Document Detail

The IRAD Classification System for Characterizing Survival after Aortic Dissection.
MedLine Citation:
PMID:  23885677     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: The classification of aortic dissection into acute (<14 days from symptom onset) versus chronic (≥14 days) is based on survival estimates of patients treated decades before modern diagnostic and treatment modalities were available. A new classification of aortic dissection in the current era may provide clinicians with a more precise method of characterizing the interaction of time, dissection location, and treatment type with survival.
METHODS: We developed separate Kaplan-Meier survival curves for Type A and Type B aortic dissection using data from the International Registry of Aortic Dissection (IRAD). Daily survival was stratified based on type of therapy provided: medical therapy alone (medical), nonsurgical intervention plus medical therapy (endovascular), and open surgery plus medical therapy (surgical). The log-rank statistic was used to compare the survival curves of each management type within Type A and Type B aortic dissection.
RESULTS: There were 1815 patients included, 67.3% male with mean age 62.0 ± 14.2 years. When survival curves were constructed, 4 distinct time periods were noted: hyperacute (symptom onset to 24 hours), acute (2-7 days), subacute (8-30 days), and chronic (>30 days). Overall survival was progressively lower through the 4 time periods.
CONCLUSIONS: This IRAD classification system can provide clinicians with a more robust method of characterizing survival after aortic dissection over time than previous methods. This system will be useful for treating patients, counseling patients and families, and studying new diagnostic and treatment methods.
Anna M Booher; Eric M Isselbacher; Christoph A Nienaber; Santi Trimarchi; Arturo Evangelista; Daniel G Montgomery; James B Froehlich; Marek P Ehrlich; Jae K Oh; James L Januzzi; Patrick O'Gara; Thoralf M Sundt; Kevin M Harris; Eduardo Bossone; Reed E Pyeritz; Kim A Eagle;
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of medicine     Volume:  126     ISSN:  1555-7162     ISO Abbreviation:  Am. J. Med.     Publication Date:  2013 Aug 
Date Detail:
Created Date:  2013-07-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0267200     Medline TA:  Am J Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  730.e19-24     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2013 Elsevier Inc. All rights reserved.
Department of Internal Medicine, University of Michigan, Ann Arbor. Electronic address:
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