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Clinical Investigations: CARDIAC SURGERY |

Clinical and Echocardiographic Characteristics of Significant Pericardial Effusions Following Cardiothoracic Surgery and Outcomes of Echo-Guided Pericardiocentesis for Management*: Mayo Clinic Experience, 1979–1998

Teresa S. M. Tsang, MD; Marion E. Barnes, MS; Sharonne N. Hayes, MD; William K. Freeman, MD; Joseph A. Dearani, MD; Sara L. Osborn Butler; James B. Seward, MD
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*From the Divisions of Cardiovascular Diseases and Internal Medicine (Drs. Tsang, Hayes, Freeman, and Seward, and Mss. Barnes and Osborn Butler) and Thoracic and Cardiovascular Surgery (Dr. Dearani), Mayo Clinic and Mayo Foundation, Rochester, MN.

Correspondence to: Teresa S. M. Tsang, MD, Mayo Clinic, 200 First St, SW, Rochester, MN 55905



Chest. 1999;116(2):322-331. doi:10.1378/chest.116.2.322
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Study objectives: This study assessed the clinical features, timing of presentation, and echocardiographic characteristics associated with clinically significant pericardial effusions after cardiothoracic surgery. The outcomes of echocardiographically (echo-) guided pericardiocentesis for the management of these effusions were evaluated.

Design: From the prospective Mayo Clinic Registry of Echo-guided Pericardiocentesis (February 1979 to June 1998), 245 procedures performed for clinically significant postoperative effusions were identified. Clinical features, effusion causes, echocardiographic findings, and management outcomes were studied and analyzed. Cross-referencing the registry with the Mayo Clinic surgical database provided an estimate of the incidence of significant postoperative effusions and the number of cases in which primary surgical management was chosen instead of pericardiocentesis.

Results: Use of anticoagulant therapy was considered a significant contributing factor in 86% and 65% of early effusions (≤ 7 days after surgery) and late effusions (> 7 days after surgery), respectively. Postpericardiotomy syndrome was an important factor in the development of late effusions (34%). Common presenting symptoms included malaise (90%), dyspnea (65%), and chest pain (33%). Tachycardia, fever, elevated jugular venous pressure, hypotension, and pulsus paradoxus were found in 53%, 40%, 39%, 27%, and 17% of cases, respectively. Transthoracic echocardiography permitted rapid diagnosis and hemodynamic assessment of all effusions except for three cases that required transesophageal echocardiography for confirmation. Echo-guided pericardiocentesis was successful in 97% of all cases and in 96% of all loculated effusions. Major complications (2%), including chamber lacerations (n = 2) and pneumothoraces (n = 3), were successfully treated by surgical repair and chest tube reexpansion, respectively. Median follow-up duration for the study population was 3.8 years (range, 190 days to 16.4 years). The use of extended catheter drainage was associated with reduction in recurrence for early and late postoperative effusions by 46% and 50%, respectively.

Conclusions: The symptoms and physical findings of clinically significant postoperative pericardial effusions are frequently nonspecific and may be inadequate for a decision regarding intervention. Echocardiography can quickly confirm the presence of an effusion, and pericardiocentesis under echocardiographic guidance is safe and effective. The use of a pericardial catheter for extended drainage is associated with lower recurrence rates, and the majority of patients so treated do not require further intervention.

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