CHAPTER 28 | Airway Management Flashcards
Which is the nerve supply to the all the intrinsic muscles of the larynx?
A. Inferior laryngeal n.
B. Glossopharyngeal n.
C. Superior laryngeal n.
D. recurrent laryngeal n.
D. recurrent laryngeal n.
The recurrent laryngeal nerves supply all the intrinsic muscles of the larynx (with the exception of the cricothyroid muscle).
Which of the following is NOT innervated by the recurrent laryngeal nerve?
A. Thyrohyoid m.
B. Cricothyroid m.
C. Posterior cricoarytenoid m.
B. Cricothyroid m.
This muscle is the tensor of the vocal cord:
A. Thyrohyoid m.
B. Cricothyroid m.
C. Aryepiglotticus m.
D. Thyroepiglotticus m.
B. Cricothyroid m.
Coughing that occurs during awake intubation can be prevented by local anesthetic blockade at which nerve:
A. Glossopharyngeal n.
B. Hypoglossal n.
C. Recurrent Laryngeal n. & superior laryngeal n.
D. Vagus n.
C. Recurrent Laryngeal n. & superior laryngeal n.
Suppression of the ‘gag’ reflex during awake intubation can be done with blockade of which nerve?
A. Glossopharyngeal n.
B. Hypoglossal n.
C. Recurrent Laryngeal n.
D. superior laryngeal n.
E. Vagus n.
A. Glossopharyngeal n.
All of the following are intrinsic muscles of the larynx EXCEPT:
A. Thyrohyoid m.
B. Cricothyroid m.
C. Posterior cricoarytenoid m.
D. Mylohyoid m.
D. Mylohyoid m.
INTRINSIC MUSCLES OF THE LARYNX
Hoarseness after laryngoscopy is indicative of an injury to which nerve?
A. Unilateral recurrent laryngeal n.
B. Bilateral superior laryngeal n.
C. Unilateral superior laryngeal n.
D. Vagus n.
A. Unilateral recurrent laryngeal n.
Unopposed vocal cord ADDUCTION means an injury to which nerve?
A. Bilateral recurrent laryngeal n.
B. Bilateral superior laryngeal n.
C. Inferior laryngeal n.
A. Bilateral recurrent laryngeal n.
The adult larynx is vertically situated in:
A. C4 - C6
B. C5 - C7
C. C3 - C5
A. C4 - C6
In adult, the 1st tracheal ring is anterior to what cervical vertebrae?
A. C4
B. C5
C. C6
D. C2
C. C6
TRUE or FALSE
The upper epiglottis is innervated by CN 9 (Glossopharyngeal n.)
TRUE
Upper epiglottis - CN 9
Lower epiglottis - CN 10
Gag reflex - CN 9
Carina is opposite to which level of vertebrae?
A. T7
B. T5
C. T4
B. T5
Larynx in ADDUCTION corresponds to a:
A. closed larynx
B. open larynx
A. closed larynx
ADDUCTION = larynx is closed
ABDUCTION = larynx is open
The muscle responsible for the adduction of larynx:
A. lateral cricoarytenoid
B. posterior cricoarytenoid
C. superior cricoarytenoid
B. posterior cricoarytenoid
ADDUCTION = Closed larynx = Posterior cricoarytenoid m.
ABDUCTION = Open larynx = Lateral cricoarytenoid m.
The most common location where nasogastric tube is misplaced:
A. pyriform fossa
B. arytenoid
C. false cord
A. pyriform fossa
What nerve innervates the cricothyroid muscle?
A. External branch of SLN
B. Internal branch of RLN
C. Internal branch of SLN
A. External branch of SLN
Mouth opening is measured from which of the following among edentulous patient?
A. Interalveolar distance
B. Interincisor distance
C. Perialveolar distance
A. Interalveolar distance
Normal set of teeth = measure from Interincisor distance
Which of the following is the LEAST sensitive indicator of a DIFFICULT LARYNGOSCOPY?
A. Mouth opening
B. Mallampati
C. TM distance
D. Upper lip bite
A. Mouth opening
Mouth opening - 20%
Upper lip bite - 67% (most sensitive indicator)
Which of the following is the LEAST specific indicator of a DIFFICULT LARYNGOSCOPY?
A. TM distance
B. Sternomental distance
C. Mouth opening
D. Mallampati
D. Mallampati
Mallampati - 80%
Mouth opening - 97% (most specific)
Transtracheal block during awake intubation targets which nerve?
A. Recurrent laryngeal n.
B. Superior laryngeal n.
C. Hypoglossal n.
A. Recurrent laryngeal n.
Tactile sensation from the anterior third of the tongue is carried by fibers of the:
A. Trigeminal nerve
B. Facial nerve
C. Glossopharyngeal nerve
D. Hypoglossal nerve
A. Trigeminal nerve
The tongue has innervation for both gustatory (aka “taste”) and tactile (general sensory) input. Gustatory (taste) sensation for the anterior two-thirds of the tongue is provided by the facial nerve (CN VII), and for the posterior third of the tongue by the glossopharyngeal nerve (CN IX).
Tactile sensation for the anterior two-thirds of the
tongue is provided by the trigeminal nerve (CN V), and for the posterior one-third of the tongue by the glossopharyngeal nerve (CN IX).
Which among the following is the MOST SPECIFIC method of airway evaluation?
A. Mallampati classification
B. Thyromental distance
C. Sternomental distance
D. Mouth opening
B. Thyromental distance
Which among the following is the most
SENSITIVE method of airway evaluation?
A. Mallampati classification
B. Thyromental distance
C. Sternomental distance
D. Mouth opening
C. Sternomental distance
Any incisions or needle punctures to the
cricothyroid membrane must be made in its
______ to avoid vessel puncture.
A. Superior third
B. Middle third
C. Inferior third
C. Inferior third
The following are independent risk factors for difficult mask ventilation EXCEPT:
A. Presence of teeth
B. Presence of a beard
C. Body mass index >26 ng/m2
D. Age >55 yrs
A. Presence of teeth
Which is NOT among the criteria for difficult mask ventilation?
A. Inability for one anesthesiologist to maintain oxygen saturation >92%
B. Use of fresh gas flow button more than twice
C. Change of operator required
D. Minimal gas leak around face mask
D. Minimal gas leak around face mask
Expiratory chin drop facilitates _______
A. Positive pressure inspiration
B. Gas egress
C. Endotracheal intubation
D. LMA placement
B. Gas egress
