Publications by authors named "Kayoko Kozuma"
Impact of coronary bifurcation angle on stent malapposition in a randomized comparison between proximal optimization technique followed by side branch dilatation and kissing balloon inflation.
Int J Cardiol Heart Vasc
October 2023
Article Synopsis
- The study examines how the angle of coronary bifurcation (BA) affects incomplete stent apposition (ISA) after crossover stenting and side branch interventions in patients.
- It compares two techniques: proximal optimization technique followed by short balloon dilation (POT-SBD) and the final kissing balloon technique (KBT), finding that major ISA is more common in the POT-SBD group.
- The research concludes that a wider bifurcation angle increases the risk of major ISA after the POT, while a short bifurcation angle (less than 60°) is linked to lower rates of ISA when treated optimally.
Article Synopsis
- The study compared the effectiveness of the proximal optimization technique (POT) and the kissing balloon technique (KBT) in preventing coronary bifurcation stent failure (BSF) during cross-over stenting in a multicenter trial involving 120 patients.
- The results showed similar rates of BSF between the POT and KBT groups, with both techniques having some risk factors associated with poor outcomes identified through imaging analysis.
- Ultimately, POT did not demonstrate a clear advantage in improving BSF rates, and insufficient expansion of the bifurcation core was linked to increased risk of stent failure.
Article Synopsis
- This study aimed to compare the effectiveness of the proximal optimisation technique (POT) versus the conventional kissing balloon technique (KBT) for treating bifurcation lesions in patients using advanced imaging (OCT).
- A total of 120 patients were randomly assigned to either POT or KBT, with the analysis focusing on the rate of malapposed stent struts after treatment.
- Results showed no significant differences in stent apposition rates between the two techniques, though POT required more additional treatments; both methods yielded good long-term clinical outcomes.
Background: Increased body mass index (BMI) is a major risk factor for heart failure with preserved ejection fraction (HFpEF), and HFpEF is more prevalent in elderly females than males. We hypothesized that there may be gender differences in the association between BMI and echocardiographic left ventricular (LV) diastolic parameters.
Methods: We enrolled 456 subjects (243 males) without overt cardiac diseases, all of whom underwent a health checkup.
Multivariable prediction model to estimate the probability of restenosis at proximal edge after 2nd-generation drug-eluting-stent implantation: development and internal validation using a quantitative coronary angiography from the post-marketing surveillance studies of everolimus-eluting stent in Japan.
Cardiovasc Interv Ther
April 2021
Edge restenosis has still been reported after second-generation drug-eluting stent (DES) implantation. It was more likely attributable to post-procedural angiographic results than to the patient's background. The aim of this study was to develop and internally validate a prediction model for restenosis in proximal edge after 2nd-generation DES stent implantation using angiographic data.
View Article and Find Full Text PDFEdge restenosis has gained attention as a main cause of restenosis after first-generation drug-eluting stent (DES) implantation. The aim of this study was to assess the incidence of edge restenosis and identify the predictors of edge restenosis after second-generation DES implantation. Data were obtained from several postmarketing surveillance (PMS) studies on a cobalt-chromium everolimus-eluting stent (CoCr-EES; Xience V/PROMUS, Xience Prime, Xience Prime SV, and Xience Expedition SV), a second-generation DES, in Japan.
View Article and Find Full Text PDFThe current version (ver. 7.3) of the popular quantitative coronary analysis system QAngio XA (Medis Medical Imaging System BV, Leiden, the Netherlands) is widely used without evaluating the agreement between the current and older versions in relation to a change of algorithms.
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