46. Peripheral nerve blocks Flashcards

1
Q

Cervical plexus block. Height and examples

A

C1-C4
Lymph node dissection, endarterectomy, plastic surgery

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2
Q

Brachial plexus anatomy

A
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3
Q

Interscalene block

A

For shoulder surgery
Blocks sup / middle trunk C6 level
Close to phrenic nerve can cause respiratory issues (due to diaphragm), Bezold Jarish reflex (decrease HR and BP)

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4
Q

Supraclavicular block

A

For elbow, forearm, hand
Blocks distal trunk
Risk of pneumothorax, phrenic nerve block, Horness syndrome, neuropathy

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5
Q

Suprascapular block

A

Sup trunk + C5, C6 +- C4
For shoulder.
Less risk for phrenic nerve block

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6
Q

Infraclavicular block

A

Block brachial plexus
Deep and slow onset

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7
Q

Risk for intercostal block

A

Risk for pneumothorax
Risk for LAST

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8
Q

TAP block nerves

A

Blocks subcostal, ilioinguinal, Iliogastric nerves

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9
Q

Lumbar plexus

A

In psoas compartment (between psoas and quadratum lumborum)
Contains obturator, femoral and lateral femoral cutaneous

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10
Q

Sacral plexus

A

Perineal cutaneous nerve + sciatic nerve

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11
Q

Sciatic nerve

A

Tibial nerve (med) + common peroneal (lat)

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12
Q

Ankle innervation

A

5 nerves. 4 from sciatic nerve: Tibial, sural, sup peroneal, deep peroneal
5th Saphenous

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13
Q

At what current motor blocks occur

A

< 0.5 mA

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14
Q

Speed of US in soft tissue

A

1540 m/s

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15
Q

sacral plexus?

A

Sup inf gluteal
Sciatic nerve (tibial common peroneal)
Post femoral

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16
Q

Technique to reducing the risk of nerve injury

A

No technique is better

16
Q

Anesthetic for Bier block and which one not and why

A

chloroprocaine 0.5%, lidocaine 0.5%, or prilocaine 0.5%
No Bupi due to severe LAST

17
Q

Medial malleolus innervation
Lateral

A

Medial tibial
Lateral Sural

18
Q

Lumbar plexus

A
19
Q

Last incidence

A

1 / 1000