Thought And Mood Flashcards
Antidepressants
SSRIs, SNRIs, tricyclic antidepressants, MAOIs
General considerations for antidepressants
Usually start with SSRIs/SNRIs bc safest; all have risk of SI, mental imbalance—assess suicide risk (may start meds in patient or daily checks if SI is present); monitor for 4-8 weeks for efficacy; can inc dose, switch drug or class, add second drug
SSRIs MOA
Inhibit Sr reuptake which keeps more Sr in the synapse and dec dep and anx sx
SSRI SE
Wt gain, GI (N/V/D, constipation, dry mouth), Dec sex drive; Sr sx—2-72 hours after tx—AMS, inc occurrence with MAOIs and other serotonergic drugs, withdrawal sx—dizzy, HA, sensory disturbance, tremor, anxiety, dysphoria; Suicidal risk, small risk of pulmonary HTN in neonates and abstinence syndrome during pregnancy
SSRI NC
May play with dose to Dec SE, can’t abruptly stop, be careful if pregnant, monitor suicidal risk
Fluoxetine (Prozac), sertraline (Zoloft), escitalapram (Lexapro) and NC
SSRI; 2nd gen drug; therapeutic benefit in 3-4 weeks, can’t take with MAOIs
Venlafazine (Effexor) MOA
SNRI; blocks reuptake of Sr and NOR uptake leaving more in the synapse
Venlafzine SE
Nausea, HA, anroexia, insomnia, somnolence, sexual dysfunction, w/d sx, sweat, blurred vision, inc LFTs with dulxetine—liver; CI with MAOIs
Amitriptyline (Elavil)
Tricyclic antidepressant
tricyclic antidepressants
More severe intx; used for long time, good efficacy, SE profile tolerable; more inexpensive; ASSOCIATED WITH FATAL OVERDOSES, can inc SI; also tx neuropathic pain and nocturnal enuresis
Tricyclic antidepressants MOA
Block reuptake of NOR and SR (monoamine transmitters), making more available in the synapse
Anticholinergic SE of TCAs
Hot as a hare, dry as a bone, blind as a bat, red as a beet, mad as a hatter—get hot, dry mucus membranes, blurry vision, turn red, confusion
TCA SE
Sedation, orthostatic hypotension, sex dysfunction, cardiac toxicity; hypertensive crisis when given with MAOIs
Phenelzine (Nardil)
MAOIs; used for refractory depression (nothing else working); better for atypical depression (diff sx)
MAOI probs
Cause hypertensive crisis when taken with other drugs and tyramine
MAOI MOA
Inhibit monoamine oxidase which is found in liver, intestinal walls, and neuron terminals and usually converts NOR, 5HT, and Dp to inactive form; so MAO inc availability of NTs at the synapse
MAOI SE and NC
Food drug intx—tyramine rich foods like aged cheese, smoked meat, red wine, anything aged or smoked, can make you on edge, orthostatic hypotension, rapid inc in BP, stroke, coma when taken with tyramine or other intx drugs (ephedrine, antihypertensive SSRI, TCA, merperidine)
Bupropion (Wellbutrin)
Atypical antidepressant similar to amphetamine, stimulant effect, Dec appetite; 1-3 weeks for effect; unclear MOA
Bupropion SE
Seizure, agitation, HA, dry mouth, weight loss, GI upset, dizzy, tremor
Ketamine
Atypical antidepressant and painkiller; low dose—works for refractory depression and extreme depression—helps with SI
High dose ketamine SE
Perceptual disturbances—tripping/hallucinate, dissociation
Trazadone (Oleptro)
Second line agent of atypical antidepressant; blocks 5HT reuptake, minimal effectiveness in depression, often used to help with anxiety and insomnia
Benzodiazepines
Alprazolam (Xanax), diazepam (Valium), and lorazepam (Ativan)
BDZs MOA and indications
Enhance inhibitory effects of GABA in the CNS—calming effect; for acute sx of GAD and panic disorders
BDZs SE
SLEEPY; CNS dep (Dec LOC), w/d sx, memory loss, resp dep—more common with IV use
BDZs NC
Can’t use while preg (teratogenic), schedule 4 med—addiction concern and only rx short-term, be careful when taking with other meds that can impact CNS/dec LOC (Benadryl, alc, opioids, barbiturates); CYP says—avoid eating with grapefruit or fatty foods—can inhibit abs
BDZs antidote
Flumazenil (Romazicon)
NTs
Chemicals that enable the path of electrical transmission in the brain across synapses—neurotransmission
Dopamine functions and associated conditions
Attention, motivation, pleasure, reward; Low levels associated with Parkinson’s (slow rxns, anergia) , anhedonia, depression and craving
Serotonin functions and associated conditions
Low serotonin—OCD-like sx (obsession and compulsions), impulsivity—suicide, aggression, susc to enviro triggers, depression and craving
GABA
Inhibitory NT (relaxes); dysfunction (low GABA)—anxiety especially panic disorder, MDD
Norepinephrine
Excitatory NT—fight or flight response; excess—high anxiety, stress, hyperactivity; low—lack energy, focus motivation
What conditions are you most likely to have with depression?
CAD (64% more likely to develop), disability, inc risk of suicide, family history—enviro, bio, psych function
Leading cause of disability worldwide
Depression
Depression diagnosis
Sx intense enough to cause distress and persistently impair psychosocial function with multiple sx (besides mood) and interfere with living
Depression etiology
Situational depression, meds, chemical imbalance
Sx of depression
Anhedonia, fatigue, restless, Dec conc, low self-esteem, sleep and appetite disturbance
Depression tx
Meds (can take weeks to feel effects), CBT and talk therapy, support and education, deep brain stimulation therapy; works best when combines and individual to pt
Panic disorder
Anticipatory anxiety (expectation of anxiety onset) and avoidance—personal strategy to increase feelings of control and Dec risk of panic attack
Panic disorder etiology
Biopysch and physiological—genetics, family history; linked to early childhood stress
Neuro chemical explanation for panic disorder
Overwhelming stress induces circulating stress hormones which stimulate glutamate (most abundant NT in body)—excess glutamate with panic
Panic
Unexpected episodes of anxiety out of proportion with events going on around them; cyclical process of fear
Panic attacks
Recurrent uncomfortable episodes of panic with sudden onset of sx like VS change, heart palpitations, SOA, dizzy, nausea, fear of losing control, tingling, chills/flush
How many people with panic disorder also have depression?
50%
Panic tx
CBT—dec fear thinking, antidepressants (SSRIs, SNRIs, BDZs (for acute sx/attack in the moment), MAOIs)
Generalized anxiety disorder
Persistent feeling of anxiety or dread that interferes with how you live your life
GAD timeline
Chronic; anxiety over 6 months
GAD sx
Excessive, uncontrolled, unrealistic worries, muscle tension, autonomic hyperactivity, concentration problems
Risk factors for GAD
Abuse and trauma, drug use
GAD tx
CBT, antidepressants—SSRIs; BDZs, Buspirone—unknown MOA, no sedation/abuse; doesn’t worsen other drug effects, antioxyltic effect slows anxiety
PTSD 3 core sx and MOA
Hyperarousal, avoidance of reminders, re-experiencing events; chronic activation of stress response in relation to exposure to potentially life-threatening events
Other PTSD sx
Flashbacks, nightmares, emotional blunting, irritability, exaggerated startle
PTSD causes
1 is rape; M—combat, neglect, abuse in childhood; F—sex molestation, physical attack, threatened with a weapon
PTSD tx
Psychotherapy, CBT, exposure therapy, EMDR, SSRIs, SNRIs
Social anxiety disorder
Intense fear of criticism by others, persistent fear of humiliation, negative evaluation of embarrassment by peers (embarrassment is worst that can happen) causing withdrawal from a situation or intense discomfort
Social anxiety causes
Inherited, amygdala—fear response, learned environment
Social anxiety tx
CBT, SSRIs, BDZs, propranolol (Dec HR)
OCD
Repetitive unwanted thoughts/obsessions usually followed by repeated activities/rituals; time-consuming and maybe distressing to ind, friends, family
Subtypes of OCD
Hoarding, contamination with cleaning, checking for safety, symmetry, w/o visible compulsions
OCD tx
Hard to tx; SSRIs, TCAs, deep brain stimulation, EMDR