Side effects, MOA, CI Flashcards
What are the 4 main side effects of clozapine
- Agranulocytosis
- seizures
- myocarditis
- increased mortality in elderly patients w/ dementia related psychosis
Which SSRI can prolong QT interval with increasing blood levels
citalopram
Which 2 SSRIs have a greater risk of insomnia/agitation
sertraline
fluoxetine
Which SSRI has more frequent diarrhea and GI complaints
sertraline
Which 2 SSRIs have withdrawal sxs if not tapered
paroxetine
fluvoxamine
Side effect of Venlafaxine
increased BP (primarily diastolic) and HR with increasing doses
What are the 3 contraindications for haldol
parkinson disease
anticoagulant use
severe cardiac disorder
MOA of 1st gen antipsychotics
blocks dopamine (D2) receptors
MOA of 2nd gen antipsychotics
Dopamine D4 receptor and serotonin (5HT2) antagonists
EPS less common b/c weakly bind to D2 receptors
6 side effects of 2nd gen antipsychotics in general
- EPS (less common than 1st gen)
- Increased prolactin levels
- hyperglycemia
- hyperlipidemia
- weight gain
- NMS
What are 2 side effects of olanzapine
weight gain
DM
9 side effects of 1st gen antipsychotics
- EPS (dystonic rxns aka dyskinesia, tardive dyskineia, parkinsonism)
- Neuroleptic malignant syndrome
- QT prolongation
- Cardiac arrhythmias
- Sedation
- Anticholinergic side effects
- Dermatitis
- Blood dyscrasias
- Incr. prolactin (more than 2nd gen)
- weight gain
- Mental status changes
- Extreme muscle rigidity
- tremor
-
autonomic instability
- tachycardia
- tachypnea
- hyperthermia/fever*
- profuse diaphoresis
**LIFE THREATENING- caused by D2 inhibition**
When does NMS usually occur
within 90 days of initiation/dose increase
When do sxs of dystonic reactions (dyskinesia) usually occur
hours-days after initiation of typical antipsychotic
due to disruption of Dop-Ach balance (excess Ach)
What sxs are commonly seen in dyskinesia (EPS of antipsychotics)- 5
- intermittent
- spasms
- sustained involuntary muscle contractions
- trismus
- protrusions of tongue
- facial grimacing
- torticollis
- difficulty speaking
MOA of risperidone and ziprasidone
partial D2 receptor and serotonin 5-HT1A receptor antagonist, 5-HT2 receptor antagonist
6 side effects of risperidone and ziprasidone
- EPS
- Increased prolactin
- sedation
- weight gain
- hypotension
- prolonged QT
MOA of aripiprazole
D2 receptor and serotonin (5-HT2 & 5-HT1) receptor antagonist
MOA of lithium
Increases norepinephrine and serotonin receptor sensitivity
3 contraindications to lithium use
- pregnancy
- severe renal disease
- cardiac disease
side effects of lithium
- hypothyrodism
- sodium depletion
- increased urination and thirst
- diabetes insipidus
- Hyperparathyroidism/hypercalcemia
- Seizures
- tremor
- Headache
- Sedation
- arrhythmias
- N/V/D
- weight gain
8 common side effects of SSRIs
- GI upset
- sexual dysfunction
- HA
- Changes in energy level (fatigue, restlessness)
- anxiety
- insomnia
- weight changes
- SIADH
Avoid citalopram in patients with what condition?
long QT syndrome
do patients with serotonin syndrome have mydriasis or miosis
mydriasis
SNRIs have similar side effects as SSRIs (like hyponatremia and noradrenergic sxs), what are 2 other side effects?
- Hypertension
- Dizziness
What are 5 CI/cautions of SNRIs
- MAOI use
- Renal/hepatic impairment
- Seizures
- Avoid abrupt discontinuation
- Caution in patients w/ HTN
Increased risk of serotonin syndrome when you combine SNRIs with what?
St. John’s Wort
MOA of Tricyclic antidepressants
inhibits reuptake of serotonin and norepinephrine
4 side effects of tricyclic antidepressants
1 .anticholinergic effects
- sedation
- weight gain
- prolonged QT interval (best indicator of overdose)
What is the best indicator of TCA overdose
prolonged QT interval
4 sxs of TCA overdose
- wide complex tachycardia
- Neuro symptoms
- ARDS
- SIADH
3 contraindications of TCAs
- Use of MAOIs
- Recent MI
- Seizure history
MOA of mirtazapine
enhances central noradrenergic and serotonergic activity
5 side effects of mirtazapine
- sedation
- dry mouth
- constipation
- weight gain
- agranulocytosis
*less sexual dysfunction side effect
MOA of bupropion
inhibits the neuronal uptake of dopamine and norepinephrine
8 side effects of bupropion
- seizures
- agitation
- anxiety
- restlessness
- weight loss
- HTN
- HA
- Dry mouth
***less GI distress and sexual dysfunction compared to SSRIs***
5 contraindictions for bupropion
- Seizure disorder**
- eating disorders (ex. bulimia, anorexia)
- MAOI use
- patients undergoing drug/ETOH detox
**avoid abrupt withdrawal**
What is the MOA of MAOIs
blocks breakdown of neurotransmitters (dopamine, serotonin, epinephrine, norepinephrine) by inhibiting monoamine oxidase
6 side effects of MAOIs
- Hypertensive crisis (must avoid tyramine contining foods- aged/fermented cheese, wine, beer, smoked meats, chocolates, coffee or tea)
- insomnia
- anxiety
- orthostatic hypotension
- weight gain
- sexual dysfunction
What foods must you avoid when taking MAOIs
tyramine containing foods:
- aged/fermented cheeses
- wine
- beer
- chocolate
- aged foods
- smoked meats
- cofee
- tea
MAOI + TCA may cause what
delirium and hypertension
MOA of trazadone
serotonin antagonist and reuptake inhibitor
antidepressant, anti-anxiety and hypnotic effects
3 side effects of trazadone
- sedation
- cardiac arrhythmias
- priapism (rare)
What are the 3 SNRIs
venlafaxine
desvenlafaxine
duloxetine
What are the 6 tricyclic antidepressants
- amitriptyline
- nortriptyline
- clomipramine
- desipramine
- doxepin
- imipramine
what are the 3 nonselective MAOIs
(MAO A &B)
Phenelzine
Tranylcypromine
Isocarboxazid
Which is the selective MAOI? (MAO B)
Selegiline
Which MAOI has less chance of HTN crisis induced by tryamine
selegiline
MOA of dextroamphetamine
releases dopamine, norepinephrine and serotonin from the presynaptic neuron, increasing levels at the synaptic cleft
Side effects of dextroamphetamine (6)
- Growth suppression (eventually normalize)
- insomnia
- appetite suppression
- weight loss
- GI upset
- HA
- anticholinergic effects
- cardiac arrhythmia
- Raynauds phenomenon
- Reduced seizure threshold
etc