Final answer:
The information suggesting successful teaching includes understanding that hyperkalemia can cause cardiac dysrhythmias and muscle weakness, and that insulin helps move potassium into cells. However, the claim that hyperkalemia is treated with potassium supplements is incorrect, as this would worsen the condition. The correct options are A, B, and C.
Step-by-step explanation:
The information from the staff that indicates the nurse's teaching about hyperkalemia was successful includes the following statements: a) "Hyperkalemia may lead to cardiac dysrhythmias.", b) "Potassium levels above normal can cause muscle weakness.", and c) "Insulin helps shift potassium into cells." Each of these statements is accurate and reflects an understanding of the condition and its treatments.
Hyperkalemia, an elevated level of potassium in the bloodstream, can cause a series of health issues including cardiac dysrhythmias, which is an irregular heartbeat that can be fatal if not treated promptly. It is also linked to muscle weakness because of the effect of high potassium levels on skeletal muscle fibers. Insulin is used in the management of hyperkalemia because it helps to move potassium from the blood into cells, hence lowering the levels in the bloodstream.
However, the statement d) "Hyperkalemia is typically treated with potassium supplements." is incorrect because potassium supplements would exacerbate, rather than treat, hyperkalemia as this condition means there's too much potassium, not too little.