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Published on: January 29, 2011
Effect of breathing re-training on end-tidal carbon-di-oxide in patients with asthma: a systematic review and
Shruti Kadam1, Venkatesan Prem1, Reepa Avichal Ughreja1
1Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India.
Objective:
The review aims to determine the effect of breathing re-training on End-tidal carbon-di-oxide (ETCO2) in patients with asthma.
Data Sources:
A systematic search of articles was performed in PubMed, Cochrane, PEDro, Scopus, and Ovid databases from their inception till May 2022.
Study Selections:
Studies were included if the patients were clinically diagnosed with mild-moderate asthma. Randomized controlled trials that monitored ETCO2 as a primary or secondary outcome were included. Studies were examined for potential risk of bias using the Revised Cochrane risk of bias tool by two independent reviewers.
Results:
Eight articles were included. The trials used various techniques like Buteyko, Papworth, Biofeedback, and holistic approach. Quantitative analysis was conducted to examine the effects on ETCO2 at various time points. A significant large effect was seen on ETCO2 following breathing re-training post-treatment, 3 and 6 months post-intervention.
Conclusion:
There is moderate evidence for a significant effect of breathing re-training on ETCO2 in the short and long term in patients with asthma. However, high-quality randomized controlled trials using standardized measurement of ETCO2 are required to evaluate the effects of different breathing re-training techniques.
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