Ah, medical ethics! This is one of those high-yield topics that can feel like a "freebie" if you know the rules, but the USMLE loves to throw in those tricky "best next step" questions. Let's break down the big three you mentioned (plus non-maleficence, because they're a package deal).

I'll start by pulling up some key lessons that cover these principles in detail for your exam prep.

In USMLE scenarios, Autonomy is often the "trump card." It means the patient has the right to make their own decisions, even if those decisions seem unwise to you. The key is ensuring they have capacity—they understand the info, the consequences, and can explain their reasoning.

Beneficence and Non-maleficence are like two sides of the same coin: doing good while avoiding harm. In exam questions, this often comes down to balancing the benefits of a treatment against its risks.

Let me find a good diagram to help visualize these pillars.