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Examining the relationship between triggering activities and the circadian distribution of acute aortic dissection

Hyeon Min Ryu1, Ju Hwan Lee, Yong Seop Kwon

  • 1Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea.

Korean Circulation Journal
|January 11, 2011
PubMed

Insights

Most acute aortic dissection (AAD) episodes occur during waking hours and are linked to physical or mental activities. However, no significant differences in triggering activities or circadian patterns were found across diagnostic or anatomical classifications.

Area of Science:

  • Cardiovascular Medicine
  • Medical Research
  • Aortic Dissection Studies

Background:

  • Limited data exist on triggering activities and circadian patterns in acute aortic dissection (AAD).
  • Understanding these factors is crucial for diagnostic and anatomical classification of AAD.
  • This study investigates the relationship between AAD onset, triggering activities, and circadian distribution.

Purpose of the Study:

  • To examine the relationship between triggering activities and circadian distribution at AAD onset.
  • To analyze these relationships based on diagnostic (intramural hematoma vs. non-IMH) and anatomical (Stanford type A vs. type B) classifications.
  • To identify potential differences in AAD onset patterns across patient subgroups.

Main Methods:

  • A cohort of 166 patients with AAD was analyzed.
  • Patients were classified into intramural hematoma (IMH) and non-IMH groups.
  • Patients were also classified into Stanford type A (AAD-A) and type B (AAD-B) groups.
  • Circadian distribution was assessed across four 6-hour periods: night, morning, afternoon, and evening.

Main Results:

  • 72% of AAD episodes were associated with physical (53%) or mental (19%) activities.
  • One-third of AAD cases occurred in the afternoon; only 12% occurred at night.
  • No significant differences in triggering activities or circadian distribution were observed between diagnostic or anatomical subgroups.
  • Waking hours (morning, afternoon, evening) correlated with triggering activities (p=0.003), particularly in non-IMH and AAD-B cases.

Conclusions:

  • Findings suggest potential differences in the relationship between triggering activities and circadian distribution of AAD onset.
  • These differences may vary according to diagnostic and anatomical classification.
  • Further research is needed to fully elucidate these complex relationships in AAD.
Abstract

Keywords:
AortaCircadian rhythmDissection

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