Derrame pleural é uma síndroma frequente no Brasil. Tuberculose é a causa mais prevalente (P). O coeficiente de variação (CV) é uma medida simples e útil de dispersão relativa. O objectivo deste trabalho foi calcular o coeficiente de variação da idade dos pacientes com síndroma de derrame pleural. Procedimentos e exames que esclarecessem a causa de síndroma do derrame pleural foram realizados em 215 pacientes. Tuberculose (P=56,0%; CV=39,7%), adenocarcinoma (P=11,0%; CV=25,1), transudatos (12,0%; CV=19,6), enfarte pulmonar (P=4,0%), linfomas (P=2,0%; CV=34,6%), empiema pleural não tuberculoso (P=5,0%; CV=42,2%), derrame pleural parapneumónico (P=4,0%; CV=38,9%) e lúpus eritematoso sistémico (P=2,0%; CV=38,7%) foram as causas mais prevalentes. Concluiu-se que os coeficientes de variação da idade dos pacientes com as causas mais prevalentes de síndroma de derrame pleural, na casuística estudada, são médios e muito altos. Os valores encontrados traduzem um alto grau de dispersão da idade dos pacientes com as causas mais prevalentes de síndroma de derrame pleural.
REV PORT PNEUMOL 2003; IX (5): 389-393
Pleural effusion is a frequent syndrome in Brazil. Tuberculosis is the most prevalent (P) cause. The coeficient of variation (CV) is a useful single measure of variability. The objective of the present work was to evaluate the coeficient of variation in pleural effusion, having as variable the age. 215 patients had appeared after diagnostic physician and for image of syndrome of pleural effusions. Diagnostic thoracentesis, tests on pleural fluid and others invasise surgical procedures to the approach to a patient with pleural effusion. Tuberculosis (P=56.0%; CV=39,7%), adenocarcinoma (P=11.0%; CV=25.1%), transudates (P=12.0%; CV=19.6%), lymphomas (P=2.0%; CV=34.6%), systemic lupus erythematosus (P=2.0%; CV=38.7%), empyema pleural not tuberculosis (P=5.0%; CV=42.2%), pulmonary infarction (P=4.0 %; CV=30.1%) and parapneumonic (P=4.0 %; CV=38.9%) are the causes more prevalent. The analysis on the date showed that the coefficient of variation of age in pleural effusions was high and very high. The values of the coeficient of variation translate a high degree of dispersion of the age of the patients in each cause of pleural effusion.
REV PORT PNEUMOL 2003; IX (5): 389-393
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