ABSTRACT
Objective:
To evaluate the value of CT in preoperative assessment of
tricuspid valve replacement with LuX-Valve.
Methods:
145 consecutive
patients with severe
tricuspid regurgitation from October 2020 to April 2021 were selected. The multi-slice
spiral CT (256 slice and above) scans were used to
measure related
indicators. Then analyses were made to determine whether the
patients were suitable for valves replacement and to select the appropriate valve model.
Results:
49 cases were excluded after CT measurements, including 8 cases because of the values of the valve annulus and the remaining 41 due to comprehensive
indicators includes valve annulus size and shape, fixation
method and operational
safety. A total of 96 TTVR operations were performed, of which 6 were treated with
thoracic surgery, 1 had moderate valve regurgitation, and the
rest had no or mild regurgitation or paravalvular leaks. The operations showed a high success rate of 92.7%. After comprehensive
analysis, it was found that among the 89 successful
tricuspid valve replacements with LuX-Valve, 26 cases had annulus models consistent with the measurements of the diameter from tricuspid annular circumferences, while the remaining 63 had valve models larger than the diameter measurements. The results indicate that the size of
right atrium was statistically significant to the enlargement of the valve size.
Conclusion:
CT has important application value in the preoperative
screening of TTVR. For non-radial force LuX-Valve, the annulus size is not the only decisive factor, and the valve model should be comprehensively judged considering all the measurement
indicators.