EDAIC Regional Anesthesia and Pain Management 2

Question 1

Which nerve is most commonly injured during interscalene brachial plexus block?

Accepted Answer

Phrenic nerve

Answer

The phrenic nerve (C3-C5) runs adjacent to the brachial plexus at the interscalene level and is blocked in nearly 100% of cases, causing ipsilateral hemidiaphragm paresis.

Question 2

The transversus abdominis plane (TAP) block primarily targets which fascial plane?

Accepted Answer

Between internal oblique and transversus abdominis

Answer

The TAP block deposits local anesthetic between the internal oblique and transversus abdominis muscles, where the thoracolumbar nerves (T6-L1) travel.

Question 3

Which local anesthetic has the longest duration of action for peripheral nerve blocks?

Accepted Answer

Bupivacaine

Answer

Bupivacaine provides the longest duration (up to 12-18 hours for nerve blocks), though ropivacaine has a similar but slightly shorter duration with a better safety profile.

Question 4

A patient develops sudden hypertension, bradycardia, and loss of consciousness during spinal anesthesia. What is the most likely cause?

Accepted Answer

Total spinal anesthesia

Answer

Total spinal anesthesia from cephalad spread of intrathecal local anesthetic causes cardiovascular and respiratory depression, including bradycardia from blocking cardiac accelerator fibers and hypotension.

Question 5

What is the maximum recommended dose of lidocaine with epinephrine for peripheral nerve block in adults?

Accepted Answer

7 mg/kg

Answer

With epinephrine (1:200,000), the maximum safe dose of lidocaine is 7 mg/kg due to the vasoconstrictive effect slowing systemic absorption.

EDAIC - European Diploma in Anesthesiology and Intensive Care Practice Test

EDAIC - European Diploma in Anesthesiology and Intensive Care Practice Test

EDAIC Regional Anesthesia and Pain Management 2