pharmacology Flashcards
what abx lowers the seizure threshold?
ciprofloxacin- fluoroquinolone
Long QT is a well-recognised complication of using..? abx..
fluroquinolones ie ciprofloxacin/ levofloxacin
what GFR should metformin be stopped?
GFR <45
Drug-induced urinary retention?
criteria for liver transplantation
Inducers of the P450 system include
Cytochrome P450 Inhibitors
sildenafil are used to treat …?… in neonates
pulmonary hypertension
TCA amitriptyline od tx?
IV bicarbonate may reduce the risk of seizures and arrhythmias in severe toxicity
drugs that cause Corneal opacities
amiodarone
indomethacin
drugs causing Optic neuritis?
cataracts?
ethambutol
amiodarone
metronidazole
cataracts: steroids
treatment in opioid detoxification
Methadone
Lithium toxicity can be precipitated by …what pain killer.. other drugs..?
NSAIDs, thiazides
b blocker od, tx?
IV atropine
glucagon
Azathioprine monitoring bloods?
FBC LFT
diclofenac, are important to avoid in heart failure why?
can promote fluid retention
Carbon monoxide poisoning - most common feature
headache
class of drug?…..may cause precipitation of digoxin toxicity
The calcium channel blockers diltiazem and verapamil both increase serum digoxin levels.
reverse digoxin toxicity?
Digibind, Digoxin-specific antibody fragments
antedote Benzodiazepines ?
flumazenil
antedote methanol
ethanol
antedote salicylate?
urinary alkalinization with IV bicarbonate
haemodialysis- if having pulmonary odema and metabolic acidoosis
…. ?…. can reduce the effectiveness of the combined oral contraceptive pill
gentamicin toxicity …?
nehpro and ototoxicity
symptoms of lithium toxicity?
Diarrhoea, vomiting, abdominal pain, coarse tremor, weakness, seizures, muscle twitches and blurred vision are among the signs and symptoms of lithium toxicity
The risk of peripheral neuropathy with isoniazid can be reduced by prescribing ….
pyridoxine
Finasteride MOA
5 alpha reductase inhibitor which converts testosterone into DHT
DRUGS TO AVIOD IN CKD3? or kidney failure
antibiotics: tetracycline, nitrofurantoin
NSAIDs
lithium
metformin
metformin titration- how mnay days to wait before titrating it up?
Metformin should be titrated slowly, leaving at least 7 days before increasing the dose.
risks of taking allopurinol and azathioprine together
Allopurinol increases risk of azathioprine toxicity
causing pancytopenia
Adult Life Support (ALS) adrenaline doses
Recommend Adult Life Support (ALS) adrenaline doses
anaphylaxis: 0.5mg - 0.5ml 1:1,000 IM
cardiac arrest: 1mg - 10ml 1:10,000 IV or 1ml of 1:1000 IV
mum taking lithium- what can happen to baby?
Ebsteins anomaly Lithium can cause cardiac foetal abnormalities
what electrolyte inbalance predisposes patients to digoxin toxicity
hypokalemia
abx causing photo sensitivty?>
tetracyclines, sulphonamides, ciprofloxacin
diabetic drug causing Syndrome of inappropriate ADH secretion
GLIM-EPRIDE
Aspirin MOA?
Aspirin is a non reversible COX 1 and 2 inhibitor
Tinnitus may be one of the earliest symptoms of … OD?
aspirin
absolute contraindication to Sildenafil?
STROKE
MI
Visual changes secondary to drugs
DIG?
SIDENAFIL?
finasteride s/e?
diclofenac is contraindicated in patients with
ischaemic heart disease
peripheral arterial disease
cerebrovascular disease
congestive heart failure (New York Heart Association classification II-IV)
antifreeze /methanol antidote?
FOMEPIZOLE
iron tablets od vs organophosphate antedote?
Desferrioxmine
atropine
Patients with MI secondary to cocaine use should be given
IV benzodiazepines (diazepam) as part of acute (ACS) treatment
what to do every 6 months when taking amioderone?
TFT’S LFT’S
Ecstasy poisoning
Mefloquine S/E
neuropsychiatric side-effects
AVOID A history of anxiety or depression
What is the minimum time after ingestion of the tablets that a paracetamol level can be used to guide treatment with acetylcysteine?
4 hrs
following complications is most likely to occur as a result of heroin use
dvt
S/E?
S/E
DIABETIC DRUG CAUSING DIG TOXICITY
Thiazides may cause precipitation of digoxin toxicity
furosemide s/e
OTOTOXIC
MONTELUKAST S/E
ABNORMAL DREAMS
diarrhoea