Oxygen-hemoglobin dissociation curve US Medical PG Flashcards - Medical Study Cards
Master Oxygen-hemoglobin dissociation curve with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.
Oxygen-hemoglobin dissociation curve Flashcard Deck - 10 Cards
Flashcard 1: Carbon monoxide binds competitively to Hb and with 200-250x _____ affinity than O2
Answer: greater
Flashcard 2: Carboxyhemoglobin heme groups not bound by CO have a(n) _____ affinity for O2
Answer: increased
Flashcard 3: What is the secondary regulator of cerebral perfusion?
Answer: PO2 - only takes effect during severe hypoxia
Flashcard 4: What is the primary regulator of cerebral perfusion?
Answer: PCO2
Flashcard 5: How long can the brain withstand hypoxia before sustaining irreversible damage?
Answer: 5 minutes
Flashcard 6: Which zone of the lung has the highest Pao2?
_____
Answer: Zone 1
Extra:
Watch associated Bootcamp video [https://app.bootcamp.com/med-school/pulmonology/videos/blood?index=14]
https://onlinemeded.org?ref=anki
Flashcard 7: COPD, cyanotic congenital heart disease, obstructive sleep apnea, and high altitude cause _____ polycythemia
Answer: physiologic secondary
Extra:
* due to chronic hypoxia
Watch Polycythemia [https://dashboard.sketchy.com/study/medical/courses/medical-pathophysiology/units/medical-pathophysiology-myeloid-lymphoid/videos/medical-pathophysiology-myeloid-and-lymphoid-myeloid-disorders-polycythemia?utm_source=anki&utm_medium=partnership&utm_campaign=february_update&utm_content=medical]
https://onlinemeded.org?ref=anki
Flashcard 8: In the _____, HCO3- enters the red blood cells in exchange for Cl-
Answer: lungs
Extra:
Watch associated Bootcamp video [https://app.bootcamp.com/med-school/pulmonology/videos/blood?index=12]
https://onlinemeded.org?ref=anki
Flashcard 9: Is the A - a gradient normal, increased, or decreased, in response to right-to-left shunts?
_____
Answer: Increased
Extra:
Watch associated Bootcamp video [https://app.bootcamp.com/med-school/pulmonology/videos/blood?index=26]
https://onlinemeded.org?ref=anki
Flashcard 10: _____ in 2,3-BPG cause the O2-hemoglobin dissociation curve to shift to the left
Answer: Decreases
Extra:
https://onlinemeded.org/spa/heme-onc/hemoglobin/acquire?ref=anki
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