Facial Nerve

Question 1

Facial Nerve is mixed/motor /sensory?

Answer 1

Mixed but mainly motor

Question 2

Sensory part of facial nerve is aka

Answer 2

Nerve of wrisberg/Nerve of intermedius

Question 3

Bony canal that covers facial nerve

Answer 3

Fallopian canal

Question 4

Where is Fallopian canal shortest and narrowest?

Answer 4

Labyrinthine segment

Question 5

Most common Site where viral infection lead to compression and ischemia of facial nerve

Answer 5

Labyrinthine segment

Question 6

Landmarks for facial nerve on medial wall of middle ear

Answer 6

Processus cochleriformis
Oval window
Lateral SCC

Question 7

Most common site of dehiscence of fallopian canal

Answer 7

Horizontal segment

Question 8

Vertical segment is located on which wall

Answer 8

Posterior wall of middle ear

Question 9

Landmarks to define vertical segment of facial nerve location

Answer 9

Pyramid
Fossa incudis
Chorda tympani
Aditus

Question 10

1st branch of facial nerve is given off from

Answer 10

1st genu -GSPN

Question 11

Second branch is given at

Answer 11

At the pyramid -nerve to stapedius

Question 12

Branch given just above stylomastoid foramen

Answer 12

Chorda tympani

Question 13

What happens if 1st branch of facial nerve is damaged

Answer 13

Dry eye

Schirmers test

Question 14

What happens if second branch is injured

Answer 14

Loss of stapedial reflex

Hyperacusis

Question 15

Function of chorda tympani

Answer 15

Taste and salivation

Question 16

What are the topodiagnostic test done to know the site of lesions of facial nerve

Answer 16

Schirmers
Stapedial
Taste
Salivation

Question 17

Electrodiagnostic test will assess prognosis

What are the test done

Answer 17

ENG

EMG - fibrillation potential and action potential

Question 18

why should we wait 3 days before performing ENG

Answer 18

Wallerian Degeneration

Question 19

MC idiopathic facial nerve palsy

Answer 19

Bells palsy

Question 20

Viral cause of Bell’s palsy

Answer 20

HSV1

Question 21

Most common site for bells palsy

Answer 21

Labyrinthine segment

Question 22

Symptoms of pt with bells palsy

Answer 22

Dry eye
Hyperacusis
Lack of taste and salivation in ant 2/3
Lmn palsy of one side of face

Question 23

How to manage pt of bells palsy
Dose of steroid
And antiviral can be useful upto __ days

Answer 23

No hospitalization
1 mg/ kg steroid
3 days antiviral 
Physiotherapy nerve stimulation
Eye care lubrication and padding

Question 24

Idiopathic facial nerve palsy
Swelling of lips
Fissures of tongue

Answer 24

Melkerson Rosenthal syndrome

Question 25

Infection of EAC leading to facial nerve palsy

Answer 25

Malignant otitis externa Csom Aom Ramsay hunt syndrome due to herpes zoster

Question 26

Mcc traumatic cause of facial nerve palsy

Answer 26

Surgical | Parotid > Mastoid

Question 27

Which fracture of temporal bone is most common cause of f n palsy

Answer 27

Transverse fracture

Question 28

Best investigation for trauma to temporal bone

Answer 28

Hrct

Question 29

Important sign seen in temporal bone fracture

Answer 29

Battle sign

Question 30

After surgery of parotid gland sudden onset facial palsy occurs. How to manage?

Answer 30

Immediate exploration

Question 31

After surgery of parotid gland late onset facial palsy occurs. How to manage?

Answer 31

Steroids

Question 32

Graft for facial nerve a ) most common b) Long graft

Answer 32

a greater auricular C2C3 | b) sural

Question 33

Aberrant regeneration can cause?

Answer 33

Synkinesis | Crocodile tears

Question 34

What are crocodile tears | Where is the site of injury

Answer 34

Tearing with salivation | Before the origin of gspn i e labyrinthine segment or cp angle

Question 35

What is frey syndrome

Answer 35

Gustatory sweating

Question 36

Cause of frey syndrome

Answer 36

Injury to auriculotemporal nerve in parotid surgery Aberrant regeneration Nerve fibers Supplies sweat gland overlying parotid

Question 37

Management of freys

Answer 37

Botox Surgical - implantation below skin Tympanic neurectomy

Question 38

Incision for parotid surgery

Answer 38

Lazy S incision aka modified blaires incision