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JOURNAL ARTICLE

Risk of contrast-induced nephropathy in patients undergoing complex percutaneous coronary intervention

Lorenzo Azzalini, Enrico Poletti, Francesca Lombardo, Alessandra Laricchia, Alessandro Beneduce, Silvia Moscardelli, Barbara Bellini, Davide Maccagni, Alberto Cappelletti, Marco B Ancona, Mauro Carlino, Alaide Chieffo, Antonio Colombo, Matteo Montorfano
International Journal of Cardiology 2019 April 14
31005417

BACKGROUND: Complex percutaneous coronary intervention (PCI) is associated with increased procedural challenges and high contrast load. We aimed to evaluate the association between complex PCI and contrast-induced nephropathy (CIN).

METHODS: This single-center retrospective study included all-comers undergoing PCI between January 2012 and December 2016. Complex PCI was defined as a procedure with ≥1 of the following characteristics: 3 vessels treated, ≥3 stents implanted, two-stent bifurcation intervention, total stent length >60mm, PCI on a chronic total occlusion, saphenous vein graft, or left main, protected PCI, use of rotational/laser atherectomy. CIN was defined as an increase in post-PCI creatinine of ≥0.3mg/dl or ≥50% from baseline.

RESULTS: We included 2660 patients (n=1128 complex PCI,n=1532 non-complex PCI). Complex PCI patients tended to be older, and had higher cardiovascular comorbidity and Mehran CIN risk score. They also had a higher prevalence of type B2/C lesions and need for mechanical circulatory support, and received a higher mean contrast volume (284±137 vs. 189±90ml, p<0.001). CIN incidence was similar in complex vs. non-complexPCIpatients (12.1% vs. 11.5%, p=0.63), as was the need for in-hospital dialysis (0.5% vs. 0.2%, p=0.25). Upon multivariable adjustment, age, female sex, diabetes, ejection fraction, periprocedural hypotension, presentation with acute coronary syndrome, and contrast volume were independently associated with CIN, while complex PCI was not.

CONCLUSIONS: Complex PCI is not associated with an increased risk of CIN in all-comers. Further studies shouldconfirm our findings and investigate novel effective strategies to decrease the risk of this seriouscomplication.

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