Comparison of the self-expanding Radius stent and the balloon-expandable Multilink stent for elective treatment of coronary stenoses: a serial analysis by intravascular ultrasound.
We compared the outcome of the self-expanding Radius stent and the balloon-expandable Multilink stent serially by angiography and intravascular ultrasound. Successful stent deployment was achieved in 66 lesions of 56 stable angina patients (34 lesions with Radius stents and 32 lesions with Multilink stents). At follow-up, there were no significant differences in minimal lumen diameter or percent diameter stenosis between the groups, nor in restenosis rates, although the Radius stent group rate was slightly lower (23.5% vs. 31.3%). In the Radius stent group, stent cross-sectional area (CSA) increased gradually after implantation until the 6-month follow-up (8.37 +/- 1.83 to 10.16 +/- 2.59 mm(2); n = 15), giving a larger CSA (P = 0.03) than the Multilink stent group, which decreased (9.00 +/- 2.05 to 8.27 +/- 2.15 mm(2); n = 17). The lumen CSA was also slightly larger (6.82 +/- 3.06 vs. 5.84 +/- 1.85 mm(2); P = 0.29) in the Radius stent group. These findings indicated that the Radius stent enlarged progressively after implantation, which might be useful for prevention of restenosis.
Yu
Zai-Xin
ZX
Department of Cardiology, Xiangya Affiliated Hospital of Hunan Medical University, Hunan, China.
Tamai
Hideo
H
Kyo
Eisho
E
Kosuga
Kunihiko
K
Hata
Tatsuhiko
T
Okada
Masaharu
M
Nakamura
Takuji
T
Komori
Hidenori
H
Tsuji
Takafumi
T
Takeda
Shinsaku
S
Motohara
Seiichiro
S
Uehata
Hiromu
H
D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D019917:Blood Vessel Prosthesis Implantation; D017023:Coronary Angiography; D023903:Coronary Restenosis / Q000209:etiology / Q000628:therapy; D023921:Coronary Stenosis / Q000150:complications / Q000401:mortality / Q000628:therapy*; D018450:Disease Progression; D017558:Elective Surgical Procedures; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011884:Radius / Q000000981:diagnostic imaging / Q000601:surgery*; D012086:Reoperation; D012307:Risk Factors; D015607:Stents; D016019:Survival Analysis; D013997:Time Factors; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional