1. The patient in the previous question has the following vital signs: HR: 128, BP: 108/60; RR: 28; SpO₂: 99%; EtCO₂: 32 mmHg. What is the most appropriate treatment for the patient?

2. A blood test reveals that a patient has anti-A antibodies. Which type(s) of blood can the patient receive when a transfusion is needed?

3. You are at the home of a 9-year-old male patient who has a known history of sickle cell disease. The patient is complaining of a several day history of increasing pain in the LUQ and diffuse rebound tenderness. The patient is weak and pale. The parents had been trying to control the pain with tramadol at home, but it is not working. What is the most likely cause of this patient’s pain?