It is common for us to encounter patients suffering from dyspnoea who can occasionally obtain subjective relief when they sit near an open window or in front of a fan. In fact, a recent randomised controlled study showed the effectiveness of a handheld fan blowing air across the nose and mouth in reducing the sensation of breathlessness in patients with advanced disease . It has also been reported that, in patients with chronic obstructive pulmonary disease, breathing cold air reduces the sensation of dyspnoea and improves exercise performance . However, the mechanism behind this effect remains unclear.
Olfactory stimulation by L-menthol and dyspnoea http://ow.ly/tL77308wKSS
Support statement: This study was supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (26870760, 23659375, 24300187, 24659397 and 257166), Research Grant for Longevity Sciences from the Ministry of Health, Labor and Welfare (H22-Junkanki-shi-Ippan-001) and Research Funding for Longevity Sciences (22-2) from the National Center for Geriatrics and Gerontology (NCGG). Funding information for this article has been deposited with the Crossref Funder Registry.
Conflict of interest: None declared.
- Received September 18, 2016.
- Accepted December 17, 2016.
- Copyright ©ERS 2017