The nurse is caring for a patient in the emergency department with a 2-inch laceration to the left arm caused by broken glass. The nurse suspects the local anesthetic will be administered by what method?
A) Topical Administration
B) Infiltration
C) Field block
D) Nerve block
B
Feedback:
Infiltration local anesthesia involves injecting the anesthetic directly into the tissues to be treated (e.g., sutured, drilled, cut). This injection brings the anesthetic into contact with the nerve endings in the area and prevents them from transmitting nerve impulses to the brain. Topical administration would not be absorbed deeply enough to prevent pain. Field block would be used in a larger area (e.g., the entire area required surgical repair). Nerve block would anesthetize a far larger area than is required for 2-inch laceration.
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