Which aspect is a sign of cognitive impairment affecting urinary function?

Forgetting to use the bathroom is a significant indicator of cognitive impairment that can directly affect urinary function. This behavior often arises from difficulties in memory, attention, or executive functioning—common challenges faced by individuals with cognitive decline. When someone forgets to use the bathroom, it may suggest that they have trouble recognizing bodily cues or fail to recall the routine of using the restroom. Such an oversight can lead to accidental incontinence or prolonged discomfort, highlighting the connection between cognitive abilities and the management of urinary needs.

In contrast, the other options relate to factors that do not necessarily signify cognitive impairment affecting urinary function in the same direct manner. For example, the ability to follow complex instructions may remain intact even as cognitive abilities decline regarding routine tasks. Frequent urinary infections can occur for various physiological reasons unrelated to cognitive decline. Lastly, a person may still remember when they last urinated, which does not reflect a failure to manage urinary function due to cognitive issues. Therefore, forgetting to use the bathroom stands out as a clear reflection of how cognitive impairment can impact urinary function.