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antidepressants
these bitchin ass drugs make you happy
31
Pharmacology
Not Applicable
02/16/2011

Additional Pharmacology Flashcards

 


 

Cards

Term

 

 

 

 

Unipolar depression symptoms

Definition

 

                                                                          i.      Feelings of intense sadness and despair, mental slowing and loss of concentration, pessimistic worry, lack of pleasure, self-deprecation, and variable agitation or hostility, decreased libido

                                                                        ii.      Insomnia or hypersomnia, altered eating patterns: anorexia and weight loss or overeating, decreased energy and libido, and disruption of the normal circadian and ultradian rhythms of activity, body temperature, and many endocrine functions

                                                                      iii.      Women are at 2x the risk as men

 

Term

 

 

Antidepressant charcteristics

Definition
orally administered, 90-95% bound to plasma proteins, metabolized by the liver, excreted in urine, long “half-lives” (e.g., imipramine - t½=24 hours), relatively small therapeutic index
Term

 

 

 

Trycyclics (TCAs)

Definition

1.      Limit reuptake of serotonin and norepinephrine – leaves more in synapse to take effect.

2.      Requires 2-3 weeks for clinical improvement

3.      Anticholinergic side effects are common: blurred vision, dry mouth, constipation, urine retention. 

4.      Antagonist activity at alpha 1 receptors cause cardiac side effects such as tachycardia and orthostatic hypotension as well as CNS side effect of sedation

Term

 

 

 

Tertiary TCAs

Definition

 amitriptyline, clomipramine, doxepin, imipramine,trimipramine – slightly more serotonin effects

Term

 

 

 

 

Clomipramine

Definition
usually given for OCD, enhances adrenergic neurotransmitter transmission through blocked reuptake at the synapse.
Term

 

 

 

Doxepin

Definition
Tertiary TCA with the absence of CV side effects
Term

 

 

 

Imipramine

Definition
 TCA with anticholinergic properties: enuresis (bed wetting) in children over 6
Term

 

 

 

Secondary amine tricyclics

Definition
amoxapine, desipramine, maprotiline, nortryptyline, protryptyline – slightly more norepinephine effects
Term

 

 

 

Action of TCAs

Definition

Blocks the reabsortion of NE and HT-5 (serotonin), which allows more neurotransmitters to be available at postsynaptic receptors

 

Term

 

 

 

 

Uses of TCAs

Definition

Depression: alcohol and drug withdrawal, major depression

Bi-Polar disorder (manic-depressive)

Often used for clients who fail to respond well to antidepressants (SSRIs) 

Term

 

 

 

 

Contraindications of TCAs

Definition

Acute recovery phase of myocardial ischemia or severe coronary artery disease

Do not administer within 14 days of taking MAOIs

Term

 

 

 

 

Side Effects of TCAs

Definition
Sedation, anticholinergic effects (dry mouth,headache, urinary retention, blurred vision, tachycardia), orthostatic hypotension, seizures
Term

 

 

 

 

Action of SSRIs

Definition
decreases the reuptake of HT-5 at selected nerve terminals in the CNS. they also have a weak effect on the reuptake of NE and dopamine. Increased availability of HT-5 at receptors results in mood elevation and reduced anxiety.
Term

 

 

 

4 things SSRIs do

Definition

        a.      Increases sedation

            b.      Decreases appetite

                                                                                        c.      Decreases libido and impairs sexual function

    d.      Increases mood

Term

 

 

 

 

Side Effects of SSRIs

 

Definition
nausea, insomnia, weight gain, sexual dysfunction (decreased libido, delayed ejac, delayed or absent orgasm (BOOO!!)), hyponatremia, neonatal withdrawal, increased risk of GI bleeding, Serotonin syndrome (agitation, confusion, disorientation, hallucinations)  
Term

 

 

 

fluoxetine

Definition
"Prozac”;  t1/2=72 hr., 12-15 days to reach TE
Term

 

 

 

 

paroxetine

Definition
(“Paxil” – noted for its anticholinergic side effects; recently approved for social phobia)
Term

 

 

 

List of SSRIs

Definition

          a.      citalopram (“Celexa”)

                      b.      escitalopram (“Lexapro”)

                                                                                 c.      fluoxetine (“Prozac”;  t1/2=72 hr.) (12-15 days to reach TE)

            d.      fluvoxamine (“Luvox”)

                                                                            e.      paroxetine (“Paxil” – noted for its anticholinergic side effects; recently approved for social phobia)

                                                                               f.      sertraline (“Zoloft”; t1/2=36 hr.)

Term

 

 

 

 

Action of SNRIs

Definition
In general, these have fewer antimuscarinic effects than the tricyclics and have a more potent adrenergic effect compared to their serotonergic effect.
Term

 

 

 

SNRIs list

Definition

                    duloxetine (“Cymbalta”)

           Imilnacipran (“Ixel”)

                     venlafaxine (“Effexor”)

Term

 

 

 

 

Action of MAOIs

Definition
The antidepressant effects of MAOIs are the result of blocking monoamine oxidase in the nerve terminals. This action increases the availability and concentrationof NE and HT-5 for neurotrasmission.
Term

 

 

 

Uses of MAOIs

Definition
MAOIs are reserved for depressed clients who have not responded to TCAs,  SSRIs, SNRIs. Last measure before ECT
Term

 

 

 

Contraindications of MAOIs

Definition

Do not use in clients with impaired renal of hepatic function

Do not use in peeps with CAD, CHF, HTN

DO NOT USE WITH SSRIs

 

Term
Precautions of MAOIs
Definition
Hypertensive crisis can be triggered by eating foods rich in tyramine (precursor to NE) such as pickled, aged, caffinated or ferminted food or drinks and meds containing diuretics, antihistamines, antihypertensives, and ephedrine.
Term

 

 

 

 

Side Effects of MAOIs

 

Definition

CNS stimulation (anxiety, agitation, hypomania, mania)

Orthostatic hypotension

hypertensive crisis from intake of tyramine-containing foods

Term

 

 

 

 

List of MAOIs

Definition

                                                                               a.      isocarboxazid (“Marplan”)

                                                                              b.      phenelzine (“Nardil”)

                                                                               c.      tranylcypromine (“Parnate”)

Term

 

 

 

 

Atypical Antidepressants

Definition

1.      Buproprion (“Wellbutrin” – lowers seizure threshold 3-fold*, free of sexual side effects), mirtazepine, reboxetine, trazadone.

Term

 

 

 

 

Bipolar depression

Definition

A.    Aspects of major (unipolar) depression that cycle with mania or hypomania

Term

 

 

 

Side effects of Lithium

Definition

1.      GI: nausea, diarrhea, drowsiness, polyuria, dry mouth, thirst, weight gain, insomnia

2.      Thyroid enlargement – nontender, benign

 

Signs of acute lithium intoxication: vomiting, diarrhea, tremor, coma, convulsions

Term

 

 

 

 

Lithium and other drug interactions 

 

Definition

1.      Interacts with diuretics, because these commonly increase sodium excretion, thereby decreasing lithium excretion, leading to buildup of toxic levels of lithium

2.      increase excretion – osmotic diuretics and acetazolamide

decrease excretion – the thiazides and other diuretics that deplete sodium

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