Anesthesia · single question
Which nerve block carries the greatest risk of hematoma?
Show answer and explanation
Correct answer: D. Posterior superior alveolar
- A. The ASA (infraorbital) block has comparatively low hematoma risk.
- B. Greater palatine injections rarely cause significant hematoma.
- C. IAN blocks can cause hematoma but less commonly than the PSA.
- D. Correct. The PSA block risks puncturing the pterygoid venous plexus, the most common cause of a visible facial hematoma.