QuestionSBA
QuestionChoice
Incorrect - U waves are usually the result of hypokalaemia. They are also seen in patients with ventricular hypertrophy, bradycardia, hypothyroidism, hypocalcaemia, and hypothermia.
10008396
b
Visible U Waves
QuestionChoice
Incorrect - ST depression is associated cardiac ischaemia, as well as hypokalaemia. It is not associated with hyperkalaemia.
10008398
d
ST Depression
QuestionChoice
Incorrect - Hyperkalaemia causes small or indiscernible p waves. They presence of large p waves is a sign of right atrial enlargement.
10008399
e
Increased amplitude of the P wave
QuestionChoice
Correct - Tall, tented T waves on ECG are a common sign of hyperkalaemia. This must be treated urgently, to avoid progression into a potentially fatal arrhythmia.
10008395
a
Tall, tented T waves
QuestionChoice
Incorrect - Hyperkalaemia causes widening of the QRS complex. A narrow QRS complex reflect rapid activation of the ventricles through a normal His-Purkinje system.
10008397
c
Narrowing of the QRS complex
Concept
Chapter
2693
3799
ECG
Topic
159
Cardiovascular physiology
14226
A 56-year-old women presents to the accident and emergency department with heart palpitations, shortness of breath, and chest pain. An ECG is performed.

Which of the following ECG changes is indicative of hyperkalaemia?
a