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  • Title: [Prediction of ineffective outcome of surgical treatment for constrictive pericarditis].
    Author: Matsubara H, Beppu S, Koyama J, Nagata S, Kawazoe K, Kitou Y, Miyatake K.
    Journal: J Cardiol; 1995 Feb; 25(2):89-94. PubMed ID: 7897612.
    Abstract:
    The preoperative factors predicting the outcome of surgical treatment for constrictive pericarditis were investigated in 22 patients with constrictive pericarditis who underwent pericardiectomy. The NYHA functional class was improved in nine patients after surgery (improved group), but not in the other 13 patients (unimproved group). Preoperative right and left heart catheterization data and echocardiograms were compared between these two groups. Right atrial pressure (RAP) and pulmonary capillary wedge pressure (PCWP) were significantly higher in the unimproved group. The left atrial diameter (LAD) measured by echocardiography was significantly greater in the unimproved group. These results indicate that pericardiectomy will cause a worsened immediate outcome in patients with severe pericardial constriction. LAD was the most useful parameter in predicting the ineffectiveness of the pericardiectomy. If the borderline value of LAD is taken as 40 mm, the sensitivity and specificity predicting ineffective surgery were 92% and 89%, respectively. RAP and PCWP could not separate the two groups satisfactorily. Pericardiectomy should be performed before the pericardial constriction progresses, and before LAD reaches 40 mm.
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