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NURS 6901 ENT EXAM WITH QUESTIONS AND ANSWERS
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NURS 6901 ENT EXAM WITH QUESTIONS ANDANSWERS
What are the three main nerves that innervate the airway? - ANSWER 1.
Trigeminal nerve
2. Glossopharyngeal nerve
3. Vagus nerve
What are the three branches of the trigeminal nerve? - ANSWER 1. Opthalamic
(anterior ethmoidal)
2. Maxillary
3. Mandibular (linguinal branch)
What does the ophthalmic (anterior ethmoidal) branch innervate? - ANSWER This
innervates nares to the anterior 1/3 of the septum
What does the maxillary nerve innervate? - ANSWER Posterior 2/3 of the septum
and turbinates
What does the mandibular (lingual) nerve innervate? - ANSWER Anterior 2/3 of
the tongue
What does the glossopharyngeal nerve innervate? - ANSWER The oropharynx:
-posterior 2/3 of tongue
-vallecula
-anterior epiglottis
Responsible for the gag
What are the motor and sensory functions of the internal SLN branch? - ANSWER
Sensory: Hypopharynx - posterior epiglottis
Motor: NONE!
, What are the motor and sensory functions of the external SLN branch? - ANSWER
Sensory: None
Motor: Cricothyroid
What is the motor/sensory function of the RLN? - ANSWER Sensory: Vocal cords
- trachea
Motor: Almost all intrinsic muscles
What does unilateral RLN nerve damage sound like? - ANSWER Hoarseness (+/-
stridor)
What does bilateral RLN nerve damage sound like? - ANSWER Aphonia, resp
distress
What is the oculocardiac reflex? - ANSWER This occurs when there is pressure or
pulling on the globe, muscles, and conjunctive and results in severe bradycardia
Triggered by the afferent limb of the trigeminal nerve and the efferent limb of the
vagus nerve
What is the solubility of nitrous oxide? - ANSWER NO diffuses rapidly through
membranes and can enter gas-filled spaces. It is 34x more soluble than nitrogen! If
it enters a closed-air space, it will cause increased pressure
What are the symptoms of postoperative hypocalcemia from a parathyroidectomy?
- ANSWER Hypocalcemia is defined as Ca levels <6.0 within 48 hrs of surgery
1. Paresthesia of mouth/extremities
2. Muscle spasm
3. Seizures/tetany
4. Chvostek's sign (cheek twitching)
5. Trosseau's sign (arm spasm)
6. EKG abnormalities (prolonged QT, arrhythmia)
7. Hypotension (especially when iCa is <4.3)
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