24 - hyperkalemia Flashcards
1
Q
what is initial question?
A
is it really hyperkalemia
2
Q
main cause of hyper and 2 others
A
failure to excrete - renal failure and meds cell death - crush, burns, hemolysis shifts from cells
3
Q
ECG changes in hyper
A
- tall peaked Ts and ST depression
- loss of P
- widening of QRS
- finally dev. of sine waves
4
Q
*when to treat as hyper
A
PT comes in in extremis and ECG consistent
5
Q
3 goals of mgmt
A
- protect heart
- drive K into cells
- increase excretion
6
Q
how to protect heart
A
antagonize by giving IV Ca
7
Q
how to shift into cells
A
- insulin and D50W
- beta agon - salbutamol
- bicarb
8
Q
how to excrete
A
exchange resins
- sorbitol
