Random psych facts Flashcards
What are symptoms of water intoxication?
tremor, ataxia, restlessness, diarrhea, vomiting, polyuria, stupor
What is difference between uncomplicated grief and pathological grief?
worthlessness, suicidality, excessive guilt, hallucinations, psychomotor retardation
pergolide, bromocriptine, pramipexole, and ropinirole are what types of drugs?
Dopamine agonist used to treat Parkinson’s disease. They have lower incidence of dyskinesias than levodopa.
Side effects: hallucinations, sedation, othostatic hypotension
Buspirone is what of 5HT 1A
partial Agonist
Abilify is what of 5HT 1A and what at the D2 receptor and what at the 5HT 2A receptor?
Partial agonist at 5HT1A and D2
Antagonist at 5HT2A
Ziprasidone inhibits serotonin and norepinephrine reuptake, what receptors does it affect?
Agonist 5HT1A
Antagonist 5HT2A, D2
Are LH and FSH decreased or increased in anorexia?
Decreased
Eye findings in schizophrenia
Disorder of smooth visual pursuit and disinhibition of saccadic eye movements (thought to be due to pathology in frontal lobes)
Also present in first degree relatives
What happens when antipsychotic medications block dopamine in the tuberoinfundibular tract?
Elevated prolactin which can lead to galactorrhea and amenorrhea
What has the greatest comorbidity with pathological gambling?
MDD
What are some keys to a psychogenic seizure?
- lack of aura, no cyanotic skin changes, no self injury, no incontinence, no postictal confusion, asynchronous body movements, absent EEG changes, seizure activity being affected by suggestion of the doctor. prolactin will no be elevated by psychogenic seizure
Pathological gambling is in what category of DSM 5?
Substance relate and addictive disorders
Dissociative fugue
travel or wandering that is associated with amnesia for identity or other important biographical information
Depersonalization
Outside observer with respect to ones own thoughts feeling sensation body or actions
Derealization
detachment with respect to one’s surroundings
what type of metabolic derangement do bulimic patients develop?
hypochloremic alkalosis
Highest risk of becoming violent?
substance abusers
How does serotonin affect platelets?
evidence suggests that there are serotonin receptors on surface of platelets that can modify and reduce platelet aggregation
- SSRI after MI has been shown to increase body serotonin-making future heart attack less likely
What is the treatment for urinary retention?
bethanechol
What are common side effects for TCAs?
- constipation, dry mouth, blurry vision, sweating, orthostatic hypotension, sedation, lethargy, agitation, slowed cardiac conduction (prolonged PR and QRS interval) and tachycardia
Which antidepressants can be used for treatment of gastric ulcer because of histamine blockade?
Amitriptaline, doxepin, trimipramine
in the psychotic pt, the defense mechanism of projection takes the form of what?
persecution-a pts own impulses and hostilities are projected onto another
Schizophrenia how long must active symptoms be present?
1 month-
What are amoxapine and maprotiline?
tetracyclic antidepressants
amoxapine has significnat dopamine blocking and can produce side effects similar to antipsychotics
maprotiline-one of the most selective inhibitors of NE reuptake- mild sedative and anticholinergic side effects- increased incidence of seizures-long half life of 43 hours
Carbamazepine is an inducer of CYP2C19 and 3A4, what levels are not affected by carbamazepine?
clozapine (it is a substrate of CYP 1A2)
What does tobacco smoking induce? What medications does this effect?
CYP1A2
- amitriptyline, fluvoxamine, clozapine, olanzapine, haloperidol, imipramine
NOT RISPERIDONE (substrate of 2D6- can be lowered by dexamethosone and rifampin and increased by buproprion, citalopram, clomipramine, doxepin duloxetine, escitalopram, prozac, paroxetine, sertraline, perphenazine)
Is depression a risk factor for ischemic stroke?
Nope
Risk factors: older age, male, low socioeconomic status, DM, obesity, cig, excess alc, family hx, art hypertension, prior stroke or ischemic attack, asymptomatic carotid bruit, dyslipidemai, hyperhomocysteinemia, oral contraceptive use, blood dyscrasias (protein c or s deficiency, antithrombin 3 deficiency, factor 5 leiden deficiency)
What is part of thought content?
- obsessions
- delusions
- ideas of reference
- phobias
- SI
- HI
- depersonalization
- derealization
- neologisms
What is part of thought process?
word salad
flight of ideas
circumstantiality
tangential
clang associations
perseveration
goal directed ideas
Which TCAs are tertiary amines?
doxepin
imipramine
amitriptaline
clomipramine
trimipramine
TCA secondary amines
despiramine
nortriptaline
protriptyline
Are tricyclics metabolized by CYP2D6?
yes, and cimetidine is an inhibitor
Treatment of tics in Tourette’s syndrome
best treated by neuroleptics: haloperidol, pimozide
Also atypical antipsychotics.
Also fluphenazine and molinodone
clonidine
botulinum toxin A-blepharospasm and eyelid motor tics
Not protriptyline and other antidpressants
dementia pugilistica, Posttraumatic dementia
severe memory and attentional deficits and extrapyramidal signs
-Carriers of apo E4 (which resides on chromosome 19) are at increased risk of posttraumatic dementia as well as Alzheimer’s disease
Does downregulation of β-adrenergic receptors correlates most closely with time needed for clinical improvement in patients with TCAs?
yes
What are treatments for enuresis in childhood?
- Bell and pad behavior conditioning
TCAs: amitriptyline and imipramine
Desmopressin
What is abreaction?
emotional release after recalling a painful event, part of psychodynamic therapy
What are the least sedating TCAs?
desipramine and protriptyline
What are moderately sedating amitryptalines?
imipramine, amoxapine, nortriptyline, maprotilline
What are the most sedating TCAs?
amitriptyline
trimipramine
doxepin
Does Cabamazepine lower oral contraceptives?
yes
Should cabamazepine be taken with MAOIs?
NO
What does combining carbamazepine and clozapine increase the risk for?
bone marrow suppression
What is IQ
mental age divided by chronological age x100
What medications for controlling aggression in antisocial pts?
- valproate and carbamazepine
What medication has been used in narcisstic personality?
lithium for mood stabilization and antidepressants (poor rejection tolerance and susceptible to depression)
What is reinforcement in interviewing?
consists of brief phrases such as uh-huh okay go on, pt understants encouragement to keep talking
tourette’s syndrome
- more common in boys than girls 2-10
- both motor and vocal tics must be present to meet criteria for the disorder
- ADHD, OCD, CD
- hereditary
Treatment:
tics: conventional or atypical neuroleptics
guanfacine and clonidine are useful for tics and ADHD
SSRI OCD
caudate neurons have many D2 receptors, blockade of the caudate D2 receptors causes what? overstimulation causes what
bradykinesia
overstimulation: tics and extraneous motor movements
gnaser’s syndrome
dissociative disorder- giving approx answers or talking past the point
male prisoners most commonly affected
-varient of malingering with possible 2ndary gain
capgras’ syndrome
systematized delusion in which the patient feels that a familiar person is an unfamiliar imposter
What can increase lithium levels?
ibuprofen
thiazaide diurects
ACEi
what can be used to treat lithium induced nephrogenic diabetes insipidus?
amiloride
3 hydroxy benzodiazepines are metabolized by what and have no active metabolites
glucuronidation
- oxazepam, lorazepam, temazepam
what is often used to treat aggression in pts with schizophrenia, prisoners, CD, MR
lithium
other drugs include anticonvulsants and antipsychotic
where does the mesolimbic-mesocortical pathway project from and to
from the ventral tegmental area to many areas of the cortex and limbic system
how does clonidine work
presynaptic alpha 2 receptor agonist
- reducing the amount of norepinephrine that is released from the synaptic bouton
- decreases sympathetic tone and bodily arousal and activation
pts at high risk for ect
those with space-occupying lesions in the CNS, those with increased intracranial pressure, those at risk for cerebral bleed, those who have had a recent myocardial infarction, and those with uncontrolled hypertension.
patient-controlled anlagesia
pts who control their won dosing end up using less pain medication than those who have to ask for the medication and wait for the doctor write an order
- they also have far better pain control
intermittent explosive disorder
- more common in men
- unpredictable episodes
- predisposing factors: underpriviledged or tempestuous childhood, childhood abuse, and early frustration and depreivation
- decreased cerebral serotonergic transmission and low CSF levels of 5 hydroxyindoleacetic acid and high levels of testosterone in men
treatment: mood stabilizers
SSRI and tcas can also be effective in reducing aggression
- strong comorbidity w/ fire setting, substance abuse and eating disorders
habit reversal
awareness training and then competing response training-(develop a competing response)
can you do cingulotomy for OCD?
yes
complication: seizures
DID
two or more distinct identities or personality states that recurrently take over the person’s behavior
- dissociative amnesia- inability to recall important personal information
treatment: insight oriented psychotherapy, hypnotherapy may be helpful
- antipsychotics often unhelpful
- antidpressants/anxiolytics may be helpful in addition to therapy
- anticonvulsant mood stabilizes have shown some efficacy in certain studies
how often is wbc taken w/ clozapine?
weekly for first 6 months then every 2 weeks then month after 1 year
- when treatment stopped WBC taken every week for 4 weeks
lithium toxicity
> 2.5meq/L
-discontinuation and vigorous hydration
4 or signs of serious lithium toxicity (nephrotoxicity, convulsions, coma)
- hemodialysis every 6-10 hours until level is no longer toxic and pts symptoms remit
random reinforcement
reward is given only a fraction of the time at random intervals
primary reinforcer vs. secondary reinforcer
primary reinforcer: independent of previous learning-biological need to eat
secondary reinforcer: based on previous learning-rewarding a child w/ a present when does something well
best way to teach a new behavior
continuous reinforcement
late-onset schizophrenia
more often in women than men
prognosis seems to be more favorable when onset is late
often have more paranoia
beginning age 45
RLS
must persist at least 3 months
risperdal consta
12.5, 25, 37.5, 50mg
2 week intervals
3-4 oral week overlap
unreconstituted drug must be refigerated then mixed with sterile water then administered in deltoid or gluteous within 6 hours
for ECT to be effective the seizure should last ..
25 seconds
what are the indications for ECT maintenance
severe medication side effects and intolerance
psychotic symptoms or severe symptoms
rapid release after a successful initial round of treatments
What medications should be discontinued prior to ECT?
benzos, lithium (postictal delirium and can prolong seizure activity), clozapine, bupropion (late appearing seizures)