Revista paulista de pediatria : orgao oficial da Sociedade de Pediatria de Sao Paulo · 2014
[Clinical, laboratorial and radiographic predictors of Bordetella pertussis infection].
СтатьяНазвание и аннотация: Перевод в очереди
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Bellettini Camila Vieira, de Oliveira Andressa Welter, Tusset Cintia, Baethgen Ludmila Fiorenzano, Amantéa Sérgio Luís, Motta Fabrizio, Gasparotto Aline, Andreolla Huander Felipe, Pasqualotto Alessandro C
Аннотация
OBJECTIVE:: To identify clinical, laboratorial and radiographic predictors for Bordetella pertussis infection.
METHODS:: This was a retrospective study, which analyzed medical records of all patients submitted to a molecular dignosis (qPCR) for B. pertussis from September 2011 to January 2013. Clinical and laboratorial data were reviewed, including information about age, sex, signs/symptoms, length of hospitalization, blood cell counts, imaging findings, coinfection with other respiratory pathogens and clinical outcome.
RESULTS:: 222 cases were revised. Of these, 72.5% had proven pertussis, and 60.9% were under 1 year old. In patients aging up to six months, independent predictors for B. pertussis infection were (OR 8.0, CI 95% 1.8-36.3; p=0.007) and lymphocyte count >104/µL (OR 10.0, CI 95% 1.8-54.5; p=0.008). No independent predictors of B. pertussis infection could be determined for patients older than six months. Co-infection was found in 21.4% of patients, of which 72.7% were up to six months of age. Adenovirus was the most common agent (40.9%). In these patients, we were not able to identify any clinical features to detect patients presenting with a respiratory co-infection, even though longer hospital stay was observed in patients with co-infections (12 vs. 6 days; p=0.009).
CONCLUSIONS:: Cyanosis and lymphocytosis are independent predictors for pertussis in children up to 6 months old.
METHODS:: This was a retrospective study, which analyzed medical records of all patients submitted to a molecular dignosis (qPCR) for B. pertussis from September 2011 to January 2013. Clinical and laboratorial data were reviewed, including information about age, sex, signs/symptoms, length of hospitalization, blood cell counts, imaging findings, coinfection with other respiratory pathogens and clinical outcome.
RESULTS:: 222 cases were revised. Of these, 72.5% had proven pertussis, and 60.9% were under 1 year old. In patients aging up to six months, independent predictors for B. pertussis infection were (OR 8.0, CI 95% 1.8-36.3; p=0.007) and lymphocyte count >104/µL (OR 10.0, CI 95% 1.8-54.5; p=0.008). No independent predictors of B. pertussis infection could be determined for patients older than six months. Co-infection was found in 21.4% of patients, of which 72.7% were up to six months of age. Adenovirus was the most common agent (40.9%). In these patients, we were not able to identify any clinical features to detect patients presenting with a respiratory co-infection, even though longer hospital stay was observed in patients with co-infections (12 vs. 6 days; p=0.009).
CONCLUSIONS:: Cyanosis and lymphocytosis are independent predictors for pertussis in children up to 6 months old.