MCQ Hematology 26

A 25-year-old white woman presents to the emergency room with the complaint of extreme shortness of breath of acute onset. She was actually seen in the same emergency room 24 hours previously where she was diagnosed with a urinary tract infection and given prescriptions for phenazopyridine (Pyridium) and sulfamethoxazole. She is overweight and sedentary and smokes two packs of cigarettes a day. On physical exam she is markedly dyspneic and extremely cyanotic. Arterial blood gases fail to reveal any hypoxia, but a ventilation-perfusion scan is obtained anyway, which is read as low probability. What should be the next course of action?

A. Repeat the arterial blood gas to look for progression and development of hypoxia.
B. Proceed to pulmonary arteriography.
C. Begin anticoagulation.
D. Administer methylene blue.
E. Transfuse two units of packed RBCs.

Answer

Tags: MCQ, Hematology, Cyanosis, Methemoglobin

Category: Hematology MCQs