Publications by authors named "Karin Gardner Johnson"

Insurance coverage policies define the diagnostic criteria and adherence requirements for patients to qualify for initial and ongoing therapy with continuous positive airway pressure (CPAP) treatment, the most complete therapy for obstructive sleep apnea. Unfortunately, a number of patients who use CPAP and benefit from treatment fail to meet these requirements. We present 15 patients who fail to meet Centers for Medicare and Medicaid Services' (CMS) criteria, highlighting policies that do not support patient care.

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Article Synopsis
  • The study aimed to analyze the differences in demographics (sex, age, BMI) and health conditions (comorbidities) among sleep clinic patients with mild obstructive sleep-disordered breathing using different apnea-hypopnea index (AHI) criteria.
  • A cohort of 305 adult patients was examined for polysomnography results, with significant findings regarding AHI rates, positive airway pressure adherence, and health issues prevalent in these patients.
  • Results indicated that women had higher rates of various comorbidities like obesity and depression, while men showed higher adherence to positive airway pressure therapy; overall, there were notable differences in sleep quality and apnea/hypopnea durations based on sex, age, and BMI.
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Objective: Apnea/hypopnea index (AHI), especially without arousal criteria, does not adequately risk stratify patients with mild obstructive sleep apnea (OSA). We describe and test scoring reliability of an event, Flow Limitation/Obstruction With recovery breath (FLOW), representing obstructive airflow disruptions using only pressure transducer and snore signals available without electroencephalography.

Methods: The following process was used (i) Development of FLOW event definition, (ii) Training period and definition refinement, and (iii) Reliability testing on 10 100-epoch polysomnography (PSG) samples and two 100-sample tests.

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Many types of positive airway pressure (PAP) devices are used to treat sleep-disordered breathing including obstructive sleep apnea, central sleep apnea, and sleep-related hypoventilation. These include continuous PAP, autoadjusting CPAP, bilevel PAP, adaptive servoventilation, and volume-assured pressure support. Noninvasive PAP has significant leak by design, which these devices adjust for in different manners.

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