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Related Experiment Videos

Obstructive sleep apnea and thoracic aorta dissection.

Gabriel Sampol1, Odile Romero, Armando Salas

  • 1Respiratory Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain. gsampol@vhebron.net

American Journal of Respiratory and Critical Care Medicine
|August 9, 2003
PubMed
Summary

Obstructive sleep apnea syndrome (OSAS) is linked to aortic dissection. Patients with aortic dissection had significantly higher and more severe OSAS, suggesting sleep studies are crucial for management.

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Area of Science:

  • Cardiology
  • Sleep Medicine
  • Pulmonology

Background:

  • Obstructive sleep apnea syndrome (OSAS) is associated with arterial hypertension, a key risk factor for aortic dissection.
  • Upper airway obstruction during sleep causes significant increases in aortic transmural pressure.

Purpose of the Study:

  • To investigate the association between thoracic aorta dissection and OSAS.
  • To determine if OSAS is a prevalent comorbidity in patients with aortic dissection.

Main Methods:

  • A comparative study involving 19 patients with thoracic aorta dissection and 19 hypertensive controls.
  • Clinical questionnaires and polysomnography were used to assess sleep patterns and apnea severity.
  • Patients were matched for age, sex, and body mass index.

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Main Results:

  • Snoring and non-refreshing sleep were common in both groups.
  • A high prevalence of OSAS (apnea-hypopnea index > 5/hour) was observed in 68% of patients in both groups.
  • Patients with aortic dissection exhibited significantly higher apnea-hypopnea indices (28.0 vs. 11.1, p=0.032) and a greater proportion of severe OSAS (AHI > 30) (7 vs. 1, p=0.042).

Conclusions:

  • Thoracic aorta dissection patients have a high prevalence of undiagnosed, often severe, OSAS.
  • Sleep studies should be considered in the clinical management of aortic dissection patients presenting with OSAS symptoms.
  • Further research is needed to incorporate OSAS diagnosis as a prognostic variable in aortic dissection follow-up.