Regional Anesthesia & Pain Management Flashcards
6 cards from real MAC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Regional Anesthesia & Pain Management flashcards as text
Which nerve block provides the broadest analgesia for hip replacement surgery?
Answer: Fascia iliaca compartment block
The fascia iliaca compartment block covers the femoral, lateral femoral cutaneous, and often obturator nerves, providing effective multi-nerve hip analgesia.
What is the maximum safe dose of plain bupivacaine for peripheral nerve block in an adult?
Answer: 2.5 mg/kg
The maximum safe dose of plain bupivacaine is 2.5 mg/kg due to its high cardiotoxicity risk compared to other local anesthetics.
What is the first-line treatment for local anesthetic systemic toxicity (LAST)?
Answer: Intralipid 20% emulsion IV
Intravenous lipid emulsion (Intralipid 20%) is the specific antidote for LAST by acting as a lipid sink to sequester the local anesthetic.
Which structure provides the loss of resistance during epidural needle placement?
Answer: Ligamentum flavum
Loss of resistance occurs as the needle passes through the dense ligamentum flavum into the epidural space.
A spinal block that ascends to T4 may block which critical physiologic response?
Answer: Cardiac accelerator fibers
Cardiac accelerator fibers originate from T1-T4; a spinal block to this level can cause significant bradycardia and hypotension.
What is the primary advantage of ultrasound guidance for peripheral nerve blocks?
Answer: Reduced local anesthetic volume and improved block accuracy
Ultrasound guidance allows real-time visualization of needle and nerve, reducing required local anesthetic volume and improving block success rates.