Regional/Local

Question 1

What is added to local anesthetics to help prolong their effects?

Answer 1

Steroids (Decadron)

Question 2

When will nerve stimulator not work?

Answer 2

Sensory nerves
(No motor innervation = no twitch seen)

Question 3

What 2 drugs act via NMDA receptor blockage?

What are unique about these receptors vs opioid receptors?

Answer 3

Ketamine
Methadone (delta opioid receptors also)

NO tolerance to these receptors

Question 4

Landmarks for Lateral Femoral Cutaneous nerve block?

Answer 4

Between:

1) iliac crest
2) sartorius muscle
3) inguinal ligament

Question 5

What nerve innervates the skin of the posterior thigh?

Answer 5

Posterior Cutaneous branch of lumbar plexus

Question 6

How is tourniquet pain affected by local anesthesia vs general anesthesia?

Answer 6

GA: will not feel tourniquet pain
LA: if sole modality for anesthesia, patient WILL feel tourniquet pain after 90 minutes (?)

Question 7

Where does saphenous nerve innervate?

Location for ultrasound-guided block?

Answer 7

Sensation to medial aspect of leg down to ankle and foot

In tissue plane between sartorius and vastus medialis
Sartorius forms a “roof” over the adductor canal where the nerve runs

Question 8

Max doses for lidocaine alone and with epinephrine?

Answer 8

Only lidocaine = 5 mg/kg

Lido + Epi = 7 mg/kg