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