Exam 4 part 2 Flashcards
Brand and class: Alprazolam
Xanax, benzodiazepine
Brand and class: Amitriptyline
Elavil
TCA
Brand and class: Buspirone
Buspar, misc. antianxiety agent
Brand and class: Citalopram
Celexa
SSRI
Brand and class: Clonazepam
Klonopin, benzodiazepine
Brand and class: Desvenlafaxine
Pristiq, SNRI
Brand and class: Diazepam
Valium, benzodiazepine
Brand and class: Doxepin
Sinequan, TCA
Brand and class: Duloxetine
Cymbalta, SNRI
Brand and class: Escitalopram
Lexapro, SSRI
Brand and class: Fluoxetine
Prozac, Sarafem
SSRI
Brand and class: Gabapentin
Neurontin, anticonvulsant
Brand and class: Hydroxyzine
HCL- Atarax
Pamoate- Vistaril
Antihistamine
Brand and class: Lamotrigine
Lamictal
Anticonvulsant
Brand and class: Lorazepam
Ativan
Benzo
Brand and class: Paroxetine
Paxil, Pexeva
SSRI
Brand and class: Pregabalin
Lyrica, anticonvulsant
Brand and class: Propranolol
Inderal
Beta blocker
Brand and class: Sertraline
Zoloft
SSRI
Brand and class: Topiramate
Topamax, Trokendi
Anticonvulsant
Brand and class: Venlafaxine
Effexor
SNRI
What is the most common psychiatric disorder in the US?
Anxiety disorders
Epidemiology and risk of anxiety disorders
Females > males Age: median onset 21 years Genetic component, not as strong as depression Stress Low socioeconomic status Adverse childhood experiences (ACEs)
PANDAS
pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections.
Sudden onset of symptomatology (most commonly OCD) that gradually improves following strep infection
Medical causes of anxiety
CV disease- MI, CHF, HTN, arrhythmias
Endocrine/metabolic disorders- DM, hyperthyroidism, cushings disease, electrolye abnormalities, anemia
Neurologic disorders- migraines, seizures, uncontrolled pain, stroke, neoplams
Resp disease- COPD, asthma, pulmonary embolism, pneumonia
Drug induced anxiety
Anticonvulsants Antidepressants Antihypertensives- clonidine, felodipine Antimicrobials- Isoniazid, FQs Theophylline Corticosteroids Sympathomimetics- albuterol, epinephrine Thyroid hormone Stimulants- cocaine, meth
Pathophysiology of anxiety
Noradrenergic- LC stimulates NE (stress hormone), anxiolytics inhibit LC firing.
GABA- GABA inhibits 5-HT, NE, DA. Enhancing GABA causes anxiety.
Serotonin- 5-HT is inhibitory in raphe nuclie. Anxiety may be from abnormal function of release and/or uptake
GAD diagnosis
Excessive anxiety and worry present most days for >6 months about a number of activities.
Associated with >3:
Restlessness, fatigue, irritability, difficulty concentrating, muscle tension, sleep disturbance
Social anxiety disorder diagnosis
Marked fear or anxiety about social situations involving possible scrutiny by others. Duration > 6 months.
Panic attack diagnosis
Abrupt surge of intense discomfort or fear that occurs in minutes with >4:
Palpitations/increase HR Sweating Trembling Smothering Choking sensation N/abdominal distress Chest pain/discomfort Dizziness Chills or hot flashes Parasethsias Derealization/depersonalizations Fear of losing control Fear of dying
Panic disorder
> 1 panic attack followed by > 1 month of:
Consistent worry/concern about additional panic attacks or their consequences
Significant maladaptive change in behavior related to the attacks
Anxiety rating scales
GAD-7
Panic disorder severity scale
Social phobia inventory
Management of anxiety
Psychological therapy -Cognitive behavioral therapy, exposure therapy Stress management Exercise Drugs
Kava Kava
Effectve in anxiety, but takes 8 weeks for onset
Significant concern for hepatotoxicity
Valerian
Limited data in anxiety, dont use
Peppermint
Limited data in anxiety
Dont use
Lavender
Silexan 80mg QD effective for anxiety
Low risk of AE
Pharmacologic options for anxiety
Benzodiazepines, SSRIs, SNRIs, TCAs, buspirone, hydroxyzine, propranolol, pregabalin, atypical antipsychotics, antidepressants
Anxiety therapy targets
F/U every 1-2 weeks until stable
Efficacy: 4-6 week trial
Maintenance- typically 12+ months at full dose
GAD/panic algorithm
SSRI OR SNRI +/- BZD (BZD therapy up to 6 weeks, then taper down)
Inadequate response- add other 1st or 2nd line agents or BZD
When effective, continue for 12-24 months
1st line options for GAD
SSRIs: Escitalopram, paroxetine, sertraline
SNRIs: duloxetine, venlafaxine XR
Pregabalin
1st line for PD
SSRIs
SNRI- venlafaxine XR
1st line for SAD
CBT
SSRI: escitalopram, fluvoxamine, paroxetine, sertraline, fluoxetine
Venlafaxine CR
Pregabalin
BZD MOA
Binds to GABAa receptor at y subunit and acts to increase affinity for GABA. Inhibits excitatory activity and increases rate of Cl channel opening.
BZD place in therapy for anxiety
Not everyone needs BZD, reserve for high/crisis level anxiety
Acute use- PTSD
MAX 6 week course then taper dose, long term use only for severe refractory cases
PK of BZDs
Lorazepam
Oxazepam
Temazepam
Liver
AE of BZDs
CNS depression, psychomotor impairment, confusion, aggression, disinhibition, amnesia
BZD interactions
CNS depressants
BBW: use with opioids
Alprazolam, chlordiazepoxide, clonazepam, diazepam- 3A4 susbtrates, fluvoxamone, grapefruit juice, CNS depression
BZD withdrawal-
Common- anxiety, insomnia, irritability, muscle aches, tremor, anorexia, HTN, tachycardia
Less common - confusion, nausea, depression, hyperreflexia, blurred vision
Rare- seizures, delirium, psychosis, catatonia
BZD tapering
Consider: dose, duration of exposure Symptoms of withdrawal often subside in 1-2 weeks Onset varies depending on T1/2 of drug Outpatient- decrease 10-25% q 1-2 weeks Inpatient- taper dose over 1-2 weeks
BZD OD
CNS depression, respiratory depression
Not likely to be fatal if only substance involved
Reversal agent: flumazenil
Anxiety vs depression dosing
Anxiety needs 1/2 doses of depression
Which SSRIs are approved for anxiety?
GAD0 escitalopram, paroxetine
Panic-fluoxetine, paroxetine, sertraline
OCD- fluvoxamine, fluoxetine, paroxetine, sertraline
PTSD- paroxetine, sertraline
Which SNRI has the most data for anxiety?
Venlafaxine
Buspirone (Buspar)
MOA: Partial agonist at 5-HT 1A receptor
2nd line for GAD, augmenting or monotherapy
Takes about 2 weeks to work
Avoid in severe/ renal impairment
AE of buspirone
Dizziness, nausea, HA, akathisia (restlessness)
Hydroxyzine
MOA: blocks histaminic receptors and serotonin receptors, CNS depression
2nd line for GAD
Rapid onset
When is hydroxyzine useful?
In GAD pts with abuse history, insomnia, pediatric anxiety