Early Safety and Efficacy of Sapien 3 20 mm Transcatheter Heart Valve Implantation in Small Japanese Body Size
Background: Transcatheter aortic valve implantation (TAVI) is effective in treating severe aortic stenosis in inoperable or high-risk surgical patients, however, the little is known about outcomes after Sapien 3 20 mm transcatheter heart valve (THV) implantation. The purpose of this study was to investigate the short term outcomes of Sapien 3 20 mm THV implantation in Japanese people with a small body size.
Methods: We retrospectively collected the hospital records of consecutive patients who underwent TAVI using the Sapien 3 20 mm THV between October 2016 and March 2017. Clinical and echocardiographic data from before and one week after TAVI were collected.
Results: Six Japanese patients (all female, mean age 89 ± 5 years, body surface area [BSA] 1.29 ± 0.16m2) received a Sapien 3 20 mm THV. All the procedures were feasible and successful, and the 30-day mortality rate was 0%. The functional class and the echocardiographic findings significantly improved (aortic valve area, 0.5 ± 0.1 cm2 to 0.8 ± 0.1cm2; mean pressure gradient, 55 ± 15 mmHg to 19 ± 7 mmHg;
P = .043, respectively). However, the values of the indexed effective orifice area in all patients after Sapien 3 20 mm THV implantation were less than 0.85 cm2/m2, suggesting prosthesis-patient mismatch (PPM).
Conclusions: The implantation of a Sapien 3 20 mm THV was safe and effective in high surgical risk elderly Japanese patients with a small body size. PPM after Sapien 3 20mm THV may be prevalent among Asians with small body sizes. Careful clinical follow-up will be necessary after Sapien 3 20 mm THV implantation.
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