Which of the following findings may indicate a patient is at risk for infection?

Altered tissue integrity is a critical indicator of a patient's risk for infection. When the integrity of skin or mucosal barriers is compromised—such as through cuts, abrasions, surgical incisions, or other injuries—pathogens have an increased opportunity to enter the body. Skin serves as a primary defense mechanism against infections, so any alterations can undermine this protective barrier.

In contrast, improved skin condition, stable vital signs, and decreased mobility do not inherently suggest an increased risk for infection. Improved skin condition typically reflects healing and robust tissue integrity. Stable vital signs indicate that the patient is in a stable physiological state, which often correlates with a lower risk of infection. While decreased mobility may relate to other health concerns, it does not directly imply a higher risk for infections unless accompanied by other factors affecting skin integrity or hygiene. Therefore, altered tissue integrity stands out as a clear risk factor for infections in this context.