T-wave Changes + Hyperkalaemia Flashcards
1
Q
What causes T-wave inversion?
A
MI (+chest pain)
Myocardial ischaemia (+chest pain)
Left ventricular hypertrophy
LBBB
2
Q
What causes T-wave peaking/”tenting”?
A
Hyperkalaemia
3
Q
What other ECG changes may hyperkalaemia come with?
A
- Peaked T-waves
- P waves may be reduced
- QRS complexes may be broadened
4
Q
What can hyperkalaemia lead to?
A
Asystole
Ventricular fibrillation
- very serious
5
Q
What ECG changes are seen in hypokalaemia?
A
Flattened T-wave
May show U-wave after T-wave (subtle downward deflections)
6
Q
What can hypokalaemia lead to?
A
Cardiac arrhythmia
Constipation
Fatigue
7
Q
What is hypokalaemia commonly caused by?
A
Diuretic drugs (non-potassium sparing)
