A patient with suicidal impulses is on the highest level of suicide precautions. Which measures should the nurse incorporate into the patient's plan of care? (Select all that apply.)

A. Check the patient's whereabouts every 15 minutes and make frequent verbal contact: This is appropriate for standard or moderate suicide precautions, not the highest level. The highest level requires continuous onetoone observation rather than 15minute checks. B. Remove all potentially harmful objects from the patient's possession: This is essential at the highest level of suicide precautions. Items such as belts, shoelaces, sharp objects, and cords must be removed to reduce the risk of selfharm. C. Allow no glass or metal on meal trays: This is necessary to prevent access to breakable or sharp items that could be used for selfinjury. Special suicidesafe meal trays are required. D. Maintain arm's length one-on-one nursing observation around the clock: This is a hallmark of the highest level of suicide precautions. Continuous, close observation ensures immediate intervention if the patient attempts selfharm.