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C-reactive protein levels in patients with chronic obstructive pulmonary disease: role of infection
Medical Principles and Practice. 2008; 17 (3): 202-208
em Inglês | IMEMR | ID: emr-104576
ABSTRACT
To investigate the value of C-reactive protein [CRP] as a marker of chronic obstructive pulmonary disease [COPD] exacerbations or specifically bacterial exacerbations and to evaluate a correlation between raised CRP levels and other markers of inflammation in patients with an acute exacerbation [AECOPD]. The medical records of patients with AECOPD were retrospectively analyzed. They were categorized according to the nature of sputum as mucoid or purulent and to the findings on chest radiographs as with pneumonia [PCOPD] or without pneumonia. Stable COPD [SCOPD] patients and a group of asymptomatic nonsmokers were also included in the study. All COPD patients [SCOPD 30; AECOPD 51; PCOPD 32] and control subjects [30] were male. The mean CRP levels and WBC counts of the groups were PCOPD 108.1 +/- 61.8 mg/l and 13.7 +/- 6.8 x 109/l; AECOPD 36.8 +/- 43.9 mg/l and 11.4 +/- 4.8 x 109/l; SCOPD 3.9 +/- 1.4 mg/l and 7.9 +/- 1.9 x 109/l; control 2.1 +/- 0.9 mg/l and 7.7 +/- 1.1 x 109/l. The mean CRP level of AECOPD was statistically different from those of PCOPD and SCOPD [p = 0.0001, p = 0.002, respectively]. The sensitivity and specificity of CRP to determine an acute exacerbation were 72.5 and 100%, respectively. Among the patients with AECOPD, 25 had purulent sputum and a mean CRP level of 46.4 +/- 48.6 mg/l, which is significantly higher than the CRP level [28.0 +/- 44.5 mg/l] of the 18 patients with mucoid expectoration [p = 0.015]. Among the mucoid-expectorating subgroup, the patients with leukocytosis had significantly higher CRP levels than the patients without leukocytosis [p = 0.034]. A high serum CRP value may indicate an infectious exacerbation in COPD patients and it correlates with sputum purulence and increased serum WBC counts
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Índice: IMEMR (Mediterrâneo Oriental) Assunto principal: Pneumonia / Biomarcadores / Capacidade Vital / Volume Expiratório Forçado / Estudos Retrospectivos / Doença Pulmonar Obstrutiva Crônica Limite: Feminino / Humanos / Masculino Idioma: Inglês Revista: Med. Princ. Pract. Ano de publicação: 2008

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Índice: IMEMR (Mediterrâneo Oriental) Assunto principal: Pneumonia / Biomarcadores / Capacidade Vital / Volume Expiratório Forçado / Estudos Retrospectivos / Doença Pulmonar Obstrutiva Crônica Limite: Feminino / Humanos / Masculino Idioma: Inglês Revista: Med. Princ. Pract. Ano de publicação: 2008