Episodio – Hemoglobina fetal: predominio neonatal y cambio de cadenas | USMLE Step 1

from USMLE DREAMERS · host USMLE DREAMERS

En un RN (recién nacido) a término, la HbF (hemoglobina fetal) sigue siendo el tipo predominante de Hb (hemoglobina) durante los primeros meses de vida. En este episodio repasamos la cronología de síntesis de Hb (embrionaria → fetal → adulta), el “switch” γ→β, y por qué la HbF tiene mayor afinidad por O₂ (oxígeno) al unirse pobremente al 2,3-BPG (2,3-bisfosfoglicerato). Integramos el caso clínico con perlas de alto rendimiento para Step 1.#USMLE #Step1 #USMLEDreamers #Hemoglobin #HbF #Pediatrics #Physiology #Hematology

Episode metadata supplied by the publisher feed · Published Feb 11, 2026

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Episodio – Hemoglobina fetal: predominio neonatal y cambio de cadenas | USMLE Step 1

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