The association between serum potassium at hospital admission and the case-fatality rate of leptospirosis in men
Rev. Inst. Med. Trop. Säo Paulo
;
43(4): 217-220, Aug. 2001. tab
Artigo
em Inglês
| LILACS
| ID: lil-298686
RESUMO
Severe leptospirosis affects predominantly males and presents a high susceptibility to hypokalemic acute renal failure. As hypokalemia and hyperkalemia induce severe complications, it is important to evaluate if the initial serum potassium is an independent risk factor for death in leptospirosis. The medical records of 1016 patients hospitalized with the diagnosis of leptospirosis were reviewed. The analysis was restricted to 442, according to the following criteria male, 18 years or older, information about death or hospital discharge and recorded values of serum potassium, serum creatinine and duration of symptoms at admission. Potassium values lower than 3.5 mEq/L (hypoK), 3.5-5 mEq/L (normoK) and above 5 mEq/L (hyperK) were detected in 180, 245 and 17 patients, respectively. The death rate increased with serum potassium 11.1 percent in the hypoK, 14.7 percent in the normoK and 47.1 percent in the hyperK group (p = 0.002). In a logistic regression model (normoK as referent), including age, creatinine and duration of symptoms, hypoK was not associated with increased death rate (odds ratio (OR) = 0.80; p > 0.1). On the other hand, hyperK showed a significant association with increased risk of death (OR = 3.95, p = 0.021). In conclusion, in this sample of men with leptospirosis initial serum potassium was positively and independently correlated with the risk of in-hospital death
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Potássio
/
Creatinina
/
Leptospirose
Tipo de estudo:
Estudo de etiologia
/
Estudo observacional
/
Estudo prognóstico
Limite:
Adolescente
/
Adulto
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Rev. Inst. Med. Trop. Säo Paulo
Assunto da revista:
Medicina Tropical
Ano de publicação:
2001
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Hospital Couto Maia/BR
/
Universidade Federal da Bahia/BR
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