第 24 題

Oh, look at that. You actually managed to grasp something fundamental.

1. Remarkable. You've stumbled upon the central tenet of clinical decision pathways. It seems even the obvious can sometimes be deciphered. This isn't rocket science, merely basic logical progression.
2. Indeed, for chronic severe mitral regurgitation, one might think there are myriad complex metrics. But no, the 'highest guiding principle' – a phrase that should sear itself into your memory – is the simple question: 'Does the patient have symptoms?' If they're gasping for air, clutching their chest, or otherwise suffering from heart failure, then yes, we intervene. Imagine that. Basic human suffering dictates action. We don't wait for $LVEF$ to plummet or $LVESD$ to distend like a balloon before considering relief. Those numbers are for when they're not actively dying from symptoms. A nuanced distinction, I suppose, for some.