Assessment of dyspnoea

Dyspnoea, also known as shortness of breath or breathlessness, is a subjective sensation of breathing discomfort. It is a common symptom, present in up to half of patients admitted to acute, tertiary care hospitals and in one quarter of medical outpatients.[1]Parshall MB, Schwartzstein RM, Adams L, et al; American Thoracic Society Committee on Dyspnea. An official American Thoracic Society statement: update on the mechanisms, assessment, and management of dyspnea. Am J Respir Crit Care Med. 2012 Feb 15;185(4):435-52. http://www.atsjournals.org/doi/full/10.1164/rccm.201111-2042ST http://www.ncbi.nlm.nih.gov/pubmed/22336677?tool=bestpractice.com Dyspnoea accounts for approximately 3.4 million accident and emergency department visits in the US annually. [2]Rui P, Kang K. Centers for Disease Control and Prevention. National Hospital Ambulatory Medical Care Survey: 2014 Emergency Department Summary Tables. 2014 [internet publication]. https://www.cdc.gov/nchs/data/nhamcs/web_tables/2014_ed_web_tables.pdf

There are also multiple sensations of dyspnoea; the best described can be grouped together into:[1]Parshall MB, Schwartzstein RM, Adams L, et al; American Thoracic Society Committee on Dyspnea. An official American Thoracic Society statement: update on the mechanisms, assessment, and management of dyspnea. Am J Respir Crit Care Med. 2012 Feb 15;185(4):435-52. http://www.atsjournals.org/doi/full/10.1164/rccm.201111-2042ST http://www.ncbi.nlm.nih.gov/pubmed/22336677?tool=bestpractice.com

• Sensation of work or effort

• Tightness

• Air hunger/unsatisfied inspiration.

The aetiology of dyspnoea covers a broad range of pathologies from mild, self-limiting processes to life-threatening conditions. Diseases of the cardiovascular, pulmonary, and neuromuscular systems are the most common. Dyspnoea may be acute (e.g., acute exacerbation of congestive heart failure, acute pulmonary embolism, acute heart valve insufficiency), subacute (e.g., worsening asthma, exacerbation of chronic obstructive pulmonary disease [COPD]) or chronic (e.g., stable COPD, stable interstitial lung disease).

The evaluation and management of dyspnoea is directed by the clinical presentation, findings from the history and physical examination, and preliminary investigation results.[3]Berliner D, Schneider N, Welte T, et al. The differential diagnosis of dyspnea. Dtsch Arztebl Int. 2016 Dec 9;113(49):834-45. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5247680 http://www.ncbi.nlm.nih.gov/pubmed/28098068?tool=bestpractice.com