As probably the majority of resident's in nursing homes have some form of dementia, it is always a good idea to check their mouths for cheeking or pocketing before leaving them, especially when they're in bed. Having too often found pts hoarding, cheeking or pocketing meds after administration, especially at night, I make it my policy that unless they have no history of dementia, their pills are crushed, I provide a full cup of H2o and make sure med is swallowed completely before leaving the bedside. If a pt is too sleepy and can not be awakened, I return later or waste the med. Charting in MAR why med was not given and that med was wasted. Also have a 2nd nurse (if possible) sign with me if any med was narcotic/opiate. If no 2nd nurse, place med in safe place (locked in cart) and wait for on-coming shift to destroy. If it becomes a pattern of behavior that resident is not taking meds or hiding them, I place a note in the MD review book for him to go over on his rounds. I also discuss with other nurses on my unit if perhaps changing times of administration would solve the issue. Many elderly pts w/ dementia have some degree of paranoia, usually related to some unknown fear. They may tell you or others they think you are poisoning them. Or, they believe they are being held there against their will and the meds are keeping them from leaving. Whatever their particular fear, to the patient it is real. As a night nurse, I realize my pts don't necessarily recognize me on sight. In their confusion they might believe I'm trying to harm them. So, if possible I try to work with other shifts to solve the issue of hiding meds first.
You might want to discuss some alternatives with management to avoid this happening in the future. And, I think having a discussion with CNAs on the importance of reporting these types of issues directly and immediately is also important. However, although you may feel you were somehow wronged in this situation, it is your responsibility (6 rights of medication) to complete the process. I'm not saying I'm perfect, I too make mistakes, but own up to it and do what you can to solve the probelm.