Repost:
I'll call this "Musings from the battlefield"
Don't try to BS your way out of an answer you don't know. Just think, give the best answer you can and if necessary just say I don't know! If you don't know something, you'll probably be fine, unless it is contraindications to regional or Sux, or some other critical topic. If you start down the BS path, it will be obvious. If you get dragged down and tripped up, it may throw off the rest of the exam. No one knows everything, most pass on the first time. Keep that in mind. Also, obviously, the case is going to go where it is going to go, so when it all goes "BAD" don't stress out or waste a single second rethinking what you could have done to avoid the BADNESS. It was going there no matter what.
When they change "themes" in the same case, it is worth taking 5 seconds to quickly reset by reviewing the stem again. You get so wrapped up in "BADNESS #12" that when they switch suddenly to emergence you don't want to forget something critical from the stem. There's plenty of time to think for a couple seconds and give a short direct coherent answer. If they want the other 10 possible ddx for xxxxxx they will ask.
They know that you know the basics (you passed the written boards already) so just explain what you are thinking and answer the questions asked, nothing more, no dazzling with BS, no "the March issue of A&A had a great case report on..." , answer the question simply than any followups, and move on. Than CHARGE down to the BAR and TOAST YOUR VICTORY! (with a single malt whisky)👍
Bon chance!
One more thing. When you read the stem, or hear the grab bags, think about all the killing (failing) errors particular to that patient/situation. Maybe make a couple quick reminder notes. When you get flustered and drawn into the weeds, you can pause for a second and reflect on what you really want to avoid. "can we move on?" is also useful when you find yourself getting deep into the weeds and way off point. Keep focus on the actual case, and get back to questions that matter.