Limitations
The present findings are limited by several key constraints which should
be considered when interpreting the results. Firstly, all the studies
were retrospective, and the main results are based on non-randomized
observational studies, which impose a considerable selection bias.
Secondly, due to the lack of a standard reporting schema for total arch
replacement using FET, some important data are missing, which
incapacitates us to perform subgroup analysis.