LAST SEM CONCEPTS Flashcards
What NT is responsible for the negative effects of Benzos?
GABA
What is the first line pharmacotherapy for anxiety disorders?
SSRIs– fluoxetine, paroxetine, ec___, sertraline
What melatonin agonist can be used safely in the elderly?
Ramelteon (for elderly & jetlag)
What is the MOA and TU of Mirtazapine?
a2 blocker –> increase 5HT & NE… adjunct anti-depressant. Decr sexual AE and blocks nausea
Pt is taking MAO-I, but it’s not working. Switch him to a transdermal MAOI. What is the benefit?
Selegiline– doesn’t cause HTN crisis with tyramines (bypasses GI)
Anxious and depressed. How do you tx?
SSRI. If already on SSRI, give SNRI
Partial generalized seizures. What first gen, narroow spec drug?
Phenytoin. AE = gingival hyperplasia,, hirsutism
Pt is on Valproate. What second gen drug would you add to increase efficacy?
Lamotrigine– increased half-life because valproate will inhibit CYP450
What are the effects of Carbamazapine on P450s and what clinical effects will this have?
Induces P450s, therefore induces its own metabolism.
Patient has tics…. What is the MOA of the drug that you prescribe?
Guanfacine— a2 agonist
Vascular headache with gradual onset, photophobia. History of HTN and family hx of vascular problems. What kind of headache?
Migraine
Regular episodic severe unilateral headache in male. Eye-watering. Short in length.
Cluster headaches
Limbic signs, deja vu. Where is the seizure?
Medial temporal lobe
Transient loss of vision.
Retinal artery occlusion due to microthrombi in the common carotid.
Pic of woman with 2 lights shining into eyes from side. Shadow indicates?
Shallow anterior chamber– acute angle closure glaucoma
Crescent shaped hematoma. Pre-existing cortical atrophy.
Subdural hematoma
Glasgow Coma scale. Midpoint pupils. what level?
Midbrain.
What is an optional test used to determine brain death?
Cerebral Angiography
Weakness Face & Arm > Leg
MCA
Timeline of nervous tissue reaction to injury
2 days only - red neuron.
2-3 days- PMNs
3-10 days- foamy macrophages & gemistocytes
11-4w- liquefaction, fibrillary astrocytes
Infection of brain with ring-like lesions. Patient dies after seeming like she was recovering.
Abscess– rupture into ventricles. (s.pneumo)
HIstology of Alzheimers
Neurofibrillary triangles (PHFs, Tau), Senile Neuritic Plaques w/amyloid core
Person hits head. Seems fine, but dies.
Epidural hematoma–lucid phase
45 year old man running on treadmill. Gets headache. Rests against wall. Passes out 3 mins later and dies.
Berry aneurysm. (marfan, polycystic kidney, HTN)
Pallisading tumor.
Glioblastoma (large darker pink cirlcle-ish)
Homer Wright Rosettes
Medulloblastoma (purple rosette with pinkish stuff inside)
Proliferative retinopathy
VEGF
Fixed, mid-sized pupil. increased SNS. asian.
Acute angle closure glaucoma
Person any age over 10y and still walking, family history of dystrophy. Pseudoatrophy of calves.
Beckers
S/S Major Depressive Disorder
SIGECAPS
Bipolar I vs II
I- manic; II - major dep + hypomania
Straight A med student sleeps 4h a day
Hypomania
Paranoid that in-law or friend is poisoning him
paranoid schizophrenia
Sinusitis –> abscess- causitive agent
s.pneumo
Dx ketosis in hypoglycemic infant
urine strip for ketonuria, ketone breath
Prostprandial physiologic changes in glucose metabolism.
decrease GH, increased glycogenolysis, decreased guconeogenesis
During thyroid surgery, mess up ligation of nerves @ right inferior thyroid artery. Woman wakes up with hoarse voice. What did you hit?
Right recurrent larygeal
Overuse of somatotroph cells- what will you see (in terms of glucose levels?)
Hyperglycemia (somatotroph increases GH which increases glucose)
Diabetic Ketoacidosis. Treatment?
Saline. Check potassium first. If normo- or hyperkalemic, give insulin.
What is the mechanism of Atomoxetine?
Non-stimulant treatment of ADD– Norepi reuptake inhibitor
Treatment of Huntington’s Chorea?
Tetrabenazine- controls chorea by inhibiting VMAT –> dec. DA.
A/E include depression & prolonged QT
What is an adverse effect of Sumatriptan
Coronary Vasospasm– angina
How would you treat ALCOHOL WITHDRAWAL SX in the ELDERLY & those with LIVER DAMAGE?
INTERMEDIATE-acting benzo (elderly)– oxazepam, lorazepam, t—-pam.
What MAO-I works in Parkinson’s and how?
Selegilin- transdermal patch. Low doses selectively inhibit MAO-B, thereby increasing levels of DA
What si the role of Carbidopa in combination with L-DOPA?
Blocks AADC in the periphery, preventing the metabolism of L-DOPA in the periphery, allowing more to reach the CNS
What is the MOA of Donepazil?
Cholinesterase inhibitor (2nd gen)
What is the MOA and TU of Memantine?
NMDA receptor antagonist. For moderate-severe Alz
What is an abnormal movment side-effect that occurs with chronic L-DOPA and carbidopa?
Dyskinesias— treat by reducing dose and adding AMANTADINE
Schizophrenic. Has been taking a first generation drug for 30 years and has odd movements such as tongue flicking and jerking. Why? What is the drug?
TARDIVE DYSKINESIA!! From Haloperidol or Chlorapromazine
Anti-psychotic. D2 and 5-HT1a partial agonist. No weight gain.
Aripiprazole. No muscarinic, 5HT2C or His antag–> lowest weight gain. Approved for teens. Also approved to treat irritability in autism.
What is the most significant modifiable risk factor for stroke?
HTN
Girl’s father has a stroke in front of her. Before she calls the ambulance, what should she give him?
Baby aspirin.