RESUMEN
Presentamos el caso de un lactante menor de sexo masculino que ingresó al servicio de medicina II, del hospital Pediátrico Dr. Francisco de Ycaza Bustamante, Guayaquil, Ecuador, con diagnóstico de acidosis tubular renal considerada como un trastorno en la reabsorción de bicarbonato en los túbulos renales distales, cuya etiología puede ser primaria o secundaria a trastornos autoinmunitarios, así como a medicamentos y toxinas. Su diagnóstico se fundamenta en criterios clínicos y exámenes de laboratorio.
This is the case of a male infant younger tan 6 months old that was admitted to the Medicine II Service of the children hospital Dr. Francisco de Ycaza Bustamante, Guayaquil, Ecuador, diagnosed renal tubular acidosis which is regarded as a disorder in the bicarbonate reabsorption in the distal renal tubules which etiology can be primary or secondary to autoimmune disorders, as well as to medicines and toxins. Its diagnosis is based on clinical criteria and laboratory tests.