Regional Flashcards
Is the brachial plexus hyper or hypo echoic?
Hypoechoic
The stellate ganglion is located where?
C7
Horner’s syndrome symptoms:
Ptosis, miosis, anhidrosis
Injection of large volumes of LA (>30ml) during interscalene block can cause _____ paralysis. This presents as?
RLN; hoarseness
What reflex is implicated in the pt who experiences a hypotensive bradycardic episode under interscalene blockade?
Bezold-Jarisch reflex
What is the most significant complication of a Supraclavicular block?
Pneumothorax
Label the nerves
Which terminal nerve is not targeted by an axillary nerve block?
Axillary nerve
What landmarks are used for an axillary block using a nerve stimulation technique?
Axillary artery
Coracobrachialis
Pec major
Biceps
Triceps
Describe the orientation of the terminal branches relative to the axillary artery
Median= anterior + medial
Ulnar= posterior + medial
Radial= posterior + lateral
Msc= anterior + lateral
What size needle should be used for trans arterial approach for axillary block?
1 1/2 inch 25g
Can you block the median nerve (AC approach) in a pt with carpal tunnel syndrome?
No it should be avoided
What order do you inflate and deflate the cuffs for a bier block?
What should tourniquet pressure be for bier block?
~250mmHg or at least 100mmHg over SBP
Max inflation time for tourniquet
2 hour
When performing an infraclavicular block with nerve stimulation, what response suggests posterior cord stimulation.
Finger extension
The posterior branch of the femoral nerve becomes what nerve?
Saphenous
The lumbar plexus arises from ____ and innervates the ___ of the leg
L1-L4; front
The sacral plexus arises from ____ and innervates the ____ of the leg
L4-S4; back
Which lower extremity nerves are sensory only?
Lateral femoral cutaneous
Saphenous
Sural