Clinical Psychology Flashcards
What are the symptoms of depression?
lethargy, feelings of despair and hopelessness and loss of interest in usual activities.
What are the features of depression?
- Depression is twice as common in women as in men but men are more likely to commit suicide
- At any one time, 5-9% of women will be clinically depressed and 2-3% of men
- Depression is most common from the ages of 25-44 but the most at-risk age group is 50-54
- Depressed people tend to live shorter lives than the general population
What are the 4 antidepressants?
MAOIs Monoamine oxidase inhibitors
Tricyclic antidepressants
Specific Serotonin Reuptake inhibitors - SSRIs
Atypical antidepressants
How do antidepressants work?
used to treat depression based of the principle that low levels of monoamine cause depression and so increasing levels will help
Key things about MAOIs and how do they work ?
- The oldest antidepressant drugs.
- They affect several neurotransmitters by inhibiting the activity of monoamine oxidase enzymes, prevent the enzyme from breaking down NA and 5-HT increasing levels in the synapse.
- Must not be combined with SSRIs.
- Combination with certain foods and other medications can cause serious problems.
- Only used if other drugs do not work.
- side affects = insomnia, wight gain, headaches, dizziness
Key things about Tricyclic antidepressants and how do they work ?
- An older type of antidepressant drug.
- Inhibits the reuptake of 5-HT, NA, and to some extent DA, increasing the amount of these neurotransmitters in the synapse to be picked up by the post synaptic receptors and thereby improving mood, energy and motivation.
- Cause severe side effects and are usually only used as a last resort if SSRIs and atypical drugs do not work.
Key things about Specific Serotonin Reuptake Inhibitors (SSRIs) and how do they work ?
- SSRIs prevent the reuptake of serotonin (5-HT) in the presynaptic neuron, increasing the amount of serotonin in the synapse to be picked up by the postsynaptic receptors and thereby improving mood.
- Examples include Fluoxetine (Prozac), Sertraline (Zoloft)
- Fewer and less severe side effects compared to older antidepressant drugs like tricyclics and MAOIs.
Key things about Atypical antidepressants and how do they work ?
- Most recent, New drugs including trazodone and bupropion that affect 5-HT and other neurotransmitters, such as NA and DA.
- Drugs like Trazodone, which target 5-HT and NA are called SNRIs - Serotonin-norepinephrine reuptake inhibitors.
- Bupropion (Wellbutrin) causes fewer side effects and can give more energy than other antidepressants
TIME WEAKNESSES
- how long before treatment takes effect?
- how long should treatment last?
antidepressants
⤫ Antidepressants usually take a few weeks to work.
⤫ Treatment may continue for a period of months or years, depending on the patient.
- there can be serious side effects if patients suddenly stop taking them.
TIME STRENGTHS
antidepressants
✰ It is quick and easy for the patient to take medication.
What evidence is there to support the EFFECTIVENESS of antidepressants?
name and explain the studies
✰ Barbui et al (2003) (meta-analysis) found that SSRIs are more effective than tricyclics.
✰ Arroll (2005) found that both TCAs and SSRIs were effective. In a meta-analysis of RCTs comparing SSRIs and TCAs to placebos, they found that 56-60% in most studies responded well to treatment compared to 42-47% for placebo groups.
What evidence is there to challenge the EFFECTIVENESS of antidepressants?
name and explain the studies
⤫ A government study (2006) found that less than 50% of patients became symptom-free and many relapsed even if they were still taking antidepressants.
What evidence is there to challenge the ACCEPTABILITY of antidepressants?
name and explain the studies
⤫ Caporino and Karver (2012) asked adolescent girls to rate treatments for depression on their acceptability. Psychotherapy more acceptable than combined therapy (both psychotherapy and drug treatment). Drug treatment on its own seen as not acceptable.
What evidence is there to support the ability of antidepressants to prevent RELAPSE?
name and explain the studies
✰ Muller (2013) cites a longitudinal study in the Netherlands which followed 222 patients over 10 years.
76% of those who had NOT received medication recovered and did not relapse
50% of those who took medication recovered and did not relapse.
✰ Geddes et al (2003) carried out a research review and found that
Drug treatment for depression showed a relapse rate of 18%.
Placebo group had 41% relapse rate.
What evidence is there to challenge the ability of antidepressants to prevent RELAPSE?
⤫ Antidepressants treat symptoms but are not a cure.