Psychiatry Flashcards
(94 cards)
Bipolar Disorder subtypes
- Bipolar I: at least 1 manic or mixed episode
- Bipolar II: at least 1 MDE and hypomanic episode
- Rapid cycling: 4 or more episodes (MDE, manic, mixed, or hypomanic) in 1 year
- Cyclothymic
Neurocognitive Disorder (Dementia) (Work up)
- A careful history and physical is critical. Serial mini-mental state exams should be performed
- Rule out treatable causes; obtain CBC, Rapid pasma reagin (RPR),Comprehensive metabolic panel (CMP), Thyroid function tests (TFTs), HIV, B12/folate, ESR, UA, and head CT or MRI
Neurocognitive Disorder (Dementia) (Definition and Presentation)
- Decline in cognitive functioning with global deficit, but level of consciousness is stable
- Memory impairment (amnesia [partial or total) and 1 or more of the following:
- Aphasia (language impairment)
- Apraxia (inability to perform motor activities)
- Agnosia (inability to recognize previously known objects/places/people)
- Impaired executive function (problems with planning, organizing, and abstracting) in the presence of clear sensorium
- Personality, mood, and behavior changes are common (e.g., wandering and aggression)
- Only 15% is reversible
Postpartum Psychosis
- Within 2-3 weeks after birth
- Depression, delusions and thoughts of harm
- May have thoughts of harming baby
- Rx: anti-psychotics, lithium, and possibly anti-depressants
Korsakoff Syndrome
- Amnesia (anterograde > retrograde)
- Caused by B1 deficiency and associated with mammillary bodies destruction
- Seen in alcoholics as a late neuropsychiatric manifestation of Wernicke’s encephalopathy
- Confabulations are characteristic
Bipolar Disorder facts
- Both sexes affected equally
- Prevalence is 1% for type I and 4% for type II
- Average age of onset 20
- Up to 10-15% commit suicide
- Most genetic of all psychiatric disorders
- High SES more likely
Bipolar Disorder treatment
- Acute mania:
- acute therapy: anti-psychotics
- Maintenance therapy: mood stabilizers (lithium, carbamazepine, valproic acid, lamotrigine
- Benzodiazepines for refractory agitation
- Bipolar depression: mood stabilizers +/- anti-depressants. Start mood stabilizers first to avoid inducing mania. ECT for refractory cases
- Bipolar II with predominantly depressive features: anti-depressants can be augmented with low dose lithium
Pervasive Developmental Disorders (PDD)
Definition, Findings, Types, Associations
- Abnormal or impaired social interaction and communication together with restricted activities and interests evident before age of 3
- Patients fail to develop normal social behaviors (e.g., social smile, eye contact) and lack interest in relationships
- Development of spoken language is delayed or absent
- Children show stereotyped speech and behavior (hand flapping) and restricted interests (preoccupation with parts of objects
- It includes Autism, Asperger’s syndrome, Rett disorder and childhood disintegrative disorder
- Associated congenital conditions are tuberous sclerosis and fragile X syndrome
Major Depressive Disorder subtypes
- Psychotic features: mood-congruent
- Post-partum: occurs within 1 month post-partum
- Atypical: weight gain, hypersomnia, and rejection sensitivity
- Seasonal
- Double depression: MDE in a patient with dysthymia
Dysthymia
- Presence of depressed mood that lasts most of the day and is present almost continuously for more than 2 years
- The patient is functional but at suboptimal level
- Rx: anti-depressants and psychotherapy
Anxiety (Neurotransmitter Changes)
- Increased NE
- Decreased GABA and 5-HT
Cluster C Personality Disorders
Other name, Enumerate, Clinical dilemma, Strategy
- Anxious and Fearful “Worried or Wimpy”
- Obsessive-Compulsive, Avoidant, Dependent
- Patients are controlling and may sabotage their treatment. Words may be inconsistent with actions
- Avoid power struggles. Give clear recommendations, but do not push patients into decisions
Asperger’s syndrome
- Boys > Girls
- Normal IQ and language development
- Preoccupied with rules
- Rx: improve relationships with others
Attention and Info processing deficits in schizophrenia
- Smooth pursuit eye movement (SPEM): 80% of patients have impaired capacity of following a slow moving target which showed as saccadic eye movement
- Prefrontal cortical (PFC) impairment: decreased physiological activity when faced with cognitive tasks, impaired performance on the Wisconsin Card Sort Test (WCST) [sensitive to prefronatl dysfunction]
Schizophrenia Prognosis
- 33% lead normal life
- 33% experience symptoms but function in society
- 33% require frequent hospitalization
Major Depressive Disorder treatment
- Cognitive Behavioral Therapy (CBT)
- Anti-depressants: SSRIs are the first line: effective in 50-70% of patients. Allow 2-6 weeks to take effect and treat for 6 or more months
- CBT combined with anti-depressants is more effective than either treatment alone
- Electroconvulsive therapy (ECT):
- Safe, and highly effective and often lifesaving that reserved for refractory depression or psychotic depression or if rapid improvement in mood is needed
- May be used for intractable mania and psychosis. Usually requires 6-12 treatments
- S/E: postictal confusion, arrhythmia, headache and anterograde amnesia
- C/I: recent MI/stroke, intracranial mass and high anesthetic risk
- Phototherapy
- Transcranial magnetic stimulation (TMS): not as effective as ECT
Postpartum Depression
- Within 1-3 months after birth
- Depressed mood, weight changes, sleep disturbances, and excessive anxiety
- May have negative feelings toward baby
- Rx: anti-depressants
Illness Anxiety Disorder (Hypochondriasis)
Diagnosis and Treatment
- Preoccupation with or fear of having serious disease despite medical reassurance
- Rx: psychotherapy
Major Depressive Disorder differential diagnosis
- Mood disorder due to medical condition (hypothyroidism, Parkinson’s disease, CNS neoplasm, other neoplasms [like pancreatic cancer], stroke [especially ACA stroke], dementia, parathyroid disorders)
- Substance induced mood disorders (illicit drugs, alcohol, anti-hypertensives, corticosteroids and OCPs)
- Adjustment disorder with depressed mood
- Normal bereavement
- Dysthymia
Autism
- Boys > Girls
- 80% IQ below 70
- Language development delay
- Linked to chromosomes 11 and 15
- Rx: behavioral techniques (shaping), if aggressive give anti-psychotic medications (risperidone)
Huntington’s Disease (Neurotransmitter Changes)
- Decreased GABA and ACh
- Increased dopamine
Bulemia Nervosa
Facts, Associations, Findings, Diagnosis
- Risk factors: female gender and low self esteem
- Low baseline serotonin concentrations
- One-third have alcohol or drug problem
- Associated with mood disorders and OCD
- Patients have normal weight or are overweight
- Dorsal hand calluses from induced vomiting (Russell sign), parotitis, enamel erosion, electolyte disturbances and alkalosis
- Binge eating with inappropriate compensatory behavior occurring weekly for at least 3 months
Left vs Right cerebral hemispheres
- Left is dominant in 97% of population. 60-70% in left handed persons. Language, logic, math and analytic thought. Stroke is more likely lead to depression
- Right holistic thought, intuition, creativity, art and music. Stoke is more likely lead to apathy and indifference
Rett disorder
- Girls > Boys
- Low IQ and delayed language development
- A genetic neurodegenerative disorder (X-linked dominant) that presents after 5 months of normal development
- Microcephaly, hand wringing, with progressive encephalopathy and ataxia
- Rx: symptomatic, behavior therapy for self-injurious behavior, and physiotherapy for muscular dysfunction