Journals / Toraks Dergisi / 2001 / Cilt: 2 - Sayı: 1

A comparative analysis of light's criteria and several biochemical parameters in the differentiation of pleural effusions as exudate and transudate

Plevral efüzyonların eksüda-transüda ayrımında light kriterleri ve çeşitli biyokimyasal parametrelerin karşılaştırmalı analizi

Pages
34–39
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

In conclusion, Light's criteria may be insufficient for differentiating transudates from exudates, especially in patients taking a diuretic.

📌 3 Key Takeaways

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Objective & Hypothesis:We examined the pleural liquid and serum samples of 79 patients with pleural effusion of well defined etiology to determine the efficacy of the Light's criteria and several biochemical parameters for differentrating pleural exudate and transudate.
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Key Findings & Data:Based on the etiologic diagnosis, 62 patients had pleural effusions classified as transudate and 17 patients had pleural effusions classified as exudate.
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Conclusion & Impact:In conclusion, Light's criteria may be insufficient for differentiating transudates from exudates, especially in patients taking a diuretic.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Plevral efüzyon · Duyarlılık ve özgüllük · Kolesterol

Abstract

We examined the pleural liquid and serum samples of 79 patients with pleural effusion of well defined etiology to determine the efficacy of the Light's criteria and several biochemical parameters for differentrating pleural exudate and transudate. Based on the etiologic diagnosis, 62 patients had pleural effusions classified as transudate and 17 patients had pleural effusions classified as exudate. Sensitivity and specificity for Light's criteria were 100% and 56%, respectively; for pleural fluid cholesterol, 89% and 100%; for the pleural fluid/serum cholesterol ratio, 95% and 93%; for the albumin gradient between serum and pleural effusion, 84% and 94%. In seven patients taking diuretics, transudative pleural effusions were falsely classified as exudates accordig to Light's criteria. The best results with combinations of several biochemical parameters were achieved when the pleural fluid cholesterol was combined with pleural fluid/serum LDH ratio or pleural fluid/serum protein ratio (sensitivity; 100%, specificity; 100%). In conclusion, Light's criteria may be insufficient for differentiating transudates from exudates, especially in patients taking a diuretic. In these situations, albumin gradient between serum and pleural fluid, pleural fluid cholesterol measurement and the combined use of several biochemical parameters may help clinicians.

Özet

Plevral efüzyonların eksüda-transüda ayrımında Light kriterleri ve çeşitli biyokimyasal parametrelerin etkinliğini saptamak amacıyla kesin tanılı 79 plevral efüzyonlu hastanın plevra sıvısı ve serum örnekleri incelendi. Plevral efüzyon, etiyolojilerine göre 62 hastada eksüda, 17 hastada ise transüda olarak sınıflandı. Light kriterleri için duyarlılık %100, özgüllük %56; plevra sıvısında kolesterol için duyarlılık %89, özgüllük %100; plevra sıvısı/serum kolesterol oranı için duyarlılık %95, özgüllük %93; serum-plevra sıvısı albümin gradyantı için duyarlılık %84, özgüllük %94 olarak saptandı. Diüretik kullanan yedi hastada transüdatif plevral efüzyon, Light kriterlerine göre yanlış bir şekilde eksüda olarak sınıflandırıldı. Değişik biyokimyasal parametrelerin birlikteliğinde en iyi sonuçlar, plevra sıvısı kolesterol ölçümü ile plevra sıvısı/serum LDH oranı veya plevra sıvısı/serum protein oranı kombine edildiğinde sağlandı (duyarlılık %100, özgüllük %100). Sonuç olarak, özellikle diüretik kullanan hastalarda Light kriterleri transüda-eksüda ayrımında yetersiz kalabilir. Bu durumlarda serum-plevra sıvısı albümin gradyantı, plevral sıvı kolesterol ölçümü ile birlikte çeşitli biyokimyasal parametrelerin kombine kullanımı klinisyene yardımcı olabilir.

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Cite This Article

ALTIAY, G., HATİPOĞLU, O. N., KARLIKAYA, C., ALP, A. İ., ÇAĞLAR, T. (2001). A comparative analysis of light's criteria and several biochemical parameters in the differentiation of pleural effusions as exudate and transudate. Toraks Dergisi, Cilt: 2 - Sayı: 1, 34–39. https://ajindex.com/articles/368018

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