Pediatric ApOx, Metoprolol vs Dilt for Afib in HF patients, Premedication for Adults with Ketamine sedation, Early IV fluids by EMS and sepsis mortality, Prehospital Sepsis Alerts, C-spine clearance with distracting injuries, Pediatric FAST for solid organ injury, Financial conflicts with stroke guidelines, and the HOUR rule for opioid overdoses.