Nerve supply of larynx Flashcards
(22 cards)
Sensory nerve supply of supraglottis
Internal laryngeal nerve
Sensory nerve supply of glottis
Recurrent laryngeal nerve
Sensory nerve supply of subglottis
Recurrent laryngeal nerve
Motor nerve supply of all laryngeal muscles except cricothyroid
Recurrent laryngeal nerve
Motor nerve supply of cricothyroid
External laryngeal nerve
Anastomoses of internal laryngeal nerve with recurrent laryngeal nerve(sensory branches)
Galen sensory anastomosis
Most common nerve to be injured in thyroid surgeries
External laryngeal nerve
Tensor muscles of vocal cord
cricothyroid, vocalis
Injury of which nerve causes inability to increase the pitch of voice and which muscle is affected
External laryngeal nerve, cricothyroid muscle
Examination findings of vocal cords in case of External laryngeal nerve injury
bowed, skewed and floppy appearance
Which side recurrent laryngeal nerve is most commonly injured in case of thyroid surgeries
Right
Overall most common recurrent laryngeal nerve to be injured
Left
Treatment of unilateral incomplete palsy of vocal cords
Conservative treatment
Treatment of bilateral incomplete palsy of vocal cords
Immediate : Tracheostomy
Later : Lateralization of vocal cords
Treatment of unilateral complete palsy of vocal cords
Medialization
Treatment of bilateral complete vocal cord palsy
Tracheostomy + Epiglottopexy
Types of management of vocal cord palsy
Phonosurgeries
Thyroplasty
Types of thyroplasty
medialization, lateralization, shortening/relaxing, lengthening
Indication for type 1 thyroplasty
unilateral complete/adductor palsy
Indication for type 2 thyroplasty
bilateral incomplete/abductor palsy
Indication for type 3 thyroplasty
puberphonia, gender transformation
Indication for type 4 thyroplasty
androphonia, gender transformation, SLN palsy
