TY - JOUR
T1 - Unlocking the non-invasive assessment of conduit and reservoir function in the aorta
T2 - The obstructive descending aorta in HLHS
AU - De Vecchi, Adelaide
AU - Faraci, Alessandro
AU - Cardoso Pires Timoteo Fernandes, Joao Filipe
AU - Marlevi, David
AU - Bellsham-Revell, Hannah R.
AU - Hussain, Tarique
AU - Laji, Nidhin
AU - Ruijsink, Bram
AU - Wong, James
AU - Razavi, Reza
AU - Anderson, David
AU - Salih, Caner
AU - Pushparajah, Kuberan
AU - Nordsletten, David
AU - Lamata de la Orden, Pablo
N1 - Funding Information:
This work was supported by Action Medical Research project grant GN2401, the Wellcome/EPSRC Centre for Medical Engineering (WT 203,148/Z/16/Z), by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 764738 and by the National Institute for Health Research (NIHR) Cardiovascular MedTech Co-operative. PL holds a Wellcome Trust Senior Research Fellowship (209,450/Z/17/Z).
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/10
Y1 - 2022/10
N2 - Aortic surgeries in congenital conditions, such as hypoplastic left heart syndrome (HLHS), aim to restore and maintain the conduit and reservoir functions of the aorta. We proposed a method to assess these two functions based on 4D flow MRI, and we applied it to study the aorta in pre-Fontan HLHS. Ten pre-Fontan HLHS patients and six age-matched controls were studied to derive the advective pressure difference and viscous dissipation for conduit function, and pulse wave velocity and elastic modulus for reservoir function. The reconstructed neo-aorta in HLHS subjects achieved a good conduit function at a cost of an impaired reservoir function (69.7% increase of elastic modulus). The native descending HLHS aorta displayed enhanced reservoir (elastic modulus being 18.4% smaller) but impaired conduit function (three-fold increase in peak advection). A non-invasive and comprehensive assessment of aortic conduit and reservoir functions is feasible and has potentially clinical relevance in congenital vascular conditions. Graphical abstract: [Figure not available: see fulltext.].
AB - Aortic surgeries in congenital conditions, such as hypoplastic left heart syndrome (HLHS), aim to restore and maintain the conduit and reservoir functions of the aorta. We proposed a method to assess these two functions based on 4D flow MRI, and we applied it to study the aorta in pre-Fontan HLHS. Ten pre-Fontan HLHS patients and six age-matched controls were studied to derive the advective pressure difference and viscous dissipation for conduit function, and pulse wave velocity and elastic modulus for reservoir function. The reconstructed neo-aorta in HLHS subjects achieved a good conduit function at a cost of an impaired reservoir function (69.7% increase of elastic modulus). The native descending HLHS aorta displayed enhanced reservoir (elastic modulus being 18.4% smaller) but impaired conduit function (three-fold increase in peak advection). A non-invasive and comprehensive assessment of aortic conduit and reservoir functions is feasible and has potentially clinical relevance in congenital vascular conditions. Graphical abstract: [Figure not available: see fulltext.].
UR - http://www.scopus.com/inward/record.url?scp=85125085361&partnerID=8YFLogxK
U2 - 10.1007/s12265-022-10221-4
DO - 10.1007/s12265-022-10221-4
M3 - Article
SN - 1937-5387
VL - 15
SP - 1075
EP - 1085
JO - Journal of cardiovascular translational research
JF - Journal of cardiovascular translational research
IS - 5
ER -