Chapter 26: Local Anesthetics

Chapter 26: Local Anesthetics

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

1. A nurse is preparing a patient for suturing and provides patient teaching regarding the use of the local anesthetic. The nurse asks the graduate nurse assisting her questions about the anesthesia to evaluate the graduate nurse’s understanding. Which statement best demonstrates the graduate nurse’s accurate understanding of the effects of local anesthesia?

ANS:   D

Local anesthetics block conduction in motor nerves as well as sensory nerves.

Perception of heat and cold may be affected by local anesthetics.

Local anesthetics block the sensation of deep pressure but not as an initial response.

Small, nonmyelinated neurons are blocked more rapidly than large, myelinated neurons.

DIF:    Cognitive Level: Analysis                  REF:    p. 245

TOP:    Nursing Process: Evaluation

MSC:   NCLEX Client Needs Category: Physiological Integrity: Pharmacological and Parenteral Therapies

2. A nurse is teaching a pharmacology class to a group of nurses. To evaluate the group’s understanding of local anesthetics, the nurse asks, “Which electrolyte channels inhibit axonal conduction as a result of the administration of a local anesthetic?” The best response of a participant would be _____ channels.

ANS:   C

Administration of a local anesthetic stops axonal conduction by blocking sodium channels.

Administration of a local anesthetic does not stop axonal conduction by blocking potassium, calcium, or chloride channels.

DIF:    Cognitive Level: Analysis                  REF:    p. 245

TOP:    Nursing Process: Evaluation

MSC:   NCLEX Client Needs Category: Physiological Integrity: Pharmacological and Parenteral Therapies

3. A physician is preparing to suture a patient who has a superficial stab wound in the leg. The physician asks the nurse for lidocaine with epinephrine. The nurse understands that concurrent administration of lidocaine with epinephrine results in the epinephrine having which effect on the lidocaine?

ANS:   A

Epinephrine causes vasoconstriction and reduces local blood flow. It delays systemic absorption of the anesthetic, which results in prolonged anesthesia and a reduced risk of toxicity.

Epinephrine does not delay absorption of lidocaine.

Epinephrine does not increase blood flow.

Epinephrine causes an adrenergic effect, not an antiadrenergic effect.

DIF:    Cognitive Level: Application             REF:    p. 246

TOP:    Nursing Process: Diagnosis

MSC:   NCLEX Client Needs Category: Physiological Integrity: Pharmacological and Parenteral Therapies