[Improvement of obstructive sleep apnea by uvulopalatopharyngoplasty and tonsillectomy in a case of Duchenne muscular dystrophy].
A 10-year-old boy with Duchenne muscular dystrophy (DMD) underwent uvulopalatopharyngoplasty and tonsillectomy for obstructive sleep apnea (OSA). He has snored loudly during nocturnal sleep since infancy, and OSA developed one and a half years after he was wheel chair-bound at 8 years. Magnetic resonance imaging (MRI), conventional spirometry and overnight polysomnography were performed before and after the surgery. MRI before surgery revealed moderate tonsillar hypertrophy and a long uvula which narrowed the upper airway. After the surgery, his vital capacity (VC) was not changed (% VC; from 77 to 78%), but forced expiratory volume (FEV) was improved (FEV 1.0%; from 75 to 86%). A preoperative apnea index of 32.8/hour decreased to 0.8/hour postoperatively. REM-related falls in HbSaO2 improved remarkably. The present case suggests that subjects with DMD with tonsillar hypertrophy and a redundant uvula tend to develop noctrurnal OSA earlier than DMD cases with a normal tonsil and uvula. Assessment of respiratory function, particularly FEV 1.0%, is important for determining surgical indication of OSA in patients with DMD.
Sudo
A
A
Department of Child Neurology, National Center Hospital for Mental, Nervous and Muscular Disorders, Tokyo.
Fukumizu
M
M
Sugai
K
K
Matsumoto
H
H
Nagasawa
T
T
Komaki
H
H
Hanaoka
S
S
Sasaki
M
M
Takashima
S
S
Hayashida
T
T
D002648:Child; D005541:Forced Expiratory Volume; D006801:Humans; D008297:Male; D020388:Muscular Dystrophy, Duchenne / Q000150:complications*; D013517:Otorhinolaryngologic Surgical Procedures / Q000379:methods*; D010160:Palate, Soft / Q000601:surgery; D010614:Pharynx / Q000601:surgery; D020181:Sleep Apnea, Obstructive / Q000209:etiology / Q000601:surgery*; D014068:Tonsillectomy; D016896:Treatment Outcome; D014609:Uvula / Q000601:surgery