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  • Title: Pattern of pericardial calcification determines mid-term postoperative outcomes after pericardiectomy in chronic constrictive pericarditis.
    Author: Lee YH, Kim SM, Kim EK, Park SJ, Lee SC, Park SW, Jeong DS, Chang SA.
    Journal: Int J Cardiol; 2023 Sep 15; 387():131133. PubMed ID: 37355240.
    Abstract:
    OBJECTIVES: Although pericardiectomy is an effective treatment for constrictive pericarditis (CP), clinical outcomes are not always successful. Pericardial calcification is a unique finding in CP, although the amount and localization of calcification can vary. We investigated how the pattern and amount of pericardial calcification affect mid-term postoperative outcomes after pericardiectomy to treat CP. METHODS: All patients of total pericardiectomy in our hospital from 2010 to 2020 were enrolled. Preoperative Computed tomography (CT) scans of 98 consecutive patients were available and analyzed. Medical records were reviewed retrospectively. Cardiovascular events were defined as cardiovascular death or hospitalization associated with a heart failure symptom, and all-cause events were defined as any event that required admission. CT scans were analyzed, and the volume and localization pattern of peri-calcification were determined. Pericardium calcium scores are presented using Agatston scores. RESULTS: Of the 98 patients, 25 (25.5%) were hospitalized with heart failure symptoms after pericardiectomy. The median follow-up duration for all patients was 172 weeks. The group with a cardiovascular event had a lower calcium score than patients without an event. Multivariate Cox proportional analysis showed that high ln(calcium score+1) before pericardiectomy was a dependent predictor of cardiovascular event (hazard ratio, 0.90; p = 0.04) after pericardiectomy. When we set the cut-off value (ln(calcium score+1) = 7.22), there was a significant difference in cardiovascular events in the multivariate Cox proportional analysis (p = 0.04). CONCLUSION: A low burden of pericardial calcification was associated with a high rate of mid-term clinical events after pericardiectomy to treat CP.
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