PSA Flashcards
(263 cards)
What percentage of potassium correlates with 20mmols?
0.15%
What percentage of potassium correlates with 40mmol?
0.3%
How much hydrocortisone is 5mg prednisolone equivalent to?
20mg
How much dexamethasone is 5mg prednisolone equivalent to?
750micrograms
Name some stimulant laxatives?
Senna
Bisacodyl
Rectal glycerol suppository
When is bisacodyl contraindicated?
Bowel obstruction
Acute abdominal conditions
Acute IBD
Severe dehydration
Name some osmotic laxatives?
Lactulose
Macrogol
How does macrogol work?
Draws water in from large bowel
When is macrogol not recommended?
If patient already bloated - SE is bloating
What kind of laxative is docusate?
Softener & stimulant
Name some bulk forming laxatives?
Ispaghula husk
Methylcellulose
Sterculia
When are bulk forming laxatives indicated?
Adults with small hard stools if fibre cannot be increased in the diet.
What symptoms may be exacerbated with BFL?
Symptoms of flatulence, bloating, and cramping
How long do BFL take to work?
72hrs
How do you treat patients with opioid induced constipation?
An osmotic laxative (or docusate sodium to soften the stools) and a stimulant laxative is recommended.
What should be avoided in opioid induced constipation?
Bulk-forming laxatives
What does co- codamol contain?
Paracetamol and codeine
Post- op pain ladder?
- Reg paracetamol
- Reg codeine/ dihydrocodeine
- Reg/ PRN morphine sulphate (modified release)
4.. Reg/ PRN morphine sulphate (immediate release)
When is fluid resuscitation used?
When haemodynamically unstable
When is replacement used?
Losses e.g. N&V, DKA
When is maintenance used?
Nil by mouth
How much water /kg per day in maintenance ?
25-30ml/kg/day
How much Na+/K+/Cl- /kg per day in maintenance ?
1mmol/ kg
How much glucose per day in maintenance ?
50-100g/ day