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Pleural Effusion after Ventricular Assist Device Placement: Prevalence and Pleural Fluid Characteristics

¹Interventional Pulmonary, Baylor College of Medicine, Houston, TX ²Micheal E. DeBakey Department of Cardiovascular and Thoracic Surgery, Baylor College of Medicine, Houston, TX

wlunn{at}bcm.tmc.edu

Abstract

Background: Occurrence of pleural effusion after VAD implantation has been described, however, little has been elucidated about their nature, prevalence or characteristics. Our study details the prevalence of pleural effusion and pleural fluid characteristics in VAD patients at our institution.

Methods: We conducted a review of 22 consecutive patients undergoing VAD placement from August 2004 to January 2006. The clinical course of pleural effusions and their biochemical characteristics were studied by reviewing the patient charts and radiographs.

Results: Six of the 22 patients (18%) had pleural effusion before VAD placement. All 22 patients had effusions post VAD placement, with the majority being left sided (23%) or bilateral with left sided predominance (41%). Four patients had large effusion, nine had moderate sized effusion, and nine had small effusion. Nine patients (41%) required thoracentesis to relieve dyspnea. All were noted to have blood tinged pleural fluid and removal resulted in relief of dyspnea and improvement of clinical status. Seven patients had their pleural fluid examined in detail and all met criteria for an exudate. No complications were experienced from thoracentesis.

Conclusions: Though pleural effusion is commonly seen in patients after VAD placement, this is the first study to examine the effusions in detail. In our series, all patients developed pleural effusions and most were either on the left side or bilateral. Those sampled were exudative in nature, blood tinged and lymphocyte predominant. Drainage resulted in improvement in symptoms and was accomplished without complications.

Key Words: CHF • Pleural Effusion • Thoracic Surgery • Ultrasound