The "Joan" postings worked quite well, especially if their main purpose were to provide a teaching tool for anyone in the medical field (nurses, EMTs, doctors). Much more vivid and memorable than the usual stuff in the books. The only minor critique I'd make is that in Joan#4 you suddenly switch to the patient's point of view. You either didn't do that previously, or did it more smoothly, or with better indications to the readers of whose head they were inside. Something didn't sit quite right there. Alternating between regular and italics for the expository versus "story" parts worked well.