Concentrated Questions Flashcards
Daily req of water
20-30ml/kg/day
Daily req of Na/K/CL
1mmol / kg / day
Daily req of glucose I
50-100g/day
What is resusc fluids
NaCL
NO K!!!
How quick do you give resusc fluids
15 mins
Normal fluids given iver
8-12 hours
Typical maintenance
One salt two sugar with KCL in each sugar
If giving multiple bags of NaCl be aware of
Hyperchloraemia
How much fluid can you prescribe at once
No more than 1 day worth
Most fluid bags are how many litres
1 litre
How many bags of NaCl can you give in a day
1
How much resusc fluids for kids
20mls per kg in 15 mins
Maintenance fluids for kids
100ml /kg/ day first 10kg
50ml/kg/ day next 10kg
20ml/kg/day for weight over 20kg
Can’t give aspirin in kids due to
Reye’s syndrome
What do you need to consider with fluid prescribing post operative my
Renal impairment due to either contrast or hypo volaemia
Bleeding intra and post op
Stopping warfarin before surgery
5 days
Stopping noacs before surgery
48hoirs
When to stop clopidogrel before surgery
Hold morning of surgery
When do you stop aspirin before surgery
7 days before
Name 4 drugs you withhold preop to prevent renal impairment
ACEI (hold morning of)
Metformin (hold 48 hours pre and post op)
NSAIDS (limit use pre and post op)
Gentamicin (avoid)
All surgical pets are prescribed
VTE prophylaxis (dalteparin) - different doses for prophylaxis and treatment
When do you need to half the dose of paracetamol
<50kg or significant renal dysfunction
When do you avoid NSAIDS
Asthma
Renal impairment
GI ulcer or bleed
Morphine is excreted via
Kidneys use oxy in impairment
4 common side effects of morphine
Itch nausea constipation drowsiness
What form of pain relief is given in Pts with poor swallow
Patch
5 class of drugs which exhibit anticholinergic activity and hence increased risk of falls and impaired cognition
Antidepressants Antipsychotics Antiemetics Antihistamines Benzos
What causes hupovokaemix hyponatraemia
D+V
Diuretics - loops and thiazides
What causes euvolaemic hyponatraemia
Hypothyroid
Addisons
SIADH - ppis ssris carbamazepine
What causes hupeevolaemic hyponatraemia
Liver failure
Renal failure
Heart failure
Drug causes of hyperkalaemia
ACEI
ARBS
Spironolactone / amiloride
Metformin NSAIDS gentamicin ( impair renal excretion)
Name 5 drugs which cause hyperglycaemia
Olanzapine (2nd gen antipsychotixsh Pred Tacrolimis (calcineurin inh) Beta blockers Thiazides
4 drugs which cause hypoglycaemia
Insulin
Sulphonylureas (gliclazide)
Pioglitazone
SGLT2
(NOT Metformin)
What is the normal QT
Male <440
Female <470
If long QT and untreated can lead to
Torsades de pointed
Treat torsades
Cardio vert and mgso4
Name 7 causes of long QT
Antipsychotics (haloperidol/ olanzapine)
Antidepressants (citalopram and venlafaxine)
Antiemetics (ondansetron)
Beta blockers (sotalol)
Flecaimide
Amiodarone
Abx- ciprofloxacin and erythromycin
CANNOT CO PRESCRIBE AZATHIOPRINE WITH
allopurinol (risk of life threatening myelosuppressjon)
Where is warfarin broken down in the body
Liver
INR …..,, by p450 inhibitors
Increases
INR …… by p450 inducers
Decrease
Name p450 inhibitors
Sodium valproate Isoniazid Cimetidine Ketokonazol Fluconazole Alcohol (binge) Chloramphenicol Erythromycin Sulphonamides Ciprofloxacin Omeprazole Metronidazole
P450 inducers examples
St John’s Wart Carbamazepine Rifampicin Alcohol (chronic) Phenytoin Griseofulvin (anti fungal) Phenobarbitone Sulphonylureas
When do you stop the statin if CK raised
If five times limit of normal or symptoms intolerable
When do you stop statins with abn LFTs
If three times limit of normal
What do you need to advise the other about warfarin other than bleeding risk and monitoring
Limit alcohol use
How often do you take bisphosphonates usually
Same day each week
How do you take bisphosphonates
Take on empty stomach and sit straight or stand for thirty minutes after it
What are the main risks of bisphosphonates (3)
Osteonecrosis of jaw
Atypical fractures
Upper GI effects
What decreases the absorption of bisphosphonates
Calcium salts
Food and drink
NSAIDS
How often do T1DM monitor insulin
4 times a day (before meals and befor bed)
Targwt hba1c
48
Target glucose levels before and after meals
4-7
5-9
What changes are made to insulin if unwell
BMs higher so higher nasal doses required
Pills decrease risk of
Endometrial and ovarian cancer
Pill increases risk of
Breast cancer
Tamoxifen increases risk of (3)
Endometrial and ovarian ca
VTE risk
Tamoxifen does what to warfarin
Increase efficacy
Common side effect of tamoxifen
Hot flushes
When do you stop Metformin
If egfr less than 30
When should sulphonylureas be give.
Morning
When should statins be given
Night
How long does it take for antidepressants to work in
6 weeks
Anti hypertensive in pregnancy
Labetolol
Common side effect of SSRI
Dry mouth
Symptoms of serotonin syndrome
Agitation
Pyrexia
Hallucinations
What three drugs cause agranulocytosis
Carbimazole
Carbamazepine
Clozapine
What must you check before starting azathioprine
TPMT activity
Methotrexate must be coprescribed with
Folic acid ( give on days not taking methotrexate)
UTI and pregnant give
Amoxicillin