08-17-2014, 07:08 AM
A 21-year-old woman with a history of sickle cell anemia presents to the emergency department with 3 days of fever and cough productive of purulent sputum. The patient has three prior hospitalizations for painful sickle cell crises over the past 2 years. She takes oxycodone as needed several times daily for chronic leg pain. She has received immunization against Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae type B. Her temperature is 38.5°C (101.3°F), blood pressure is 108/50 mm Hg, heart rate is 110/min, and oxygen saturation is 96% on room air. Physical examination reveals dullness to percussion over the left lower lung field. X-ray of the chest reveals pneumonia.
Which of the following would be an indication for exchange transfusion in this patient?
A.Alloimmunization
B.Hemoglobin level of 7.2 g/dL
C.Oxygen saturation
Which of the following would be an indication for exchange transfusion in this patient?
A.Alloimmunization
B.Hemoglobin level of 7.2 g/dL
C.Oxygen saturation