Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults
Language: 
English
Abstract: 

BACKGROUND: Dysfunctional breathing/hyperventilation syndrome (DB/HVS) is a respiratory disorder, psychologically or physiologically based, involving breathing too deeply and/or too rapidly (hyperventilation) or erratic breathing interspersed with breath-holding or sighing (DB). DB/HVS can result in significant patient morbidity and an array of symptoms including breathlessness, chest tightness, dizziness, tremor and paraesthesia. DB/HVS has an estimated prevalence of 9.5% in the general adult population, however, there is little consensus regarding the most effective management of this patient group. OBJECTIVES: (1) To determine whether breathing exercises in patients with DB/HVS have beneficial effects as measured by quality of life indices (2) To determine whether there are any adverse effects of breathing exercises in patients with DB/HVS SEARCH METHODS: We identified trials for consideration using both electronic and manual search strategies. We searched CENTRAL, MEDLINE, EMBASE, and four other databases. The latest search was in February 2013. SELECTION CRITERIA: We planned to include randomised, quasi-randomised or cluster randomised controlled trials (RCTs) in which breathing exercises, or a combined intervention including breathing exercises as a key component, were compared with either no treatment or another therapy that did not include breathing exercises in patients with DB/HVS. Observational studies, case studies and studies utilising a cross-over design were not eligible for inclusion.We considered any type of breathing exercise for inclusion in this review, such as breathing control, diaphragmatic breathing, yoga breathing, Buteyko breathing, biofeedback-guided breathing modification, yawn/sigh suppression. Programs where exercises were either supervised or unsupervised were eligible as were relaxation techniques and acute-episode management, as long as it was clear that breathing exercises were a key component of the intervention.We excluded any intervention without breathing exercises or where breathing exercises were not key to the intervention. DATA COLLECTION AND ANALYSIS: Two review authors independently checked search results for eligible studies, assessed all studies that appeared to meet the selection criteria and extracted data. We used standard procedures recommended by The Cochrane Collaboration. MAIN RESULTS: We included a single RCT assessed at unclear risk of bias, which compared relaxation therapy (n = 15) versus relaxation therapy and breathing exercises (n = 15) and a no therapy control group (n = 15).Quality of life was not an outcome measure in this RCT, and no numerical data or statistical analysis were presented in this paper. A significant reduction in the frequency and severity of hyperventilation attacks in the breathing exercise group compared with the control group was reported. In addition, a significant difference in frequency and severity of hyperventilation attacks between the breathing and relaxation group was reported. However, no information could be extracted from the paper regarding the size of the treatment effects. AUTHORS' CONCLUSIONS: The results of this systematic review are unable to inform clinical practice, based on the inclusion of only one small, poorly reported RCT. There is no credible evidence regarding the effectiveness of breathing exercises for the clinical symptoms of DB/HVS. It is currently unknown whether these interventions offer any added value in this patient group or whether specific types of breathing exercise demonstrate superiority over others. Given that breathing exercises are frequently used to treat DB/HVS, there is an urgent need for further well designed clinical trials in this area. Future trials should conform to the CONSORT statement for standards of reporting and use appropriate, validated outcome measures. Trial reports should also ensure full disclosure of data for all important clinical outcomes.

Author(s): 
Jones, Mandy
Harvey, Alex
Marston, Louise
O'Connell, Neil E.
Item Type: 
Journal Article
Publication Title: 
The Cochrane Database of Systematic Reviews
Journal Abbreviation: 
Cochrane Database Syst Rev
Publication Date: 
5/31/2013
Publication Year: 
2013
Pages: 
CD009041
Issue: 
5
ISSN: 
1469-493X
DOI: 
10.1002/14651858.CD009041.pub2
Library Catalog: 
PubMed
Extra: 
PMID: 23728685

Turabian/Chicago Citation

Mandy Jones, Alex Harvey, Louise Marston and Neil E. O'Connell. 5/31/2013. "Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults." The Cochrane Database of Systematic Reviews 5: CD009041. 10.1002/14651858.CD009041.pub2.

Wikipedia Citation

<ref> {{Cite journal | doi = 10.1002/14651858.CD009041.pub2 | issn = 1469-493X | volume = | pages = CD009041 | last = Jones | first = Mandy | coauthors = Harvey, Alex, Marston, Louise, O'Connell, Neil E. | title = Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults | journal = The Cochrane Database of Systematic Reviews | date = 5/31/2013 | pmid = | pmc = }} </ref>