Prevalence of chronic obstructive pulmonary disease (COPD) among rheumatoid arthritis: results from national inpatient database.

Rheumatoid arthritis (RA) is being increasingly recognized as an important contributor to chronic obstructive pulmonary disease (COPD). Although smoking is a major risk factor, other factors may play a role. We used National Inpatient Sample (NIS) from 2013 to explore this relationship.

Right atrial appendage aneurysm: a systematic review.

Background: Right atrial appendage aneurysm (RAAA) is rare with fewer than 20 cases reported in the literature. We sought to systematically review the published cases of RAAA in terms of demographics, clinical characteristics, treatment, complications, and outcome.

Methodology: Electronic search for case reports, case series, and related articles published until July 2013 was carried out and clinical data were extracted and analyzed.