INTRODUCTION: @entity3928 between @entity27 ( @entity68174 ) and @entity1030 ( @entity1030 ) is important but under-recognised. We aimed to determine the prevalence of @entity3928 and the predictors of @entity68174 in @entity1 with @entity1030 . METHODS: @entity1 aged >=  40 years were recruited from a dedicated @entity1030 clinic and underwent overnight polysomnography. A diagnosis of @entity68174 was made when apnoea-hypopnoea index (AHI) was >=  5. RESULTS: In all, 22 @entity1 (aged 71    9 years), predominantly @entity1 , were recruited. Mean values recorded were: predicted forced expiratory volume in the first second percentage 55    15; body mass index 23.7    6.5 kg/m2; Epworth Sleepiness Scale score 5.6    5.8; and AHI 15.8    18.6. Among the 14 @entity1 with @entity68174 (prevalence of @entity3928 at 63.6%), the mean number of hospital visits for @entity1030 exacerbations in the preceding one year was 0.5    0.7. @entity1 with @entity3928 had worse modified Medical Research Council dyspnoea scale scores and a lower percentage of rapid eye movement (REM) sleep than @entity1 without. There were no other statistical differences in lung function or sleep study indices between the two @entity1 groups. CONCLUSION: The majority of our @entity1 had @entity3928 and minimal exacerbations, and were not obese or sleepy. Significant differences between @entity1 with and without @entity3928 were seen in two aspects - the former was more dyspnoeic and had less REM sleep. Our findings suggest that standard clinical predictors cannot be used for @entity1 with @entity3928 , and therefore, a high index of suspicion is needed.

XXXX between @entity1030 and @entity27 in a Southeast Asian teaching hospital.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'patient', 'men'] @entity3928 :: ('MESH:C536030', 'Disease') :: ['Overlap syndrome', 'overlap syndrome'] @entity68174 :: ('MESH:C566951', 'Disease') :: ['OSA'] @entity27 :: ('MESH:D020181', 'Disease') :: ['obstructive sleep apnoea'] @entity1030 :: ('MESH:D029424', 'Disease') :: ['chronic obstructive pulmonary disease', 'COPD']
@entity3928 :: (MESH:C536030,Disease) :: ['Overlap syndrome']
