Aortic Cross-Sectional Area/Height Ratio and Outcomes in Patients with Bicuspid Aortic Valve and a Dilated Ascending Aorta

Ahmad Masri, Vidyasagar Kalahasti, Lars G. Svensson, Alaa Alashi, Paul Schoenhagen, Eric E. Roselli, Douglas R. Johnston, L. Leonardo Rodriguez, Brian P. Griffin, Milind Y. Desai*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Background - In patients with bicuspid aortic valve and dilated proximal ascending aorta, we sought to assess (1) factors associated with increased longer-term cardiovascular mortality and (2) incremental prognostic use of indexing aortic root to patient height. Methods and Results - We studied 969 consecutive bicuspid aortic valve patients (50±13 years; 87% men) with proximal aorta ≥4 cm, who also had a gated contrast-enhanced thoracic computed tomography or magnetic resonance angiography. A ratio of ascending aortic area/height was calculated on tomography, and ≥10 cm 2 /m was considered abnormal, as previously reported. Society of Thoracic Surgeons score and cardiovascular death were recorded. Greater than or equal to III+ aortic regurgitation and severe aortic stenosis were seen in 37% and 10%, respectively. Society of Thoracic Surgeons score and right ventricular systolic pressure were 2±3 and 15±16 mm Hg, respectively. Abnormal ascending aortic area/height ratio was noted in 33%; 44% underwent ascending aortic surgery at 34 days. At 10.8 years (interquartile range, 9.6-12.3), 82 (9%) died (0.4% in-hospital postoperative mortality). On multivariable Cox survival analysis, ascending aortic area/height ratio (hazard ratio, 2; 95% confidence interval, 1.20-3.35) was associated with cardiovascular death, whereas aortic surgery (hazard ratio, 0.46; confidence interval, 0.26-0.80) was associated with improved survival (both P<0.01). Of the 405 patients with ascending aortic diameter of 4.5 to 5.5 cm, 64% had an abnormal ascending aortic area/height ratio, and 70% deaths occurred in patients with an abnormal ratio. Conclusions - In bicuspid aortic valve patients with dilated proximal ascending aorta, ascending aortic area/height ratio was independently associated with cardiovascular death.

Original languageEnglish (US)
Article numbere006249
JournalCirculation: Cardiovascular Imaging
Volume10
Issue number6
DOIs
StatePublished - Jun 1 2017

Keywords

  • aneurysm
  • aorta
  • blood pressure
  • heart valve diseases
  • magnetic resonance angiography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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