why is IV tPA ≤4.5hrs? and other quirks of current medical guidelines

It's hard to believe I'm nearing the end of my preclinical journey in medical school. In theory at this stage, I am supposed to have learned all of the preparatory content for the first step of the board exams that are required to become a licensed physician ("Step 1"). In reality, I feel like I … Continue reading why is IV tPA ≤4.5hrs? and other quirks of current medical guidelines