Drugs Flashcards
What does metronidazole do to the anticoagulation effect of Warfarin?
Increase
How do thiazides affect sodium?
Hyponatraemia
Side effect of DPP4 inhibitors (sitagliptin)?
Pancreatitis
What electrolyte abnormality can phenytoin cause?
Hypocalcaemia
When to stop Warfarin prior to surgery?
5 days
INR and surgery?
if INR < 1.5, surgery is ok
When is metformin contraindicated?
eGFR < 30
Which analgesia commonly causes urinary retention?
Opiates
SE of methotrexate?
Bone marrow suppression - leukopenia
Teratogenic
SE of leflunomide?
HTN
Peripheral neuropathy
SE of sulfasalazine?
Oligospermia
SE of hydroxychloraquine?
Nightmares
Decreased visual acuity (macular toxicity)
SE of anti-TNF drugs?
Reactivation of TB and Hep B
SE of rituximab?
Night sweats
Thrombocytopenia
Which factors make paracetamol OD high risk?
Chronic alcohol use
HIV
Anorexia
P450 inducers
p450 inducers?
St Johns Wort
Carbimazipine
Rifampicin
Phenytoin
H2 receptor antagonist use?
Antacids
Alpha 1 agonist use?
Decongestants (phenylephrine)
Dopamine antagonist use?
Metoclopramide
Schizophrenia
Beta 1 agonist use?
Inotropes
Beta 2 agonist use?
Bronchodilators
Which drug stimulates the release of vWF?
Desmopressin
Ondansetron is ?
Serotonin antagonist
Triptans are?
Serotonin agonists
SE of ketoconazole?
gynaecomastia
Drugs that cause drug induced cholestasis?
COCP
Antibiotics: flucloxacillin, co-amox, erythromycin
Anabolic steroids, testosterone
Chlorpromazine, prochlorperazine
Sulphonylureas
Drugs that can cause liver cirrhosis?
Methotrexate
Methyldopa
Amiodarone
SE of cyclosporin?
Hepatotoxicity
SE of latanoprost?
Eye lash growth
How long should there be in between taking thyroxine and calcium/iron?
4 hours
How does prednisolone effect anticoagulation effect of warfarin?
Increase
Warfarin SE?
Skin necrosis
Reversal agent of dabigatran?
Idarucizumab
Type of anaemia with methotrexate use?
Megaloblastic microcytic (due to folate deficiency)
Ototoxic drugs?
Aminoglycosides (gentamicin)
Furosemide
Aspirin
Cytotoxic agents
When should oral tetracyclines be avoided?
Pregnancy
Breast feeding
Children < 12 years
Drugs that cause aplastic anaemia?
Cytotoxics
Chloramphenicol
Phenytoin
Sulphonamides
Gold
Drugs that can cause warm autoimmune haemolytic anaemia?
Methyldopa
H1 receptor antagonist use?
Hayfever
Drugs associated with erythema multiforme?
Aminopenicillins
Sulfonamides
Carbamazepine
Allopurinol
NSAIDs
Oral contraception
Electrolyte abnormality that phenytoin can cause?
Hypocalcaemia
MOA of fondiparinaux?
Activates antithrombin III which in turn inhibits factor Xa
Common SE of metaclopramide?
Diarrhoea
What type of drug is Bumetanide?
Loop diuretic
Thiazide affect on calcium?
Hypercalcaemia
Hypocalciuria
Common side effect of indapamide in males ?
Erectile dysfunction
SE of beta blockers?
Insomnia
Drug which most commonly causes angio-oedema?
ACEi
Abx which lower seizure threshold?
Quinolones (Ciprofloxacin)
Which 2 drugs interact to cause sever bone marrow suppression?
Azothioprine and allopurinol
1ml of Insulin is how many units?
100 units
Common cause of urticaria?
Aspirin
Management if GI SE of alendronate?
Switch to risedronate
Drugs that interact with statins?
Erythromycin and clarithromycin
P450 inhibitors? (O DEVICES)
Omeprazole
Disulphram
Erythromycin
Valproate
Isoniazid
Ciprofloxacin
Ethanol
Sulphonamides
Thiazides affect on glucose tolerance?
Worsen
Dugs which can cause gingival hyperplasia?
Cyclosporin
CCBs
Phenytoin
(AML)
Measalazine can cause drug induced?
Pancreatitis
What typeof drug is dorzolamide?
Carbonic anhydrase inhibitor
Which antibiotics cause ototoxicity?
Aminoglycosides
Nitrates SE?
Hypotension
Headache
Tachycardia
Flushing
Drugs that can cause tinitus?
Loop diuretics
NSAIDs/Aspirin
Quinine
Aminoglycosides
Azothioprine and pregnancy?
Safe in pregnancy
Lithium level testing?
Check levels 7 days after dose change, 12 hours after the last dose
Once stable 3 monthly
What should be checked prior to starting azathioprine?
ECG (rule out long QTc)
Baseline LFTs
Ondansetron receptor?
5-HT3 antagonist
Works on medulla oblongata
SE: Constipation, long QT
Vancomycin and renal failure?
Vancomycin requires therapeutic monitoring in patients with renal failure
Drug induced pancreatitis?
(SAM F BS)
Sodium valproate
Foroesomide
Mesalazine
Azothioprine
Steroids
Bendroflumethiazide
What drug can cause ulceration of the gi tract?
Nicranodil
Electrolyte abnormality that trimethoprim can cause?
Hyperkalaemia (due to renal tubular dysfunction, also causes rise in creatinine )
What cardiac arrhythmia can macrolides cause?
Tdp
What drug can precipitate digoxin toxicity?
Thiazides
Cause of TDP?
Azithromycin
Hepatotoxic anaesthetic agent?
Halothane
Fomepizole?
Ethylene glycol toxicity management (anti-freeze)
Also ethanol / haemodialysis
What do thiadiadonze do?
Increase insulin sensitivity
Varenicline?
Nicotine partial agonist
Bupropion
Norepinephrine and dopamine reuptake inhibitor, and nicotinic antagonist
When is bupropion contraindicated?
Bupropion should not be used in a patient with epilepsy as it reduces seizure threshold
When should clopidogrel be discontinued before surgery (elective)?
7 days prior
How many hours after ingestion should lithium be measured?
12 hours
Lithium monitoring?
Lithium level weekly until stable then 3 monthly
U+Es and TFTs 6 monthly