I'm an RN, so I guess I hadn't really noticed the acronym issue. Most of them, I know. Thing is, the medical stuff doesn't seem to add to the story. He could be a pharmacist or a carpenter, and it wouldn't matter much, except for how he and Sheila met. There are LOADS of abbreviations - I can decipher most if you like. EMT (or EMTA) = Emergency Medical Technician. EMTB usually refers to a Paramedic (one step above EMT) but different states seem to use different terms for that one. As for EAD... not sure about that one. Was it AED, maybe? That would be an automatic external defibrillator. The thingie you can get at the local shopping mall, if someone has a heart attack, geared for the non-medical person to be able to use evaluate a cardiac rhythm and zap them if appropriate. I don't recall where that may have been in the story.
Shreeve definitely did some research to get the paramedic thing down, but I don't think she has a medical background herself. There are terms such as SOB (shortness of breath) and ETOH (alcohol) that are frequently written, but not really used verbally. I've worked ER, med surg and hospice, plus married to a medic, and in 20+ years of healthcare, can't ever remember those terms being used verbally. You can't really CALL someone a SOBer without them thinking you mean the other meaning, lol. Minor fumble, but something you would think a good editor would catch.
I'm at the point now where Rowan is a teenager, has come home drunk once, and he has located Sheila after 15 some odd years, thinking she can help. Sheila is a painter, and declined to help. It seems... strange to me. I have two girls from my first marriage, and am very estranged from their biological father, and that just doesn't compute to me. If my child were sick enough to be so concerned about alcohol poisoning, I'd probably push fluids, possibly take her to an ER. But contact their father, thinking he would fix it somehow? Never. That seems absurd and very reactionary to me. A guidance counselor might be appropriate. But churning up stuff that has the potential for disaster when you're already concerned? Seems like asking for trouble.
The writing is still very slow to me. I'll probably finish it, but I'm glad I've read other books of hers, otherwise it would probably not be an author I'd read again. "Testimony" was much better.