Metahemoglobinemia adquirida inducida por fármacos antipalúdicos

2017 
Resumen Clasicamente se describe cianosis como niveles de hemoglobina desoxigenada en sangre periferica por encima de 5g/dl; sin embargo se ha dejado a un lado, que dicha expresion clinica no solo responde a esta condicion, sino tambien a la acumulacion distal de pigmentos anomalos producto de la alteracion en la morfologia habitual de la molecula de hemglobina o el estado quimico de esta. Por tal motivo, se presenta un interesante caso clinico en paciente masculino de 35 anos de edad, quien consulta por cuadro febril agudo y diagnostico de Paludismo por Plasmodium vivax, iniciando tratamiento antipaludico. Posteriormente presenta, en ausencia de fiebre, cianosis peribucal y acral acompanada de disminucion de la saturacion a 83% por oximetria de pulso. El diagnostico se baso en la evidencia clinica y la oximetria de pulso, el manejo terapeutico consistio en la administracion de oxigeno humedo y bolos de azul de metileno, notando franca mejoria clinica. Abstract Methemoglobinemia has traditionally been described in multiple studies. Cyanosis, and deoxygenated hemoglobin levels in peripheral blood above 5g / dL, not only responds to this condition, but also to the distal accumulation of anomalous pigments as products of an alteration in the normal morphology of the haemoglobin molecule or chemical state of this. An interesting case report is presented in a male, who after the diagnosis of Plasmodium Vivax Malaria and malaria treatment presenteded perioral the and distal cyanosis, as well as desaturation of 83% by oximetry. The diagnosis was based on clinical evidence and pulse oximetry, and therapeutic approach was based on the administration of wet oxygen and methylene blue bowling, showing marked clinical improvement.
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