Management of mood disorders Flashcards
What is usually the 1st line drug for the treatment of depression ?
SSRI - but not always need to take into consideration the patients co-morbidities etc
What is a good question to always ask when deciding anti-depressant treatment for the patient ?
What they used last time and if it worked ?
How long do anti-depressants take to work ?
Usually 2-6weeks
When would you consider ECT in treatment of depression ?
If needing a quicker response e.g. suicide risk etc
What are some of the other treatment options in depression besides anti-depressants ?
- ECT
- CBT
- IPT
- CBASP
- lifestyle changes
- meaningful activity
- stress reduction
- routine (especially sleep)
In psychotic depression what drugs can be combined to treat this ?
Which drug should be continued ?
- Anti-depressants and anti-psychotics
- The anti-depressant is the drug which should then be continued long-term
What is a rare risk of the use of anti-depressant drugs in young people ?
Can rarely cause agitation and lead to suicide in young people
What is none response to an anti-depressant defined as ?
No response or inadequate response after six weeks at the maximum BNF dose or highest tolerated dose
How long should anti-depressant medication be continued for in the treatment of depression?
- Continue treatment for 6-12 months after full resolution of symptoms
- after a first episode, 12-24 months for a recurrence,
- after third episode should continue indefinitely if willing
What is the mainstay of treatment of bipolar disorder ?
lithium, anticonvulsants (lamotrigine and carbamazepine), antipsychotics
Why are anti-depressants not usually used in the treatment of bipolar (considering they often get depressive episodes)?
Antidepressants can cause switching to mania/hypomania or mood instability. Even if they don’t cause elevated mood they are not as effective as mood stabilisers for bipolar depression.
What drug is good for the treatment of bipolar depression?
Lamotrigine
What drug is good for the treatment of mania/hypomania ?
Volproate semisodium
What drugs are good for the treatment of both elevated and depressed states in bipolar disorder ?
Lithium and anti-psychotics
Note lithium is more the maintenance therapy and is the 1st line treatment for that
What can be given to a patient with bipolar disorder if compliance is poor or they are unwilling to take oral medication?
IM antipsychotics can be given every 2-4 weeks
Anti-depressants are not usually used in the treatment of depressive episodes of bipolar but when would they be considered and what anti-depressant would you use 1st line?
severe depressive episodes
1st line = SSRI’s
What are the different types of SSRI’s available?
Fluoxetine, sertraline, citalopram, escitalopram, paroxetine
What are the main side effects someone may experience when taking an SSRI?
- GI upset (diarrhoea & vomiting)
- anxiety (worsened)
- agitation
- insomnia
- sexual dysfunction - delayed orgasm
- Hyponatremia in older patients.
- Transient increase in self-harm / suicidal ideation in <25 years (mainly teenagers)
When should SSRI’s be taken to reduce the risk of insomnia caused by them?
In the morning
What are some of the symptoms people may experience when discontinuing trearment with SSRI’s and which SSRI is associated worse symptoms ?
- GI upset, anxiety, agitation, insomnia, myoclonus
- So taper the dose over a few weeks
- Paroxetine is associated with the worse symptoms so is rarely used
When taking with what class of drug is there an increased risk of GI bleeds when on an SSRI?
NSAID’s
If someone has cardiac problems and needs to be put on an SSRI which SSRI is safest ?
Sertraline
Which SSRI is safest to use in epilepsy ?
Citalopram
Which SSRI is associated with long QT syndrome ?
Citalopram
Which is the most effective SSRI?
Fluoxetine
Give some examples of tricyclic anti-depressants
Amitriptyline, clomipramine, imipramine, lofepramine, dosulepin.
What are the common side effects of tricyclic anti-depressants and what is the important one you need to be wary about ?
- sedation
- weight gain
- confusion
- anticholinergic effects - blurred vision, dry mouth, constipation, urinary retention
- sexual dysfunction
- postural hypotension, tachycardia
Rarely cardiac arrhythmias
Who are tricyclics avoided in ?
- Cardiac problems,
- Older people
- Suicidal intent (cardiac toxicity in OD - overdose)
What is the main Noradrenergic and Specific Serotonergic Antidepressant (NaSSA)?
Mirtazapine
When is mirtazapine usually used ?
Often used when SSRI hasn’t worked (2nd line)
When may mirtazipine be used 1st line over an SSRI?
- if patient has insomnia and/or poor appetite, it also has a good effect in reducing anxiety
- SSRI would make their insomnia worse
- Has a higher sedative effect at a lower dose compared to higher (weird)
What can mirtazapine often be used inconjuction with ?
SSRI or venlafaxine (SNRI)
What are the side effects of mirtazapine ?
- Main ones are - Sedating, causes hunger/weight gain (both may be advantage or disadvantage) - could be good if someone with anorexia needs an anti-depressant
- Other side effects: constipation, dizziness, falls, dry mouth, unusual/vivid dreams. Rarely blood dyscrasias (haematological problems e.g. lower platelets), seizures.
What situations must you be careful with mirtazapine use ?
- It causes GI upset with alcohol so need to avoid alcohol when on it
- and be careful when combining with other sedating agents
What is serotonin syndrome ?
It is a potentially fatal condition triggered by too much nerve cell activity.
List the causes of serotonin syndrome
- monoamine oxidase inhibitors
- SSRIs
- ecstasy
- amphetamines
- st johns wart
What are the clinical features of serotonin syndrome ?
- Neuromuscular excitation (e.g. hyperreflexia, myoclonus, rigidity)
- Autonomic nervous system excitation (e.g. hyperthermia)
- Altered mental state - confusion ==> coma ==> death
May initially appear like someone youd exepect to be on ectasy e.g. buzzing etc
What is the management of serotonin syndrome ?
- supportive including IV fluids
- benzodiazepines
- more severe cases are managed using serotonin antagonists such as cyproheptadine and chlorpromazine