Comparison of the use and accuracy of methods for determining pleural fluid pH.

Abstract:

BACKGROUND:The blood gas analyzer (BGA) has been considered the "gold standard" for pleural fluid pH determination. METHODS:We report the various methods used to measure pleural fluid pH by 277 acute care institutions who responded to a mailed questionnaire. The techniques used included the BGA (32%), dip stick or pH indicator paper (56%), and a pH meter (12%). We tested 36 consecutive exudative pleural fluid samples using each method. RESULTS:The alternative methods were incomparable to accurately measuring pleural fluid pH by the BGA, with a mean difference of 0.16 pH unit. With a delay in testing, the pH of the pleural fluid was more alkalotic and variable, with a mean difference of 0.039 pH unit. CONCLUSIONS:Clinicians should be encouraged to test selected samples for pleural fluid pH by the BGA when accurate measurements will influence therapy.

journal_name

South Med J

journal_title

Southern medical journal

authors

Chandler TM,McCoskey EH,Byrd RP Jr,Roy TM

doi

10.1097/00007611-199902000-00010

subject

Has Abstract

pub_date

1999-02-01 00:00:00

pages

214-7

issue

2

eissn

0038-4348

issn

1541-8243

journal_volume

92

pub_type

杂志文章
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