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AP + Phys > APEX Airway Anatomy > Flashcards

APEX Airway Anatomy Flashcards

1
Q

Intrinsic Muscles of the larynx

A

Chubby tired leprochauns piss terrible venom- Kanye, oblique (8)
1 Cricothyroid
2 Thyroarytenoids
3 Lateral cricoarytenoids
4 Posterior cricoarytenoids
5 Traverse arytenoids
6 Vocalis
7 Aryepiglottic
8 Obliquie arytenoid

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2
Q

Extrinsic muscles of larynx

A

hyoid x 6
Digastric x 2
1st 3 depress, last 5 elevate
Omohyoid
Sternohyoid
Sternothyroid
Mylohyoid
Stylohyoid
Thyrohyoid
Anterior belly digastric
Posterior belly digastric

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3
Q

Posterior cricoarytenoids

A

Post- ab
Do abs last (post)
Abduct vocal cords
The ONLY TO ABDUCT

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4
Q

Lateral cricoarytenoids

A

Adduct vocal cords

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5
Q

Cricothyroid

A

Elongates (tense) vocal cords
Cricothyroid is long
The only thing to ELONGATE (TENSE)
The rest rest bc theyre lazy

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6
Q

Thyroarytenoids

A

They are short (inside when you see them)
Shorten(relax) vocal cords

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7
Q

SLN

A

IB- sensory above glottis (to the bottom of epiglottis)
EB- innervation to cricothyroid

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8
Q

RLN

A

Sensory below glottisMotor to all larynx muscles except (cricothyroid)

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9
Q

Vocalis

A

Shortens vocal chords
Short people are vocal

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10
Q

Thyroarytenoids

A

Adducts
Only one thing abducts- pc

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11
Q

CN5

A

Provides sensory to face and head
V1 Opthalmic- nares, ant 1/3 of septum
V2 maxillary- Turbinates, nasal septum
V3 Mandibular- anterior 2/3 of tongue

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12
Q

CN9

A

Glossopharyngeal nerve
Sensation from oropharynx to anterior epiglottis
Affferant limb of gag reflex

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13
Q

CN10

A

Vagus
SLN+RLN
SLN- IB & EB
IB sensory above cords to bottom of epiglottis
EB- Motor to circoythroid
RLN- Sensory below glottis to trachea, motor to all except cricothyroid
Efferent of gag reflex

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14
Q

RLN injury outcomes

A

Unilateral- no issue
Bilateral acute- major distress
Bilateral chronic- no issue

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15
Q

Risk factor for RLN injury (either side)

A

Overinflated ETT
Tumor
Excessive neck stretching
Neck surgery

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16
Q

Risk factor for L RLN injury

A

PDA Ligation, LA enlargment (mitral stenosis), AAA, thoracic tumor

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17
Q

Risk factor for R RLN injury

A

Rare, doesnt cause respiratory distress

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18
Q
A
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19
Q

Nerve of airway

A

5 trigeminal
9 glossopharyngeal
10 vagus

20
Q

SLN injury

A

IB no issue (sensory)
EB hoarseness (cant tense/ elongate)- not a huge deal bc no respiratory distress, not an emergency

21
Q

Landmark for SLN nerve block?

A

Greater cornu of hyoid bone

22
Q

3 airway blocks

A

Glossopharyngeal
Superior laryngeal
Recurrent laryngeal (Transtracheal)

23
Q

Risk of benzocaine spray for anesthetizing the airway?

A

Methoemoglobinemia
Treatment is methylene blue

24
Q

Glossopharyngeal block

A

Palatoglossal arch

25
RLN block
Needle thru cricothyroid membrane
26
Adult larynx in spine location
C3-C6
27
Components of larynx (bones, ligaments, cartilages)
Bone- hyoid Ligaments- thyrohyoid, cricothyroid Cartilages- epiglottis, thryroid, cricoid, arytenoids, cuneiform, corniculates
28
Narrowest part of airway in adults and kids
Glottis Cricoid ring
29
Function of larynx
Airway protection, respiration, phonation
30
Hyoid function
Main support of larynx
31
Thyroid function
Main protector of larynx
32
What manuever for laryngospasm
Larsons! Laura carson is gonna help with emergency largospasms
33
Laryngospasm signs
Rocking horse (paradoxical movement) Absent etco2 Inspiratory stridor
34
Causes of laryngospasm
Secretions/ infection in airway Airway manipulation with light anesthesia Hyperventilation- doing more
35
Laryngospasm treatment
Deepen anesthetic fio2 100 Remove stimuli Larsons maneuver CPAP 20cm Succ
36
Mullers maneuver
Inhalation against a closed glottis (opposite of valsalva) Bites ett and takes a breath
37
Valsalva
Exhalation against a closed glottis Coughing, bucking
38
Larsons maneuver
Jaw thrust while digging finger into back of jaw to cause pain
39
Laryngospasm complications
Airway obstruction Death Dysrhythmias Aspiration Pulmonary edema
39
3 places the upper airway can obstruct
Soft palate - tensor palatine muscle Tongue - genioglossus muscles Epiglottis - hyoid muscles
40
Risk of turbinates
Highly vascular
41
Where is the trachea compared to spine?
Cricoid(C6) to Carina (T4/5)
41
Palatoglossal arch block will effect ___
CN9 block oropharynx vallecula
42
IM Succ dose for laryngospasm
Adult 4mg/kg Infant 5mg/kg
43

AP + Phys (38 decks)

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