Metahemoglobinemia, una entidad de diagnóstico complejo. Reporte de un caso
Rev. méd. Chile
;
148(12)dic. 2020.
Artículo
en Español
| LILACS
| ID: biblio-1389272
ABSTRACT
Methemoglobinemia is a rare condition with serious consequences if not diagnosed. We report the case of a 64-year-old woman with a history of allergy to sulfa drugs and a recent diagnosis of a small vessel vasculitis (ANCA-p) who started induction therapy with corticosteroids and rituximab. Due to the need for infectious prophylaxis, and considering her history, dapsone was administered instead of cotrimoxazole after ruling out glucose-6-phosphate dehydrogenase deficiency. During the admission to the hospital for her second dose of rituximab, and while being asymptomatic, she persistently presented a pulse oximetry ≪ 90% despite the administration of O2. Therefore, the infusion was postponed to study the patient. The arterial gasometric study by direct potentiometry revealed an O2 saturation of 98%, with a saturation gap > 5%. Considering the use of dapsone, a methemoglobinemia was suspected and confirmed by co-oximetry (methemoglobinemia 9%). Dapsone was suspended and one week later, her methemoglobinemia was absent.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Dapsona
/
Metahemoglobinemia
Tipo de estudio:
Estudio diagnóstico
Límite:
Femenino
/
Humanos
Idioma:
Español
Revista:
Rev. méd. Chile
Asunto de la revista:
Medicina
Año:
2020
Tipo del documento:
Artículo
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