification for improving usage of continuous positive airway pressure machines in adults… 2019 · Cochrane Headline outcomes only
no estimate extracted
6 studies · 577 participants
Very low