A nurse is caring for a client with type 2 diabetes.
Which of the following medications is used to treat elevated blood sugar levels?

Choice A rationale

Azithromycin can prolong the QT interval, leading to potential cardiac arrhythmias. Patients with a history of prolonged QT interval or other heart conditions should be monitored closely.

Choice B rationale

Constipation is not commonly associated with azithromycin use. Gastrointestinal side effects may include diarrhea or nausea but not constipation.

Choice C rationale

While tachycardia can be a side effect of some medications, azithromycin is more commonly associated with QT prolongation rather than causing increased heart rate directly.

Choice D rationale

Hyperkalemia is not typically a concern with azithromycin. Electrolyte imbalances are not a common side effect of this antibiotic.

Choice A rationale

Controlled substances have a potential for dependence because they can cause physical and psychological dependence when misused. The dependence is characterized by withdrawal symptoms when the substance is not used, and it is a key factor in the regulation of these substances.

Choice D rationale

Controlled substances have a Schedule classification as mandated by the Controlled Substances Act (CSA). The schedule classification indicates the potential for abuse and medical use, with Schedule I substances having the highest potential for abuse and no accepted medical use, while Schedule V substances have the lowest potential for abuse.