I don't know that there is any one cheat sheet out there that is going to be the little pot of gold you are hoping for. Lord knows I'd have loved such a thing.
Are you talking pedi or adult? OB? Surgery? Each rotation will have its own variations on the cheat sheet.
I do like the Tarascon guides for practical stuff. I also swear by my large Deluxe edition Pharmacopoeia. It has handy charts for pedi maintenance fluids, etc.
"Electrolyte repletion" is something people write whole books about. Which electrolyte? What's the disorder? What's your goal? How sick are they?
The thing about the coming year for you is this: the more you learn, the dumber you will feel.
Your upper level is there to help you. The nurses and pharmacists and techs are (allegedly) there to help you. Ask them questions. Often. And remember, you are an intern. They expect you to be a blank slate. Revel in this brief window in which you can fall back on your inexperience and lack of practical knowledge. It will be gone too soon....
My strategy was to annotate my Pocket Medicine and OB/GYN "Red Book" and Harriet Lane. (I'm a book person). Yours might be to make notes in your PDA as you learn these little tricks of the trade. I do suggest you write them down somewhere, though, because you will forget.
Nobody walks onto the wards on day one alone, and very few have the the answers to the stuff they are really going to want to know on a cheat sheet or a pocket guide, because every patient is different, and almost every situation calls for a slight variance on protocol and algorithm. Welcome to the maddening and frustrating and ultimately rewarding Art of Medicine.
Best of luck.
(and remember your upper levels have your back).
