High versus low-pressure balloon inflation during multilinktrade mark stent implantation: acute and long-term angiographic results.
We compared the impact of low and high-pressure balloon inflation on acute and late angiographic results of Multilink stent. Low-pressure balloon inflation (9.5 +/- 1.9 atm) was used in 43 stents and high pressure (17.1 +/- 1.5 atm) in 44. A larger immediate luminal gain was achieved in stents with high-pressure balloon inflation (1.80 +/- 0.26 vs. 1.47 +/- 0.62; P = 0.002), resulting in a larger mean diameter in this group (2.71 +/- 0.37 vs. 2.48 +/- 0.47; P = 0.017). At follow-up, a larger luminal diameter was achieved in the high pressure group (1.93 +/- 0.72 vs. 1.45 +/- 0.66; P = 0.002) and a trend to a lower rate of angiographic restenosis (15% vs. 38%, P = 0.08).
Department of Cardiology, Cardiac Catheterization Laboratory, Instituto do Coração, University of São Paulo, Brazil. acaixeta@uol.som.br
A M
AM
Caixeta
F S
FS
Brito
M
M
Rati
M A
MA
Perin
P L
PL
da Luz
J A
JA
Ramires
J A
JA
Ambrose
E E
EE
Martinez
D000208:Acute Disease; D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation*; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011312:Pressure; D012189:Retrospective Studies; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome