Episodio – Intercambio gaseoso: limitación por difusión | USMLE Step 1

from USMLE DREAMERS · host USMLE DREAMERS

En este episodio analizamos un experimento clásico de fisiología respiratoria donde la PO₂ alveolar es normal, pero la PO₂ en sangre venosa pulmonar queda marcadamente baja, mientras la PCO₂ se mantiene en 40 mm Hg. Usaremos este patrón para distinguir limitación por difusión vs shunt vs hipoventilación, y para entender por qué el CO₂ “se iguala” antes que el O₂ incluso cuando la membrana alvéolo-capilar está alterada. #USMLEDreamers #USMLE #Step1 #Fisiologia #Pulmon #IntercambioGaseoso #Difusion #AaGradient

Episode metadata supplied by the publisher feed · Published Feb 12, 2026

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Episodio – Intercambio gaseoso: limitación por difusión | USMLE Step 1

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