Psych rotation Flashcards
Class and mechanism of mirtazapine? Uses?
Tetracyclic antidepressant
Noradrenergic and serotonergic mechanisms; NOT A REUPTAKE INHIBITOR
Depression
Anxiety disorders
Induce sleep
What is ideas of reference?
False beliefs that, for example, TV, radio, performer, song, or newspaper article refers to oneself
Pt started on lithium. You might see a benign increase in ________. They also have a tremor. How can you help the tremor?
Benign increase in WBC
Propanolol can may help with tremor
Normal grief feelings of guilt, sadness, appetite changes, illusions usually abate after _______ (time)
Usually abate after 6 months of the loss
Pt’s ability to function appropriately in their life is preserved
What is complicated grief?
Complicated/prolonged grief:
- Persists for at least 6 months + 4/8 symptoms:
- Difficulty moving on with life
- Numbness/detachment
- Bitterness
- Agitation
- Feeling that life is empty without deceased
- Trouble accepting loss
- Feeling the future holds no meaning without deceased
- Difficulty trusting others since loss
Age related effects of alcohol?
Decreased alcohol dehydrogenase –> increased BAL with less drinks compared to younger adults
Increased CNS sensitivity to alcohols
Isoniazid + alcohol use can lead to increased risk of _____
Increased risk of hepatotoxicity
Alcohol + acetaminophen, isoniazid, or phenylbutazone
Antihistamines + alcohol use can lead to increased _____
Sedation
Alcohol with these can cause sedation: Antihistamine Benzos TCAs Narcotics Barbiturates
Drinking alcohol with what other drug can lead to higher BALs?
Alcohol + H2 blockers –> Higher BALs
Alcohol + long acting hypoglycemics –> ?
Nausea/vomiting
Most common psych disorder in elderly?
MDD
Most Alzheimers patients experience delusions. T/F?
True
Delusions are reported in up to 70% of Alzheimers
Most dementia patients experience hallucinations. T/F? Are they mostly auditory or visual?
False
Hallucinations can be seen in up to 33% of dementia pts
Mostly VISUAL
Visual hallucinations early in dementia suggest a dx of _____
Lewy body dementia
DO NOT GIVE ANTIPSYCHOTICS
If you have to use antipsychotics in elderly, which meds?
Quetiapine or olanzapine with severe symptoms
Short term haloperidol or risperidone
If sedative hypnotics are used in the elderly, what drugs are used?
Trazodone
Hydroxyzine
(safer than the more sedating benzos)
What is K-ABC? WISC-R?
K-ABC: intelligence test for children 2-12
WISC-R: Determines IQ for ages 6-16
What defines intellectual disability/mental retardation?
- Significantly subaverage IQ of
Mental retardation affects males more than females. T/F?
True
Men are affected 1.5x as often as females
*85% of MR are mild cases (IQ 55-70)
What are the different categories of MR?
1-2% Profound / IQ
What are prenatal causes of MR?
TORCH infections
Toxo, other (syphilis, AIDS, alcohol/drugs), rubella, CMV, herpes simplex
Perinatal causes of MR?
Anorexia Prematurity Birth trauma Meningitis Hyperbilirubinemia
Postnatal causes of MR?
Hypothyroidism Malnutrition Toxin exposure Trauma Psychosocial causes
Genetic causes of MR?
Down syndrome Fragile X syndrome (2nd most common cause of MR) PKU Prader Willi Angelman Williams syndrome Tuberous sclerosis
Most common inherited form of mental retardation?
Fragile X
FMR1 gene defect on X chromosome, M>F
Most common of learning disorders?
Reading, boys may be more affected than girls
What is ADHD? What are the types?
Inattention and/or hyperactivity and impulsivity greater than expected for age
Three types:
Predominantly inattentive
Predominantly hyperactive-impulsive
Combined
How do you dx ADHD?
At least 6 sx of either inattentiveness, hyperactivity, or both
- Persisted for at least 6 months
- Sx present to a degree that is maladaptive
- Onset prior to age 7
ADHD is more prevalent in boys. Does it go into adulthood?
Up to 60% of childhood cases will have sx into adulthood (impulsivity > hyperactivity)
First line treatment for ADHD?
CNS Stimulants
- Methylphendiate (Ritalin, Concerta, Focalin, Metadate)
- Dextroamphetamine (Dexedrine, DextroStat)
- Amphetamine salts (Adderall)
First line for ADHD cant be used. What else can you use?
If first line cant be used, use ALPHA-2 AGONISTS
- Clonidine
- Guanfacine
- can be used at adjuvant therapy to stimulants
What disorder can atomoxetine used for?
ADHD; non stimulant that is FDA approved
CNS stimulants are good long term options for ADHD. T/F?
False; long term efficacy is controversial
Boys > Females in autistic disorder, T/F?
True
Boys are 3-4x more likely than girls
Autism is associated with ______
Mental retardation (70% meet criteria of
Autism phenotypic findings? Genetic component?
May have higher peripheral serotonin levels
Increased head size
Persistent primitive reflexes
Abnormalities in EEG findings
YES genetic component; siblings have 22x risk vs general population
Two most important predictors of adult outcome in those with autism?
Level of intellectual functioning AND communicative competence
Childhood disintegrative disorder is associated with:
- Abnormal EEG findings
- Seizure disorder
- Various medical conditions like Landau-Kleffner, neurolipidoses, mitochondrial deficits, metachromatic leukodystrophy, CNS infection
What is tourettes?
Most severe tic disorder
- Multiple daily motor tics
- One or more vocal tics
- Onset before 18
- **Vocal tics may appear many YEARS after motor tic
What are the types of vocal tics seen in Tourettes?
Coprolalia - repetitive speaking of obscene words
Echolalia - exact repetition of words
How do you dx tourettes?
- Onset before 18
- Motor and vocal tics both present at some point, not attributable to CNS disease
- Tics occur many times a day, almost every day for >1 year
- No tic free period >3 months
- Change in anatomic location and character of tics over time
Describe course of sx of someone with Tourettes?
Sx peak in severity between 8-12 years old, decrease with puberty
Decrease sx/asymptomatic by adulthood
Tourettes has a high comorbidity with ______
OCD (40%)
ADHD (50%)
Neurochemical factors that contribute to Tourettes?
Impaired regulation of dopamine in caudate nucleus
and possibly impaired regulation of endogenous opiates and the noradrenergic system
Tx of Tourettes?
When tics become a source of impairment:
- Atypicals (e.g. risperidone)
- Alpha-2-agonists (e.g. clonidine, guanfacine)
- SEVERE? Use typicals (e.g. haloperidol, pimozide)
Do you have to be worried about withdrawal with antidepressants?
YES Most antidepressants have a withdrawal phenomenon - Dizziness - Headaches - Nausea - Insomnia - Fatigue TAPER, depending on dose and half life
Regarding SSRIs there is no relationship between plasma levels and efficacy or side effects.
TRUE
No relationship!
Why are SSRIs the most commonly prescribed antidepressant?
- Low incidence of side effects, resolve with time
- No food restrictions
- Much safer in OD
Which SSRI do you give to a pregnant women?
Fluoxetine
Which SSRI is also approved for use in children?
Fluoxetine
Schizophrenia prevalence in men vs women?
Men and women similarly affected
Men present around 20 and have more negative sx and more social impairment
Women present around 30
How does season affect schizophrenia?
People born in winter or early spring have a higher incidence of schizophrenia for unknown reasons
Should you screen for substance abuse in those with schizophrenia? If so, what?
Yes, substance abuse comorbid
Alcohol (most common)
Cannabis
Cocaine (least)
What is the downward drift hypothesis?
People with schizophrenia are unable to function well in society –> enter lower socioeconomic groups –> lower socioeconomic groups have higher rates of schizophrenia
What would you expect to see on CT of schizophrenia pt?
Enlarged ventricles
Diffuse cortical atrophy
Ketamine mechanism? How does it relate to those with schizophrenia?
NMDA antagonist (glutamate receptor)
In schizophrenics, they have lower # of NMDA receptors; correlates with psychotic symptoms observed with ketamine
NE, Serotonin, dopamine, GABA levels in schizophrenics?
Dopamine: increased
Serotonin: increased
NE: increased
GABA: decreased (decreased expression of the enzyme necessary to create GABA in the hippocampus)
How does onset of schizophrenia relate to prognosis?
Earlier onset and gradual onset = poor prognosis
Later onset and acute onset = better prognosis
How do positive or negative sx relate to prognosis?
Positive sx = better prognosis
Negative sx = poor prognosis
Mood symptoms in people with schizophrenia is associated with better or worse prognosis?
Mood sx associated with BETTER prognosis
Mechanism of typical and atypical neuroleptics?
Typical: D2 antagonist
Atypical: 5-HT2 and dopamine receptor antagonist
What kind of lab tests would you order for someone on atypical antipsychotics?
FBG
Lipids
BP, waist circumference, BMI
–> METABOLIC SYNDROME (increased risk with atypicals)
Beta blockers and _____ are known to exacerbate psychosis in predisposed patients
Beta blockers and digoxin
Prognosis of schizophreniform disorder?
Remember 1-6 months; >6mo is schizophrenia
1/3 recover completely
2/3 progress to schizoaffective or schizophrenia
Prognosis for schizoaffective disorder?
60% progress to schizophrenia
What is a brief psychotic disorder?
Psychotic sx just like in schizophrenia
Sx last from 1 DAY to 1 MONTH
Delusional disorder occurs more in _____ population
Older (>40)
Immigrants
Hearing impaired
Bizarre or nonbizarre delusions in delusional disorder?
NONbizarre delusions for at least 1 month (bizarre delusions are found in schizophrenia)
(cant meet criteria for schizophrenia, functioning in life not significantly impaired)
Folie a deux is also known as _______ and it’s characterized by:
Induced Psychotic Disorder
- Pt develops same delusional sx as someone he or she is in a close relationship with
Can someone have a manic episode for less than a week?
Yes if they are hospitalized, it can be any length of time
Otherwise, at least for one week
Persistently elevated, expansive, or irritable mood
Mixed manic/depressive episode is a psychiatry emergency. T/F?
True; same with manic episode
- Severely impaired judgement makes patient dangerous to self and others
MDD prevalence in men vs women?
Equal before menses and after menopause
Women 2x likely in reproductive years
Sleep changes in MDD?
- REM shifted to earlier in night
- Decreased stage 3/4 sleep
- Hypersomnia
- Multiple awakenings
- Initial and terminal insomnia (hard to fall asleep and wake up)
How does dexamethasone relate to MDD?
High cortisol is associated with MDD
- Hyperactivity of HPA axis as shown by failure to suppress cortisol by dexamethasone suppression test
Death of a parent before age 11 is associated with later development of ______.
MDD
So is pancreatic cancer
Neurotransmitter change in MDD?
Decreased brain and CSF 5-HT and 5-HIAA
How long do depressive episodes last if untreated in MDD?
Usually self limited
last 6-13 months
Which class of antidepressants is most lethal in OD?
TCAs
Side effects of SSRIs?
GI disturbances
Sexual dysfunction
Headache
Rebound anxiety
TCA side effects?
Orthostasis Weight gain Sedation Anticholinergic effects Can aggravate QTc prolongation
MAOI is used for _______ and has a major side effect of _____
Refractory depression
Orthostasis
Postpartum depression usually resolves without medication. T/F?
True
When is ECT used?
Unresponsive to pharmaco
Can’t tolerate pharmaco (pregnant, elderly)
Desire rapid reduction in sx (e.g. suicide risk)
During ECT, premedication with ______, then give ____ and ____
Premed with atropine, give anesthesia (propofol, ketamine, etc), muscle relaxant (succinylcholine)
Side effects of ECT
Retrograde and anterograde amnesia (usually disappears within 6 mo)
Headache, nausea, muscle soreness
Pharmacotherapy and psychotherapy is more effective in treating depression than either treatment alone. T/F?
TRUE
Atypical features of depression? Tx?
Mood reactivity (mood brightens in response to positive events)
Leaden paralysis (legs feel heavy)
Hypersomnia
Hyperphagia
Hypersensitivity to interpersonal rejection
If atypical depression? Use MAOI!
Dysthymia can never have psychotic features. T/F?
TRUE
If they have delusions or hallucinations with “depression” consider another dx like MDD or schizoaffective
High potency antipsychotic associated with heart block, ventricular tachycardia, etc?
Pimozide
Low potency antipsychotic that can cause bluish skin discoloration?
Chlorpromazine
- can also cause photosensitivity
- used to treat N/V and intractable hiccups
Mechanism for how antipsychotics cause hyperprolactinemia?
Blocks dopamine activity in tuberoinfundibular pathway –> prolactinemia –> galactorrhea, gynecomastia, amenorrhea, sexual dysfunction
Adjustment disorder prevalence in men vs women
Occurs 2x more in women
When should you think adjustment disorder?
Stressful life event –> maladaptive behavior/emotional sx that begin within 3 months, resolve by 6 months
–> causes significant impairment in daily functioning and interpersonal relationships
Tx of adjustment d/o?
Supportive psychotherapy!!!!!
Group therapy
Meds for symptoms like insomnia, anxiety, depression, etc
Common comorbidities of panic attacks?
MDD Bipolar Agoraphobia Substance abuse *Also linked to a higher rate of suicide attempts or ideation
How long does bereavement last?
Sx usually last up to 2 months
Hoarding disorder is treated with cognitive behavioral therapy and ____
SSRIs
What is panic disorder? Acute treatment? Long term?
Recurrent and unexpected panic attacks with 4 or more of things like palpitations, sweating, sob, chest pain, dizziness, fear of dying, etc
Immediate: benzos
Long term: SSRIs, SNRI, and/or cognitive behavioral therapy
First line treatment for specific phobia?
Specific phobia: fears specific object or situation
First line: BEHAVIORAL THERAPY (via exposure therapy)
*short acting benzos like lorazepam or alprazolam are effective in alleviating anxiety acutely but not first line for phobia because outweighed by rebound anxiety, dependence and cognitive impairment
How do you treat anorexia?
FOOD
Behavioral therapy, family therapy, weight gain programs
Low dose 2nd gen antipsychotics (e.g. olanzapine) may treat preoccupation with weight gain and food, can help cause weight gain
Benzos before meals for preprandial anxiety
How do you treat bulimia?
Antidepressants + therapy
- SSRIs are FIRST LINE; Fluoxetine is the only FDA approved one
- Therapy: CBT, interpersonal psychotherapy, family therapy, group therapy
First line for OCD?
SSRIs (high doses)
TCAs (clomipramine)
Functional neuroimaging of pts with social phobia (social anxiety disorder) shows MORE activity in ______
Amygdala
Insula
Performance anxiety is often successfully treated with:
beta blockers
atenolo, propanolol
How to treat social phobia?
Psychotherapy/desensitization
Severe? Some pharmacological:
- SSRIs
- Benzos
- Venlafaxine
- Buspirone (can augment treatment when used adjunctively with SSRIs)
Specific phobias are more common than social phobias. T/F? Specific phobias are more common in men vs women? T/F?
True, specific > social
False, women > men
PCP intoxication physical findings?
Nystagmus Dysarthria Hyperacusis Hypertension or tachycardia Muscle rigidity Ataxia Seizures or coma Numbness
Behavioral manifestations are very UNPREDICTABLE; can be sociable one minute and extremely violent the next.
PCP intoxication tx?
If nonpsychotic:
- Benzos for muscle spasms, seizures, sedation, agitation, anxiety
If agitated or psychotic:
- Antipsychotics (haldol is popular, or atypical antipsychotics)
- AVOID typical low potency antipsychotics because can increased PCP-induced hyperthermia, dystonia, anticholinergic effects and lower seizure threshold
Non pharm intervention for PCP intoxication?
Place in room away from stimulation, dark room
Avoid physical restraints because risk of muscle breakdown (but might need restraints initially)
What other drug is commonly used with PCP?
Marijuana; PCP often added to marijuana cigarettes; do UDS!
Chances of getting bipolar disorder is a first degree relative has it? What if both parents have it? What if your monozygotic twin has it? Dizygotic twin? General population?
1st degree: 5-10% Both parents: 60% Mono twin: 70% Dizygotic twin (same as 1st degree): 5-10% General population: 1%
First line for acute mania?
Antipsychotics
or Mood stabilizers (Lithium, Valproate, Carbamazepine)
**But mood stabilizers need gradual titration over several days for therapeutic blood levels so it would be less effective in controlling pts acute agitation
When should you think somatization disorder?
Multiple organ systems
Chronic
Onset BEFORE age 30
Seen multiple doctors
Tx of somatization disorder?
Regularly scheduled PCP visits with limited medical workup
Be slow with psychology, will likely refuse MH referral
Somatization disorder, conversion disorder, hypochondriasis are all more common in women vs men. T/F?
False; somatization and conversion are more in WOMEN
Hypochondriasis MEN = WOMEN
When would you see la belle indifference?
See it in conversion disorder where patients are calm and unconcerned when describing their symptoms
Common symptoms of conversion disorder?
Shifting paralysis Blindness Paralysis Paresthesia Mutism Seizures Globus hystericus (sensation of lump in throat)
Most patients with conversion disorder resolve spontaneously. T/F?
True Tx may include - Insight oriented psychotherapy - Hypnosis - Relaxation therapy
Hypochondriasis has to last for _____ (time)
At least 6 months; preoccupation with fear of having or contracting serious disease, based on misinterpreting bodily symptoms
Good prognostic factors for someone with hypochondriasis?
Higher SES
Treatment responsive anxiety or depression
Absence of comorbid medical conditions and personality disorders
How do you treat hypochondriasis?
Regularly scheduled visits to PCP
Comorbid anxiety or depression? Treat with SSRI or other psychotropic
CBT is the most useful of psychotherapies
Body dysmorphic disorder; seen in what kind of patient? onset?
Women > men
Unmarried > married
Onset between 15-20yo; usually gradual onset
Surgical/dermatological interventions are often successful in body dysmorphic disorder. T/F?
False!
How do you treat body dysmoprhic d/o?
NOT surgical/dermatological
SSRI’s helpful in 50%