Patients strangling nurses

So I recently saw I video pop up on my feed on Instagram. It’s the page called killer_bee_tactical. I absolutely love his videos. He recently posted about how to defend yourself when a patient attempts to strangle you with your stethoscope. Is this a common thing?? This was the first time I’ve ever heard about it and the comments were very alarming to say the least.

(I am not a nurse, I am applying to a program next year though)