title: Occurrence of postpericardiotomy syndrome admissions: A population-based registry study.
abstract: BACKGROUND
  Postpericardiotomy syndrome (PPS) is a common complication after cardiac surgery. Previous epidemiological descriptions of the syndrome, however, are scarce.
  
  
  METHODS
  This retrospective analysis included all patients hospital admission due to PPS in patients aged 20-79 years. Data were collected from the Finnish national registry that included data on all cardiovascular hospital admissions (n = 51 7669) during 9.5 years in 29 Finnish hospitals nationwide.
  
  
  RESULTS
  There were 760 hospital admissions due to PPS during the study period. The patients were more likely male than female (67.8% versus 32.2%) with an age-adjusted RR of 2.37 (95% CI 1.85-3.02) for men (p < 0.0001). When evaluating the rate of PPS in relation to cardiac surgeries, female gender was associated with a higher incidence of PPS (RR 1.78; 95% CI 1.45-2.19; p < 0.001). The rate of PPS in relation to the number of cardiac surgery was highest in youngest patients followed by a gradual decrease (RR 0.59; 95% CI 0.55-0.65; p < 0.0001 per 10-year increment in age) with aging.
  
  
  CONCLUSIONS
  Hospital admission due to PPS was most common in men in their sixties. When stratified by the total number of performed cardiac operations the incidence of PPS was higher among women and younger patients.
authors.affiliation: a Heart Center, Turku University Hospital , Turku , Finland ;
authors.forename: Joonas
authors.initials: J
authors.lastname: Lehto
authors.affiliation: a Heart Center, Turku University Hospital , Turku , Finland ;|b Department of Internal Medicine , University of Turku , Turku , Finland ;
authors.forename: Tuomas O
authors.initials: TO
authors.lastname: Kiviniemi
authors.affiliation: a Heart Center, Turku University Hospital , Turku , Finland ;|c Department of Surgery , University of Turku , Turku , Finland ;
authors.forename: Jarmo
authors.initials: J
authors.lastname: Gunn
authors.affiliation: d Department of Cardiology , Keski-Suomi Central Hospital , Jyväskylä , Finland ;
authors.forename: Pirjo
authors.initials: P
authors.lastname: Mustonen
authors.affiliation: a Heart Center, Turku University Hospital , Turku , Finland ;
authors.forename: Juhani
authors.initials: J
authors.lastname: Airaksinen
authors.affiliation: e Department of Surgery , Oulu University Hospital , Oulu , Finland ;
authors.forename: Fausto
authors.initials: F
authors.lastname: Biancari
authors.affiliation: f Clinical Research Centre, Turku University Hospital , Turku , Finland ;|g Department of Public Health , University of Turku , Turku , Finland ;
authors.forename: Päivi
authors.initials: P
authors.lastname: Rautava
authors.affiliation: h Division of Clinical Neurosciences, Department of Neurology , Turku University Hospital , Turku , Finland ;|i Department of Neurology , University of Turku , Turku , Finland ;
authors.forename: Jussi
authors.initials: J
authors.lastname: Sipilä
authors.affiliation: a Heart Center, Turku University Hospital , Turku , Finland ;|b Department of Internal Medicine , University of Turku , Turku , Finland ;|j Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku , Turku , Finland.
authors.forename: Ville
authors.initials: V
authors.lastname: Kytö
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D006348:Cardiac Surgical Procedures / Q000009:adverse effects / Q000706:statistics & numerical data*; D005260:Female; D005387:Finland / Q000453:epidemiology; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010496:Pericardium / Q000473:pathology / Q000601:surgery; D011185:Postpericardiotomy Syndrome / Q000453:epidemiology* / Q000503:physiopathology; D012042:Registries; D012189:Retrospective Studies; D017678:Sex Distribution
keywords: Aging; epidemiology; pericardium; sex; thoracic surgery