Which of the following is a common side effect of sedation in patients?

Confusion is indeed a common side effect of sedation in patients. Sedation aims to relax a patient and reduce anxiety, which can sometimes lead to altered awareness and cognitive function. When sedatives depress the central nervous system, patients may have difficulty processing information, resulting in confusion or disorientation. This side effect is particularly important to monitor because it can affect a patient's ability to follow instructions or respond appropriately following the procedure.

In contrast, increased alertness, enhanced reflexes, and improved motor coordination are generally not associated with sedation. In fact, these effects would be contrary to the intended outcomes of sedation, which is designed to calm and minimize responsiveness, rather than heighten awareness or coordination.