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
Artículo
en Inglés
| 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:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Potasio
/
Creatinina
/
Leptospirosis
Tipo de estudio:
Estudio de etiología
/
Estudio observacional
/
Estudio pronóstico
Límite:
Adolescente
/
Adulto
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Rev. Inst. Med. Trop. Säo Paulo
Asunto de la revista:
Medicina Tropical
Año:
2001
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Hospital Couto Maia/BR
/
Universidade Federal da Bahia/BR
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