high value stuff Flashcards
what are the common CYP450 inducers
These are the SCRAPB ones that keep going
Sulphonyureas
Carbamezapine
Rifampacin
Alcohol (chronic)
Phenytoin
Barbituates
what are the common CYP 450 inhibitors
AO DEVICES
Allupourinol
Oemeprazole
Disulfarim
ETOH (acute, think competing)
Valproate
Isoniazid (with macrolides think TB!)
Ciprofoxacin
erythromycin
Sulphonamides (Abx)
FTU
finger tip unit that is use or topical Tx and is enough to cover one side of an adult hand
What drugs should be stopped pre-operatively
I LACK OP
Insulin (often day of? take pt experiece)
lithium (day before)
Anticoags/platelets
COCP/HRT
K+ sparing diuretics
Oral hypoglycaemics
Perindopril and other ACEi
Blleding drugs
glucose drugs
K+ increasing drugs
Lithium
what complication occurs when stopping A?metformin and B? other oral hypoglycaemics and insulin when a patient is NBM
A) metabolic lactic acidosis
B) hypoglycaemia
when reviewing ACEi what parameter should be checked
Serum potassium and stop/hold if high and avoid fluid containing K+
when reviewing a prescription what should be checked per drug
PRrSCRIBER
Pt details (Name DOB and Hospital number)
Reactions and allergies
Sign the front of the answers
Contraindications for each drug
Route
IV fluids needed?
Blood clot prophylaxis needed?
anti-Emetic needed?
pain Relief needed?
Glucocortidoid side effects
STEROIDS
Stomach ulcers
Thin skin
oEdema
Right and left heart failure
Osteoperosis
Infections
Diabetes
cushings Syndrome
common NSAID side effects
Lungs: asthma
Heart: HF
GI: ulcers/dyspepsia, bleeds
Renal: pre-renal AKI
Blood: bleeds and anaemias / dyscrasias
which antihypertensive causes gout?
thiazide diuretics
(they increase PCT uric acid resorption)
which antihypertensive causes gynaecomastia
Spironolactone
side effects of antihypertensives
hypotension
bradycardias - BB, rate slowing CCB
electrolyte disturbances - ACEi, diuretics
NBM and medications?
they should usually continue to receive oral medications ? If Safe swallow
crystalloid vs colloid in acute resus?
crystalloid. colloid (which has proteins with similar levels to blood to prevent intravascular fluid depletion by keepign oncotic pressure high) has increased risk of anaphylaxis
fluid replacement in ascites
HAS
useful as it maintains oncotic pressure preventing third spacing. useful before therapeutic paracentesis when ascites may compress vessels so when uncompressed there will be intravascular depletion
maximal rate of potassium administration
nothing more than 10mmol/hour
fluid bolus for resus/dehydration if hypotensive or tachycardic
500ml STAT IV 0.9% SODIUM CHLORIDE
(250ml if Hx of HF)
fluid replacement if oliguric?
ENSURE THERE IS NO URINARY OBSTRUCTION
give 1L over 2-4 hours and then reassess
(if only oliguric/anuric: 500ml fluid depletion, if oliguric/anuric + tachy: 1L fluid deficit, if oliguric/anuric + tachy + hypotensive >2L fluid depletion)
daily maintanence luid requirements
3L over 24 hours for adults (can be 2 for elderly)
One 0.9% NaCl and then 2 5% dextrose (all over 8 hours if 3 bags or 2 hours if 2 bags)
40mmol potassium per day (!!!!if there is normal potassium!!!) usually 20mmol KCl over 2 bags
what should you check before prescribing fluids
Fluids status: JVP, lung fields, sacral and peripheral oedema, BP, mucous membranes and skin turgor
is there any indication there is Era
obstruction
Hx HF
CI of VTE compression stockings
Signs of PAD or ABPI <0.6
CI of metoclopromide
works through dopamine receptor antagonism. this should be avoided in parkinson’s patients (worsening) or young women (dyskinesias especailly acute dystonia)
Analgesia of painful diabetic neuropathy
duloxetine 60 mg PO OD
Analgesia of neuropathic pain
amitryptilline or pregabalin
then amitryptilline and pregabalin
refer to specialist with tramadol in the interim