In this Part 2 of EM Cases' Highlights from Whistler's Update in EM Conference 2015 Dr. David Carr gives you his top 5 pearls and pitfalls on ED antibiotic use including when patients with sinusitis really require antibiotics, when oral antibiotics can replace IV antibiotics, how we should be dosing Vancomycin in the ED, the newest antibiotic regimens for gonorrhea and the mortality benefit associated with antibiotic use in patients with upper GI bleeds. Dr. Chris Hicks gives you his take on immediate PCI in post-cardiac arrest patients with a presumed cardiac cause and The Modified HEART Score to safely discharge patients with low risk chest pain.