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OR Nurse:
doi: 10.1097/01.ORN.0000405312.73795.78
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Understanding peripheral nerve blocks

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INSTRUCTIONS Understanding peripheral nerve blocks


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Understanding peripheral nerve blocks

GENERAL PURPOSE: To provide perioperative nurses with an overview of peripheral nerve blocks. LEARNING OBJECTIVES: After reading the preceding article and taking this test, you should be able to: 1. Explain the history, anatomy, contraindications, and tools used for peripheral nerve blocks. 2. Identify the role of the OR nurse related to peripheral nerve block procedures.

1. Increasing the gain improves an ultrasound image's

a. focus.

b. resolution.

c. brightness.

d. coloring.

2. For a single-injection block, apply transducer gel to the surface of the transducer while holding it in a(an)

a. upright position.

b. sterile container.

c. horizontal position.

d. downward position.

3. When using a peripheral nerve stimulator for a single-shot injection nerve block,

a. attach the negative lead to the needle.

b. attach the positive lead to the needle.

c. attach the negative lead to the ECG patch.

d. interrupt the current between the positive and negative leads.

4. The intensity of peripheral nerve stimulation is measured in

a. Hz.

b. electrodes.

c. ms.

d. mA.

5. Which statement is correct about stimulating catheters for continuous use?

a. They're used for intraoperative anesthesia and are removed at the end of the procedure.

b. They must be used with peripheral nerve stimulators.

c. They can't be used with ultrasound.

d. They have centimeter markings for position monitoring.

6. Nerve blocks of the brachial plexus

a. carry risk of nerve damage from sharp needles.

b. have very poor nerve blocking results.

c. don't use an ultrasound-guided technique.

d. use a sharp needle to elicit paresthesia.

7. Which isn't a contraindication for a peripheral nerve block?

a. neuropathy

b. active infection at the block site

c. chronic pain

d. coagulation disorder

8. When the brachial plexus emerges from under the clavicle, it divides into

a. 2 cords.

b. 3 cords.

c. 4 cords.

d. 5 cords.

9. The interscalene approach for peripheral nerve block shouldn't be used in a patient with

a. shoulder injury.

b. pulmonary disease.

c. diabetes.

d. forearm fracture.

10. After a peripheral nerve block, do all of the following except

a. protect the insensate limb.

b. monitor for block-specific complications.

c. position a pneumatic tourniquet over the nerve injection site.

d. ensure that the peripheral nerve catheter is connected and secured.

11. For an interscalene approach in the upper extremity, position the patient

a. prone.

b. supine.

c. in lateral decubitus position.

d. with head facing surgical side.

12. Equipment needed for a Bier block includes

a. ultrasound.

b. peripheral nerve stimulator.

c. 0.5% bupivacaine.

d. preservative-free 0.5% lidocaine.

13. During a Bier block, the pneumatic tourniquet is inflated for a minimum of

a. 5 minutes.

b. 10 minutes.

c. 15 minutes.

d. 25 minutes.

14. During a TAP block, the OR nurse may be asked to

a. identify and mark the Petit triangle.

b. make fine ultrasound setting adjustments.

c. reposition the patient in the prone position.

d. confirm correct intraperitoneal placement of the needle.

15. Using ultrasound guidance for a sciatic nerve block

a. slows onset of block.

b. enables more sensory and motor blockade.

c. increases time to perform the block.

d. decreases local anesthetic requirements.

16. Preoperatively, tell patients receiving a femoral nerve block that, until the block wears off after surgery, they should

a. ambulate only with assistance.

b. remove the knee immobilizer before ambulating.

c. expect muscle cramps with activity.

d. do knee raises every 15 minutes.

17. A saphenous nerve block is used for procedures involving the

a. thigh.

b. hip joint.

c. anterior knee.

d. medial aspect of the foot.

18. For a sciatic nerve block,

a. the pneumatic tourniquet should directly compress injection site.

b. patients should be screened for diabetes.

c. there's little risk for local anesthetic toxicity or nerve damage.

d. an epinephrine-containing solution is used.

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