Key result
Severe hyperkalemia causes complete AV block with narrow QRS presenting as profound bradycardia.
This case highlights that hyperkalaemia can induce complete atrioventricular block presenting with a narrow QRS complex.
Clinicians should consider hyperkalaemia in narrow-QRS complete AV block; single case leaves open prevalence and management implications.
A 77 year old woman was admitted to the hospital because of dyspnoea and dizziness for 3 hours. Upon physical examination, her blood pressure was 80/40 mm Hg, with a regular pulse rate of 33 beats per minute. The ECG on admission exhibited P waves with a rate of 100 beats/min and a positive pattern in …
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NH Kim (2004) studied this question. Hyperkalaemia induced complete atrioventricular block with a narrow QRS complex in a 77-year-old woman presenting with hypotension and a pulse rate of 33 beats per minute.
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