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Iatreia ; 26(3): 356-365, jul.-sept. 2013. tab
Article in Spanish | LILACS, COLNAL | ID: lil-683024

ABSTRACT

Introducción: se describen los casos de dos pacientes con fibrosis quística (FQ) con alcalosis metabólica hipoclorémica: uno con diagnóstico de novo y otro con una recaída. Casos clínicos: pacientes de 6 y 9 meses que consultan por tos, fiebre y disnea. El primero con síndrome bronco-obstructivo recurrente (SBOR), el segundo con FQ conocida. Examen físico: dificultad respiratoria, deshidratación y desnutrición. Gasometría: alcalosis metabólica, hipokalemia e hipocloremia graves. Se tratan con cloruro de sodio y potasio. Hay mejoría del desequilibrio electrolítico y del estado ácido-base. No se documentan pérdidas renales o gastrointestinales de cloro y se diagnostica síndrome pseudo-Bartter. Los electrólitos en sudor de ambos pacientes son elevados. Se diagnostica alcalosis metabólica por FQ. Conclusión: la alcalosis metabólica puede ser la manifestación inicial en niños con SBOR y talla baja con sospecha de FQ; igualmente puede hacer parte de una exacerbación aguda en pacientes conocidos con FQ. Con su reconocimiento y tratamiento oportunos disminuye la morbilidad.


Introduction: We describe the cases of two patients with hypochloremic metabolic alkalosis either as the initial presentation of cystic fibrosis (case 1) or as part of a second cystic fibrosis exacerbation (case 2). Clinical cases: Two patients, 6 and 9 months old, were brought to the hospital because of cough, fever, and dyspnea. The first had a syndrome of recurrent bronchial obstruction, without the diagnosis of CF on admission. Both presented with difficulty for breathing, dehydration, and malnutrition. Arterial blood gases showed metabolic acidosis, hypokalemia, and severe hypochloremia. Treatment with sodium chloride and potassium improved their electrolyte balance and acid-base status. They did not have renal or gastrointestinal losses of chloride. CF and pseudo-Barter's syndrome were diagnosed. Conclusion: Metabolic alkalosis can be the initial manifestation of CF in infants with recurrent bronchiolitis and short stature suspicious of having CF. It can also be the expression of an acute exacerbation in patients with known CF. Opportune diagnosis and treatment are important to decrease morbidity.


Subject(s)
Male , Female , Infant , Cystic Fibrosis , Alkalosis , Genetic Diseases, Inborn
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