AORTIC VALVE STENOSIS INCREASES HELICAL FLOW AND FLOW COMPLEXITY: A STUDY OF INTRA-OPERATIVE CARDIAC VECTOR FLOW IMAGING

作者：Hansen Kristoffer Lindskov; Moller Sorensen Hasse; Kjaergaard Jesper; Jensen Maiken Brit; Jensen Jorgen Arendt; Nielsen Michael Bachmann

来源：Ultrasound in Medicine and Biology, 2017, 43(8): 1607-1617.

DOI：10.1016/j.ultrasmedbio.2017.03.018

• Vector flow imaging
• Ascending aorta
• Aortic valve stenosis
• Helical flow
• Flow complexity

Aortic valve stenosis alters blood flow in the ascending aorta. Using intra-operative vector flow imaging on the ascending aorta, secondary helical flow during peak systole and diastole, as well as flow complexity of primary flow during systole, were investigated in patients with normal, stenotic and replaced aortic valves. Peak systolic helical flow, diastolic helical flow and flow complexity during systole differed between the groups (p < 0.0001), and correlated to peak systolic velocity (R = 0.94, 0.87 and 0.88, respectively). The study indicates that aortic valve stenosis increases helical flow and flow complexity, which are measurable with vector flow imaging. For assessment of aortic stenosis and optimization of valve surgery, vector flow imaging may be useful.

• 出版日期2017-8