Episodio – Aortic stenosis y A-fib: pérdida del “atrial kick” y edema pulmonar agudo | USMLE Step 1 episode artwork

EPISODE · Jan 2, 2026 · 5 MIN

Episodio – Aortic stenosis y A-fib: pérdida del “atrial kick” y edema pulmonar agudo | USMLE Step 1

from USMLE DREAMERS · host USMLE DREAMERS

Varón de 72 años con estenosis aórtica severa (aortic stenosis) desarrolla fibrilación auricular (atrial fibrillation) de inicio reciente con hipotensión y edema pulmonar agudo. En este episodio explicamos por qué, en un ventrículo izquierdo hipertrófico y poco complaciente, la contracción auricular es crítica para el llenado ventricular. La pérdida súbita del “atrial kick” reduce el precarga (preload), cae el gasto cardiaco y aumenta la presión venosa pulmonar, desencadenando disnea y edema pulmonar.#USMLEDreamers #USMLEStep1 #Cardiología #EstenosisAórtica #AtrialFibrillation #Hemodinámica #EdemaPulmonar #Preload

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Episodio – Aortic stenosis y A-fib: pérdida del “atrial kick” y edema pulmonar agudo | USMLE Step 1

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