Pharmacology · single question
Primary cause of tissue necrosis following a local anesthetic injection?
Show answer and explanation
Correct answer: A. Tissue ischemia
- A. Correct. The vasoconstrictor (and high-pressure injection into attached tissue, e.g., palate) causes localized ischemia → necrosis.
- B. Allergy causes hypersensitivity reactions, not localized necrosis.
- C. Hemorrhage causes hematoma, not necrosis per se.
- D. Infection is a rare separate complication, not the primary necrosis mechanism.