SSRIs Flashcards

1
Q

Which SSRI has the highest chance of withdrawal reactions

A

Paroxetine

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2
Q

Which SSRI is safe in MI and unstable angina

A

Sertraline

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3
Q

Which SSRI is the only antidepressant licensed for children

A

Fluoxetine

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4
Q

Which SSRIs cause QT prolongation

A

Citalopram
Escitalopram

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5
Q

What are the side effects that can occur with SSRIs

A

G - Gastro - N&V
A - Appetite - Weight loss/gain
S - Serotonin Syndrome
H - Hypersensitivity reactions - Stop if rash occurs

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6
Q

What are the adverse effects that can occur with SSRIs

A

Bleeding risk increased
QT interval prolongation
Lowers seizure threshold
Movement disorders / dyskinesias

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7
Q

What interacts with SSRIs to cause an increased plasma concentration

A

Grapefruit Juice
(Enzyme inhibitors)

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8
Q

What interacts with SSRIs to cause an increased risk of bleeding

A

NSAIDs
Anticoagulants
Antiplatelets

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9
Q

What interacts with SSRIs to cause an increased risk of QT prolongation

A

Erythromycin (macrolides)
TCAs
Sotalol
Amiodarone
Chloroquine
Mefloquine
Lithium
Quinine
Antipsychotics

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10
Q

What interacts with SSRIs to cause an increased risk of hypokalaemia & torsade de pointes

A

Theophylline
Beta 2 agonists
Loop / thiazide diuretics
Corticosteroids

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11
Q

What interacts with SSRIs to cause an increased risk of hyponatraemia

A

Diuretics
Desmopressin
Carbamazepine
NSAIDs

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12
Q

What interacts with SSRIs to cause an increased risk of serotonin syndrome

A

St Johns Wort
Amfetamines
Sumatriptan
Selegiline
Tramadol
TCAs
Ondansetron

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13
Q

How long do SSRIs take to work

A

At least 2 weeks
(Reviewed every 1-2 weeks at the start of treatment)

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14
Q

How long should treatment with SSRIs be continued for

A

Atleast 4 weeks
6 weeks in elderly

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15
Q

Following remission, how long should SSRIs be continued for

A

At least 6 months
*12 months in elderly
*At least 12 months in patients with generalised anxiety disorders (relapse is high)
* 2 years in recurrent depression

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16
Q

Why is a washout period required when switching between antipressant classes

A

To avoid serotonin syndrome

17
Q

How long should the washout period for SSRIs be

A

1 week

  • 2 weeks for sertraline
  • 5 weeks for fluoxetine
18
Q

When does the risk of withdrawal reactions increase

A

If stopped suddenly after taking for 8 weeks or more
*Reactions occur within 5 days of stopping