What is the most common cause of failure of a PSA nerve block?
A) Deposition of solution too far away from the PSA foramina
B) Incorrect needle length and gauge
C) Inadequate volume of solution
D) Intravascular injection

Question

Quizplus · Accepted Answer

The most common cause of failure of a PSA (Posterior Superior Alveolar) nerve block is the deposition of the anesthetic solution too far away from the PSA foramina, which prevents the anesthetic from effectively reaching the nerve.

What Is the Most Common Cause of Failure of a PSA