Board Vitals: Psych Extra Review Flashcards
In order to meet criteria for PTSD, how long must one have sxs for?
Sxs must last > 1month
At what age do most panic disorders begin?
Usually young adults, but can come later. To meet criteria for Panic disorder, panic attacks must be recurrent.
In what context do panic attacks first occur?
1st panic attack appears to occur “out of the blue” when the pt is doing every day things BUT there tends to be a correlation with a major life event
What is SSRI discontinuation syndrome?
SNRIs and SSRIs have short half-lives (venlafaxine, paroxetine) so can cause w/d w/ single missed dose. W/d sxs can be allevaited by tapering drug. Discontinuation sxs: ataxia, GI and flu-like sxs, headache, nausea, fatigue, excessive sweating, paresthesias, sensory and sleep disturbances, V/A hallucination, anxiety, crying spells, irritability and aggressiveness, restlessness, dysphoria, tremor, vertigo, irregular BP, dizzy
What is the onset of postpartum mood disturbances (i.e. maternal blues, depression, psychosis)?
Onset w/in 4wks of delivery
What are the preferred SSRIs in treating postpartum depression in breastfeeding mothers?
Sertraline and paroxetine levels are low to undetectable in breast milk. This is opposite to Fluoxetine, which has been shown to be the most efficacious but appears in higher levels in infants that are breast fed.
What is a bezoar?
A bezoar is a ball of swallowed foreign material (usually hair or fiber) that collects in the stomach and fails to pass through the intestines.
What is the rate of completed suicide among patients with Bipolar 1?
10-15% of Bipolar 1 patients die by suicide
For what period of time must the sxs of GAD be present in order to make the diagnosis?
At least 6 months
In rare cares, OCD and/or tic disorders has been associated with which microbial infection? Think pediatric population.
Group A strep is associated with OCD and neurological abnormalities with an abrupt prepubertal onset. PANDAS = Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections, a pediatric neurological disease in which a subset of children exhibit a rapid onset of OCD and/or tic disorders following group A beta-hemolytic streptococcal infections (S. pyogenes)
What medical conditions cause mania sxs? What drugs cause manic sxs?
Medical Conditions: CNS tumors, syphilis, delirium, encephalitis, influenza, multiple sclerosis, Q fever
Drugs: amphetamines, cocaine, isoniazid, steroids and other stimulants
What percentage of stroke victims will dependent major depression?
1/3 -1/2 of all stroke victims develop major depression and there is limited research that suggests that tx with an SSRI can reduce the rates of depression and mortality.
It is hypothesized that what brain structure might be related to the development of generalized anxiety disorder?
Amygdala
What is the typical course and prognosis for intermittent explosive disorder?
Onset usually in late teens-20s and in most cases it subsides by the time the patient is 40.
What are the common anti-cholinergic side effects of TCA’s?
Blurred vision, urinary retention, constipation, dry mouth
What are common inducers of the CYP 3A4 system?
Carbamazepine, phenytoin and oxcarbazepine
What is the lifetime prevalence rate of panic disorder?
2-5%
What percentage of people with bipolar disorder attempt suicide?
25-50% report at least one suicide attempt in their lifetime, usually occurring most commonly during a period of depression.
What is are the 2 most effective treatments for OCD?
SSRI - Fluvoxamine (Luvox) - only approved for OCD
TCA - Clomipramine
How long must sxs be present for a patient under 18 yo to be dx w/ a specific phobia?
6 months
What is the best long-term tx for GAD?
CBT + SSRI
What percentage of patients with Bipolar I disorder have more than one manic episode?
> 90%
What is referred to as “rapid cycling”?
If you have 4 or more episodes per year of a moos episodes in 1 year (major depressive, manic, mixed, etc).
Definition of sensitivity?
True Positive / (True Positives + False Negatives)
What instruments are best used to estimate IQ?
Wechsler Intelligence Scale for Children (WISC) or the Standford-Binet Intelligence Scale
What are IQ scores for children with mild, moderate, severe and profound mental retardation?
Mild retardation: 50-70
Moderate retardation: 35-49
Severe retardation: 20-34
Profound retardation:
What is Tourette disorder?
Tourette disorder is a syndrome of multiple motor and vocal tics that occur daily for at least 1 year (onset before age 18), men>women, and is associated with attention deficits and obsessive and compulsive behaviors.
What is the indication for pimozide? What will you need to monitor while patient is on this drug?
Pimozide is a high potency, 1st generation neuroleptic. MOA: Dopamine D2 receptor antagonism. Used for severe tics. Must monitor QTc with ECG.
What to patients with Tabes dorsalis present with?
Tertiary syphilis –> demyelination of dorsal columns and roots –> impaired sensation and proprioception –> sensory ataxia of lower extremities –> wide-based gait
Argyll-Robertson pupil –> pupil accomodation but no reaction to light
+ Romberg sign and absence of DTRs
What tumor should be considered in a differential diagnosis of a patient presenting with anxiety?
Pheochromocytoma: tumor of chromaffin cells, usually occurring in the adrenal medulla.
What is the necessary somatic complaint profile in order to meet criteria for Somatization disorder?
At least 4 pain sxs, 2 GI sxs, 1 sexual or reproductive sxs and 1 pseudoneurologic sxs.
What is the standard workup for delirium?
- CBC + differential
- Electrolytes + LFTs
- BUN + creatinine
- VDRL
- Vitamin B12 + folate
- Urinalysis + urine toxicology screen
- TSH
- Calcium, magnesium, phosphorus, glucose
- Peripheral oxygen saturation
- CXR, ECG, mental status and physical exam
What is the classic presentation of PCP intoxication?
Nystagmus, HTN, Tachy, decreased responsiveness to pain, muscular rigidity, violence or aggressive tendencies w/ or w/o psychotic sxs.
What is the classic presentation of cocaine withdrawal?
Intense dysphoric mood, fatigue, increased appetite, hypersomnia, unpleasant dreams and psychomotor agitation or retardation.
What is the classic presentation of marijuana intoxication?
Conjunctival injection, increased appetite, dry mouth, euphoria, impaired time perception.
What is the classic presentation of opioid withdrawal?
Pilo-erection, diaphoresis, abdominal cramps, yawning, lacrimation, muscle aches, DILATED pupils (mydriasis).
In general, drugs of abuse are more addictive if they have what characteristic?
Shorter onset of action
In general, more severe drug withdrawal syndromes are seen drugs with short or long half-lives?
Short half-lives
What percentage of patients after one manic episode will have a repeat manic episode within 5 years?
90%
What is classified under Axis I?
Mental illness including substance abuse and developmental disorders
What is classified under Axis II?
Personality disorders and mental retardation.
What benzodiazepines can be used for alcohol withdrawal with abnormal liver function tests?
Lorazepam or oxazepam (Serax) would be chosen b/c they are primarily metabolized and eliminated renally instead of through the liver.
What is the drug of choice for managing the agitated or confused patient with delirium?
Haloperidol is the drug of choice NOT thioridazine, benztropine nor diphenhydramine since they all have anticholinergic properties that exacerbate delirium. Lorazepam in older patients may have a paradoxical effect and exacerbate agitation and confusion.
What is perphenazine?
Perphenazine is a traditional neuroleptic.
A common side effect of SSRIs that may mimic a symptom of depression is?
Insomnia
What are important CYP450 inducers?
Smoking (1A2)
Carbamazepine (1A2, 2C9, 3A4)
Barbiturates (2C9)
St. John’s wort (2C19, 3A4)
What are important CYP450 inhibitors?
Fluvoxamine (1A2, 2D6, 3A4) Fluoxetine (2C19, 2C9, 2D6) Paroxetine (2D6) Duloxetine (2D6) Sertraline (2C19)
….all SSRIs ..except Duloxetine, which is a SNRI.
What is Prozac?
Prozac is Fluoxetine a SSRI.