Which of the following can lower hyperkalemia quickly?

Albuterol (salbutamol) is a bronchodilator that can indeed lower potassium levels in the blood, making it useful in the management of hyperkalemia. It works by stimulating β2-adrenergic receptors, leading to an increase in potassium uptake by the cells, which can help decrease serum potassium levels. This effect is particularly valuable in acute scenarios where rapid intervention is necessary.

While other options like insulin and dextrose are related to the treatment of hyperkalemia—since insulin also promotes cellular uptake of potassium, and dextrose is often administered alongside insulin to prevent hypoglycemia—the focus here on albuterol illustrates its unique pharmacological properties as a fast-acting treatment in certain contexts.

Lactated Ringer's solution, on the other hand, is primarily used for fluid resuscitation and does not directly address hyperkalemia.

In summary, albuterol's ability to act quickly to promote potassium uptake into cells makes it a viable option for managing hyperkalemia in urgent care settings.