24 results match your criteria: "UAHS Center for Sleep & Circadian Sciences University of Arizona Tucson AZ.[Affiliation]"

Obstructive sleep apnea (OSA) is one of the most common sleep disorders. Positive airway pressure therapy (PAP) is considered the gold standard for treating OSA. Yet, optimal therapy might not be achieved in some cases of severe OSA, despite using maximum settings.

View Article and Find Full Text PDF
Article Synopsis
  • - The study aimed to explore how a polygenic risk score (PRS) for QT prolongation (QTc-PRS) is linked to QTc intervals and sudden cardiac death (SCD) in people with and without sleep-disordered breathing (SDB) using data from the UK Biobank.
  • - Results showed that a higher QTc-PRS was connected to longer QTc intervals, with SDB significantly affecting the relationship between QTc-PRS and SCD risk; those with SDB had a much higher risk of SCD.
  • - In particular, Black participants with SDB were found to have a notably high risk of sudden cardiac death, highlighting the importance of SDB as a modifier for genetic risk factors.
View Article and Find Full Text PDF
Article Synopsis
  • Children with Down syndrome are at high risk for obstructive sleep apnea (OSA), and traditional treatments have limited effectiveness, prompting a study on the combination treatment of atomoxetine and oxybutynin (ato-oxy).
  • In a clinical trial involving children aged 6-7 years with Down syndrome and OSA, researchers assessed different doses of ato-oxy and found significant reductions in the obstructive apnea-hypopnea index compared to baseline, although no major changes in sleep quality or health-related quality of life were observed.
  • The findings suggest that ato-oxy could be an effective treatment option for OSA in this demographic, with the most common side effects being mild irritability and fatigue.
View Article and Find Full Text PDF

 Long sleep duration is associated with many health risks, particularly in older adults, but little is known about other characteristics associated with long sleep duration.  Across 5 sites, adults aged 60-80 years who reported sleeping 8-9 h ("long sleepers", n = 95) or 6-7.25 h ("average sleepers", n = 103) were assessed for two weeks using actigraphy and sleep diary.

View Article and Find Full Text PDF

A QTc risk score in patients with obstructive sleep apnea.

Sleep Med

March 2023

Department of Medicine, Division of Clinical Data Analytics and Decision Support, University of Arizona College of Medicine, Phoenix, USA.

Introduction: Patients with obstructive sleep apnea (OSA) are at risk for QTc prolongation, a known risk factor for increased mortality. The pro-QTc score can help identify individuals at increased risk for mortality associated with increased QTc however, it has not been evaluated in patients with OSA. The goal of this study was to evaluate the pro-QTc score in patients with OSA.

View Article and Find Full Text PDF

Markers of ventricular repolarization and overall mortality in sleep disordered breathing.

Sleep Med

July 2022

UAHS Center for Sleep and Circadian Sciences, University of Arizona, USA; Division of Pulmonary, Allergy, Critical Care Medicine and Sleep Medicine, University of Arizona College of Medicine, Tucson, USA.

Introduction: Variability and prolongation of ventricular repolarization - measured by changes in QT interval and QT variability are independently associated with ventricular arrhythmias, sudden death, and mortality but such studies did not examine the role of sleep-disordered breathing. We aimed to determine whether sleep-disordered breathing moderated the association between measures of ventricular repolarization and overall mortality.

Methods: Eight hundred participants were randomly selected from each of the following four groups in the Sleep Heart Health Study: mild, moderate, severe or no sleep disordered breathing (n = 200 each).

View Article and Find Full Text PDF

In critically ill COVID-19 patients, the risk of long-term neurological consequences is just beginning to be appreciated. While recent studies have identified that there is an increase in structural injury to the nervous system in critically ill COVID-19 patients, there is little known about the relationship of COVID-19 neurological damage to the systemic inflammatory diseases also observed in COVID-19 patients. The purpose of this pilot observational study was to examine the relationships between serum neurofilament light protein (NfL, a measure of neuronal injury) and co-morbid cardiovascular disease (CVD) and neurological complications in COVID-19 positive patients admitted to the intensive care unit (ICU).

View Article and Find Full Text PDF

Background Children with Fontan circulation are known to be at increased risk for neurodevelopmental problems and decreased health-related quality of life (HRQOL), but many factors that may contribute to this risk are unknown. Sleep disturbances may be one previously unidentified factor that contributes to this risk. Methods and Results We analyzed data from the Pediatric Heart Network Fontan cross-sectional study to evaluate associations between a parent or child report of sleep disturbance with reported neurodevelopmental concerns and HRQOL in 558 children with Fontan circulation.

View Article and Find Full Text PDF

The Hypoglossal Nerve Stimulation as a Novel Therapy for Treating Obstructive Sleep Apnea-A Literature Review.

Int J Environ Res Public Health

February 2021

UAHS Center for Sleep & Circadian Sciences and Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Arizona College of Medicine, Tucson, AZ 85724, USA.

Obstructive sleep apnea (OSA) is a common sleep disorder that affects all age groups and is associated with many co-morbid diseases (especially cardiovascular diseases). Continuous positive airway pressure (CPAP) is the gold standard for treating OSA. However, adherence to PAP therapy has been a major challenge with an estimated adherence between 20% and 80%.

View Article and Find Full Text PDF

Study Objectives: Prior studies have shown a morning chronotype for African Americans compared with non-Hispanic Whites, yet self-reported sleep timing is delayed in African Americans compared with Whites.

Methods: We analyzed data from the Multi-Ethnicity Study of Atherosclerosis, a multisite community-based cohort. Self-reported and actigraphic sleep timing, chronotype measured by the modified Horne-Östberg Morningness-Eveningness Questionnaire, and risk of depression measured by the Center for Epidemiologic Studies Depression scale were examined using nonparametric approaches and linear or logistic regression while comparing between African Americans and Whites and evaluating the effects of delayed sleep phase.

View Article and Find Full Text PDF

Matrix metalloproteinase-9 as a messenger in the cross talk between obstructive sleep apnea and comorbid systemic hypertension, cardiac remodeling, and ischemic stroke: a literature review.

J Clin Sleep Med

March 2021

UAHS Center for Sleep and Circadian Sciences and Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Arizona, Tucson, Arizona.

Study Objectives: OSA is a common sleep disorder. There is a strong link between sleep-related breathing disorders and cardiovascular and cerebrovascular diseases. Matrix metalloproteinase-9 (MMP-9) is a biological marker for extracellular matrix degradation, which plays a significant role in systemic hypertension, myocardial infarction and postmyocardial infarction heart failure, and ischemic stroke.

View Article and Find Full Text PDF

Patel SI, Combs D, Parthasarathy S. Sleep apnea 20/20: a 20-year cohort that continues to inform the next 20 years. .

View Article and Find Full Text PDF

Objective: Lack of control over sleep may contribute to population-level sleep disturbances, yet relatively little work has explored the degree to which an individual's sense of control over their sleep may represent an important factor.

Methods: Data from the Sleep and Healthy Activity Diet Environment and Socialization (SHADES) study, conducted in the Philadelphia area on a population comprising 1,007 individuals aged 22-60 years, was used. The BRief Index of Sleep Control (BRISC) was developed to quantify the degree to which an individual has control over their sleep.

View Article and Find Full Text PDF

Socioeconomic Inequities in Adherence to Positive Airway Pressure Therapy in Population-Level Analysis.

J Clin Med

February 2020

UAHS Center for Sleep & Circadian Sciences and Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, University of Arizona, Tucson, AZ 85724, USA.

(a) Background: In patients with sleep apnea, poor adherence to positive airway pressure (PAP) therapy has been associated with mortality. Regional studies have suggested that lower socioeconomic status is associated with worse PAP adherence but population-level data is lacking. (b) Methods: De-identified data from a nationally representative database of PAP devices was geo-linked to sociodemographic information.

View Article and Find Full Text PDF

Study Objectives: Studies have shown racial differences in circadian rhythm in African Americans when compared to non-Hispanic whites, and an association between circadian dyssynchrony and depression. We hypothesized that the prevalence of delayed sleep time is greater in African Americans when compared to whites and that delayed sleep time is associated with depression.

Methods: We analyzed data from the Sleep Heart Health Study (SHHS), a large community-based sample.

View Article and Find Full Text PDF

Herding cats and other epic challenges: Creating meaningful stakeholder engagement in community mental health research.

Asian J Psychiatr

April 2019

Department of Neuropsychiatry and Behavioral Science, University of South Carolina School of Medicine, Columbia, SC, USA; Department of Medicine, University of South Carolina, Columbia, SC, USA. Electronic address:

Stakeholder-centered approaches, that restrict patient barriers to clinical community mental health research, affect outcomes. It is suggested that a restructuring of clinical research organizational behavior and attitudes may overcome this problem. It is further advocated that consultation with an engagement of study patient stakeholders encourages their interest in the study, and is essential for successful research.

View Article and Find Full Text PDF

Is positive airway pressure therapy underutilized in chronic obstructive pulmonary disease patients?

Expert Rev Respir Med

May 2019

b Division of Pulmonary, Allergy, Critical Care & Sleep Medicine , University of Arizona - Medicine, Tucson , AZ , USA.

The role of noninvasive positive pressure ventilation (NIPPV) in patients with stable chronic obstructive pulmonary disease (COPD) in the home-setting remains controversial. Despite studies suggesting potential benefits, there is an apparent underutilization of such therapy in patients with stable COPD in a domiciliary setting. Areas covered: The reasons for underutilization in the home-setting are multifactorial, and we provide our perspective on the adequacy of scientific evidence and implementation barriers that may underlie the observed underutilization.

View Article and Find Full Text PDF

The Reply.

Am J Med

June 2018

UAHS Center for Sleep & Circadian Sciences, Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Arizona, Tucson.

View Article and Find Full Text PDF

Study Objectives: To improve sleep quality assessment using a single chest-worn sensor by extracting body acceleration and sleep position changes.

Methods: Sleep patterns of 21 participants (50.8 ± 12.

View Article and Find Full Text PDF

Background: Hospitalization of patients with chronic obstructive pulmonary disease creates a huge healthcare burden. Positive airway pressure therapy is sometimes used in patients with chronic obstructive pulmonary disease, but the possible impact on hospitalization risk remains controversial. We studied the hospitalization risk of patients with chronic obstructive pulmonary disease before and after initiation of various positive airway pressure therapies in a "real-world" bioinformatics study.

View Article and Find Full Text PDF

Unanticipated Nocturnal Oxygen Requirement during Positive Pressure Therapy for Sleep Apnea and Medical Comorbidities.

J Clin Sleep Med

January 2017

Center for Sleep Disorders and Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Arizona, Tucson, AZ.

Study Objectives: Home-based management of sleep-disordered breathing (SDB) generally excludes patients with significant medical comorbidities, but such an approach lacks scientific evidence. The current study examined whether significant medical comorbidities are associated with persistent hypoxia that requires unanticipated nocturnal O supplementation to positive airway pressure (PAP) therapy. Conceivably, in such patients, home-based management of SDB may not detect or therefore adequately treat persistent hypoxia.

View Article and Find Full Text PDF