11 research outputs found

    Changes in Transcranial Ultrasound Velocities in Children with Sickle Cell Disease Undergoing Adenotonsillectomy

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    Objectives: (1) To assess for changes in cerebral blood flow velocity in children with sickle cell disease and obstructive sleep apnea (OSA) following adenotonsillectomy. (2) To determine if clinical factors such as OSA severity affect cerebral blood flow velocity values. Study Design: Case series with chart review over 10 years. Settings: Two tertiary children’s hospitals. Subjects and Methods: Children aged 2 to 18 years with a history of sickle cell disease and OSA, as defined by an apnea hypopnea index (AHI) \u3e1 on polysomnography, were eligible for inclusion. Transcranial Doppler ultrasonography was used to assess cerebral blood flow velocity before and after adenotonsillectomy. Results: Fifteen patients met inclusion criteria; 73% (n = 11) were female. The mean preoperative AHI was 8.9 (range, 1.2-22.2). Six (40%) patients had severe OSA (AHI \u3e10). Following adenotonsillectomy, there was a significant reduction in mean (95% CI) cerebral blood flow velocities of the left terminal internal cerebral artery, 91.2 (79.4-103.1) to 75.7 (61.7-89.8; P =.018), and the right middle cerebral artery, 134.3 (119.2-149.3) to 116.5 (106.5-126.5; P =.003). There was not a significant correlation between baseline AHI and change in cerebral blood flow velocities. Conclusion: Adenotonsillectomy may result in a reduction in some cerebral blood flow velocities. Further research is needed to determine if changes in cerebral velocities as assessed by transcranial Doppler ultrasonography translate into a reduced risk of stroke for children with sickle cell disease and OSA

    International consensus statement on obstructive sleep apnea

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    International consensus statement on obstructive sleep apnea

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    BACKGROUND: Evaluation and interpretation of the literature on obstructive sleep apnea is needed to consolidate and summarize key factors important for clinical management of the OSA adult patient. Toward this goal, an international collaborative of multidisciplinary experts in sleep apnea evaluation and treatment have produced the International Consensus statement on Obstructive Sleep Apnea (ICS:OSA). METHODS: Using previously defined methodology, focal topics in OSA were assigned as literature review (LR), evidence-based review (EBR), or evidence-based review with recommendations (EBR-R) formats. Each topic incorporated the available and relevant evidence which was summarized and graded on study quality. Each topic and section underwent iterative review and the ICS:OSA was created and reviewed by all authors for consensus. RESULTS: The ICS:OSA addresses OSA syndrome definitions, pathophysiology, epidemiology, risk factors for disease, screening methods, diagnostic testing types, multiple treatment modalities, and effects of OSA and treatment on the multiple comorbidities. Specific focus on outcomes with positive airway pressure (PAP) and surgical treatments were evaluated. CONCLUSION: This review of the literature in OSA consolidates the available knowledge and identifies the limitations of the current evidence. This effort aims to highlight the basis of OSA evidence-based practice and identify future research needs. Knowledge gaps and opportunities for improvement include improving the metrics of OSA disease, determining the optimal OSA screening paradigms, developing strategies for PAP adherence and longitudinal care, enhancing selection of PAP alternatives and surgery, understanding health risk outcomes, and translating evidence into individualized approaches to therapy
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