![]() Although severe cases may be associated with paralysis and cardiac arrest, symptoms in the majority of cases are nonspecific, including muscle pain/weakness, nausea, vomiting, and abdominal pain. Hyperkalemia is a common and a potentially life-threatening electrolyte disorder in patients presenting to the Emergency Department. These findings, in particular the very wide QRS complexes with bizarre morphologies, are consistent with hyperkalemia. This ECG shows an irregular wide complex rhythm with an average ventricular rate of 72 bpm, right axis deviation, no discernable P-waves, and a prolonged QRS duration at 200 ms with an intraventricular conduction delay. ![]() His initial heart rate was 25 with a blood pressure of 80/30. He is minimally responsive and there is no additional history available.
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