Side effects Flashcards

(73 cards)

1
Q

What causes hypoglycaemia

A

Insulin + Sulphonureas

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2
Q

What causes hyperglycaemia

A

Steroids, antipsychotics, thiazides, beta blockers, tacrolimus

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3
Q

What causes constipation

A

Opioids, iron, CCBs (amlodipine, verapamil), some diuretics, some antiemetics (ondansetron, metoclopramide), some antiepileptics, some Parkinson’s medications, antacids that contain calcium, anticholinergics (antidepressants, antihistamines, incontinence medications, antipsychotics)

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4
Q

What causes diarrhoea

A

Antibiotics (C. diff), colchicine, metformin, PPIs, antacids that contain magnesium, laxatives

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5
Q

Urinary retention

A

Opioids, anticholinergics, amitryptyline/trycyclic antidepressant, NSAID, dysopyramide

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6
Q

Urinary incontinence

A

Alpha blockers, anti cholinesterase inhibitors, diuretics, clozapine

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7
Q

Confusion

A

opioids, sedatives, anticholinergics

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8
Q

Falls

A

Benzodiazepines, TCA, SNRI, MAO, antipsychotics, antihypertensives, parkinson medication (ropinirole, selegiline), antiepileptics

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9
Q

Hypertension

A

NSAIDS, steroids oral contraceptives, mirabegron

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10
Q

High cholesterol

A

Steroids, thiazides

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11
Q

Hypokalaemia

A

Loop diuretics (furosemide, bumetanide)
Thiazides
Steroids
Salbutamol

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12
Q

Hyperkalemia

A

K+ sparing diuretics (spironolactone, eplerone, amiloride, triamterene)
ACE inhibitors (lisinopril)
ARBs (losartan, candesartan)
Unfractioned heparin/LMWH
Blood transfusion

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13
Q

Hyponatreamia

A

SSRIs (sertraline, citalopram, fluoxetine)
TCAs (amitriptyline)
Carbamazepine
Opiates
PPIs (omeprazole, lansoprazole)

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14
Q

Hypernatraemia

A

Lithium
Demeclocycline

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15
Q

What is continued in intercurrent illness

A

double dose steroid

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16
Q

What should be stopped in intercurrent illness

A

metformin, statins, -glifozins

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17
Q

What should be stopped when planning to have a child

A

isotretinoin, methotrexate, warfarin, phenytoin, sodium valproate

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18
Q

Contraindicated in breast feeding

A

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

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19
Q

Safe for breast feeding mothers

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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20
Q

Stop prior to surgery

A

DOACS (48h), CLOPIDPGREL (7d), warfarin bridging plan

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21
Q

Worsen parkinsons

A

antipsychotics (haloperidol), metoclopramide, antidepressants

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22
Q

To avoid in Myasthenia gravis

A

Antibiotics, Beta blockers, Local anaesthetics, sedating drugs

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23
Q

Worsens psoriasis

A

Beta blockers, lithium, abx

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24
Q

Worsens heart failure,

A

NSAIDS, CCBS, Pioglitazone

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25
Steroid endorphins SEs
impaired glucose regulation increased appetite/weight gain hirsutism hyperlipidaemia
26
MSK steroid SE
osteoporosis proximal myopathy avascular necrosis of the femoral head
27
Steroid Psych SE
insomnia mania depression psychosis
28
GI Steroid side effects
Peptic ulceration acute pancreatitis
29
Ophthalmic steroid side effects
glaucoma cataracts
30
Mineralcorticoid side effects
Fluid retention Hypertension
31
What happens if steroids withdrawn abruptly
Addisonian crisis
32
When should steroids be withdrawn gradually
received more than 40mg prednisolone daily for more than one week received more than 3 weeks of treatment recently received repeated courses
33
What is mechanism of action of methotrexate
Methotrexate is an antimetabolite that inhibits dihydrofolate reductase, an enzyme essential for the synthesis of purines and pyrimidines.
34
What are adverse effects of methotrexate
mucositis myelosuppression pneumonitis the most common pulmonary manifestation similar disease pattern to hypersensitivity pneumonitis secondary to inhaled organic antigens typically develops within a year of starting treatment, either acutely or subacutely presents with non-productive cough, dyspnoea, malaise, fever pulmonary fibrosis liver fibrosis
35
How long should pregnancy be avoided if taking methotrexate
women should avoid pregnancy for at least 6 months after treatment has stopped the BNF also advises that men using methotrexate need to use effective contraception for at least 6 months after treatment
36
What should be routinely monitored when taking methotrexate
FBC, U&E and LFTs need to be regularly monitored. The Committee on Safety of Medicines recommend 'FBC and renal and LFTs before starting treatment and repeated weekly until therapy stabilised, thereafter patients should be monitored every 2-3 months'
37
What should be co prescribed with methotrexate
folic acid 5mg once weekly should be co-prescribed, taken more than 24 hours after methotrexate dose
38
What should be avoided with methotrexate
avoid prescribing trimethoprim or co-trimoxazole concurrently - increases risk of marrow aplasia high-dose aspirin increases the risk of methotrexate toxicity secondary to reduced excretion
39
Methotrexate toxicity treatment
folinic acid
40
What causes oral thrush
Amoxicillin and inhaled corticosteroids can cause oral thrush
41
What is Symbicort
Inhaled corticosteroid
42
Treatment for oral thrush
nystatin drops
43
What causes euglycemic DKA
Canagliflozin – SGLT2s (e.g. dapagliflozin/empagliflozin) can cause DKA without marked hyperglycaemia
44
What is associated with fourniers gangrene
SGLT 2 inhibitors (gliflozins)
45
What is long QT syndrome
delayed repolarization of the ventricles. It is important to recognise as it may lead to ventricular tachycardia/torsade de pointes and can therefore cause collapse/sudden death. A normal corrected QT interval is less than 430 ms in males and 450 ms in females.
46
What drugs prolong QT interval
amiodarone, sotalol, class 1a antiarrhythmic drugs tricyclic antidepressants, selective serotonin reuptake inhibitors (especially citalopram) methadone chloroquine terfenadine** erythromycin haloperidol ondanestron
47
What combination of drugs can cause QT prolongation
terfenadine- a non-sedating antihistamine and classic cause of prolonged QT in a patient, especially if also taking P450 enzyme inhibitor, e.g. Patient with a cold takes terfenadine and erythromycin at the same time
48
What can happen when you take ondansetron and serotonin together
Serotonin syndrome
49
what is serotonin syndrome
Excess serotonin (e.g. SSRI/SNRI in combination with another medication that will increase serotonin levels)
50
What are the symptoms of serotonin syndrome
Confusion Agitation Muscle twitching Sweating/shivering Diarrhoea Seizures Arrythmias Unconsciousness
51
Serotonin syndrome treatment
Treatment: supportive care, IV fluids, stop serotonergic agents, benzodiazepines, ITU etc. (it gets complicated!)
52
Causes of Galactorrhoea
metoclopramide, domperidone phenothiazines haloperidol very rare: SSRIs, opioids (Citalopram, olanzapine)
53
What to avoid in Parkinson's
Typical antipsychotics - Chlorpromazine - haloperidol D2 antagonists – worsens Parkinson’s disease symptoms Atypical antipsychotics - Clozapine - amisulpiride, - risperidone, - quetiapine, - olanzapine D2 and 5-HT antagonists - less extrapyramidal side effects than the typicals Antiemetics - Chlorpromazine - metoclopramide - prochlorperazine Antidepressants - Phenelzine, -tranylcypromine, - isocarboxazid, -amoxapine Act on different receptors but can have bad side effects when used in combination with Parkinson’s disease medications)
54
Adverse effects of statins
- myopathy: includes myalgia, myositis, rhabdomyolysis and asymptomatic raised creatine kinase. - liver impairment: the 2014 NICE guidelines recommend checking LFTs at baseline, 3 months and 12 months. Treatment should be discontinued if serum transaminase concentrations rise to and persist at 3 times the upper limit of the reference range
55
Statin contraindications
macrolides (e.g. erythromycin, clarithromycin) are an important interaction. Statins should be stopped until patients complete the course pregnancy
56
Who should receive statin
- all people with established cardiovascular disease (stroke, TIA, ischaemic heart disease, peripheral arterial disease) - anyone with a 10-year cardiovascular risk >= 10% - patients with type 2 diabetes mellitus should now be assessed using QRISK2 like other patients are, to determine whether they should be started on statins - patients with type 1 diabetes mellitus who were diagnosed more than 10 years ago OR are aged over 40 OR have established nephropathy
57
What are the 5HT3 antagonists
ondansetron palonosetron
58
adverse effects of 5HT3 antagonists
prolonged QT interval constipation is common
59
ACE inhibitor side effects
--cough -angioedema: may occur up to a year after starting treatment -hyperkalaemia -first-dose hypotension: more common in patients taking diuretics
60
Who should avoid ace INHIBITORS
pregnancy and breastfeeding - avoid renovascular disease - may result in renal impairment aortic stenosis - may result in hypotension hereditary of idiopathic angioedema specialist advice should be sought before starting ACE inhibitors in patients with a potassium >= 5.0 mmol/L
61
What must be monitored when taking ace inhibitors
urea and electrolytes should be checked before treatment is initiated and after increasing the dose a rise in the creatinine and potassium may be expected after starting ACE inhibitors acceptable changes are an increase in serum creatinine, up to 30% from baseline and an increase in potassium up to 5.5 mmol/l. significant renal impairment may occur in patients who have undiagnosed bilateral renal artery stenosis
62
WHAT ARE 5ASA
Aminosalycilates - local anti inflammatory in colon
63
Sulphasalazine side effects
rashes, oligospermia, headache, Heinz body anaemia, megaloblastic anaemia, lung fibrosis
64
mesalazine side effects
GI upset, headache, agranulocytosis, pancreatitis*, interstitial nephritis
65
What are aminosalycalates associated with
agranulocytosis - FBC is a key investigation in an unwell patient taking them.
66
WHAT IS mOrE coMMON IN MESALAZINE THAN SULFASALAZINE
Pancreatitis
67
How should amiodarone be administered
should ideally be given into central veins (causes thrombophlebitis)
68
Amiodarone interactions
has proarrhythmic effects due to lengthening of the QT interval interacts with drugs commonly used concurrently (p450 inhibitor) e.g. Decreases metabolism of warfarin
69
What to monitor in amiodarone [patients
TFT, LFT, U&E, CXR prior to treatment TFT, LFT every 6 months
70
Adverse effects of amiodarone
thyroid dysfunction: both hypothyroidism and hyper-thyroidism corneal deposits pulmonary fibrosis/pneumonitis liver fibrosis/hepatitis peripheral neuropathy, myopathy photosensitivity 'slate-grey' appearance thrombophlebitis and injection site reactions bradycardia lengths QT interval
71
aZAthioPRINe
bone marrow depression consider a full blood count if infection/bleeding occurs nausea/vomiting pancreatitis increased risk of non-melanoma skin cancer
72
tamsulosin side effects
Syncope, Angina, Dyspnoea
73