Phoniatrics and Voice Disorders Practice Questions

Q: In type-4 thyroplasty, what is the primary modification of the vocal cord?

Lengthening. **Explanation:** **Thyroplasty** (Phonosurgery) is categorized into four types based on the Isshiki classification, designed to alter the position or tension of the vocal cords to improve voice quality. **1. Why "Lengthening" is Correct:** **Type-4 Thyroplasty (Cricothyroid Approximation)** is designed to **increase the pitch** of the voice. This is achieved by approximating the thyroid cartilage to the cricoid cartilage using sutures, mimicking the action of the cricothyroid muscle. This maneuver **lengthens and increases the tension** of the vocal folds. It is primarily indicated for patients with **androphonia** (low-pitched voice in females) or in **gender-affirming surgery** (male-to-female transitions). **2. Why Other Options are Incorrect:** * **A. Medial Displacement (Type-1):** This is the most common type. It involves placing an implant (e.g., Silastic) to push the vocal cord toward the midline. It is used for **unilateral vocal cord palsy** to correct glottic insufficiency. * **B. Lateral Displacement (Type-2):** This involves midline vertical incision of the thyroid cartilage and widening it to move the vocal cords apart. It is used for **adductor spasmodic dysphonia**. * **C. Shortening (Type-3):** This involves removing a vertical strip of thyroid cartilage or depressing the anterior commissure to **relax/shorten** the vocal cords. It is used to **lower the pitch** (e.g., in puberphonia). **High-Yield Clinical Pearls for NEET-PG:** * **Type 1:** Medialization (For Paralysis/Atrophy) - *Most common.* * **Type 2:** Lateralization (For Spasmodic Dysphonia). * **Type 3:** Relaxation/Shortening (To Lower Pitch - for Puberphonia). * **Type 4:** Stretching/Lengthening (To Raise Pitch - for Androphonia). * **Mnemonic:** **M**y **L**ittle **R**ed **S**hoe (**M**edialization, **L**ateralization, **R**elaxation, **S**tretching).

Q: Under what conditions is endotracheal tube testing performed?

No anesthesia. ### Explanation The correct answer is **C. No anesthesia**. **Underlying Medical Concept:** Endotracheal tube (ETT) testing, specifically in the context of **Phoniatrics**, is used to assess the functional status of the vocal folds and the integrity of the recurrent laryngeal nerve (RLN). The primary goal is to observe the **voluntary and reflex movement** of the vocal folds. If any form of anesthesia (General or Local) is administered, the sensory-motor reflex arc is interrupted. To accurately evaluate the patient's ability to adduct/abduct the vocal folds or to perform a "cough test" to check for glottic competence, the patient must be fully conscious and have intact airway reflexes. **Why the other options are incorrect:** * **General Anesthesia (B):** This involves neuromuscular blockade or deep sedation, which causes vocal fold paralysis or immobility, making it impossible to assess active laryngeal function. * **Local Anesthesia (D):** Applying local anesthetics (like lignocaine spray) to the endolarynx abolishes the cough reflex and sensory feedback, which can mask underlying pathologies like sensory laryngeal neuropathy or aspiration risks. * **Ketamine (A):** While Ketamine preserves airway reflexes better than other induction agents, it still induces a dissociative state where voluntary commands (e.g., "say 'Eee'") cannot be followed. **High-Yield Clinical Pearls for NEET-PG:** * **Stroboscopy:** The gold standard for assessing the mucosal wave of vocal folds; also performed without general anesthesia. * **RLN Injury:** During thyroid surgery, if an ETT with electrodes is used for Nerve Monitoring (IONM), the patient is under GA, but **neuromuscular blockers must be avoided** after induction to allow for electromyographic (EMG) signals. * **Positioning:** For most phoniatric bedside tests, the patient is in a sitting position to mimic natural phonation.

Q: A female patient presents with a male-like voice. What type of thyroplasty is typically indicated?

Type IV. **Explanation:** The patient presents with **Androphonia** (a female with a male-like low pitch). Pitch is determined by the tension, length, and mass of the vocal folds. To raise the pitch, the vocal folds must be lengthened or tensed. **Type IV Thyroplasty (Cricothyroid Approximation)** is the procedure of choice. It involves suturing the thyroid cartilage to the cricoid cartilage, mimicking the action of the cricothyroid muscle. This increases the distance between the anterior commissure and the arytenoids, thereby **lengthening and tensing the vocal folds**, which raises the fundamental frequency (pitch). **Analysis of Incorrect Options:** * **Type I (Medialization):** Used for unilateral vocal cord palsy. It pushes the cord toward the midline to improve glottic closure. * **Type II (Lateralization):** Used for Adductor Spasmodic Dysphonia. It moves the cords apart to prevent forceful over-approximation. * **Type III (Relaxation/Shortening):** Used for **Puberphonia** (a male with a high-pitched female voice). It involves vertical strips of cartilage being removed to slacken the cords, thereby **lowering the pitch**. **NEET-PG High-Yield Pearls:** * **Isshiki Classification:** The standard classification for thyroplasty (Phonosurgery). * **Puberphonia:** Most common cause is psychological; initial treatment is **Gutzmann’s Pressure Test** (manual depression of the thyroid cartilage) and speech therapy. Surgery (Type III) is reserved for refractory cases. * **Androphonia:** Often seen in hormonal imbalances or post-virilization; Type IV thyroplasty is the surgical solution.

Q: The voice is not affected in which of the following conditions?

Unilateral abductor palsy. **Explanation:** The quality of voice depends primarily on the ability of the vocal cords to meet in the midline (adduction) and vibrate effectively. **Why Unilateral Abductor Palsy is the correct answer:** In unilateral abductor palsy (paralysis of the Posterior Cricoarytenoid muscle), the affected vocal cord remains in the **median or paramedian position**. Because the cord is already at or near the midline, the healthy vocal cord can easily make contact with it during phonation. As a result, the glottic gap is closed, and the **voice remains normal or near-normal**. The primary symptom in these patients is often mild exertional dyspnea rather than dysphonia. **Analysis of Incorrect Options:** * **Unilateral Adductor Palsy:** The affected cord remains in the abducted (lateral) position. The healthy cord cannot cross the midline to meet it, resulting in a large glottic gap, leading to a **breathy, weak voice (hoarseness)**. * **Bilateral Superior Laryngeal Palsy:** This involves paralysis of the cricothyroid muscles, which are responsible for tensing the cords. This leads to a loss of longitudinal tension, resulting in a **weak, low-pitched voice** and an inability to sing high notes. * **Total Adductor Palsy:** Similar to unilateral adductor palsy but more severe; the inability to adduct the cords leads to significant air leak and a **whispering voice or aphonia**. **Clinical Pearls for NEET-PG:** * **Posterior Cricoarytenoid (PCA):** The only abductor of the vocal cords ("**P**ull **C**ords **A**part"). * **Semon’s Law:** In progressive lesions of the recurrent laryngeal nerve, abductor fibers are more susceptible and paralyzed first; the cord moves to the midline. * **Position of Cords:** In **bilateral abductor palsy**, the voice is good, but the airway is compromised (stridor), often requiring a tracheostomy. In **bilateral adductor palsy**, the airway is excellent, but the patient is aphonic.

Q: What is the treatment of choice for nodules present at the junction of the anterior one-third and posterior two-thirds of the vocal cords in a 30-year-old female singer with a history of gastroesophageal reflux?

Speech therapy and Proton Pump Inhibitor (PPI). ### Explanation **1. Why Option C is Correct:** The clinical presentation describes **Vocal Nodules** (also known as Singer’s or Screamer’s nodules). These are benign, symmetrical, inflammatory thickenings located at the **junction of the anterior 1/3 and posterior 2/3** of the vocal cords—the point of maximum vibratory amplitude. The primary etiology is **vocal abuse** (common in singers), and **Gastroesophageal Reflux Disease (GERD)** is a significant aggravating factor that prevents healing. The first-line management for vocal nodules is always **conservative**. Speech therapy (voice rest and re-education) addresses the mechanical cause, while Proton Pump Inhibitors (PPIs) treat the chemical irritation from reflux. Surgery is reserved only for chronic, fibrotic nodules that fail conservative management. **2. Why Other Options are Incorrect:** * **Options A & B (Microlaryngectomy/CO2 Laser):** Surgical intervention is **not** the first-line treatment. Premature surgery can lead to vocal cord scarring, which is detrimental to a professional singer’s career. Surgery is only considered if there is no improvement after 3–6 months of speech therapy. * **Option D (Direct Laryngoscopy and Biopsy):** This is an invasive procedure used for suspicious, asymmetrical, or neoplastic lesions. Vocal nodules have a classic appearance and history; a biopsy is unnecessary and potentially harmful to the delicate mucosal wave of a singer. **3. Clinical Pearls for NEET-PG:** * **Location:** Junction of anterior 1/3 and posterior 2/3 (Site of maximum trauma). * **Demographics:** Most common in male children (Screamer’s nodules) and adult females (Singer’s nodules). * **Stroboscopy:** Shows symmetrical "hourglass" glottic closure. * **Histology:** Characterized by Reinke’s edema, fibrosis, and epithelial hyperplasia. * **Management Rule:** "Voice therapy first, surgery last."

Q: What is the term for a young man whose voice has not broken?

Puberphonia. **Explanation:** **Puberphonia (Mutational Falsetto)** is the correct answer. It refers to the failure of the male voice to change from the high-pitched prepubertal quality to the low-pitched adult male quality at puberty. * **Mechanism:** During puberty, the male larynx grows significantly under testosterone influence, and the vocal cords lengthen and thicken. In puberphonia, the patient (usually due to psychological reasons or habit) continues to use the prepubertal mechanism by keeping the vocal cords tense and the larynx elevated. * **Key Feature:** The voice is high-pitched, breathy, and unstable. It is often successfully treated with **Gutzmann’s pressure test** (manual downward pressure on the thyroid cartilage) and speech therapy. **Analysis of Incorrect Options:** * **Androphonia:** This is the opposite of puberphonia; it refers to a female possessing a low-pitched, masculine voice (often seen in Virilization or Reinke’s edema). * **Plica Ventricularis (Ventricular Dysphonia):** This occurs when the **false vocal cords** (ventricular bands) are used for phonation instead of the true vocal cords. It results in a rough, low-pitched, and strained voice. * **Functional Aphonia:** A psychological disorder (usually in young females) where the patient speaks only in a whisper despite having a normal larynx. On coughing, the vocal cords adduct normally, proving the mechanism is intact. **High-Yield Clinical Pearls for NEET-PG:** * **Gutzmann’s Test:** Diagnostic and therapeutic maneuver for Puberphonia. * **Type 3 Thyroplasty (Relaxation Thyroplasty):** Surgical management for puberphonia if speech therapy fails. * **Type 4 Thyroplasty (Tension Thyroplasty):** Used for Androphonia to raise the pitch.

Q: What is the recommended treatment for unilateral vocal cord palsy?

Isshiki type I thyroplasty. **Explanation:** In **unilateral vocal cord palsy**, the primary clinical issue is the inability of the vocal cords to meet at the midline (glottic insufficiency). This results in a breathy voice, weak cough, and potential aspiration. The goal of treatment is **medialization** of the paralyzed cord to allow the healthy cord to make contact. * **Isshiki Type I Thyroplasty (Correct):** This is a **medialization thyroplasty**. It involves creating a window in the thyroid cartilage and placing an implant (e.g., Silastic or Gore-Tex) to push the paralyzed vocal cord toward the midline. This improves voice quality and airway protection. **Analysis of Incorrect Options:** * **Isshiki Type II Thyroplasty:** This is a **lateralization thyroplasty**. It is used to move the vocal cords apart, primarily indicated for **Adductor Spasmodic Dysphonia** to reduce the "strangled" voice quality. * **Woodman Operation:** This is a surgical procedure for **bilateral abductor palsy**. It involves arytenoidectomy and lateralization of the cord to open the airway, sacrificing voice quality for respiratory safety. * **Laser Adenoidectomy:** This is a procedure to remove hypertrophied adenoids in the nasopharynx and has no relevance to vocal cord paralysis. **High-Yield Clinical Pearls for NEET-PG:** * **Isshiki Classification of Thyroplasty:** * **Type I:** Medialization (for Unilateral Palsy). * **Type II:** Lateralization (for Spasmodic Dysphonia). * **Type III:** Relaxation/Shortening (to lower pitch). * **Type IV:** Stretching/Lengthening (to raise pitch, e.g., in Androphonia). * **Gelfoam Injection:** Used for temporary medialization if recovery of nerve function is expected within 6 months. * **Most common cause** of unilateral palsy is surgical trauma (especially Thyroidectomy).

Question 1

In type-4 thyroplasty, what is the primary modification of the vocal cord?

Accepted Answer

Lengthening

Answer

Medial displacement

Answer

Lateral displacement

Answer

Shortening

Question 2

Under what conditions is endotracheal tube testing performed?

Accepted Answer

No anesthesia

Answer

Ketamine

Answer

General anesthesia

Answer

Local anesthesia

Question 3

In esophageal speech, what is the dynamic component?

Accepted Answer

Pharyngo-esophageal segment

Answer

Buccal segment

Answer

Trachea

Answer

Pharynx

Question 4

A female patient presents with a male-like voice. What type of thyroplasty is typically indicated?

Accepted Answer

Type IV

Answer

Type I

Answer

Type II

Answer

Type III

Question 5

The voice is not affected in which of the following conditions?

Accepted Answer

Unilateral abductor palsy

Answer

Unilateral adductor palsy

Answer

Bilateral superior laryngeal palsy

Answer

Total adductor palsy

Question 6

What is the treatment of choice for nodules present at the junction of the anterior one-third and posterior two-thirds of the vocal cords in a 30-year-old female singer with a history of gastroesophageal reflux?

Accepted Answer

Speech therapy and Proton Pump Inhibitor (PPI)

Answer

Microlaryngectomy

Answer

Microlaryngoscopic surgery with CO2 laser

Answer

Direct laryngoscopy and biopsy

Question 7

Crocodile tears is due to?

Accepted Answer

Improper regeneration of facial nerve

Answer

Cross innervation of facial nerve fibers

Answer

Cross innervation of trigeminal nerve fibers

Answer

Improper regeneration of trigeminal nerve

Question 8

What is the term for a young man whose voice has not broken?

Accepted Answer

Puberphonia

Answer

Androphonia

Answer

Plica ventricularis

Answer

Functional aphonia

Question 9

Which of the following are features of functional aphonia?

Accepted Answer

On laryngoscopy, vocal cords are abducted

Answer

Increased incidence in males

Answer

Due to vocal cord paralysis

Answer

Can cough

Question 10

What is the recommended treatment for unilateral vocal cord palsy?

Accepted Answer

Isshiki type I thyroplasty

Answer

Isshiki type II thyroplasty

Answer

Woodman operation

Answer

Laser adenoidectomy

Phoniatrics and Voice Disorders — MCQs

Phoniatrics and Voice Disorders — MCQs

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