Therapeutics and polypharmacy (1) Flashcards

1
Q

(2) types of contraindications for the drug use (in general)

A
  • Relative contraindication → caution should be used when two drugs or procedures are used together. (It is acceptable to do so if the benefits outweigh the risk.)
  • Absolute contraindication → event or substance could cause a life-threatening situation
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2
Q

What’s ‘Shared Care Agreement’?

A

Shared care → where a GP supports and prescribes treatment for a patient which was initiated by a specialist.

  • patient continues to be followed-up in reviews by the specialist
  • a clear plan of care and defined protocol, medication specific, with a statement of monitoring arrangements, and responsibilities of the specialist, GP and patient
  • GP can decide not to share care if they feel they can’t accept the responsibility, are not competent etc
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3
Q

What’s polypharmacy?

A
  • taking multiple medications concurrently to manage co-existing health problems
  • use of >4-5 medications per day or taking more medications than clinically required
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4
Q

How often should we review meds of 75 y old patient?

A
  • at least annually
  • 6/12 if taking ≥4 meds
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5
Q

Who can perform meds review?

A

Clinical pharmacist, doctor, PA, (for some drugs) nurse practitioner/nurse prescribers

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6
Q

What’s NO TEARS?

A

NO TEARS – mnemonic to maximise 10 minute consultations for med review

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7
Q

What’s ‘N’ in NO TEARS?

A

Need and indication

  • Does the patient know why they take each drug?
  • Is each drug still needed? Was long term therapy intended?
  • Is the diagnosis refuted? (cancelled/changed)
  • Is the dose appropriate? Would non-pharmacological treatments be better?
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8
Q

What’s ‘O’ in NO TEARS?

A

Open questions

  • Allows patients to express views
  • Helps to reveal any problems they may have
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9
Q

What’s ‘T’ in NO TEARS?

A

Test and Monitoring

  • Assess disease control. Any conditions under-treated?
  • Use appropriate reference for monitoring advice e.g. BNF, Shared care
  • protocols, NPHS Wales monitoring guidelines
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10
Q

What’s ‘E’ in NO TEARS?

A

Evidence and Guidelines

  • Has the evidence base changed since initiating drug?
  • Are any drugs now deemed ‘less suitable’?
  • Is dose appropriate? (Over or under-treatment, extreme old age)
  • Are other investigations now advised e.g. echocardiography?
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11
Q

What’s ‘A’ in NO TEARS ?

A

Adverse Events

  • Any side effects?
  • Any OTC or complementary medicines?
  • Check interaction, duplications or contra-indications.

Don’t misinterpret an adverse reaction as a new medical condition

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12
Q

What’s ‘R’ in NO TEARS?

A

Risk Reduction or Prevention

•Opportunistic screening and risk reduction – are drugs optimized to reduce the risks?

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13
Q

What’s ‘S’ in NO TEARS?

A

Simplification and Switches

Can treatment be simplified?

Explain any cost effective switches

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14
Q

What should we think of (during meds review) if pt uses PPI? (2)

A

Can they be stopped/reduced?

  • increased risk of GI infection
  • risk of fractures in high dose/prolonged use
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15
Q

What should we think of (during meds review) if pt uses quinine?

A

Can this be stopped? MHRA advice

Adverse effects: retinopathy, thrombocytopenia, tinnitus, lichen planus etc.

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16
Q

What should we think of (during meds review) in a patient who is on hypnotics/benzos?

A

Can we stop it?

Adverse effects: falls, addiction

17
Q

Metoclopramide

  • class
  • SEs
A

Metoclopramide

*should be used only short-term

Class: D2 receptor antagonist

SEs:

  • extrapyramidal effects: oculogyric crisis (particularly a problem in children and young adults)
  • hyperprolactinaemia
  • tardive dyskinesia
  • parkinsonism
  • Metoclopramide should be avoided in bowel obstruction, but may be helpful in paralytic ileus.
18
Q

How should we use antihistamines and why?

A

Short - term only

Example: chlorpheniramine

  • sedating
  • antimuscarinic properties (e.g. urinary retention, dry mouth)
19
Q

Alpha-blocker in men on med review - what should we think of?

A

Consider stopping in men with long-term care

Use: management of benign prostatic hyperplasia and hypertension

Examples: doxazosin and tamsulosin

Side-effects:

  • postural hypotension
  • drowsiness
  • dyspnoea
  • cough
20
Q

When should we stop bisphosphonates?

A

If the treatment is > 5 years long

21
Q

Cumulative GI risk in the following (3) drugs

A
  • SSRI
  • NSAID
  • aspirin
22
Q

What to check with Digoxin?

A
  • U+E
  • GFR

Consider stopping if ↓ eGFR

23
Q

Consideration for metformin (when to stop)

A
  • Check renal function
  • Reduce dose/stop if reduced eGFR
24
Q

What class of drug do we consider stopping in pt with dementia?

A

Consider reducing/stopping antipsychotics

25
Q

What class of drugs is better tolerated for use in depression in pt with dementia?

A

SSRI

26
Q

What classes of drugs can express anticholinergic effects?

A
  • H2RA
  • TCA
  • Antihistamines
27
Q
A
28
Q

List the drugs that may be associated with rapid symptomatic worsening/ withdrawal symptoms if stopped → require cautious and stepwise withdrawal

A
  • ACE inhibitors in HF (left ventricular impairment)
  • Diuretics in HF
  • Drugs for HR or rhythm control (Digoxin, b-blockers)
  • opioids
  • anti-depressants
  • antipsychotics
  • antiepileptics
  • Clonidine (alpha agonist → to treat HTN)
  • Baclofen
  • corticosteroids
  • benzodiazepines
29
Q

What drugs to withhold if a patient is severely dehydrated?

*severly means more than a pt suffering from minor D/V

A
  • ACE inhibitors/ Angiotensin Receptor Blockers
  • NSAIDs
  • Diuretics
  • Metformin

* drugs can be restarted again when pt has improved

* pt with advanced HF can decompensate rapidly when off drugs → specialist advice is needed

30
Q

Drugs in which specialist advice is advised before altering

A
  • anti-convulsants for epilepsy
  • anti-depressants, anti-psychotics, mood stabilising (e.g. Lithium)
  • drugs for management of Parkinson’s disease
  • Amiodarone
  • DMARDs, anti-rheumatic drugs
31
Q

Combinations of NSAIDs +… drugs or diseases that are classified as high risk

A

These combinations of NSAIDs +… should be avoid where possible

NSAIDs + … :

  • ACE inhibitors or Angiotensin receptor blockers + diuretics
  • in existing renal disease
  • diagnosis of HF
  • warfarin
  • age 75+ and no PPI cover
32
Q

Which combinations of drugs Warfarin +… should be avoided?

A

We should avoid combination of Warfarin +… :

  • another antiplatelet
  • NSAIDs
  • Macrolides
  • Metronidazole
  • azole anti-fungals
33
Q

What (3) drug classes to avoid in HF diagnosis

A
  • TCAs
  • NSAIDs
  • Glitazone