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Brachial Plexus Injuries - OT - 3 Hour

You will need to answer 11 questions correctly to pass the test.
(1) The brachial plexus is formed by the union of the ______ nerve roots. (p. 3)
(A) Dorsal rami of C5, C6, C7, & C8
(B) Ventral rami of C5, C6, C7, C8, T1
(C) Lateral rami of C5, C6, & C7
(D) Posterior rami of C4, C5, C6, C7, & T1
(2) Fascicles are collections of axons which are surrounded by endoneurium. (p. 4)
(A) True
(B) False
(3) Most brachial plexus lesions are caused by ________. (p. 5)
(A) Trauma to the neck and shoulder
(B) Pseudoaneurysm of the subclavian artery
(C) Radiation therapy
(D) Neoplastic cancers
(4) Approximately 70% of traumatic brachial plexus injuries are secondary to motor vehicle accidents. (p. 8)
(A) True
(B) False
(5) An injured nerve with disruption of the axon, endoneurium, and perineurium, an intact epineurium, and no regeneration is classified as ________. (p. 12)
(A) Seddon neurapraxia
(B) Sunderland II
(C) Sunderland IV
(D) Seddon neurotmesis
(6) Wallerian degeneration begins within hours of injury. (p. 13)
(A) True
(B) False
(7) The success of regeneration from the proximal stump depends to a large degree on the distance from the injury site. (p. 14)
(A) True
(B) False
(8) A patient presents with weak thumb, finger, wrist, and elbow extensors, and decreased triceps reflex. Where is the most likely location of the lesion? (p. 17)
(A) Upper trunk
(B) Middle trunk
(C) Posterior cord
(D) Lateral cord
(9) Which of the following would be the best choice for assessing a possible nerve root avulsion injury? (p. 22)
(A) Electromyography
(B) Nerve conduction velocity
(C) Computed tomography myelography
(D) Sonography
(10) Which surgical procedure typically has the best functional recovery? (p. 24-25)
(A) End-to-end repair
(B) Nerve grafting
(C) Nerve transfer
(D) Neurolytic transposition
(11) Neurogenic thoracic outlet syndrome is most often caused by impingement of the neurovascular bundle in the __________. (p. 29)
(A) Acromioclavicular joint
(B) Intervertebral foramen
(C) Inferior costoclavicular notch
(D) Scalene triangle
(12) Which test for TOS has the patient seated and actively performing shoulder abd to 90 degrees, wrist extension, and lateral head tilt? (p. 30-31)
(A) Elvey's test
(B) Upper limb tension test
(C) Roos test
(D) Adson test
(13) Most often, a flexed posture is seen in patients with TOS. (p. 32)
(A) True
(B) False
(14) A child with Erb's palsy typically has difficulty performing _______. (p. 34)
(A) shoulder internal rotation and elbow extension
(B) finger flexion
(C) shoulder adduction, elbow extension, and wrist ulnar deviation
(D) shoulder abduction and external rotation, elbow flexion, and wrist extension
(15) The Leffert Classification Scale is the most commonly used system for assessing obstetrical brachial plexus injuries. (p. 34)
(A) True
(B) False
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