Brain stem lesions and presentations Flashcards
presents w/ lateral strabismus, fixed pupil; where is the lesion and what artery is occluded
CNIII nucleus Medial midbrain; PCA (weber’s syndrome)
Mandibular deviation; where is the lesion and what artery is occluded
motor nucleus V in lateral upper pons; Sup Cerebellar a.
Medial strabismus; where is the lesion and what artery is occluded
CN VI nucleus in medial lower pons; paramedic branch of basilar a.
facial muscle palsy; where is the lesion and what artery is occluded
CN VII in lateral lower pons; AICA
Tongue deviation; where is the lesion and what artery is occluded
CNXII nucleus in medial upper medula; ant spinal a. (ASA)
Dysphagia, hoarseness, uvula deviation; where is the lesion and what artery is occluded
Nucleus ambiguus (CN IX & X) in lateral upper medula; PICA (wallenberg syndrome)
PCA is lesioned what is the nucleus and where is it
CNIII; medial midbrain
Superior cerebellar a. is lesioned what is the nucleus and where is it
motor nucleus V in lateral upper pons
paramedic branch of basilar a. is lesioned what is the nucleus and where is it
CNVI in medial lower pons
AICA is lesioned what is the nucleus and where is it
CNVII in lateral lower pons
ASA is lesioned what is the nucleus and where is it
CNXII in medial upper medulla
PICAis lesioned what is the nucleus and where is it
nucleus ambiguus (CN IX & X) in lateral upper medulla
how does a medial lower pons lesion present
medial strabismus
how does a lateral lower pons lesion present
facial muscle palsy
how does a medial midbrain lesion present
lateral strabismus, fixed pupil (weber syndrome)
