Side effects and contraindications Flashcards

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1
Q

Aspirin, warfarin and heparin

A

Do not give to patients with bleeding risk (e.g. prolonged prothrombin time due to liver disease).
Remember prophylactic heparin is contraindicated in acute ischaemic stroke due to bleeding risk.

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2
Q

Steroid side effects?

A
Stomach ulcers
Thin skin
Oedema
Right and left heart failure
Osteoporosis
Infection (including candida)
Diabetes (more often hyperglycaemia)
Cushing's syndrome
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3
Q

NSAID side effects and contraindications?

A
NSAID
No urine (renal failure)
Systolic dysfunction (heart failure)
Asthma
Indigestion (any cause)
Dyscrasia (clotting abnormality)
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4
Q

Antihypertensives side-effect

A

Hypotension

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5
Q

Beta blockers

A

Bradycardia, wheeze in asthmatics, worsening of acute heart failure (but effective in chronic heart failure)

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6
Q

Calcium channel blockers

A

Bradycardia, peripheral oedema, flushing

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7
Q

ACE inhibitors

A

Electrolyte disturbance (hyperkalaemia) and dry cough

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8
Q

Diuretics - loop and K sparing

A

Electrolyte disturbance, renal failure.

Loop (e.g. furosemide) can cause gout. K sparing (e.g. spironolactone) can cause gynaecomastia.

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9
Q

Thiazide diuretics

A

Cause hypokalaemia by increasing potassium excretion by the kidneys.

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10
Q

Metoclopramide

A

Passes blood brain barrier and can exacerbate parkinsonian symptoms. Domperidone does not pass the BBB and is therefore safer.

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11
Q

Methotrexate

A

Withhold in potential sepsis!

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12
Q

Trimethoprim and methotrexate

A

Both are folate antagonists and cannot be taken together. This can lead to pancytopenia and neutropenic sepsis, due to bone marrow toxicity.

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13
Q

Prophylactic enoxoparin

A

Contraindicated following acute stroke (approximately for 2 months but varies by trust)

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14
Q

Clozapine

A

Agranulocytosis resulting in neutropenia

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15
Q

Digoxin toxicity effects

A

Confusion, nausea, visual halos, arrythmias

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16
Q

Lithium toxicity effects

A

Early - tremour
Intermediate - tiredness
Late - arrythmias, seizures, coma, renal failure, diabetes insipidus

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17
Q

Phenytoin toxicity side effects

A

Gum hypertrophy, atazia, nystagmus, peripheral neuropathy, teratogenicity

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18
Q

Gentamicin and vancomycin toxicity side effects

A

Ototoxicity and nephrotoxicity

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19
Q

Side effect of carbamazapine

A

Can lead to SIADH and therefore hyponatraemia

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20
Q

Slow AF

A

Withold digoxin

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21
Q

SIADH as a side effect

A
sulfonylureas*
    SSRIs, tricyclics
    carbamazepine
    vincristine
    cyclophosphamide
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22
Q

Drugs to be avoided during breastfeeding

A
antibiotics: ciprofloxacin, tetracycline, chloramphenicol, sulphonamides
    psychiatric drugs: lithium, benzodiazepines
    aspirin
    carbimazole
    methotrexate
    sulfonylureas
    cytotoxic drugs
    amiodarone
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23
Q

Drugs which can be given for women who are breastfeeding

A

antibiotics: penicillins, cephalosporins, trimethoprim
endocrine: glucocorticoids (avoid high doses), levothyroxine*
epilepsy: sodium valproate, carbamazepine
asthma: salbutamol, theophyllines
psychiatric drugs: tricyclic antidepressants, antipsychotics**
hypertension: beta-blockers, hydralazine
anticoagulants: warfarin, heparin
digoxin

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24
Q

What is tramadol notorious for?

A

Confusion in the elderly

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25
Q

What does cyclizine cause as a side effect?

A

Drowsiness and confusion can occur

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26
Q

When is methotrexate contraindicated?

A

In active infection

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27
Q

What are the rules surrounding use of NSAIDS and methotrexate

A

Use with caution as there is a risk of nephrotoxicity

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28
Q

What do loop diuretics and thiazide diuretics cause?

A

Hyponatramia and hypokalcaemia

29
Q

When should heparin prophylaxis not be taken?

A

Following acute stroke

30
Q

Why should beta blockers and verapamil not be mixed?

A

This causes severe bradycardia

31
Q

What are the causes of hypernatreamia?

A

Dehydration
Drips
Drugs
Diabetes insipidus

32
Q

Side-effects of lamotrigine?

A

Rash,

Rarely stephens-johnson syndrome

33
Q

Carbamazepine side-effects?

A
Hyponatraemia
Rash
Dysarthria
Ataxia
Nystagmus
34
Q

Phenytoin side-effects?

A

Ataxia, peripheral neuropathy, gum hyperplasia, hepatotoxicity

35
Q

Side effects of sodium valproate?

A

Tremour, teratogenicity, weight gain

36
Q

Levetiracetam side-effects

A

Fatigue, mood disorders, and agitation

37
Q

When should a laxative never be given?

A

Obstruction

38
Q

Gentamicin and vancomycin side effects

A

Nephrotoxicity, ototoxicity

39
Q

Any antibiotics, but particularly broad spectrum like cephalosporins or ciprofloxacin ADR

A

C. diff colitis

40
Q

ACE inhibitor ADR

A

Hypotension, electrolyte abnormalities, acute kidney injury, dry cough

41
Q

Beta-blockers

A

Hypotension, bradycardia, wheeze in asthmatics, worsens acute heart failure (but helps chronic heart failure)

42
Q

Calcium channel blockers (e.g. diltiazem)

A

Hypotension, bradycardia, peripheral oedema, flushing

43
Q

Diuretics

A

Hypotension, electrolyte abnormalities, acute kidney injury, subclass-dependent effects, e.g. spironolactone causes gynaecomastia

44
Q

Heparin

A

Haemorrhage (particularly renal failure or <50 kg)

Heparin induced thrombocytopaenia

45
Q

Warfarin

A

Haemorrhage (through has a procoagulant effect initially and takes a few days to work, thus need to prescribe heparin initially alongside until INR is 2)

46
Q

Aspirin

A

Haemorrhage, peptic ulcers, gastritis, tinnitus in large doses

47
Q

Digoxin

A

Nausea, vomiting, diarrhoea,
Blurred vision, confusion, drowsiness,
Xanthopsia (disturbed yellow/green visual perception, including ‘halo’ vision)

48
Q

How does low potassium affect digoxin?

A

Augments the effect

49
Q

How does high potassium affect digoxin?

A

Reduces the effect

50
Q

Amiodarone

A

Interstitial lung disease (pulmonary fibrosis)
Thyroid disease (both hypo and hyperthyrodism are reported, it is structurally related to iodine, hence its name amIODarone)
Skin graying
Corneal deposits

51
Q

Lithium

A

Early - tremour

Intermediate - tiredness

Late - arrythmias, seizures, coma, renal failure, diabetes insipidus

52
Q

Haloperidol

A

Dyskinesias, e.g. acute dystonic reactions, drowsiness

53
Q

Clozapine

A

Agranulocytosis (requires intensitve monitoring of FBC)

54
Q

Dexamethasone and prednisolone

A

STEROIDS

Stomach ulcers
Thin skin
Oedema
Right and left heart failure
Osteoporosis
Infection (including candida)
Diabetes (commonly causes hyperglycaemia, rarely progresses to diabetes)
Cushing's syndrome
55
Q

Fludrocortisone

A

Hypertension/ sodium and water retention

56
Q

Ibuprofen

A

NSAID

No urine (renal failure)
Systolic dysfunction (heart failure)
Ashma
Indigestion (any cause)
Dyscrasia (clotting abnormality)
57
Q

Simvastatin

A

Myalgia, abdominal pain, increase ALT/AST (can be mild), rhabdomyolysis (can be just mildly increased creatinine kinase though)

Management of statin-induced myalgia - exclude rhabdomyoltsis with creatinine kinase and urine dip. Otherwise, if symptoms unacceptable or CK very high (>2000), 1. ensure needs statin 2. reduce the dose 3. switch to other statin with lower risk of myalgia (risk of myalgias: simvastain > atorvastatin > pravastatin ?(fluvastatin) or a fibrate.

58
Q

If the scenario refers to low GCS or acidotic behaviour ,look for metformin in the question

A
59
Q

What can iodinated contrast media cause?

A

Renal failure

This may then be associated with increased risk of metformin induced lactic acidosis or ACE inhibitor associated kidney injury

60
Q

What are the most common enzyme inhibitors?

A

Ketoconazole, ciprofloxacin, erythromcyin, grapefruit juice

61
Q

What do beta blockers and verapamil cause?

A

Profound hypotension and asystole

62
Q

What happens if alcohol is drunk with metronidazole

A

Nausea and vomiting

63
Q

Metformin causes

A

lactic acidosis

64
Q

NSAIDS cause

A

GI bleeding

65
Q

Monoamine inhibitors cause

A

hypertensive crisis

66
Q

Warfarin and acute alcohol causes

A

Increased anticoagulation

67
Q

Warfarin and chronic alcohol causes

A

decreased anticoagulation

68
Q

Metronidazole and disulfiram cause

A

Sweating, nausea, flushing, vomiting

69
Q

Barbituates, opioids and benzodiazepines cause

A

Sedation