P1836Constrictive pericarditis after open heart surgery: a 20-year case controlled study

Abstract Background Constrictive pericarditis (CoPe) after open-heart surgery (OHS) is a rare complication. Information on the incidence, determinants, and prognosis of this condition has been scarcely reported. Purpose To investigate the long term prognosis of CoPe after OHS. Methods Using the Myocardial Infarction Data Acquisition System database, we analyzed records of 144,902 patients that had OHS in New Jersey hospitals between 1995 and 2015. CoPe was identified in 79 patients after discharge. Differences in proportions were analyzed using chi square. Cases and controls were matched for demographics and comorbidities. Cox proportional hazard models were used to evaluate outcome risks. Log-rank test was used to assess differences in the Kaplan-Meier survival curves. Results Patients with CoPe were more likely to have history of valve disease (HVD) (p