Which intervention is NOT effective for improving opening of the upper esophageal sphincter (UES)?

Which intervention is NOT effective for improving opening of the upper esophageal sphincter (UES)?

• A. Mendelsohn Maneuver
• B. Shaker exercise
• C. Lingual protrusion exercise
• D. Botulinum toxin injection

Answer: (C)

Opening the upper esophageal sphincter relies mainly on increasing hyolaryngeal elevation and movement to widen the sphincter, along with relaxing the cricopharyngeal muscle. The Mendelsohn maneuver helps by prolonging laryngeal elevation, which keeps the UES open longer during swallow. The Shaker exercise strengthens the muscles that lift and pull the larynx forward, boosting hyolaryngeal excursion and improving UES opening. Botulinum toxin injected into the cricopharyngeus lowers the resting tone of the UES, making it easier to open during swallowing. Lingual protrusion exercise enhances tongue tip and posterior pharyngeal wall contact for bolus propulsion, but it doesn’t directly affect the mechanics that widen or relax the UES. Therefore, it is not effective for improving opening of the UES.

Opening the upper esophageal sphincter relies mainly on increasing hyolaryngeal elevation and movement to widen the sphincter, along with relaxing the cricopharyngeal muscle. The Mendelsohn maneuver helps by prolonging laryngeal elevation, which keeps the UES open longer during swallow. The Shaker exercise strengthens the muscles that lift and pull the larynx forward, boosting hyolaryngeal excursion and improving UES opening. Botulinum toxin injected into the cricopharyngeus lowers the resting tone of the UES, making it easier to open during swallowing. Lingual protrusion exercise enhances tongue tip and posterior pharyngeal wall contact for bolus propulsion, but it doesn’t directly affect the mechanics that widen or relax the UES. Therefore, it is not effective for improving opening of the UES.