Hello, according to your description, compared with the influence of hyperkalemia on myocardium, it is easy to lead to arrhythmia, such as bradycardia and arrhythmia, and in severe cases, ventricular fibrillation and cardiac arrest are in diastolic state. Hyperkalemia is usually seen when there is a lot of cell destruction or renal insufficiency. When you have hyperkalemia, you should pay attention to avoid eating foods containing potassium, and pay attention to using potassium-expelling drugs in time. If necessary, you can do dialysis treatment.

suggestion: hyperkalemia is closely related to the decline of renal potassium excretion function, which is more common in patients with chronic renal failure and can also be seen in metabolic diseases. Attention should be paid to reduce potassium intake and avoid eating foods with high potassium content, such as oranges and bananas. Potassium-lowering resin can be used for oral treatment, or glucose plus insulin can be used for intravenous treatment to reduce potassium. If high potassium is serious, blood purification treatment is needed.

I hope my answer will help you, and I wish you good health!