Sleep disordered breathing in children with mitochondrial disease

Area of Science:

• Pediatric Sleep Medicine
• Mitochondrial Disease Research
• Neuromuscular Disorders

Background:

• Primary mitochondrial disease (MD) is a group of inherited metabolic disorders affecting cellular energy production.
• Sleep disordered breathing (SDB) encompasses conditions like obstructive sleep apnea and hypoventilation, impacting sleep quality and health.
• The prevalence and characteristics of SDB in pediatric patients with MD are not well-established.

Purpose of the Study:

• To determine the prevalence of sleep disordered breathing (SDB) in children diagnosed with primary mitochondrial disease (MD).
• To describe the clinical symptoms and polysomnographic findings associated with SDB in this pediatric population.
• To identify potential risk factors or associated conditions linked to SDB in children with MD.

Main Methods:

• Retrospective chart review of 18 pediatric patients (ages 1.5-18 years) with confirmed primary mitochondrial disease.
• Analysis of polysomnography data collected between 2007 and 2012 at a pediatric sleep center.
• Evaluation of indications for polysomnography, including excessive somnolence, fatigue, snoring, and sleep movement complaints.

Main Results:

• Sleep disordered breathing (SDB) was diagnosed in 56% (N=10) of the pediatric patients with MD.
• Obstructive sleep apnea was the most common SDB type (60% of SDB cases), followed by hypoxemia (40%) and sleep hypoventilation (20%).
• Significant associations were found between SDB and decreased muscle tone (P=0.043) and overweight/obesity (P=0.036) in children with MD.

Conclusions:

• Sleep disordered breathing (SDB) is a frequent comorbidity in children with primary mitochondrial disease (MD).
• Polysomnography is crucial for early detection of SDB in pediatric patients with MD.
• Identifying and managing SDB can lead to improved health outcomes and quality of life for children with mitochondrial disease.