Recent reports have described cases of novel thin-strut coronary stent longitudinal deformation during or after deployment and a biomechanical analysis have suggested increased susceptibility for such a complication for the platinum chromium (PtCr) coronary stent platforms . This analysis aims to assess the incidence of longitudinal stent deformation for PtCr stents in a large single centre all-comers population using quantitative angiographic analysis (QCA).
Aims: Recent reports have described cases of novel thin-strut coronary stent longitudinal deformation during or after deployment and a biomechanical analysis have suggested increased susceptibility for such a complication for the platinum chromium (PtCr) coronary stent platforms . The aim of this analysis is to assess the incidence of longitudinal stent deformation for PtCr stents in a large single centre all-comers population . Methods: Quantitative angiographic analysis (QCA) of PtCr stents deployed in consecutive all-comers patients treated in our Laboratory from January 2011 to August 2012 will be performed by an independent core laboratory. In particular QCA : nominal stent lenght ratio will be calculated for every PtCr stent. Clinical follow up with data about overall and cardiac mortality, myocardial infarction and target vessel revascularization will also be performed.
Study Type
OBSERVATIONAL
Enrollment
500
PCI with deployment of at least 1 PtCr stent
Ospedale Maggiore della Carità
Novara, Piedmont, Italy
RECRUITINGQCA : nominal stent lenght ratio
QCA measured lenght of the deployed stent divided for the nominal stent lenght, a surrogate marker for stent deformation
Time frame: 1 day
cardiovascular mortality
death from cardiac or vascular causes
Time frame: 1 year
myocardial infarction
recurring myocardial infarction (MI), according to the novel 3rd definition of MI
Time frame: 1 year
target vessel failure
any clinically-driver revascularization of the treated coronary vessel
Time frame: 1 year
Macroscopical stent deformation
severe stent deformation after deployment or other interventional manouvres (postdilation, IVUS, etc.)
Time frame: 1 day
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