Key Terms 2011

Question 1

What is the onset time of a spinal?

Answer 1

about 5 mins vs 25-30 mins for epidural

Question 2

What PNB presents the greatest risk of LA toxicity?

Answer 2

Bier block

Question 3

What are the shortest acting LAs and give duration. (4)

Answer 3

Chloroprocaine 0.5 - 1 hr
Lidocaine 0.75 - 2 hrs
Mepivicaine 1 - 2 hrs
Prilocaine 1 - 2 hrs

Question 4

What are the longest acting LAs and give duration

Answer 4

Bupi 1.5 - 8 hrs
Ropi 1.5 - 8 hrs
Levobupi

Question 5

What is the definition of potency?

Answer 5

defines lipid solubility of LA
the aromatic ring improves lipid solubility, enhances diffusion through nerve sheaths as well as neural membrans of axons

increased lipid solubility –> increased diffusion –> increased potency

Question 6

At what vertebral level do you place epidural catheter for upper abdominal surgery?

Answer 6

T5 - T6 (key terms)

T7 - T8 (Ezekiel)

Question 7

How do you manage pruritis in pt receiving epidural bupi/hydromorphone? (3)

Answer 7

Nalbuphine 5-10 mg
Benadryl 25-50 mg
Narcan 0.04 - 0.08 mcg

Question 8

What is the vertebral level of the iliac crests?

Answer 8

L4

Question 9

What is the most prevalent pathophysiological etiology for arterial hypoxemia?

Answer 9

V/Q mismatch

Question 10

How do you manage tourniquet pain?

Answer 10

Analgesics usually ineffective
Give vasodilators to lower BP
Deflate tourniquet for 10-15 mins to allow reperfusion then reinflate

Question 11

What is the current output of nerve stimulator for PNB?

Answer 11

0.5 mA

Question 12

Identify a CXR with infiltrate.

Answer 12

test question