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Related Concept Videos

Alterations in Blood Pressure01:30

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
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A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice
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Sleep and hypertension.

David A Calhoun1, Susan M Harding

  • 1Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL 35294-1150, USA. dcalhoun@uab.edu

Chest
|August 5, 2010
PubMed
Summary
This summary is machine-generated.

Elevated blood pressure (BP), especially at night, increases cardiovascular risk. Sleep disorders like obstructive sleep apnea (OSA) are linked to hypertension, though continuous positive airway pressure (CPAP) treatment shows modest BP effects.

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Area of Science:

  • Cardiology
  • Sleep Medicine
  • Hypertension Research

Background:

  • Ambulatory BP monitoring reveals that even minor BP elevations, particularly nocturnal levels, significantly correlate with increased cardiovascular morbidity and mortality.
  • Sleep-related disorders are increasingly recognized for their substantial impact on cardiovascular risk due to their association with elevated blood pressure.

Purpose of the Study:

  • To explore the relationship between sleep disorders and hypertension.
  • To review the evidence linking sleep deprivation, insomnia, restless legs syndrome, and obstructive sleep apnea (OSA) to hypertension.
  • To evaluate the efficacy of continuous positive airway pressure (CPAP) in managing hypertension in OSA patients.

Main Methods:

  • Review of observational studies correlating sleep disorders with hypertension incidence and severity.
  • Analysis of prospective studies investigating the link between OSA and incident hypertension.
  • Examination of intervention trials using CPAP for hypertension management in OSA patients.

Main Results:

  • Sleep deprivation and insomnia are associated with increased hypertension incidence and prevalence.
  • Restless legs syndrome-related sleep disruption elevates the likelihood of hypertension.
  • Observational data show a strong correlation between OSA severity and hypertension risk; however, CPAP intervention trials yield modest and inconsistent BP reductions, with greater benefit in highly adherent patients.

Conclusions:

  • Sleep disorders, particularly obstructive sleep apnea, are significant risk factors for hypertension.
  • The antihypertensive effects of CPAP in OSA patients are modest and inconsistent, necessitating further research.
  • Prospective studies are required to reconcile the strong observational link between OSA and hypertension with the limited findings from CPAP intervention trials.