Proximal aorta longitudinal strain predicts aortic root dilation rate and aortic events in Marfan syndrome

Andrea Guala, Gisela Teixidó-Tura, Jose Rodríguez-Palomares, Aroa Ruiz-Muñoz, Lydia Dux-Santoy, Nicolas Villalva, Chiara Granato, Laura Galian, Laura Gutiérrez, Teresa González-Alujas, Violeta Sanchez, Alberto Forteza, David García-Dorado, Artur Evangelista

Research output: Contribution to journalArticleResearch

17 Citations (Scopus)

Abstract

© The Author(s) 2019. Aims: Life expectancy in Marfan syndrome patients has improved thanks to the early detection of aortic dilation and prophylactic aortic root surgery. Current international clinical guidelines support the use of aortic root diameter as a predictor of complications. However, other imaging markers are needed to improve risk stratification. This study aim to ascertain whether proximal aorta longitudinal and circumferential strain and distensibility assessed by cardiac magnetic resonance (CMR) predict the aortic root dilation rate and aortic events in Marfan syndrome. Methods and results: One hundred and seventeen Marfan patients with no previous aortic dissection, cardiac/aortic surgery, or moderate/severe aortic regurgitation were prospectively included in a multicentre protocol of clinical and imaging followup. At baseline, CMR was performed and proximal aorta longitudinal strain and ascending aorta circumferential strain and distensibility were obtained. During follow-up (85.7 [75.0-93.2] months), the annual growth rate of aortic root diameter was 0.62 ± 0.65 mm/year. Fifteen patients underwent elective surgical aortic root replacement and four presented aortic dissection. Once corrected for baseline clinical and demographic characteristics and aortic root diameter, proximal aorta longitudinal strain, but not circumferential strain and distensibility, was an independent predictor of the aortic root diameter growth rate (P = 0.001, P = 0.823, and P = 0.997, respectively), z-score growth rate (P = 0.013, P = 0.672, and P = 0.680, respectively), and aortic events (P = 0.023, P = 0.096, and P = 0.237, respectively). Conclusion: Proximal aorta longitudinal strain is independently related to the aortic root dilation rate and aortic events in addition to aortic root diameter, clinical risk factors, and demographic characteristics in Marfan syndrome patients.
Original languageEnglish
Pages (from-to)2047-2054A
JournalEuropean Heart Journal
Volume40
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Aortic dilation
  • Aortic strain
  • Longitudinal strain
  • Marfan syndrome

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