Hypokalaemia Flashcards
1
Q
What are the features?
A
U have no Pot and no T, but a long PR and a long QT
U wave No P wave No/inverted T wave Long PR Long QT
2
Q
What causes hypokalaemia?
A
GI losses:
- Diarrhoea
- Vomiting
Renal losses:
- Diuretics
- XS mineralocorticoids
Intracellular shift:
- B2-adrenergic stimulation
- Insulin
- Alkalosis
3
Q
What SX?
A
Muscle weakness Cramping Fasciculation Tetany Hypotonia
4
Q
What does it predispose to?
A
Digoxin toxicity
5
Q
MX?
A
Correct cause
Mild - oral K+ supplements
Severe - IV K
- be careful <20mmol/h
