Kathleen L Curley1, Sachini Kahanda2, Katia M Perez3, Beth A Malow4, Ashley H Shoemaker2. 1. The George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA. 2. Department of Pediatrics, Division of Pediatric Endocrinology, Vanderbilt University Medical Center, Nashville, Tennessee, USA. 3. Wake Forest School of Medicine, Winston-Salem, North Carolina, USA. 4. Department of Neurology and Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Abstract
BACKGROUND/AIMS: Pseudohypoparathyroidism (PHP) is a rare, genetic disorder. Patients with PHP may have increased prevalence of obstructive sleep apnea (OSA) but this has not been prospectively studied. METHODS: We enrolled children aged 6-18 years with PHP and matched controls. Evaluation included physical examination, medical history, and polysomnography. RESULTS: Fifteen children with PHP type 1A (PHP1A) and 15 controls completed the study. Both groups were obese (BMI 32.2 ± 8.7 vs. 31.7± 6.5). The majority of PHP1A patients required tympanostomy tubes (86.7%) and adenotonsillectomy (73.3%). The primary outcome, i.e., the obstructive disturbance index, was significantly higher in PHP1A children versus controls (1.8 ± 2.3 vs. 0.6 ± 0.5, p = 0.045). Children with PHP1A were more likely to have OSA compared with controls (60.0 vs. 13.3%, p = 0.008). Three siblings with PHP type 1B (PHP1B) were also studied (BMI 25.9 ± 9.0). None had a history of adenotonsillectomy, one had tympanostomy tubes. The obstructive disturbance index (2.0 ± 2.3) was similar to that of children with PHP1A. Two (66.7%) PHP1B participants had OSA. CONCLUSION: Children with PHP1A are at an increased risk for OSA compared with similarly obese peers. They also have higher rates of otitis media and adenotonsillar hypertrophy. Screening for OSA should be considered in all patients with PHP1A and possibly PHP1B though more research is needed.
BACKGROUND/AIMS: Pseudohypoparathyroidism (PHP) is a rare, genetic disorder. Patients with PHP may have increased prevalence of obstructive sleep apnea (OSA) but this has not been prospectively studied. METHODS: We enrolled children aged 6-18 years with PHP and matched controls. Evaluation included physical examination, medical history, and polysomnography. RESULTS: Fifteen children with PHP type 1A (PHP1A) and 15 controls completed the study. Both groups were obese (BMI 32.2 ± 8.7 vs. 31.7± 6.5). The majority of PHP1A patients required tympanostomy tubes (86.7%) and adenotonsillectomy (73.3%). The primary outcome, i.e., the obstructive disturbance index, was significantly higher in PHP1A children versus controls (1.8 ± 2.3 vs. 0.6 ± 0.5, p = 0.045). Children with PHP1A were more likely to have OSA compared with controls (60.0 vs. 13.3%, p = 0.008). Three siblings with PHP type 1B (PHP1B) were also studied (BMI 25.9 ± 9.0). None had a history of adenotonsillectomy, one had tympanostomy tubes. The obstructive disturbance index (2.0 ± 2.3) was similar to that of children with PHP1A. Two (66.7%) PHP1B participants had OSA. CONCLUSION:Children with PHP1A are at an increased risk for OSA compared with similarly obese peers. They also have higher rates of otitis media and adenotonsillar hypertrophy. Screening for OSA should be considered in all patients with PHP1A and possibly PHP1B though more research is needed.
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