Observational studyEuropean journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery2026
Combining Ascending Aortic Diameter and Length and Their Growth Rates Improves the Prediction of Type A Aortic Dissection.
Observational study in European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesThe majority of acute type A aortic dissections (ATAADs) occur at ascending aortic dimensions and growth rates below current preventive surgery thresholds. This study aimed to investigate the risk of ATAAD based on the ascending aortic diameter, length, and their growth rates.
methodsThe ascending aortic diameters and lengths were measured using repeated pre-dissection computed tomography and magnetic resonance imaging acquired during follow-up to evaluate their growth patterns and rates prior to the ATAAD onset. Measurements and growth rates were used to develop the risk function for the ATAAD risk assessment.
resultsAscending aortic aneurysm patients (n = 116) were divided into ATAAD (n = 30) and non-ATAAD groups (n = 86). Almost half of the ATAAD patients (46.7%) did not exceed the current preventive surgery thresholds based on the dimensions. A diameter growth rate of 3 mm/year was extremely rare (2.6%). The risk function was introduced in this study, and it could be used to predict the 5-year risk of ATAAD with excellent confidence (area under the curve [AUC] value of 0.83 (95% CI [0.54-0.98])).
conclusionsThe combination of ascending aortic diameter and length and their growth rates offers a valuable tool for assessing the risk of an ATAAD. Almost half of the ATAAD patients fall below the established thresholds when assessed using only ascending aortic dimensions. These findings suggest that preventive surgery thresholds may benefit from including all four parameters: ascending aortic diameter and length and their growth rates. CLINICAL REGISTRATION NUMBER: DilAo-Trial ClinicalTrials.gov ID 5063566.
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