Chapter 65 : Laryngeal Reinnervation Flashcards Preview

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Flashcards in Chapter 65 : Laryngeal Reinnervation Deck (12)
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1
Q

Most commonly used donor nerve in laryngeal reinnervation

A

ansa cervicalis

2
Q

In 1909, He Performed neurorrhaphy of the RLN and reported the first successful vocal fold innervation

A

Horsley

3
Q

activity and anatomy of this nerve makes it an excellent candidate for reinnervation of the PCA

A

Phrenic nerve

4
Q

two most common reinnervation techniques that have been applied to the problem of laryngeal paralysis in patients are:

A

Neuromuscular pedicle and ansa cervicalis to RLN anastomosis/transfer

5
Q

The neuromuscular pedicle technique involves placement of the distal portion of the ansa cervicalis branch to what muscle

A

omohyoid muscle

6
Q

Laryngeal muscles have what type of muscle fibers

A

high-velocity, low tension

7
Q

PCA appears to be mostly made up of this kind of muscle fibers, being consistent with the peak contraction time at 40msec

A

Type 2A

8
Q

Peak contraction time of Thyroarytenoid muscle

A

14 msec

9
Q

Peak contration time of Lateral cricoarytenoid muscle

A

19 msec

10
Q

Peak contraction time of thyrohyoid and sternothyroid

A

50msec

11
Q

Laryngeal muscles appear to atrophy at different rates, however by __ weeks, all laryngeal muscles are already fibrosed

A

8 weeks

12
Q

This technique attempts to transfer a nerve with a portion of its motor units intact to a denervated muscle

A

Neuromuscular pedicle technique

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