All the content from the Blood & Clots series can be found here. CanMEDS Roles addressed: Medical Expert, Collaborator Case Description You are assessing a 55-year-old male patient in the emergency room who is presenting with headache, fever, and neck stiffness. He needs a lumbar puncture to rule out bacterial meningitis. However, he is on apixaban 5 mg twice daily for atrial fibrillation with a CHADS65 score of 1 point for hypertension. His …