Dysphagia in bulimia nervosa

Area of Science:

• Otolaryngology
• Gastroenterology
• Dentistry

Background:

• Bulimia nervosa is an eating disorder often associated with oral health complications.
• Salivary gland function and swallowing patterns in patients with bulimia nervosa require further investigation.

Purpose of the Study:

• To evaluate salivary gland function and oropharyngeal swallowing patterns in patients with bulimia nervosa.
• To compare these functions between patients with bulimia nervosa and healthy controls.

Main Methods:

• Medical, oral, and social history questionnaires.
• Oral examinations with dental radiographs and photographs.
• Saliva collection (unstimulated and stimulated parotid and submandibular).
• Assessment of pharyngeal and velar gag reflexes.
• Real-time ultrasound and videofluorographic swallowing studies.
• Salivary amylase concentration determination.

Main Results:

• No significant differences in salivary gland flow rates or amylase concentrations between groups.
• Absence of pharyngeal gag reflex in 9/13 bulimic patients; velar gag reflex in only 1.
• All healthy controls possessed both gag reflexes.
• All bulimic patients exhibited abnormal oropharyngeal swallow patterns and prolonged dry swallow duration.

Conclusions:

• Patients with bulimia nervosa demonstrate significant deficits in oropharyngeal swallowing mechanisms and gag reflexes.
• Salivary gland function appears unaffected in this patient cohort.
• These findings suggest that oral-motor dysfunction may be a contributing factor in bulimia nervosa.