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Manometric study in Kearns-Sayre syndrome
K H Katsanos1, D Nastos, V Noussias
1Department Hepato-Gastroenterology, Medical School, University of Ioannina, Ioannina, Greece.
Summary
Kearns-Sayre syndrome (KSS) can cause significant dysphagia due to ineffective pharyngeal and esophageal peristalsis. Manometric studies reveal low contraction pressures, impacting swallowing function and quality of life in KSS patients.
Area of Science:
- Neurology
- Gastroenterology
- Genetics
Background:
- Kearns-Sayre syndrome (KSS) is a rare mitochondrial disorder.
- Dysphagia is a known symptom, but its manometric characteristics are poorly understood.
- Understanding dysphagia patterns is crucial for KSS prognosis and patient quality of life.
Observation:
- An 18-year-old female with KSS presented with dysphagia and respiratory infection.
- Clinical findings included growth retardation, external ophthalmoplegia, retinopathy, hearing impairment, and ataxia.
- Cardiac and brain imaging revealed conduction defects and cerebellar abnormalities.
Findings:
- Pharyngeal and upper esophageal sphincter (UES) resting pressures were normal.
- Swallowing peak contraction pressure and UES closing pressure were significantly reduced.
- Pharyngeal and upper esophageal peristaltic waves were weak and ineffective, though UES relaxation and coordination were preserved.
Implications:
- Manometric findings highlight specific esophageal motility deficits in KSS-related dysphagia.
- These deficits likely contribute to the severity of swallowing difficulties.
- Targeted nutritional and supplement interventions may improve clinical outcomes in KSS patients.