Debra M Don

University of Southern California, Los Angeles, California, United States

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Publications (4)5.51 Total impact

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    ABSTRACT: A 3-month-old baby was diagnosed with obstructive sleep apnea (OSA) on polysomnography (PSG) with a high apnea hypopnea index (AHI). On further investigations he was found to have a vallecular cyst that was successfully treated. We discuss the clinical presentation of vallecular cysts and the importance of polysomnography in identifying this rare condition. De A; Don DM; Magee III W; Ward SLD. Vallecular cyst as a cause of obstructive sleep apnea in an infant. J Clin Sleep Med 2013;9(8):825-826.
    Journal of clinical sleep medicine: JCSM: official publication of the American Academy of Sleep Medicine 01/2013; 9(8):825-6. · 2.93 Impact Factor
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    International Journal of Pediatrics 01/2012; 2012:535016.
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    ABSTRACT: Some have suggested that younger children have a more severe form of obstructive sleep apnea than older children and therefore are at a higher risk for respiratory compromise after tonsillectomy and adenoidectomy. However, at present there are few studies that have identified any significant correlation between age and severity of obstructive sleep apnea. To determine if age specific differences in obstructive sleep apnea are present in children. Retrospective chart review. Tertiary care children's hospital. The records of children (1-18 years of age) with obstructive sleep apnea diagnosed by overnight polysomnography between January 1998 and January 2001 were reviewed. Children included in the study also had evidence of adenotonsillar hypertrophy and had no other co-existing medical problems. Overnight polysomnography was performed in all children. Apnea-hypopnea index (AHI), baseline and lowest O(2) saturation, baseline and peak end tidal CO(2), and total number of obstructive apneas, hypopneas, central apneas and mixed apneas were measured during each polysomnogram. Children were subdivided into the following age groups: 1-2, 3-5, 6-11 and 12-18 years. Polysomnograms were classified into normal, mild, moderate and severe categories. Three hundred and sixty-three children were studied; 45 children were ages 1-2 years, 159 children were ages 3-5 years, 137 children were 6-11 years and 22 children were 12-18 years. Although there appears to be a trend towards a greater mean number of obstructive apneas, hypopneas, central apneas, mixed apneas, a higher mean AHI, lower mean SaO(2) nadir, and a higher mean PETCO(2) in the younger age groups when compared to the older groups, a Student's t-test demonstrates that there is no statistical significance for most OSA parameters. An analysis of variance using the F-test reveals statistical significance (p<0.01) when children ages 1-2 were compared to those 3-5, 6-11 or 12-18 years of age for the variables AHI, mean number of central apneas, hypopneas and mixed apneas. When comparing patients in the various severity categories, children ages 1-2 years show a distinct distribution with a larger percentage in the moderate to severe categories. Chi square analysis reveals a significant difference between the frequency distribution of children in age group 1-2 years and that of the other age groups (p<0.01). There is a predilection for children less than 3 years of age to have more severe obstructive sleep apnea as documented by polysomnography. Central apnea also appears to be more common in this age group. These findings may be explained by anatomic and physiologic differences related to age and support a period of observation following adenotonsillectomy in younger children.
    International journal of pediatric otorhinolaryngology 05/2009; 73(7):1025-8. · 0.85 Impact Factor
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    ABSTRACT: Multiple clinical trials demonstrate the value of administering antibiotics for recurrent tonsillitis. However, there is no consensus as to the role of antibiotics in the management of adenotonsillar hypertrophy and obstructive sleep apnea (OSA). It has been suggested that antibiotics may reduce adenotonsillar size, improve obstructive symptoms, and obviate the need for surgery. The goal of this pilot study was to evaluate the efficacy of a broad-spectrum antibiotic in the management of adenotonsillar hypertrophy and OSA. Twenty-two children ages 2 through 12, with evidence of OSA, were enrolled in this double-blinded, prospective clinical trial. Children were randomly assigned into 1 of 2 groups. Group I received azithromycin for a 30-day period (12 mg/kg on days 1-5; the regimen was repeated on days 11-15 and days 21-25). Group II received a placebo administered in the same regimen for a 30-day period. Overnight polysomnography was performed before and within 2 weeks after drug administration. Polysomnographic indices of OSA severity appear to indicate an improvement in the antibiotic as compared to the placebo group, but a comparison of mean +/- standard error for each parameter failed to demonstrate statistical significance using the paired t test. Only 1 of 11 (9%) children had normalization of their polysomnographic parameters. These results suggest that a course of a broad-spectrum antibiotic may be effective in temporarily improving OSA due to adenotonsillar hypertrophy, but does not appear to obviate the need for surgery.
    Otolaryngology Head and Neck Surgery 11/2005; 133(4):562-8. · 1.73 Impact Factor