Patients with impaired baroreflexes, such as those with hypertension, heart failure, or premature infants, are susceptible to excessive autonomic responses to chemoreflex stimulation during apnea, which can lead to bradyarrhythmias, hypoxia, hypoperfusion, and sympathetic activation, potentially predisposing them to sudden death.
Robinson, Stradling, and Davies (2004b) examined the relationship between obstructive sleep apnoea/hypopnoea syndrome and hypertension.
The Institute of Medicine (US) Committee on Sleep Medicine and Research associates chronic sleep loss and sleep disorders with an increased risk of hypertension, diabetes, obesity, depression, heart attack, and stroke.
Grunstein et al. (1993) found an association between snoring and sleep apnea in men and the presence of central obesity and hypertension.
The fact that adjusting for hypertension in the Sleep Heart Health Study did not eliminate the association between obstructive sleep apnea and cardiovascular disease suggests that hypertension is not the exclusive mechanism by which obstructive sleep apnea leads to cardiovascular disease.
Sleep loss, defined as less than 7 hours per night, may have wide-ranging adverse effects on the cardiovascular, endocrine, immune, and nervous systems, including obesity, diabetes, impaired glucose tolerance, cardiovascular disease, hypertension, anxiety symptoms, depressed mood, and alcohol use.
A 2000 prospective study published in the New England Journal of Medicine established an association between sleep-disordered breathing and hypertension.
Bixler et al. (2000) investigated the association between hypertension and sleep-disordered breathing.
Bixler EO, Vgontzas AN, Lin HM, Ten Have T, Leiby BE, Vela-Bueno A, and Kales A studied the association of hypertension and sleep-disordered breathing, published in the Archives of Internal Medicine in 2000.
An observational cohort study of 1,022 individuals found that obstructive sleep apnea syndrome (defined as an apnea-hypopnea index of 5 or higher) significantly increased the risk of stroke or death from any cause, independent of other risk factors such as hypertension.
Sleep-disordered breathing has been found in a high frequency of individuals with transient ischemic attacks (McArdle et al., 2003), hypertension (Morrell et al., 1999), myocardial infarction, and heart failure (Good et al., 1996; Shamsuzzaman et al., 2003).
Beta-antagonists, which are used to treat hypertension, are commonly associated with fatigue, insomnia, nightmares, and vivid dreams.
The increased risk of heart attack associated with sleep duration is independent of a history of hypertension or diabetes, as additional adjustment for these conditions yielded only slightly lower, but still significantly elevated, relative risks.
Somers, Dyken, Mark, and Abboud observed parasympathetic hyperresponsiveness and bradyarrhythmias during apnea in patients with hypertension, as published in Clinical Autonomic Research in 1992.
The cumulative effects of sleep loss and sleep disorders are associated with an increased risk of hypertension, diabetes, obesity, depression, heart attack, and stroke.
Chronic sleep loss and sleep disorders are associated with an increased risk of hypertension, diabetes, obesity, depression, heart attack, and stroke.
W.W. Schmidt-Nowara and colleagues found an association between snoring and hypertension and other morbidity in a Hispanic-American population, as published in the Archives of Internal Medicine in 1990.
Reid (1996) reviewed new therapeutic agents for the treatment of hypertension.
Nieto et al. (2000) identified an association between sleep-disordered breathing, sleep apnea, and hypertension in a large community-based study known as the Sleep Heart Health Study.
Grunstein R., Wilcox I., Yang TS, Gould Y., and Hedner J. (1993) found an association between snoring and sleep apnea in men and central obesity and hypertension in the 'International Journal of Obesity-Related Metabolic Disorders'.
Snoring in a Hispanic-American population is associated with hypertension and other morbidity.
Hermida and Smolensky published a review on the chronotherapy of hypertension in 2004.
The Sleep Heart Health Study is a community-based multicenter study of more than 6,000 middle-aged and older adults that measured the apnea-hypopnea index via polysomnography and found that the likelihood of hypertension was greater at higher apnea-hypopnea index levels.
There is a dose-response relationship between Obstructive Sleep Apnea and hypertension, where a higher apnea-hypopnea index correlates with a greater increase in blood pressure.
Sleeping 9 hours or more is associated with elevated risks for heart attack, independent of a history of hypertension or diabetes.
A 2004 study by Robinson, Stradling, and Davies published in Thorax examined the relationship between obstructive sleep apnea/hypopnea syndrome and hypertension.
Sleep-disordered breathing and sleep apnea are associated with hypertension in community-based populations.
Sleep-disordered breathing is found in a high frequency of individuals with hypertension.
Risk factors for stroke include heart disease, hypertension, alcohol abuse, transient ischemic attacks, and possibly sleep-disordered breathing, according to Diaz and Sempere (2004).
Sleep-disordered breathing may contribute to the development of hypertension, coronary artery disease, congestive heart failure, arrhythmias, stroke, glucose intolerance, and diabetes.
A 1993 study by Grunstein, Wilcox, Yang, Gould, and Hedner found an association between snoring and sleep apnea in men and the presence of central obesity and hypertension.
Bixler, Vgontzas, Lin, Ten Have, Leiby, Vela-Bueno, and Kales found an association between hypertension and sleep-disordered breathing.
The increased risk of heart attack associated with sleep duration is independent of a history of hypertension or diabetes.
The Sleep Heart Health Study determined the apnea-hypopnea index using polysomnography and adjusted for confounding factors, including hypertension, finding that the association between obstructive sleep apnea and cardiovascular disease persisted even after adjusting for hypertension.
Obesity and hypertension develop insidiously over months and years of chronic sleep problems.
The increased risk of heart attacks associated with sleep duration in the Nurses Health Study remained significant even after adjusting for a history of hypertension or diabetes (Ayas et al., 2003).
A causal association between Obstructive Sleep Apnea and hypertension is supported by a dose-response relationship where higher apnea-hypopnea index levels correlate with greater increases in blood pressure, as reported by Peppard et al. (2000) and Nieto et al. (2000).
The Sleep Heart Health Study, published in the Journal of the American Medical Association in 2000, found an association between sleep-disordered breathing, sleep apnea, and hypertension in a large community-based study.
Systemic effects of sleep-disordered breathing, such as altered vascular tone, inflammatory mediator levels, and hormonal changes, may contribute to the development of hypertension, coronary artery disease, congestive heart failure, arrhythmias, stroke, glucose intolerance, and diabetes.