Conventional chest physiotherapy compared to other airway clearance techniques for cystic fibrosis.

For people with cystic fibrosis, clearing mucus from the lungs is a daily task, and physiotherapists have long debated whether the traditional hands-on approach, conventional chest physiotherapy, works better than self-administered alternatives like positive expiratory pressure devices, autogenic drainage, or breathing techniques. This updated Cochrane review pooled 21 trials involving 778 participants, mostly children and young people, comparing conventional chest physiotherapy against these alternatives over short, medium, and long time frames. Across the comparisons, lung function measures showed no clear difference between conventional chest physiotherapy and the alternatives, and where single studies suggested one technique was better, these results were not confirmed elsewhere. All of the evidence was judged very low certainty, reflecting small, varied studies with different treatment durations and comparison periods that made combining results difficult.

Several studies reported, through narrative accounts, that participants preferred self-administered techniques, but this review cannot yet say any one method is superior overall.

If you or your child has cystic fibrosis, you're likely familiar with airway clearance techniques, the daily routines used to help clear mucus from the lungs. Some, like conventional chest physiotherapy, usually need someone else to help, such as a parent or physiotherapist.

Others, like positive expiratory pressure masks or autogenic drainage breathing, can be done independently. This review looked at 21 studies involving 778 people, mostly children and young people, to see whether conventional chest physiotherapy works better than these self-administered alternatives. The short answer is that no clear difference in lung function was found between conventional chest physiotherapy and the alternative techniques.

When a single study hinted that one method worked better, that finding wasn't backed up by other similar studies. Several studies reported, through people's own accounts rather than formal measurements, that many preferred techniques they could do themselves. It's important to know that all of this evidence was rated very low certainty, meaning the studies were often small and quite different from each other in design.

This means the review can't yet say one airway clearance technique is better than another, only that people may wish to try different approaches to see what suits them.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This review informs the clinical question of whether conventional chest physiotherapy offers any measurable advantage over self-administered airway clearance techniques in cystic fibrosis, a question relevant to decisions about independence, adherence, and therapy selection across the lifespan. Twenty-one randomised or quasi-randomised trials, including cross-over designs, totalling 778 participants were included, spanning short-term (seven to 20 days), medium-term, and long-term (over one year) comparisons against positive expiratory pressure, extrapulmonary mechanical percussion, active cycle of breathing technique, oscillating positive expiratory pressure devices, autogenic drainage, and exercise. Across comparisons, no clear difference in FEV1 % predicted or FVC change from baseline was detected between conventional chest physiotherapy and alternatives, and isolated findings favouring one technique in single studies were not corroborated elsewhere, raising the possibility these were chance findings.

One study found a higher annual decline in FEF25-75 with high-frequency chest compression versus conventional chest physiotherapy, and another found worse FEF25-75 decline with the forced expiratory technique component of active cycle of breathing alone, but these were isolated results amid largely null comparisons. All evidence was rated very low certainty.

The review does not establish equivalence or superiority of any technique; the limitation most affecting applicability is the small, heterogeneous study base with varying treatment durations and comparison periods that prevented robust meta-analysis, meaning conclusions about optimal airway clearance choice remain uncertain.