JOHN H.M. AUSTIN, M.D.
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To the editor: Hughson and associates (1) state that postpartum pleural effusions are common, but that a search of the literature failed to yield any other data on their frequency. Such a study was done 30 years ago, when Hessén (2) at the University of Uppsala found that postpartum small pleural effusions were common.
Methodologic differences, however, distinguish the two studies. The interval from delivery to exposure of the radiographs was not the same. The recent study was based on radiographs exposed within 24 hours of delivery (20 of 30 women showed pleural fluid). The earlier study was based on
AUSTIN JH. Postpartum Pleural Effusions. Ann Intern Med. ;98:555–556. doi: 10.7326/0003-4819-98-4-555
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Published: Ann Intern Med. 1983;98(4):555-556.
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