Day 9 Flashcards
AED with Broadest Coverage Spectrum
Depakote
VPA Mech
Blockage of Vg Na channels and GABA enhancement
Oxcarb vs. Carbam Metabolism
Oxcarb doesn’t produce autoinduction
TCA Cardiac Conduction (2)
Prolongs both PR and QRS intervals
But can also cause tachycardia
L5 Function/Damage
Foot flexion/dorsiflexion. So dropfoot
S1 Function
Foot extension
L3/L4 Function
Leg extension/quads
L1/2/3 Function
Hip flexion/iliopsoas
S1 Reflex
Achilles/ankle jerk
Vilazodone Mech (2)
5HT 1A partial agonist and SSRI
Brown-Sequard Syndrome
Hemisection of spinal cord:
Ipsilateral motor + posterior column (vib/proprio) at level of injury and below
Contralateral loss of pain/temp 1-2 dermatomes below
ACA Territory
Medial frontal lobes
ACA Stroke Motor
Often preferential leg > face/arms, but still some (& obv contralateral)
ACA Ocular
Loss of tonic opposition, so look towards the lesion
ACA Stroke Behavior
Abulia/amotivation. So won’t do things independently, maybe mute
NE/5HT/DA/ACh origins
NE: Locus ceruleus
5HT: dorsal raphe nuclei
DA: SN
ACh: nucleus basalis of Meynert
Pure Sensory Stroke:
Small lesion to ventroposterolateral nucleus of thalamus
Hemiballismus Lesion Location
Contralateral subthalamic nucleus of Luys
6 Biogenic Amine NTs
DA Epi NE ACh Histamine 5HT
3 Catecholamines (& precursor)
Precursor: Tyrosine
DA
NE
Epi
Cocaine and Biogenic Amines
Blocks their reuptake, most specifically 5HT/NE/DA
Tyrosine and Tyramine
Tyramine is breakdown product of tyrosine
Reserpine Mech
Blocks Mg-dependent uptake of biogenic amines, depleting DA, NE, and 5HT
Reserpine Use
Can relieve dystonia