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Vascular Anatomy > Fetal carotid-vertebrobasilar anastomoses > Flashcards

Fetal carotid-vertebrobasilar anastomoses Flashcards

1
Q

Fetal carotid-vertebrobasilar anastomoses order of invoultion

A

order of involution: otic ➡️ hypoglossal ➡️ primitive trigeminal ➡️ proatlantal).
Otic 1st invoulation

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2
Q

Mc persistence fetal Anastomosis

A

persistent primitive trigeminal artery (PPTA): MCC by (83%)

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3
Q

PPTA. Classification Saltzman
Connect cavernous ICA w BA

A

persistence
Saltzman 1 ; PCOM hypoplastic and PTTA provide 🩸 BA, PCA ,SCA

Saltzman 2 PCOM supply ➡️ PCA

Saltzman3 PPTA join SCA 🔛 instead BA ➡️ was a test recommended

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4
Q

Otic

A

🥇 to invoulate
Connect petrous ICA to BA through IAC

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5
Q

hypoglossal

A

Connect petrous or cervical to VA through hypoglossal canal
🚫 no pass through FM

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6
Q

proatlantal intersegmental

A

Connect Icervical ICA w BA
Arise from CCA , ECA , or ICA anatsmosis VS sub occipital area

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Vascular Anatomy (8 decks)

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