Regional Anesthesia

Question 1

What is the spinal length in adults?

Answer 1

Foramne magnum to sacral hiatus L1-L2

Question 2

What is the spinal length in pediatrics?

Answer 2

L3-L4

Question 3

What connects the laminae of the vertebrae?

Answer 3

Ligamentum flavum

Question 4

What connect the posterior spinous process?

Answer 4

Interspinous ligament

Question 5

What is the blood supply to the spinal cord?

Answer 5

Anterior spinal artery (anterior two thirds of cord)
Posterior spinal arteries (posterior 1/3 cord)
Additional supplies come from the intercostal arteris and lumbar arteries.

Question 6

What is the principal site of action for neuraxial blockade?

Answer 6

Nerve roots

Question 7

Where does the local anesthetic work for pain for intratecal or epidural narcotics?

Answer 7

Pain impulses interrupted at the level of the dorsal horn of the spinal cord

Question 8

Sympathetic outflow comes from the ________.

Answer 8

Thoracolumbar

Question 9

Parasympathetic outflow comes from the _________.

Answer 9

Craniosacral

Question 10

What do you give for hypotension complication due to SAB/Epidural?

Answer 10

Neosynephrine

Ephedrine

Question 11

Blockade about T4 interrupts cardiac sympathetic fibers causing ________ compromise.

Answer 11

respiratory

Question 12

From least to greatest toxicity what S/S would you see?

Answer 12

Light headedness
Circumoral numbness
facial tingling
tinnitus
slurred speech
seizures
unconsciousness
respiratory arrest
cardiovascular depression
circulatory arrest

Question 13

What is the order of blockade?

Answer 13

Autonomic (SNS)
Sensory
Motor
Proprioception

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