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Different clinical features of aortic intramural hematoma versus dissection involving the descending thoracic aorta

Mariano Falconi1, Pablo Oberti, Juan Krauss

  • 1Division of Cardiology, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina. mariano.falconi@hospitalitaliano.org.ar

Echocardiography (Mount Kisco, N.Y.)
|September 22, 2005
PubMed

Insights

Aortic intramural hematoma (IMH) of the descending aorta can lead to complications like dissection. Medical management with close imaging and timely surgery for complications improves patient outcomes.

Area of Science:

  • Cardiovascular Medicine
  • Vascular Surgery
  • Diagnostic Imaging

Background:

  • Aortic intramural hematoma (IMH) and aortic dissection (AD) are distinct aortic emergencies.
  • The clinical course and outcomes of IMH involving the descending aorta, particularly in relation to flow communication, require further elucidation compared to AD.

Purpose of the Study:

  • To test the hypothesis that the absence of flow communication in descending thoracic aorta IMH leads to a different clinical course than AD.
  • To compare the clinical presentation, predictors of complications, treatment strategies, and outcomes between IMH and AD of the descending thoracic aorta.

Main Methods:

  • Prospective evaluation of clinical and echocardiographic data.
  • Comparison of 76 patients with AD and 27 patients with IMH of the descending thoracic aorta.
  • Analysis of follow-up data including complications, interventions, and survival rates.

Main Results:

  • No significant differences in age, gender, or initial clinical presentation between IMH and AD groups.
  • Aortic diameter >5 cm and persistent back pain were common predictors of complications in both groups.
  • Surgical treatment was more frequent in AD, with higher mortality in surgically treated AD patients compared to IMH. Medical treatment showed similar mortality rates for both conditions. IMH showed resolution/regression in 47%, aortic enlargement in 26%, and progression to AD in 13% over follow-up. Three-year survival rates were comparable (82% for IMH vs. 75% for AD).

Conclusions:

  • Descending thoracic aorta IMH has a notable rate of complications, including progression to dissection and aneurysm formation.
  • Medical management, coupled with frequent imaging surveillance and elective surgery for complications, is crucial for optimal patient care.
  • While distinct, IMH and AD share some predictors of complications, and outcomes can be managed effectively with a tailored approach.
Abstract

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