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Related Experiment Videos

Exudative effusions in congestive heart failure.

Alain A Eid1, Jean I Keddissi, Michel Samaha

  • 1Departments of Pulmonary and Critical Care Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA. Hammoun@aol.com

Chest
|November 12, 2002
PubMed
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Exudative pleural effusions in congestive heart failure (CHF) patients are rare. Most exudates have noncardiac causes, with coronary artery bypass graft (CABG) history indicating lymphatic impairment.

Area of Science:

  • Pulmonology
  • Cardiology
  • Internal Medicine

Background:

  • Pleural effusions in congestive heart failure (CHF) are typically transudates.
  • Exudative effusions in CHF patients without apparent cause are uncommon.
  • Understanding the incidence and significance of these exudates is crucial.

Purpose of the Study:

  • To determine the incidence of exudative pleural effusions in patients with congestive heart failure.
  • To investigate the clinical significance and potential causes of these exudates.
  • To differentiate CHF-related exudates from those with other etiologies.

Main Methods:

  • Retrospective review of 770 patients with CHF and effusions from 1994-2000.
  • Analysis of thoracentesis results for 175 patients.

Related Experiment Videos

  • Evaluation of medical records for presenting symptoms, clinical course, and etiology of effusions.
  • Assessment of red blood cell (RBC) contamination impact on pleural fluid lactate dehydrogenase (LDH).

    • Main Results:

    • Of 175 patients with thoracentesis, 89 had exudates.
    • Noncardiac causes identified in 66 patients; 12 had potential CHF-related exudates.
    • Four of these 12 exudates were explained by RBC contamination.
    • Patients with coronary artery bypass graft (CABG) surgery showed a high frequency of exudates.
    • Clinical presentation of exudative effusions was similar to transudates.

    Conclusions:

    • Noncardiac causes are the most frequent reason for exudative pleural effusions in CHF patients.
    • A history of CABG surgery suggests impaired lymphatic clearance from the pleural cavity.
    • True exudative effusions solely due to CHF are rare.