EVALUATION STUDY
JOURNAL ARTICLE
OBSERVATIONAL STUDY
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Pericardiectomy for Constrictive Pericarditis: 20 Years of Experience at the Montreal Heart Institute.

BACKGROUND: The aim of this study was to evaluate our single-center experience with pericardiectomy for constrictive pericarditis. The main objectives of our analysis were long-term survival, clinical outcome, and identification of risk factors.

METHODS: Over a 20-year period, 99 consecutive patients underwent pericardiectomy at the Montreal Heart Institute. The indications for operation were idiopathic pericarditis (61%), postsurgical (13%), infectious (15%), postirradiation (2%), and miscellaneous (9%). Associated procedures were performed in 36% of cases. The duration of symptoms was longer than 6 months in 53% of cases, and two thirds of patients were in New York Heart Association class III or IV.

RESULTS: Hospital mortality was 9% in the whole series and 7.9% in case of isolated pericardiectomy. The patients operated on within 6 months after the onset of symptoms showed a lower risk of mortality. Conversely, preoperative hepatomegaly and concomitant valvular operation were associated with significantly higher mortality on both univariate and multivariate analysis. In cases of isolated pericardiectomy, the outcome was mainly conditioned by associated comorbidities. The long-term survival was satisfactory, and the functional status at follow-up was improved in most cases.

CONCLUSIONS: The clinical outcome of pericardiectomy for constrictive pericarditis is still marked by high operative mortality. Nevertheless, surgical treatment is able to improve the functional class in the majority of late survivors. Preoperative clinical conditions and associated comorbidities are crucial in predicting the risk of mortality, and early operation seems to be the most appropriate choice. The most suitable surgical strategy in cases of associated valvular operation remains to be determined.

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