regional anesthesia of the shoulder Flashcards Preview

MD4001 Anatomy > regional anesthesia of the shoulder > Flashcards

Flashcards in regional anesthesia of the shoulder Deck (13)
1

where do nerves C3 and C4 arise from

cervical plexus via the supraclavicular nerves

2

what are the roots of the brachial plexus

C5 to T1

3

what 5 nerves arise from the brachial plexus

musculocutaneous
axillary
median
radial
ulnar

4

what is Hilton's law

a joint receives innervation from the same nerves as those supplying muscles around that joint

5

what is supraspinatus supplied by

suprascapular nerve

6

what is deltoid supplied by

axillar nerve

7

what is subscapularis supplied by

superior and inferior subscapular nerves

8

what is pectoralis major supplied by

lateral pectoral nerve

9

what is the cervical nerve root value of the muscles supplying the glenohumeral joint

C5/6

10

what parts of the brachial plexus would be best to block in order to anaesthetise the shoulder

C5 and C6 nerve roots or the superior trunk

11

what is an interscalene block

targets the superior roots and superior trunk of the brachial plexus as they pass between the anterior and middle scalene muscles (posterior triangle)

12

what functions would you check to ensure that an interscalene block had been effective

motor function - the patient shouldn't be able to abduct or flex the shoulder

sensation- loss of temp sensation over the dermatomes (pain and temp carried the same way)

lack of articular pain (pain on movement)

13

what structures could be damaged in an interscalene block procedure

sympathetic chain
apex of the lung
phrenic nerve