Lidocaine doesn't work in an acidic environment

I've heard this nonsense before and came across it again today. Had a PTA and cut the back of this throat and didn't get anything. I was frustrated and ENT kindly came in and literally aimed 1 mm caudal from my incision and took out 10 cc pus! So frustrated. So I asked ENT why didn't you numb the back of the throat? She said it doesn't work because lidocaine doesn't anesthesize in acidic environments. I mean this is nonsense! I anesthesize abscesses on external body parts all the... Lidocaine doesn't work in an acidic environment
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Emergency Medicine Source Type: forums