Chronic cough in patients with sleep-disordered breathing

K. K Y Chan, A. J. Ing, L. Laks, G. Cossa, P. Rogers, S. S. Birring

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Chronic cough can be the sole presenting symptom for patients with obstructive sleep apnoea. We investigated the prevalence, severity and factors associated with chronic cough in patients with sleep-disordered breathing (SDB). We invited 108 consecutive patients who had been referred for evaluation of SDB to complete a comprehensive questionnaire on respiratory and sleep health, which included the Leicester Cough Questionnaire (cough specific quality of life; LCQ), Epworth Sleepiness Scale (ESS) and the Mayo Clinic gastro-oesophageal questionnaire. Chronic cough was defined as cough for a duration of >2 months. 33% of patients with SDB reported a chronic cough. Patients with a chronic cough had impaired cough related-quality of life affecting all health domains (mean±SEM LCQ score 17.7±0.7; normal=21). Patients with SDB and chronic cough were predominantly females (61% versus 17%; p<0.001) and reported more nocturnal heartburn (28% versus 5%; p=0.03) and rhinitis (44% versus 14%; p=0.02) compared to those without SDB. There were no significant differences in ESS, respiratory disturbance index, body mass index, or symptoms of breathlessness, wheeze, snoring, dry mouth and choking between those with cough and those without. Chronic cough is prevalent in patients with SDB and is associated with female sex, symptoms of nocturnal heartburn and rhinitis. Further studies are required to investigate the impact of continuous positive airway pressure therapy on cough associated with SDB to explore the mechanism of this association. Copyright

Original languageEnglish
Pages (from-to)368-372
Number of pages5
JournalEuropean Respiratory Journal
Volume35
Issue number2
DOIs
Publication statusPublished - Feb 2010
Externally publishedYes

Keywords

  • Chronic cough
  • Leicester cough questionnaire
  • Respiratory disturbance index
  • Sleep-disordered breathing
  • Visual analogue scale

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