Gender-Affirming Voice Care — MCQs
To distinguish between cochlear and post-cochlear damage, which test is done?
At what intensity does the sound of a normal voice reach the ear from a distance of 1 meter?
During thyroidectomy, damage to which nerve leads to loss of high-pitched voice?
Which of the following is true regarding Singer's nodule?
Dysphonia plica ventricularis is produced from:
Hyponasal voice is seen in all except?
The voice is not affected in which of the following conditions?
A patient complains of sharp shooting pain in the pharynx and tonsil. On examination, a trigger zone is found in the tonsillar area. What is the diagnosis?
A young man whose voice has not been broken is called:
Type I thyroplasty is indicated for which of the following vocal cord conditions?
Gender-Affirming Voice Care Indian Medical PG Practice Questions and MCQs
Question 1: To distinguish between cochlear and post-cochlear damage, which test is done?
- A. Auditory brainstem response (ABR) (Correct Answer)
- B. Impedance audiometry
- C. Pure tone audiometry
- D. Electrocochleography (ECochG)
Explanation: ***Auditory brainstem response (ABR)*** - This test evaluates the integrity of the **auditory pathway from the cochlea through the brainstem**, making it excellent for differentiating between cochlear (sensory) and post-cochlear (retrocochlear/neural) lesions. - Abnormalities in wave latencies or interpeak intervals suggest **retrocochlear pathology** (e.g., acoustic neuroma), while normal ABR responses despite hearing loss point towards cochlear damage. - ABR records **five characteristic waves (I-V)** representing neural transmission from the auditory nerve through the brainstem. *Impedance audiometry* - Primarily assesses the **middle ear function**, including the eardrum and ossicles, by measuring **tympanic membrane compliance** and **acoustic reflexes**. - It does not directly evaluate the function of the **cochlea or the retrocochlear pathways**, making it unsuitable for this differentiation. *Pure tone audiometry* - Measures a person's **hearing sensitivity** at different frequencies and provides information on the **degree and type of hearing loss (conductive, sensorineural, or mixed)**. - While it identifies sensorineural hearing loss, it cannot pinpoint whether the damage is **cochlear or retrocochlear** within the sensorineural category. *Electrocochleography (ECochG)* - Records **electrical potentials generated by the cochlea and auditory nerve** in response to sound, including **cochlear microphonics, summating potentials, and compound action potentials**. - While it evaluates cochlear function and is useful in diagnosing **Meniere's disease** and **auditory neuropathy**, it does not adequately assess the **integrity of the brainstem auditory pathways** needed to differentiate retrocochlear lesions.
Question 2: At what intensity does the sound of a normal voice reach the ear from a distance of 1 meter?
- A. 60 dB (Correct Answer)
- B. 80 dB
- C. 20 dB
- D. 40 dB
Explanation: **60 dB** - A **normal conversational voice** at a distance of about 1 meter typically has an intensity around **60 decibels (dB)**. - This level is considered moderate and easily audible without discomfort in a quiet environment. *80 dB* - An intensity of **80 dB** is significantly louder, comparable to a **garbage disposal** or a **loud alarm clock**. - While audible, it would generally be perceived as quite loud for a normal conversational voice. *20 dB* - An intensity of **20 dB** is very quiet, equivalent to a **whisper** or the **rustling of leaves**. - It would be too low for a normal conversational voice to be heard clearly at 1 meter. *40 dB* - An intensity of **40 dB** is softer than typical conversation, similar to the sound of a **quiet office** or **refrigerator hum**. - While audible, it would likely be considered a **soft voice** rather than a normal conversational level.
Question 3: During thyroidectomy, damage to which nerve leads to loss of high-pitched voice?
- A. External branch of the superior laryngeal nerve (Correct Answer)
- B. Hypoglossal nerve
- C. Vagus nerve
- D. Recurrent laryngeal nerve
Explanation: ***External branch of the superior laryngeal nerve*** - The **external branch of the superior laryngeal nerve** innervates the **cricothyroid muscle**, which is responsible for tensing the vocal cords. - Damage to this nerve paralyzes the cricothyroid muscle, leading to an inability to tense the vocal cords, resulting in a **monotonous voice** and **loss of high-pitched tones**. *Hypoglossal nerve* - The **hypoglossal nerve (CN XII)** controls the muscles of the **tongue**, affecting articulation and swallowing, but not vocal pitch directly. - Damage primarily causes **tongue deviation** and **difficulty with speech (dysarthria)** and swallowing. *Vagus nerve* - The **vagus nerve (CN X)** gives rise to both the **superior laryngeal nerve** and the **recurrent laryngeal nerve**. - While damage to the vagus nerve trunk would affect vocalization, the question specifically asks about loss of high-pitched voice, which points to a more localized injury to one of its branches. *Recurrent laryngeal nerve* - The **recurrent laryngeal nerve** innervates most of the intrinsic laryngeal muscles, including the **thyroarytenoid** and **posterior cricoarytenoid muscles**, primarily affecting vocal cord adduction and abduction. - Damage typically causes **hoarseness** due to vocal cord paralysis, and in severe cases, difficulty breathing, but it does not specifically lead to the *loss of high-pitched voice* as directly as superior laryngeal nerve damage.
Question 4: Which of the following is true regarding Singer's nodule?
- A. Laser therapy is treatment of choice
- B. It occurs at junction of anterior 1/3rd and posterior 2/3rd (Correct Answer)
- C. Requires excision as its potentially malignant
- D. Most common symptom is pain
Explanation: ***Correct: It occurs at junction of anterior 1/3rd and posterior 2/3rd*** **Singer's nodules**, also known as **vocal cord nodules**, are typically found at the junction of the **anterior one-third and posterior two-thirds** of the true vocal cords. This area experiences the most vibratory stress and contact during phonation, making it prone to trauma from vocal abuse, leading to the formation of bilateral benign lesions. *Incorrect: Laser therapy is treatment of choice* **Voice therapy** is the **first-line treatment** for Singer's nodules, aiming to modify vocal behaviors and reduce vocal strain. **Surgery**, including laser therapy or microlaryngeal excision, is reserved for cases that do not respond to conservative voice therapy and when nodules significantly impair vocal function. *Incorrect: Requires excision as its potentially malignant* Singer's nodules are **benign lesions** with no malignant potential. They are not considered premalignant and do not undergo malignant transformation. Surgical excision is considered only if voice therapy fails after adequate trial and the nodules continue to cause significant dysphonia. *Incorrect: Most common symptom is pain* The most common symptom associated with Singer's nodules is **hoarseness** or **dysphonia** (altered voice quality). The voice may sound breathy, rough, or strained. **Pain is generally not a prominent symptom** of vocal cord nodules, which helps differentiate them from other laryngeal pathologies like laryngitis or vocal cord polyps with inflammation.
Question 5: Dysphonia plica ventricularis is produced from:
- A. Vocal cord
- B. Ventricular fold (Correct Answer)
- C. Arytenoid
- D. Epiglottis
Explanation: ***Ventricular fold*** - **Dysphonia plica ventricularis**, also known as **ventricular dysphonia** or **false vocal cord dysphonia**, occurs when the **ventricular folds** (false vocal cords) vibrate inappropriately during phonation. - This condition often results in a **hoarse**, rough, or strained voice quality, as the false vocal cords are not designed for regular vibratory function in voice production. *Vocal cord* - The **true vocal cords** are the primary structures responsible for producing sound through precise vibration and approximation during phonation. - Dysphonia originating from the **true vocal cords** would typically be described by terms like vocal fold paralysis, nodules, or polyps, not "plica ventricularis." *Arytenoid* - The **arytenoid cartilages** are crucial in vocal cord movement and tension through their articulation with the cricoid cartilage. - While they influence voice production, they do not directly vibrate to produce sound themselves; rather, they position the vocal cords. *Epiglottis* - The **epiglottis** is a leaf-shaped cartilage that primarily functions to prevent food and liquid from entering the trachea during swallowing. - It plays no direct role in voice generation through vibration; its involvement in phonation is generally limited to resonance or protection.
Question 6: Hyponasal voice is seen in all except?
- A. Adenoids
- B. Nasal polyp
- C. Deviated nasal septum
- D. Cleft lip (Correct Answer)
Explanation: ***Cleft lip*** - A **cleft lip** primarily affects the appearance of the lip and a portion of the nose but doesn't typically obstruct the nasal passages to cause a hyponasal voice. - The voice quality in individuals with a cleft lip, without an associated cleft palate, is usually normal. *Adenoids* - **Enlarged adenoids** can obstruct the nasopharyngeal airway, leading to reduced nasal resonance and a **hyponasal (rhinolalia clausa)** voice. - This obstruction prevents air from exiting through the nose during speech, making sounds like 'm' and 'n' sound like 'b' and 'd'. *Nasal polyp* - **Nasal polyps** can physically block the nasal passages, impairing airflow through the nose during speech. - This blockage leads to a reduction in nasal resonance, resulting in a **hyponasal voice**. *Deviated nasal septum* - A **deviated nasal septum** can significantly narrow one or both nasal passages, restricting airflow. - This structural obstruction can cause a **hyponasal voice** due to reduced nasal resonance.
Question 7: The voice is not affected in which of the following conditions?
- A. Unilateral abductor palsy (Correct Answer)
- B. Unilateral adductor palsy
- C. Partial abductor palsy
- D. Total adductor palsy
Explanation: In phoniatrics, the quality of voice depends on the ability of the vocal cords to meet in the midline (**adduction**) for vibration. ### **Explanation of the Correct Answer** **A. Unilateral abductor palsy:** In this condition, the affected vocal cord is paralyzed in the **median (midline) position** because it cannot move outward (abduct). Since the paralyzed cord is already at the midline, the healthy cord can easily meet it during phonation. As a result, the glottic gap is closed perfectly, and the **voice remains normal**. This condition is often asymptomatic and may only present with mild exertional dyspnea (stridor). ### **Why the Other Options are Incorrect** * **B. Unilateral adductor palsy:** The affected cord remains in the **paramedian or lateral position** and cannot move to the midline. This creates a large glottic gap during speech, leading to a **breathy, weak voice (hoarseness)**. * **C. Partial abductor palsy:** According to **Semon’s Law**, in progressive lesions of the recurrent laryngeal nerve, abductor fibers are injured first. This results in the cord being stuck in a position that interferes with the symmetry of vibration, leading to varying degrees of **hoarseness**. * **D. Total adductor palsy:** This involves a complete failure of the cords to approximate, leading to significant **aphonia** (loss of voice) or severe breathiness. ### **Clinical Pearls for NEET-PG** * **Semon’s Law:** In progressive recurrent laryngeal nerve (RLN) injury, abductors (Posterior Cricoarytenoid) are paralyzed before adductors. * **Wagner and Grossman Hypothesis:** If the Superior Laryngeal Nerve (SLN) is intact, the cricothyroid muscle keeps the paralyzed cord in the **paramedian** position. * **Position of Cords:** * Unilateral RLN palsy: Paramedian position. * Bilateral RLN palsy: Median/Paramedian (Airway emergency, but voice is often good). * Combined RLN + SLN palsy: **Cadaveric position** (Intermediate position).
Question 8: A patient complains of sharp shooting pain in the pharynx and tonsil. On examination, a trigger zone is found in the tonsillar area. What is the diagnosis?
- A. Sphenopalatine neuralgia
- B. Paratrigeminal neuralgia
- C. Glossopharyngeal neuralgia (Correct Answer)
- D. Trigeminal neuralgia
Explanation: **Explanation:** The clinical presentation of **sharp, shooting (paroxysmal) pain** localized to the **pharynx and tonsillar area**, initiated by a **trigger zone** in the tonsil, is the classic hallmark of **Glossopharyngeal Neuralgia**. **1. Why Glossopharyngeal Neuralgia is correct:** This condition involves the 9th cranial nerve. The pain is typically unilateral and occurs in the distribution of the glossopharyngeal nerve (posterior third of the tongue, tonsillar fossa, pharynx, and beneath the angle of the jaw). Common triggers include swallowing, talking, coughing, or touching the tonsillar area. **2. Why other options are incorrect:** * **Sphenopalatine neuralgia (Sluder’s Neuralgia):** Characterized by pain in the lower face, nose, and orbit, often associated with nasal congestion or rhinorrhea, rather than pharyngeal triggers. * **Paratrigeminal neuralgia (Raeder’s Syndrome):** Presents as trigeminal pain (usually V1/V2 distribution) accompanied by oculosympathetic palsy (Horner’s syndrome). * **Trigeminal neuralgia (Tic Douloureux):** The most common facial neuralgia, but the pain is located in the distribution of the 5th cranial nerve (usually maxillary or mandibular branches). Trigger zones are typically on the skin of the face or the gingiva, not the pharynx. **High-Yield Clinical Pearls for NEET-PG:** * **Eagle’s Syndrome:** A key differential diagnosis where an elongated styloid process irritates the glossopharyngeal nerve, causing similar pain. * **Treatment:** Medical management is the first line, primarily using **Carbamazepine**. * **Surgical Management:** If medical therapy fails, **Microvascular Decompression (MVD)** of the 9th nerve or rhizotomy is performed. * **Vagal Association:** In rare cases, glossopharyngeal neuralgia can trigger the carotid sinus reflex, leading to bradycardia or syncope.
Question 9: A young man whose voice has not been broken is called:
- A. Puberphonia (Correct Answer)
- B. Androphonia
- C. Plica ventricularis
- D. Functional aphonia
Explanation: **Explanation:** **Puberphonia** (also known as Mutational Falsetto) is a functional voice disorder where a male continues to use a high-pitched pre-pubertal voice despite having a normal, adult-sized larynx. During puberty, the male larynx grows significantly under the influence of testosterone, and the vocal cords lengthen and thicken. Puberphonia occurs when the individual resists this change, often due to psychological factors or difficulty adjusting to the new pitch, resulting in the persistent use of the "unbroken" voice. **Analysis of Incorrect Options:** * **Androphonia:** This refers to a female having an abnormally low-pitched, masculine voice. It is often caused by virilization (e.g., hormonal therapy or tumors) or Reinke’s edema. * **Plica Ventricularis (Ventricular Dysphonia):** This occurs when the false vocal cords (ventricular folds) are used for phonation instead of the true vocal cords. It results in a rough, low-pitched, and strained voice. * **Functional Aphonia:** This is a conversion disorder where the patient speaks only in a whisper despite having normal laryngeal anatomy and adduction during coughing. It is typically triggered by emotional stress. **High-Yield Clinical Pearls for NEET-PG:** * **Laryngeal Findings:** In puberphonia, the larynx is anatomically normal. On stroboscopy, the vocal cords are often tense and thin. * **Gutzmann’s Test:** This is the diagnostic/therapeutic maneuver where downward pressure is applied on the thyroid cartilage to relax the vocal cords, resulting in a lower pitch. * **Treatment:** The primary treatment is **Voice Therapy (Speech therapy)**, specifically the "Glottal Fry" technique. Type 3 Thyroplasty (Relaxation Thyroplasty) is reserved for resistant cases.
Question 10: Type I thyroplasty is indicated for which of the following vocal cord conditions?
- A. Vocal cord medialization (Correct Answer)
- B. Vocal cord lateralization
- C. Vocal cord shortening
- D. Vocal cord lengthening
Explanation: **Explanation:** **Type I Thyroplasty**, also known as **Isshiki Type I**, is a surgical procedure designed for **vocal cord medialization**. It is primarily indicated for patients with **unilateral vocal cord paralysis** (where the cord is fixed in an abducted or paramedian position) or vocal cord atrophy. 1. **Why Option A is Correct:** The procedure involves creating a small window in the thyroid cartilage and inserting a spacer (Silastic block or Gore-Tex) to push the paralyzed vocal cord toward the midline. This allows the healthy vocal cord to make contact with the paralyzed one during phonation, thereby improving voice quality, reducing breathiness, and preventing aspiration. 2. **Why Other Options are Incorrect:** * **Type II (Lateralization):** Indicated for adductor spasmodic dysphonia to move the cords apart. * **Type III (Shortening/Relaxation):** Used to lower the vocal pitch (e.g., in Mutational Falsetto/Puberphonia) by shortening or relaxing the cords. * **Type IV (Lengthening/Tension):** Used to raise the vocal pitch (e.g., in Androphonia or for gender reassignment) by tensing the cricothyroid distance. **High-Yield Clinical Pearls for NEET-PG:** * **Isshiki Classification:** Remember the sequence: **1-Medial, 2-Lateral, 3-Lower pitch, 4-Higher pitch.** * **Prerequisite:** Type I Thyroplasty is usually performed under **local anesthesia** so the surgeon can monitor the patient's voice quality in real-time to achieve optimal positioning. * **Alternative:** Injection Laryngoplasty (using Teflon or Gelfoam) is another method for medialization but is often temporary compared to Thyroplasty.
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