The oldest working nurse?

I knew one who was 82 working nights in LTC.
When I started a few yrs ago, we had a nurse who was about 70 working nights on the medical floor. She used a cane to ambulate at times & finally had to retire d/t health issues.

I knew two nurses on the floors who were in their early 70s. One took retirement right before I left; the other was still working. She was a lifelong smoker too. Some people just seem to keep going.