Depression
&
Antidepressants
Fareed Bhatti
Pennine VTS - November 2009
Format of Presentation
• Split into subgroups …..( if possible)
• 3 presenters
• About 15-20 minutes
• Covered Topics
- New NICE guidelines for Depression(Oct 2009)
- How to start, switching between antidepressants & stopping them.
- Individual characteristics of Antidepressants
- Antidepressants in Pregnancy
Some AKT style questions (MCQs) thrown in somewhere…..
Chocolates for right answers!
Why is it important?
Worldwide lifetime incidence
~4-10% for major depression
2.5% and 5% for dysthymia ( chronic low grade symptoms)
Numbers for UK ( King’s Fund report 2006):
In 2006 1.24 million people with depression in England,
By 2026 projected to rise by 17 % to 1.45 million.
Costs:
. In 2007 the total cost of services for depression in England
~ £1.7 billion with lost employment £7.5 billion.
By 2026 cost ~ £3 billion & with lost employment £12.2 billion.
QOF points (2009-2010) = 53 for depression
- DM/CVD pts screened for depression in past 15 months - 8 points
- New diagnosis in past year- formal assessment(e.g.PHQ9) - 25 points
- Re-evaluate using the same tool in 5-12 weeks - 20 points
Question 1
• What are the two screening
questions for depression in
primary care?
(Chocolates only for telling both!)
Answer
• 1. During the last month have you often been
bothered by feeling down, depressed or
hopeless?
• 2. During the last month, have you often been
bothered by having little interest or pleasure in
doing things?
Question 2
• Name any 7 symptoms that you
would use to assess for
depression?
Answer
Symptoms of general low mood include: The somatic features of depression
• sadness and tearfullness include:
• low self-esteem • loss of appetite
• weight loss
• guilt
• constipation
• pessimism • insomnia or hypersomnia
• helplessness • amenorrhoea
• hopelessness • low libido
• apathy • psychomotor retardation or agitation
• loss of interests
• anhedonia Psychotic symptoms (severe
• loss of concentration depression):
• depersonalisation
• Paranoia • hallucinations typically derogatory auditory
hallucinations
• delusions e.g. delusions of worthlessness
Anxiety symptoms of depression
include:
• tension
• apprehension
• phobic disorders
Severities of Depression
• Subthreshold:
2 years
- PST or mild depression persisting after other
interventions
Stepped Care Model
Psychosocial interventions
Low-intensity psychosocial interventions
Indications:
• For PST depressive symptoms or mild to moderate depression +/- chronic physical health problem,
• PST symptoms that complicate care of the chronic physical health problem
• Preventing relapse
Types (guided by the patient’s preference)
– Structured group physical activity programme
– Group-based peer support (self-help) programme
– Individual guided self-help based on the principles of CBT
– Computerised CBT
-- Group based mindfulness –based CBT
High-intensity psychological interventions
Indications
• Treatment for moderate depression
• For patients with initial presentation of moderate depression and a chronic physical health
• Preventing relapse of depression –some cases
Types
-- Group-based CBT / Interpersonal therapy/ behavioural activation
– Individual CBT or
-- Behavioural couples therapy for selected patients
Starting antidepressants
The consultation:
- Give choice
- Explore I,C &Es
- Discuss no addiction potential
- Shouldn't discontinue suddenly
- Need to continue beyond remission
- Safety netting and follow up.
Follow up
- <30yrs or high risk of suicide- see after 1 week and then frequently.
- Less risk of suicide- see after 2 weeks then 2-4 weeks uptil 3 months then
longer intervals.
Should the antidepressants ever be put on patient’s repeat medication?
Drug titration
- If SEs early on monitor& reassure
OR stop and change
OR upto 2 weeks addition of benzodiazepine
(according to symptoms and not for chronic anxiety).
- 2-4 weeks
Minimal response
check compliance & increase support
OR increase dose
OR switch antidepressant
Some improvement
Continue for another 2-4 weeks
& change antidepressant if inadequate response,
SEs or patient choice.
Choosing and changing antidepressants
Choosing:
- Patient choice
- SSRIs
- Generic SSRI 1st line- consider PPI in elderly or if on aspirin/ NSAIDs etc.
- Sertraline /Citalopram for people with chronic illnesses as lower interactions.
- Higher interactions with Fluoxetine, Fluvoxamine and Paroxetine.
- Paroxetine – higher discontinuation symptoms.
- TCAs
- Higher toxicity risk in overdose except Lofepramine, so increase dose slowly.
- Dosulepin(TCA) –not recommended because of high risk of toxicity with OD.
- MAO Inhibitors/ Lithium or lithium augmentation-Psychiatrists
Changing:
Venlafaxine
Different SSRI or better
SSRI tolerated newer Another class
generation drug
TCAs
To: TCA Trazodone SSRI SSRI Mirtazapine Reboxetine Moclobemide Venlafaxine
(Citalopram, (Fluoxetine)
From
Sertraline,
Paroxetine)
TCA Cros s -taper Ha l ve dosage Ha l ve dosage Ha l ve dosage Cros s -taper Cros s -taper Wi thdraw a nd Cros s -taper
ca uti ously a nd a dd a nd a dd SSRI, a nd a dd ca uti ously ca uti ously wa i t at l east ca uti ously
tra zodone, then then s low fl uoxetine, then 1 week s tarting with
s l ow withdrawal wi thdrawal s l ow withdrawal venl afaxine 37.5
mg/da y
Trazodone Cros s -taper — Wi thdraw, then Wi thdraw, then Cros s taper Wi thdraw, s tart Wi thdraw a nd Wi thdraw. Start
ca uti ously with s ta rt SSRI s ta rt fl uoxetine ca uti ously reboxetine at wa i t at l east a t venlafaxine at
very l ow dosage 2 mg twi ce a 1 week 37.5 mg/da y
of TCA da y a nd
i ncrease
ca uti ously
SSRI Cros s -taper Wi thdraw, then — Wi thdraw, then Cros s -taper Cros s -taper Wi thdraw a nd Wi thdraw. Start
(Citalopram, ca uti ously s ta rt tra zodone s ta rt fl uoxetine ca uti ously ca uti ously wa i t at l east venl afaxine 37.5
2 weeks mg/da y a nd
Sertraline,
i ncrease very
Paroxetine) s l owly
SSRI Stop fl uoxetine. Stop fl uoxetine. Stop fl uoxetine. — Wi thdraw a nd Wi thdraw, s tart Wi thdraw a nd Wi thdraw. Wait
(Fluoxetine) Start TCA a t Wa i t 4–7 days , Wa i t 4–7 days , s ta rt reboxetine at wa i t at l east 4-7 da ys . Start
very l ow dosage then s tart low- then s tart SSRI mi rta zapine 2 mg twi ce a 5 weeks venl afaxine at
a nd i ncrease dos e tra zodone a t l ow dose* ca uti ously da y a nd 37.5 mg/da y.
very s l owly a nd i ncrease i ncrease Increase very
s l owly ca utiously s l owly
Mirtazapine Wi thdraw, then Wi thdraw, then Wi thdraw, then Wi thdraw, then — Wi thdraw, then Wi thdraw a nd Wi thdraw, then
s ta rt TCA s ta rt tra zodone s ta rt SSRI s ta rt fl uoxetine s ta rt reboxetine wa i t for 1 week s ta rt
venl afaxine
Reboxetine Cros s -taper Cros s -taper Cros s -taper Cros s -taper Cros s -taper — Wi thdraw a nd Cros s -taper
ca utiously ca utiously ca utiously ca utiously ca utiously wa i t at l east ca utiously
1 week
Moclobemide Wi thdraw a nd Wi thdraw a nd Wi thdraw a nd Wi thdraw a nd Wi thdraw a nd Wi thdraw a nd — Wi thdraw a nd
wa i t 24 hours wa i t 24 hours wa i t 24 hours wa i t 24 hours wa i t 24 hours wa i t 24 hours wa i t 24 hours
TCA, tri cycl i c a ntidepressant; SSRI, selective s erotonin reuptake inhibitor.
* Ci tal opram 10 mg/day; s ertraline 25 mg/day; or pa roxetine 10 mg/day.
Question 3
A 64 years old lady comes to see you 3 weeks after
her husband’s death. You notice she looks
depressed. She reports poor sleep , appetite, loss
of pleasure in activities and feelings of
depersonalisation.
What would you suggest
a) Sertraline.
b) St John’s wort with light therapy.
c) Bereavement counselling.
d) Any combination of above.
Answer 3
Careful monitoring and Bereavement counselling.
Although has a lot of features of depression and
might very well develop into that, at present
secondary to bereavement and therefore doesn’t
qualify as true endogenous depression.
Stopping antidepressants & preventing relapse
Augment meds if needed
Started
antidepressants Thinking about stopping?
- Is it recurrent illness
Remission - Any residual symptoms or
achieved - Continuing psychosocial /physical
health problems
Psy chological interventions-
CBT or m indfulness based
Cont inue Meds for 6 CBT
more mont hs same
dose
Significant risk of relapse
OR Continue m eds for
Hx of Recurrent depression 2 y ears and then
rev iew
▫ Gradually reduce the dose over a 4 weeks, can be slower. Fluoxetine can usually be stopped
over a shorter period(longer half life).
▫ Some drugs like paroxetine and venlafaxine have a shorter half-life and more chances of
discontinuation syndromes. (See GP notebook for table for reducing doses)
▫ Discontinuation symptoms Management :
- Mild = reassure and monitor.
- Severe = reintroduction of original antidepressant at effective dose(or another
antidepressant with a longer halflife)
The End