system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
60 year old person presents with history of angina and shortness of breath for the past week. Blood withdrawn shows thick brownish red color. Diagnosis?
assistant
The correct answer is  Ans. (c) Meth-hemoglobinaemiaRef.: Harrison 19th ed. / 636* Sickle cell anemia has a pediatric presentation.* Hemolytic anemia will cause pallor and not brown discoloration of blood.* In G6PD in event of intravascular hemolysis the hemoglobinuria will cause a black urine. Therefore by exclusion also the answer is meth-hemoglobinaemia.