Maverick Modules (1-4) Regional Block Basics

Question 1

What nerve type is more readily activated with a shorter duration of current?

Answer 1

Motor nerve fibers

Question 2

Peripheral nerve stimulation technique is guided by the use of stimulation to _______ nerves.

Answer 2

Motor

Question 3

_____ current is needed to elicit a motor response as the needle approaches the nerve.

Answer 3

Less

Question 4

Elicited motor response ≤ ______ mA is considered as a good endpoint for successful neural blockade according to the literature.

Answer 4

0.5 mA

0.4 mA is best.

Question 5

Order the following pre-block steps:

• Informed Consent
• Educate the Patient
• Determine block approach/technique
• Indications/Contraindications
• History & Physical
• Equipment

Answer 5

1. History & Physical
2. Indications/Contraindications
3. Determine block approach/technique
4. Informed Consent
5. Educate the Patient
6. Equipment

Question 6

What are the four major advantages to using nerve stimulation technique?

Answer 6

• Nerve stimulators are very available
• Inexpensive
• Setup time is shorter
• Landmarks are consistent for reliability

Question 7

What are some absolute contraindications to regional block techniques?

Answer 7

1. Patient refusal
2. Uncooperative patient (mental health)
3. Pre-op nerve involvement
4. Intra-op nerve repair
5. Infection at block site