Upper extremity blocks Flashcards
Identify the corresponding nerve roots for the musculocutaneous nerve
C5-c7
Identify the corresponding nerve roots for the axillary nerve
C5-C6
Identify the corresponding nerve roots for the median nerve
C5-T1
Identify the corresponding nerve roots for the radial nerve
C5-T1
Identify the corresponding nerve roots for the ulnar nerve
C8-T1
Identify the corresponding cords for the musculocutaneous nerve
Lateral cord
Identify the corresponding cords for the axillary nerve
Posterior cord
Identify the corresponding cords for the radial nerve
Posterior cord
Identify the corresponding cords for the median nerve
Lateral & medial
Identify the corresponding cords for the ulnar nerve
Medial cord
The supraclavicular nerve comes off the _ nerve root
C5
The dorsal scapular nerve comes off the _ nerve root
C3-4
The intercostobrachialis nerve comes off the _ nerve root
T2
The long thoracic nerve comes off the _ nerve root
C5-7
The non terminal supraclavicular nerve branches of the brachial plexus include
Dorsal scapular nerve
Suprascapular nerve
Long thoracic nerve
The dorsal scapular nerve innervates the
Levator scapula and rhomboid muscles
The suprascapular nerve innervates the
Supraspinitus and infraspinitus muscles
The brachial plexus provides__________ innervates be to the _______
Sensory & motor; shoulder and upper extremity
The brachial plexus originates from the
Ventral rami of cervical nerve roots C5-T1
The five terminal branches of the brachial plexus
Musculocutaneous, axillary, ulnar, median, radial
“Most Athletes Must Really Unite”
The phrenic nerve receives contribution from
C5
The suprascapular nerve arises from the
Cervical plexus
A field block may be required to block the ______ for upper extremity procedures. It can also be used for an upper arm tourniquet in an awake patient.
Intercostobrachialis
The dorsal scapular nerve innervates the
Levator scapula and rhomboid muscles
The long thoracic nerve innervates the
Serratus anterior muscles
The suprascapular nerve innervates the
Supraspinous and infraspinatus muscles as well as the posterior glenohumerous joint, subacromial bursa, acromioclavicular joint
The lateral pectoral nerve innervates the
Pectoral is major muscle and the acromioclavicular joint
The medial pectoral nerve innervates the
Pectoral is minor and the lower region of the pectoral is major muscles
The phrenic nerve originates from the
Anterior rami of C3-C5
Some approaches to the brachial plexus cause
Hemidiaphragmatic paralysis
The supraclavicular nerve provides sensory innervation to the
“Cape of the shoulder”
The supraclavicular nerve is best anesthetized with a
Superficial cervical plexus block
Blocking the supraclavicular nerve should be performed for
Clavicular fracture or carotid endarterectomy
Describe how to perform an intercostobrachial nerve block.
With the arm abducted and externally rotated, begun at the deltoid prominence and move inferiorly towards the triceps. 5 mL is sufficient
A _______ describes the muscle innervated by the ventral (motor) spinal nerve roots.
Myotome
A ______ describes bones and joints innervated by the dorsal (sensory) nerve roots.
Osteotome
Describe the mnemonic for the clinical assessment of a brachial plexus block
Push’eR, Pull’eM, Pinch’eM, Pinch’U
Describe Push’eR
Elbow extension against resistance (triceps contraction)—> radial nerve
Describe Pull’eM.
Elbow flexion against resistance (biceps contraction)—>musculoutaneous nerve
Describe Pinch Me.
Pinch index finger__> median nerve
Describe Pinch U.
Pinch pinky finger —> ulnar nerve
The C4 dermatome innervates the
Superior aspect of the shoulder
The C6 dermatome innervates the
Lateral shoulder
The C7 dermatome innervates the
3rd digit
The C8 dermatome innervates the
5th digit
The T1 dermatome innervates the
Medial aspect of the arm
The T2 dermatome innervates the
Axilla
Describe the motor function of the axillary nerve.
Shoulder aBdution (deltoid contraction)
Describe the motor function of the musculocutaneous nerve.
Elbow flexion (biceps contraction), forearm supination (Palm faces upward)
Describe the motor function of the radial nerve
Elbow extension (triceps contraction)
Wrist extension
Finger extension
Thumb abduction
Describe the motor function of the median nerve.
Forearm pronation (palm faces downwards), finger flexion (first 3.5 digits), thumb opposition (brings thumb to contact a finger)
