Larynx · NEET PG Preparation ENT
During a thyroidectomy, a surgeon accidentally injures the external branch of the superior laryngeal nerve on one side. Which of the following clinic…
Practice question from Larynx (NEET PG Preparation ENT), with the correct answer and a step-by-step solution.
hard · MCQ · Q-B11CC5
During a thyroidectomy, a surgeon accidentally injures the external branch of the superior laryngeal nerve on one side. Which of the following clinical features is most likely to develop in this patient?
- A.Complete aphonia with bilateral cord paralysis
- B.Inability to produce high-pitched sounds and voice fatigueCorrect answer
- C.Severe inspiratory stridor requiring immediate tracheostomy
- D.Aspiration of liquids due to anesthesia of the supraglottis
Solution
The external laryngeal nerve supplies the cricothyroid muscle, which tensors the vocal cords to produce high-pitched sounds. Injury leads to voice fatigue, inability to reach high notes, and slight ipsilateral vocal cord lowering.
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