• Chest · Feb 2020

    The Relationship of Pleural Manometry with Post-Thoracentesis Chest Radiographic Findings in Malignant Pleural Effusion.

    • Amit Chopra, Marc A Judson, Peter Doelken, Fabien Maldonado, Najib M Rahman, and John T Huggins.
    • Department of Medicine, Division of Pulmonary and Critical Care Medicine, Albany Medical Center, Albany, NY. Electronic address: chopraa1@mail.amc.edu.
    • Chest. 2020 Feb 1; 157 (2): 421-426.

    BackgroundBoth elevated pleural elastance (E-PEL) and radiographic evidence of incomplete lung expansion following thoracentesis have been used to exclude patients with a malignant pleural effusion (MPE) from undergoing pleurodesis. This article reports on a cohort of patients with MPE in whom complete drainage was attempted with pleural manometry to determine the frequency of E-PEL and its relation with postthoracentesis radiographic findings.MethodsSeventy consecutive patients with MPE who underwent therapeutic pleural drainage with pleural manometry were identified. The pressure/volume curves were constructed and analyzed to determine the frequency of E-PEL and the relation of PEL to the postthoracentesis chest radiographic findings.ResultsE-PEL and incomplete lung expansion were identified in 36 of 70 (51.4%) and 38 of 70 (54%) patients, respectively. Patients with normal PEL had an OR of 6.3 of having complete lung expansion compared with those with E-PEL (P = .0006). However, 20 of 70 (29%) patients exhibited discordance between postprocedural chest radiographic findings and the pleural manometry results. Among patients who achieved complete lung expansion on the postdrainage chest radiograph, 9 of 32 (28%) had an E-PEL. In addition, PEL was normal in 11 of 38 (34%) patients who had incomplete lung expansion as detected according to the postthoracentesis chest radiograph.ConclusionsE-PEL and incomplete lung expansion postthoracentesis are frequently observed in patients with MPE. Nearly one-third of the cohort exhibited discordance between the postprocedural chest radiographic findings and pleural manometry results. These findings suggest that a prospective randomized trial should be performed to compare both modalities (chest radiograph and pleural manometry) in predicting pleurodesis outcome.Copyright © 2019 American College of Chest Physicians. All rights reserved.

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