Mental Health Flashcards
Apart from low WBC and neutrophils, what else can give RED result in Clozapine blood monitoring?
Low platelets
When is Clozapine lvl taken post dose?
12 hours post dose (trough lvls)
What class of drug is procyclidine and what is it used for?
Antimuscarinic; EPSs
Which receptors do benzodiazepines act on?
GABAa receptors agonists (allosteric modulation)
Diazepam - Lorazepam - Clonazepam dose conversions
5mg Diazepam - 0.5mg Lorazepam - 0.25mg Clonazepam
Clozapine monitoring intervals
Weekly for 18 weeks; Every 2 weeks from week 19 to week 52; Monthly afterwards
What is necrotic skin reaction called?
Stevens-Johnson syndrome
What should never be done with Lamotrigine regimen?
Speed up titration
Why does aripiprazole have the least side-effects?
It`s a partial D2 agonist
What checks need to be done before starting Lithium?
BMI, ECG, thyroid, parathyroid, kidneys
Target Lithium lvls
0.4 - 1
When to take Lithium lvls?
12 hours post dose, 1 week after initiation
Can Lithium be sedating?
Yes
Lithium side-effects
Stomach upsets (at the start of the treatment), shaky hands, metallic taste, weight gain, swelling of ankles
Signs of Lithium toxicity
Severe tremor, confusion, dizziness, blurred vision, stomach aches with nausea or diarrhoea, slurred speech, muscle weakness, muscle twitches
Which 2 antipsychotics have the safest profile in terms of QT prolongation and cardiac risks?
Aripiprazole and Flupenthixol
Name antipsychotics with mood-stabilizing properties? (5)
Risperidone, paliperidone, olanzapine, quetiapine, aripiprazole
Which antipsychotic is used to treat psychotic depression?
Quetiapine
Why does quetiapine, olanzapine and clozapine cause postural hypotension?
They act on a-adrenoceptors
Why does Clozapine cause constipation?
Acts on M1 receptors
What is special about Quetiapine`s action on receptors?
Dissociates fast from the receptor complex, so no EPS even though has affinity for D2 receptors
Name antipsychotics for acute psychosis (3)
Risperidone, Olanzapine, Haloperidol
What class is Mirtazapine
Tetracyclic antidepressant
Symptoms of hyperprolactinaemia
Gynecomastia, Galactorrhoea, Erectile dysfuntion, irregular periods
Medication to treat hyperprolactinaemia (2)
Bromocriptine and cabergoline
Alzheimers Dementia treatments
Mild-moderate: galanthamine, rivastigmine, donepezil
Severe: Memantine
Lewy body dementia treatment
Mild-moderate: rivastigmine or donepezil
Memantine only if the others failed
Side-effects of Galanthamine
GI - take with food
Rash - discontinue as potentially SJS
What is the know paradoxical effect of benzodiazepines
Hostility and aggression
When is buspirone used
Short-term management of anxiety
How are benzodiazepines metabolized?
By liver
Which benzodiazepines are preferred in liver impairment?
Short-acting
ADHD 1st line management
Lisdexamphetamine or Methylphenidate - try either one for 6 weeks, switch to the other if ineffective
What is atomoxetine used for
last line in ADHD
What side-effects do ADHD medication have in common
Mental health side-effects
Contraindications of Methyphenidate
CVD, HF, psychosis
In which disease is Lithium contraindicated
Addison’s
What adjustments does Lithium require in pregnancy and why
Dose to be increased in 2nd and 3rd trimester due to increased volume of distribution
Which antidepressant is the safest in MI and unstable angina
Sertraline
What electrolyte does all antidepressants derange
Sodium - hyponatraemia
Serotonin syndrome symptoms
Muscle rigidity, tremor, myoclonus
Hyperthermia, BP changes, tachycardia
Confusion, agitation, mania
Examples of sedative tricyclics (4)
Amitriptyline, Clomipramine, Dosulepin, Trazodone
Examples of less sedative tricyclics (2)
Nortriptyline, Imipramine
Examples of MAOis
Phenelzne, Moclobemide, Isocarboxazid
What is a serious side-effect of Atomoxetine
Liver toxicity
Symptoms of SSRI withdrawal
Electric shock feeling, GI disturbances, headache, flu-like symptoms
Which antidepressant is associated with most withdrawal
Venlafaxine
When is Venlafaxine contraindicated
Arrhythmias, uncontrolled HTN
Cautions for Mirtazapine
CVD, diabetes, epilepsy
Can also cause blood disorders
How to distinguish NMS from Serotonin Syndrome?
In NMS - CK will be elevated
Which class of anti-psychotics is more effective for negative symptoms?
SGAs
What can Chlorpromazine cause
SLE - protect skin from light
Which anti-psychotic is licensed for PD?
Clozapine
What side effect does Clozapine have on heart?
Can cause myocerditis/cardiomyopathy - discontinue
What special parameter to monitor for Quetiapine and why
Weight gain - increases appetite
Parkinsons Disease management
If patient`s quality of life is affected: Co-caredopa/Co-beneldopa
If quality of life isn`t affected:
Levodopa 1st line
Or D-receptor agonists (non-ergot derived)
MAOI-Bs
Dopamine receptor agonists examples (3)
Rotigotine, ropinirole, pramipexole
MAOI-B examples (2)
Rasagiline, Selegiline
Which major side-effects are all PD meds associated with (3)?
Impulse control disorders, Psychiatric symptoms, Sudden onset of sleep
Which drug is associated with most end of dose deterioration?
Levodopa
What can happen if PD drugs stopped abruptly?
NMS
Akinesia
Ergot-derived D-receptor agonists examples (3)
Bromocriptine, cabergoline, pergolide
Antiemetic of choice in Parkinsons?
Domperidone
When is Metoclopramide contraindicated?
GI disorders, PD
Where does Domperidone act?
Chemoreceptor trigger factor
When is Domperidone contraindicated?
Cardiac disease
Anti-emetic of choice in pregnancy & 2nd line options
Promethazine - 1st line
Metoclopramide & Prochlorperazine - 2nd line
Options for motion sickness
Hyoscine - 1st line
Promethazine, Cyclizine, Cinnarizine
What SE is Ondansetron associated with?
QT prolongation
Buprenorphine action on opioid receptors
Both agonist and antagonist
What happens if you give buprenorphine to somebody who is already on opioids
It can trigger withdrawal
What happens with opioids in renal impairment
Accumulation - avoid or adjust the dose
Side-effect of SC opioid injection
Severe itching
What can IV fentanyl cause
Muscle rigidity
Which antiemetics to give in nausea in migraine?
Domperidone, metoclopramide
When are triptans contraindicated?
Unstable HTN, previous cardiac event
Medications of choice in neuropathic pain (3)
Amitriptyline, Pregabalin, Gabapentin
Drug of choice in post-herpetic neuralgia
Topical Capsaicin
Drug of choice in trigeminal neuralgia
Carbamazepine
Symptoms of benzos withdrawal
Toxic psychosis, convulsions, delirium tremens
In which benzos withdrawal is more common
Short-acting benzos
Examples of long-acting benzos (2)
and short-acting benzos (2)
Diazepam, Chlordiazepoxide
Lorazepam, Oxazepam
What can Methadone exacerbate?
Asthma
When is Disulfuram contraindicated
CVD
When to immediately discontinue Disulfiram
If liver toxicity develops