What intervention would best support Ms. Yu's need for uninterrupted sleep at night?

Placing a PureWick catheter is the most effective intervention for Ms. Yu's need for uninterrupted sleep at night. This device is designed to manage urinary incontinence by drawing urine away from the body, which can help prevent nighttime interruptions caused by the need to use the bathroom. By using this catheter, Ms. Yu can avoid the discomfort and potential sleep disturbances that come from needing to get up frequently during the night to void, thus allowing her a higher chance of achieving uninterrupted sleep.

Other options, while potentially helpful in specific contexts, do not directly address the purpose of providing uninterrupted sleep. For instance, administering pain medication may help with discomfort but does not specifically cater to managing urinary needs. Checking on her every hour may increase her awareness of staff presence or lead to unnecessary awakenings. Offering snacks before sleep might not contribute positively, as digestion can sometimes disrupt sleep. Thus, the PureWick catheter stands out as the most suitable choice to enhance Ms. Yu's sleep quality.