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Abstract: Poster Presentations |

Evolution of Hemorrhagic Post-coronary artery bypass Graft Pleural Effusions FREE TO VIEW

Ioannis T. Kalomenidis, MD; Yubiao Guo, MD; Michael Hawthorne, MD; Randal Barnette, RRT; Kenneth B. Parkes, student; R Michael Rodriguez, MD, FCCP; Richard W. Light, MD, FCCP
Author and Funding Information

Department of Pulmonary Medicine, St Thomas Hospital, Department of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University, Nashville, TN


Chest


Chest. 2003;124(4_MeetingAbstracts):219S. doi:10.1378/chest.124.4_MeetingAbstracts.219S
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Abstract

PURPOSE:  Coronary artery bypass graft (CABG) is among the most common cause of pleural effusions (PEs) in the western countries. When they first appear, post-CABG PEs are often bloody and contain high numbers of eosinophils. The aim of the present study was to examine the evolution of the cellular features of post-CABG PEs. We hypothsized that the red blood cells (RBCs) and the percentage of the eosinophils (E%) will decrease while the percentage of the lymphocytes (L%) will increase.

METHODS:  We retrospectively examined 47 patients with unilateral and 2 patients with bilateral post-CABG PEs (totally 49 PEs) who had undergone more than one thoracentesis. Two thoracenteses had been performed in 41 PEs and 3-8 thoracenteses in 8 PEs.

RESULTS:  In the group with 2 serial samples, the RBC increased in 9, remained stable in 1 and fell in 31(p<0.05); the E% increased in 17, remained stable in 2 and fell in 10 (p>0.05); the L% increased in 26 remained stable in 2 and fall in 12 (p>0.05). In the group with more than 2 serial samples, a fluctuation for all the examined features was observed. When we compared the features form the first and the last sample, the RBC increased in 1 and fell in 7; the E% increased in 3 and fell in 4; the L% increased in 7 remained stable in 3 and fell in 4.

CONCLUSION:  In symptomatic post-CABG PEs the RBCs tend to fall while the E% and L% tend to rise but there is much inter-individual variation.

CLINICAL IMPLICATIONS:  In patients with recurring post-CABG PE, pleural fluid values should not be obtained, unless there is a clinical suspicion of other processes.

DISCLOSURE:  I.T. Kalomenidis, None.

Wednesday, October 29, 2003

12:30 PM - 2:00 PM


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