DIT Flashcards
Kluver Bucy Syndrome clinical features and cause?
Disinhibited Hyperdocility Hyperorality Hypersexuality Curiosity
Caused by bilateral amygdala lesions
Order of human needs as described by Maslow
Self actualization Esteem Love and belonging Safety Physiological
Erikson’s stages of development: infant
Basic trust vs. mistrust
birth-18 months
Erikson’s: Toddler
Autonomy vs. shame
18 months-3 years
Erikson’s preschooler
Iniitiative vs. guilt
3 years-5 years
Erikson’s school-age child
Industry vs. inferiority
6-12 years
Erikson’s adolescent
Identity vs. role confusion
12-18 years
Erikson’s young adult
Intimacy vs. isolation
18-35 years
Erikson’s Middle aged adult
Generativity vs. self absorption
35-55 years
Older adult
Integrity vs. despair
55 years to death
What structural motifs allow for proteins to bind to dNA
helix loop helix
helix turn helix
zinc finger
Leucine zipper protein
What are the different RNA polymerases in eukaryotes?
RNA polymerase I: rRNA
RNA polymerase II: mRNA
RNA polymerase III: tRNA
Treat ADHD
Methylphenidate and dextroamphetamine
(CNS stimulants, cause release of catecholamines at the synaptic cleft)
or
Atomoxetine (norepinephrine reuptake inhibitor)
conduct disorder vs. anti-social personality disorder
less than 18 yo
older than 18
Oppositional defiant disorder vs. conduct disorder
Deep down they know its wrong
Treatment for tourette
behavioral therapy
fluphenazine
pimozide
tetrabenzine
Characteristics of autism spectrum disorder
Living in his own world
early childhood
lack of responsiveness to others
poor eye contact
absence of social smile
impairments in commnication
peculiar repetitive ritualistic habitis
fascination with specific seemingly mundane objects
below normal intelligence
Rett disorder
similar presentation to autism spectrum disorder
x linked dominant, seen almost exclusively in girls (homozygous dominant die in utero)
Loss of milestones or developmental regression
Intellectual disability
Ataxia
Loss of verbal abilities
Hand wringing and hand to mouth gestures
Causes of transudative pleural effusion
CHF Cirrhosis Nephrotic syndrome Pulmonary embolus Fluid overload
How is emphysema from smoking different than alpha1-antitrypsin deficiency
Smoking-centriacinar
alpha1-antitrypsin deficiency-panacinar
Treatment of anorexia
Psychotherapy, nutrtional
Signs of bulimia
Enlarged parotid glands
Increased serum amylase
Erosion of enamel of teeth
Hypokalemic hypochloremic metabolic alkalosis
Hypokalemic hypochloremic metabolic alkalosis
Stomach puts bicarb into serum to buffer the acid reabsorption, which doesnt happen. so you get alkalotic.
Opposite to DKA, you get hypokalemic b/c the potassium goes into the cells.
Chloride follows H+
Treatment of bulimia
SSRI (fluoxetine) with psychotherapy
Criteria for anorexia
- Distorted body image
- Intense fear of gaining weight
- Refusal to maintain normal body weight, with BMI
Criteria for binge eating disorder
Episodes of binging with sense of lack of control
At least 3/5
- Eating faster
- Eating until uncomfortably full
- Eating large amounts when not hungry
- Eating alone
- Feeling badly about it
Marked distress or remorse
At least 1x/week for 3 months with no compensatory behavior
What are the different RNA polymerases in prokaryotes
Only one.
Makes 3 types of RNA
What enzyme is deficient in Lesch-Nyhan syndrome?
Treatment
HGPRT (hypoxanthine-guanine phosphoribosyltransferase)
Tx: Allopurinol [for hyperuricemia/gout but mental disorder still present]
Causes of an exudative pleural effusion
Pneumonia Infection TB Cancer Uremia Connective tissue disease
Stages of Behavioral change
Precontemplation Contemplation Preparation/determination Action/Willpower Maintenance Relapse
Alcohol action
GABA receptors (like benzodiazepine and barbiturates)
Alcohol withdrawal symptoms
agitation anxiety insomnia tremor formication Deliirium tremens is severe
Delirium tremens
2-3 days after cessation of alcohol (often seen in post op)
seizures and extreme autonomic hyperactivity
Treatment of alcohol withdrawal
Benzodiazepines
Alcohol
Screening for alcoholism
CAGE Cut back Annoyance Guilt Eye-opener
Wernicke Korsakoff syndrome
Where does damage happen
Treatment
What to NOT DO
Thiamine (B1) deficiency
Wernicke encephalopathy (acute) and Korsakoff syndrome (long term consequence)
Damage to
- Medial thalamus
- Mammillary bodies of posterior hypothalamus
Tx: IV thiamine
DO NOT give glucose without thiamine first. because active thiamine is required for metabolism of glucose.
Wernicke encephalopathy
Confusion Nystagmus Ophthalmoplegia Ataxia Sluggish pupillary reflexes Coma and death if untreated
Korsakoff syndrome
Anterograde amnesia
Retrograde amnesia
Confabulation
Hallucinations
Long term treatment of alcoholism
- AA: is tried and true best relapse prevention
- Naltrexone (also opioid antagonst)
- Disulfiram [inhibits acetylaldehyde dehydrogenase]
- Topiramate [affects glutamate receptors, also used for migraine prevention and seizures]
- Acamprosate (campral) [also affects glutamate receptors]
Time frame for schizophrenia
> 6 months
Time frame for brief psychotic episode
Time frame for schizophreniform
1-6months
Criteria for schizoaffective disorder
Psychotic symptoms for 2 weeks or more in absence of mood disorder
AND
A time period with BOTH psychosis and a major mood disorder episode at the same time
Positive symptoms of schizophrenia
Theory
delusions
halucinations
disorganized speech
Grossly disorganized/catatonic
Increased dopamine to mesolimbic system
Negative symptoms of schizophrenia
Theory
alogia avolition affective flattening social withdrawal thought blocking poor grooming
Decreased dopamine to mesocortical
How long does a delusional disorder last?
> 1 month
Characteristic finding for EM of dendritic cell with Langerhans cell histiocytosis
Birbeck granules, “Tennis rackets”
Low potency typical antipsychotics
Chlorpromazine
Thioridazine
SE of low potency typical antipsychotics
Anticholinergic SE Block D2 dopamine receptors Block muscarinic receptors Block alpha1 receptors--> Hypotension Block histamine receptors-->Sedation
High potency typical antipsychotics
Haloperidol Fluphenazine Loxapine Thiothixene Trifluoperazine
SE of high potency typical antipsychotics
Fewer anticholinergic,
EPS/Tardive dyskinesia
NMS
within first several days: acute dystonia and torticollis. Treat wtih antimuscarinic or anticholinergic drug (benztropine or diphenhydramine)
within first month: parkinsonism (bradykinesia, akinesia)
within 2 months: Akathisia (restlessness
Several months-years: Tardive dyskinesia (not an EPS). lip smacking. irrev.
SE Atypical antipsychotics
Fewer EPS
Fewer anticholinergic
Weight gain
Atypical antipsychotics
Olanzapine Quetiapine Risperidone Aripiprazole Clozapine
NMS symptoms
treatment
Deliirium and altered mental status Autonomic instabliity Muscle rigidity Myoglobinuria Hyperpyrexia
tx: Dantrolene [also used for malignant hyperthermia]
or dopamine agonist (bromocriptine)
Mech of atypical antipsychotics
block dopamine receptors
block serotonin receptors
block alpha-receptors:hypotension
block histamine receptors:sedation and wt gain. (especially olanzapine, also diabetes)
Clozapine
Strongest most effective atypical antipsychotics
But Agranulocytosis!! so need to check CBC weekly. Ergo third line antipsychotic.
Quetiapine
treat psychosis from parkinson meds
Lowest risk of EPS
Mania
> 1 wk. distinct period of abnormally and persistently elevated, expansive or elevated mood.
SEveree enough to cause
- marked impairment in social or occupation function
- require hospitalization
- psychotic features
DIGFAST
DIGFAST
MANIA
Distractibility Irresponsibility Grandiosity Flight of ideas Activity/agitation Sleep (decreased need) Talkativeness/pressured speech
Hypomania (why different than mania)
same symptoms but less severe
> 4 days
No marked impairment in social or occupational functioning!
Bipolar I disorder
Bipolar II disorder
1 manic episode
vs. Hypomanic episode and 1 episode of major depression
NT changes in Depression
Decreased Dopamine
Decreased Serotonin
Decreased NE
NT changes in Mania
Increased serotonin
Increased NE
Cyclothymic disorder
at least 2 years of mild hypomanic and mild depressive symptoms.
with no periods of normal mood longer than 2 months!
Treatment of bipolar disorder
Lithium
Atypical antipsychotics
- Risperidone
- Aripiprazole
- Olanzapine
Antiepileptic
- Lamotrigine
- Valproic acid
- Carbamazepine
SE of lithium
sedation and dizziness tremors sick sinus syndrome bradycardia heart block hypothyroidism goiter polyuria (blocking ADH action by blocking the luminal Aquaporin channels)-->Nephrogenic diabetes insipid Ebstein anomaly
Ebstein anomaly
Tricuspid leaflets are displaced inferiorly into the right ventricle
Hypoplasia of the right ventricle
Tricuspid regurgitation or stenosis
Patent foramen ovale
Most common SE of lithium to occur rapidly (or any other time)
tremor
SSRI drugs
Fluoxetine Paroxetine Sertraline Fluvoxamine Escitalopram Citalopram
SNRI drugs
Venlafaxine
Duloxetine
Desvenlafaxine
TCAs drugs
Desipramine Nortriptyline Imipramine Amitriptyline Doxepin
MAOI drugs
Tranylcypromine
Phenelzine
Isocarboxazid
MDD with seasonal pattern
> 2 years
2 major depressive episodess
2 year time frame
No non-seasonal episode of MDD during the 2 years
SADPERSONS
Sex (males) Age (45) Depression Previous attempt Ethanol/drug use Rational thinking (loss) Sickness Organized plan No spouse/no social support Stated future intent
SSRI
Citalopram
Fluoxetine
Paroxetine
Sertraline
serotonin syndorme
treatment
hyperthermia hyperreflexia/myoclonus autonomic instability flushing diarrhea MSC
Tx:
- Cooling down
- Benzodiazepines
- Stopping the medications
-Cyproheptadine (serotonin antagonist, but not first line)
SNRIs
Desvenlafaxine
Venlafaxine
Duloxetine (also approved for neuropathic pain)
Milnacipran (only for fibromyalgia, not depression)
TCAs
Amitriptyline Nortriptyline Imipramine Desipramine Clomipramine Doxepin Amoxapine
TCAs and their uses
Imipramine-enuresis
OCD-clomipramine
Fibromyalgia-amitriptyline
Neuropathic pain-amitriptyline
TCA SE
and Tx
Convulsions Coma Cardiotoxicity Respiratory depression Hyperpyrexia Confusion and hallucination
if CV toxicity–>Sodium bicarbonate (because trap the weak acid TCA in the urine and excreted)
MAOI
Tranylcypromine
Phenelzine
Isocarboxazid
Selegilene (not antidepressant, MAO-B just for dopamine for parkinsonism)
MAOI SE
Hypertensive crisis (tyramine ingestion).
Atypical antidepressants
Bupropion
Mirtazapine
Trazodone
Bupropion
use
mech
SE
Smoking cessation
antidepressant
inhibits reuptake of norepinephrine and dopamine
- Lowers seizure threshold
- stimulant (don’t use at night)
- NO SEXUAL SE, so can use in lieu of SSRI
Mirtazapine
Mech
SE
alpha2 antagonist, promoting further norepinephrine release.
similar to SSRI except serotonin2 and serotonin3 receptor antagonist
SE: -Sedation Increased appetite -Wt gain -Dry mouth
Trazodone
Mech
Use
SE
inhibits serotonin reuptake
not for depression because would require too high dose. used for insomnia.
along with bupropion can be used as adjunct for SSRI or SNRI
SE:
- Sedation
- Priapism
Seronegative spondyloarthropathies
PAIR
Psoriatic arthritis
Ankylosing spondylitis
Inflammatory Bowel disease
Reactive arthritis (Reiter syndrome0
Hartnup disease
Deficiency of transporter for neutral AA (tryptophan)
Can't make niacin-->pellagra Dermatitis Diarrhea Dementia Death
Full saturation of glucose transporters
Begin spilling at 160
Fully saturated at 350
Psamomma bdoesis
Papillary adenocarcinoma
Serous cystadenocarcinoma of the ovary
Meningioma
Mesothelioma
lyti8c bone lesions on xray
multiple myeloma
What are the toxins for strep pyogenes
Streptolysin O-hemolysis on blod agar plates, oxygen labile
Streptolysin S-oxygen stable
Streptococcal pyrogenic exotoxins type A, B, and C- erythrogenic toxins
What is HUS
Hemolytic uremic syndrome
O157:H7 serotype E. coli
Hemolytic anemia
Thrombocytopenia
Acute renal failure
How are organic anions secreted in the proximal convoluted tubule?
Alpha ketoglutarate/Organic anion antitransporter.
Alpha ketoglutarate is brought into cell by Alpha ketoglutarate/Na+ cotransporter.
Na/K ATPase sets up gradient