Publications by authors named "Jeongok Logan"

Background: Blood pressure variability (BPV) is a prognostic marker of cardiovascular disease (CVD). Sleep is recognized as a significant risk factor for CVD; however, little is known about the relationship between sleep characteristics and BPV.

Objective: In this systematic review, we aimed to (1) describe methods used to measure BPV and sleep and (2) describe the current evidence in the literature on the association between sleep and BPV.

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Article Synopsis
  • Obstructive sleep apnea (OSA) and hypertension significantly increase the risk of cardiovascular disease and mortality, and studies show they are interconnected.* -
  • This review examines how OSA impacts blood pressure, including its effects on nocturnal blood pressure, response to CPAP treatment, and its contribution to blood pressure variability and cardiac remodeling.* -
  • The article also highlights the influence of ethnicity and social determinants on OSA, emphasizing disparities in blood pressure control and cardiovascular health within Asian populations.*
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Background: Morning blood pressure surge (MBPS) has been recognized as an independent predictor of cardiovascular disease events. Psychological distress, including anxiety, depression, and perceived stress, and behavioral risk factors, such as poor sleep quality, have been associated with increased MBPS. Elevations in sympathetic activity induced by forced awakening may also contribute to further increases in MBPS.

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Background: Poor sleep quality can cause an increase in morning blood pressure surge (MBPS), an independent risk factor of cardiovascular disease (CVD) events. Awakening induced by external factors such as alarm clocks, may also contribute to increased MBPS.

Objectives: To (1) compare the MBPS and sleep quality parameters between natural and forced awakenings and (2) examine the potential impact of forced awakening on MBPS, independent of sleep quality.

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Family caregivers are at high risk of psychological distress and low sleep efficiency resulting from their caregiving responsibilities. Although psychological symptoms are associated with sleep efficiency, there is limited knowledge about the association of psychological distress with variations in sleep efficiency. We aimed to characterize the short- and long-term patterns of caregivers' sleep efficiency using Markov chain models and compare these patterns between groups with high and low psychological symptoms (i.

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Objective: Caregiving demands may influence caregivers' sleep duration and quality, which are essential for optimal health. We aimed to examine the association between caregiving status and sleep deficiency (i.e.

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Background: Pain is often underreported and under-treated in older adults with dementia. The role of family caregivers (FCGs) in managing pain for their loved ones with dementia living in community has been significantly burdensome. Surprisingly, research has not delved into the experiences of FCGs' concerning pain management in this context.

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Despite the prognostic value of arterial stiffness (AS) and pulsatile hemodynamics (PH) for cardiovascular morbidity and mortality, epigenetic modifications that contribute to AS/PH remain unknown. To gain a better understanding of the link between epigenetics (DNA methylation) and AS/PH, we examined the relationship of eight measures of AS/PH with CpG sites and co-methylated regions using multi-ancestry participants from Trans-Omics for Precision Medicine (TOPMed) Multi-Ethnic Study of Atherosclerosis (MESA) with sample sizes ranging from 438 to 874. Epigenome-wide association analysis identified one genome-wide significant CpG (cg20711926-CYP1B1) associated with aortic augmentation index (AIx).

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Despite the prognostic value of arterial stiffness (AS) and pulsatile hemodynamics (PH) for cardiovascular morbidity and mortality, epigenetic modifications that contribute to AS/PH remain unknown. To gain a better understanding of the link between epigenetics (DNA methylation) and AS/PH, we examined the relationship of eight measures of AS/PH with CpG sites and co-methylated regions using multi-ancestry participants from Trans-Omics for Precision Medicine (TOPMed) Multi-Ethnic Study of Atherosclerosis (MESA) with sample sizes ranging from 438 to 874. Epigenome-wide association analysis identified one genome-wide significant CpG (cg20711926-) associated with aortic augmentation index (AIx).

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Background: Practicing self-care is a requisite for nurses as they face the extreme physical, mental, and emotional challenges presented by the pandemic era. This study aimed to examine factors that contribute to self-care-self-regulation (SCSR) and investigate the mediation effect of psychological and physical health in the relationship between work stress and SCSR among registered nurses in the United States.

Materials And Methods: This cross-sectional study was conducted on the data collected from 386 registered nurses who completed an online survey over a 3-week period during the COVID-19 pandemic (April 19 to May 6, 2020).

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Background: A growing body of research highlights the negative impact of caregiving on cardiovascular disease (CVD) risk.

Objectives: This study aimed to examine associations of psychological symptoms and sleep quality with 24-hour blood pressure variability (BPV), which is an independent predictor of CVD, among family caregivers of community-dwelling individuals with chronic illness.

Methods: For this cross-sectional study, we assessed caregiving burden and depressive symptoms using questionnaires and 7-day sleep quality (i.

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Daytime sleepiness is highly prevalent in middle-aged adults and has a detrimental impact on their quality of life. Our study examined the psychological and behavioral determinants of daytime sleepiness among adults aged 35 to 64 years. The main variables of interest were psychological factors (perceived stress and anxiety), physical activity factors (moderate-to-vigorous physical activity and sedentary behaviors), and dietary factors (fat, sugar, fruit, and vegetable intake).

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Background: Cardiovascular (CV) risk factors can be transmitted from mothers to their children. However, it is challenging to measure and identify subclinical CV risk in young children using traditional CV risk methods and metrics.

Objective: The purpose of this study was to determine the feasibility of recruiting mother-child dyads and measuring arterial stiffness (pulse wave velocity, augmentation index/pressure), blood pressure (BP), BP circadian pattern, specifically nocturnal BP dipping, and CV health metrics in mothers and in children aged 1 to 5 years.

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Introduction: Most previous studies have examined the effects of acute psychological stress in humans based on select gene panels. The genomic approach may help identify novel genes that underline biological mechanisms of acute psychological stress responses.

Objective: This exploratory study aimed to investigate genome-wide transcriptional activity changes in response to acute psychological stress.

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Chinese Americans comprise the largest Asian subgroup in the U.S. Yet, little research has focused on the well-being of this population.

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We investigated the association between perceived role overload and physical symptom experience, and the potential moderating effect of social support among caregivers of older adults. We analyzed data of 1,471 caregivers obtained from the 2017 National Study of Caregiving. In the survey, participants were assessed for physical symptoms (pain, limited leg strength, and low energy), symptom-related activity limitations, perceived role overload, and informal/formal support sources.

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Background: Obstructive sleep apnoea (OSA) episode related blood pressure (BP) surge may mediate the association of OSA with cardiovascular disease. However, BP is not measured during a clinical sleep study.

Method: We tested the feasibility of incorporating the Caretaker physiological monitor, which utilizes a novel continuous beat-to-beat (b-b) BP monitoring technology, into polysomnography (PSG) and aimed to characterize BP surges related to obstructive respiratory events.

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Contemplative practices promote well-being, work engagement and resilience among health care providers. We examined the impact of The Pause, a brief contemplative intervention, on health care providers' physiological stress response. Participants were randomly assigned to either The Pause or the control group.

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Background: Arterial stiffness and increased blood pressure variability (BPV) are important subclinical cardiovascular diseases (CVDs). Evidence is accumulating that poor sleep is associated with subclinical CVDs. The purpose of our study was to investigate how sleep was related to arterial stiffness and BPV.

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This study aimed to assess the overall level of sleep quality among female staff nurses in the United States during the early COVID-19 pandemic. It also aimed to examine factors associated with sleep quality and its seven subcomponents: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbance, use of sleeping medications, and daytime dysfunction. A descriptive, correlational, and cross-sectional study design was used.

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Background: Family caregivers experience psychological distress or physical strain that may lead to an increased risk of cardiovascular disease (CVD) morbidity and mortality.

Objective: This systematic review aimed to describe the current evidence and gaps in the literature on measures used to assess CVD outcomes in family caregivers, the association of caregiving with CVD incidence/risk outcomes, and associated factors in family caregivers of patients with chronic disease.

Methods: Medline, PubMed, CINAHL, Web of Science, and Google Scholar were searched for English-language, peer-reviewed studies published from 2008 to 2020 that examined CVD incidence and risk among family caregivers of adults with chronic conditions.

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Article Synopsis
  • The study compares objective sleep quality in patients undergoing sleep studies in a lab setting, focusing on total sleep time (TST) and sleep efficiency (SE).
  • Out of 4957 patients, 11% experienced poor sleep based on TST, and 8% based on SE, with factors like older age, male sex, and severe obstructive sleep apnea increasing the risk for poor sleep.
  • Antidepressant use was noted to decrease the likelihood of short sleep, highlighting the importance of understanding demographic factors in assessing sleep quality during polysomnography.
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Background: Despite remarkable achievements in ensuring health equity, racial/ethnic disparities in sleep still persist and are emerging as a major area of concern. Accumulating evidence has not yet been well characterized from a broad perspective. We conducted a scoping review of studies on sleep disparities by race/ethnicity to summarize characteristics of existing studies and identify evidence gaps.

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Visit-to-visit blood pressure (BP) variability (BPV) is an independent risk factor of cardiovascular disease (CVD). Sleep architecture characterizes the distribution of different stages of sleep and may be important in CVD development. We examined the association between visit-to-visit BPV and sleep architecture using in-lab polysomnographic data from 3,565 patients referred to an academic sleep center.

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Scientific investigations in the past few decades have supported the important role of sleep in various domains of health. Sleep apnea is a highly prevalent yet underdiagnosed sleep disorder representing a valid cardiovascular risk factor, particularly for hypertension. While several studies have demonstrated the benefits of sleep apnea treatment on subclinical cardiovascular measures, there is a paucity of studies proving reduction of cardiovascular events and mortality.

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