What side effect should a nurse monitor for in a client who has been administered scopolamine?

The administration of scopolamine is often associated with anticholinergic effects due to its mechanism of action as a muscarinic antagonist. One of the common side effects to monitor for is dry mouth, which occurs because scopolamine inhibits the secretion of saliva. This condition, known as xerostomia, can be uncomfortable for the patient and may increase the risk of dental problems over time if not managed.

The other potential effects listed, such as increased appetite, excessive sweating, or skin rash, are not typically associated with scopolamine. Instead, scopolamine may lead to a decreased appetite as part of its effects. Excessive sweating is more aligned with cholinergic effects, where increased sweating would be countered by scopolamine's inhibitory actions. A skin rash is not a common result of scopolamine use either, although allergic reactions or side effects from medications can vary. Monitoring for dry mouth is particularly important, as it is a direct and well-documented consequence of scopolamine's action on salivary glands.