Packing no doubt blocking sound like an ear plug. I could hear better immediately as I recall, don't remember if before or after packing. Then I was left with just nerve loss of hearing. Good luck!
"Stapedectomy or Stapedotomy? What's the Difference? Compared to a stapedectomy, a stapedotomy includes the use of a laser to make a precise hole (fenestration) in the stapes footplate. While a stapedectomy typically removes the entire stapes footplate and has it replaced with a micro prosthesis."