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Background: Two biomarkers of early acute kidney injury-plasmatic neutrophil gelatinase-associated lipocalin (NGAL) and cystatin C-are not used in routine clinical practice in patients with ST-segment elevation myocardial infarction (STEMI) treated by percutaneous coronary intervention (PCI) because of a lack of supporting data., Aims: To evaluate the predictive value of NGAL and cystatin C regarding the incidence of contrast-induced acute kidney injury (CI-AKI) and clinical outcomes after STEMI in patients treated by primary PCI., Methods: Plasmatic NGAL and cystatin C were measured on admission, before any contrast exposure, in 701 unselected patients with STEMI. Associations between biomarker concentrations and incidence of CI-AKI (assessed at 48h), haemodialysis requirement at 1 year and all-cause mortality at 1 year were assessed by logistic regression analyses and receiver operating characteristic area under the curve analysis (c-statistic). Discrimination performance comparison was performed using the DeLong test., Results: NGAL and cystatin C had mild discrimination regarding CI-AKI, with c-statistics of 0.60 (P=0.001) and 0.60 (P=0.002), respectively. Combining NGAL and cystatin C did not improve their discrimination (c-statistic 0.61; P=0.001). There was no significant difference in discrimination between NGAL, cystatin C and baseline creatinine (P=0.57). Regression analyses showed no independent association between NGAL and CI-AKI, haemodialysis or 1-year mortality. Similarly, cystatin C was not associated with these clinical outcomes., Conclusions: In this cohort of patients with STEMI treated by primary PCI, plasmatic NGAL and cystatin C did not provide additional value regarding CI-AKI prediction compared with known risk factors such as baseline creatinine., (Copyright © 2018. Published by Elsevier Masson SAS.)

Aims: The aim of the study was to identify independent correlates of survival in patients undergoing PCI for refractory cardiogenic shock due to myocardial infarction (RCS-MI) with the need for extracorporeal life support (ECLS)., Methods and Results: This observational single tertiary centre study enrolled 106 consecutive patients (52.7±10.4 years) with ECLS placed before or after the PCI. Half of the patients had triple vessel disease and PCI was attempted whenever possible (74.5%). The 30-day mortality rate was 63.2%. Left main culprit vessel disease (19% of patients) (adj. HR [95% CI]: 2.31 [1.27-4.18], p=0.006) and sepsis-related organ failure assessment ≥13 (adj. HR 2.17 [1.25-3.75], p=0.005) were independently associated with 30-day mortality. The use of intra-aortic balloon pump (IABP) combined with ECLS was an independent protective factor (adj. HR 0.48 [0.28-0.80], p=0.006). Neither complete (p=0.66) nor successful (p=0.69) myocardial revascularisation was associated with 30-day survival., Conclusions: RCS in MI patients often reveals a severe multivessel coronary artery disease with no impact of early percutaneous coronary revascularisation on clinical outcome. The survival advantage of IABP when combined with ECLS further suggests that achieving an early effective haemodynamic support should be the major goal in this young patient population.

Background: It is unknown whether the efficacy and safety of drug-eluting stents (DES) apply in patients with chronic renal failure (CRF)., Aims: To compare DES with bare metal stents (BMS) for percutaneous coronary intervention (PCI) in CRF patients., Patients and Methods: Consecutive patients treated by PCI were allocated to four groups according to type of stent used (DES versus BMS) and creatinine clearance (CrCl). CRF was defined as CrCl less than 60 mL/minute. Cardiovascular death, major adverse cardiac events (MACE, defined as cardiovascular death, myocardial infarction, stroke and target lesion revascularization [TLR]), TLR and definite stent thrombosis (ST) were recorded at 1 year., Results: We note that 1376 consecutive patients underwent PCI with stent within 18 months: 534 (39%) and 492 (36%) patients without CRF and 224 (16%) and 126 (9%) patients with CRF were treated with BMS and DES, respectively. In the entire cohort, patients treated with DES had a higher restenosis risk profile. BMS were predominantly (87%) used for ST-segment elevation myocardial infarction. At 1 year, 6.2% had cardiovascular death, 15.8% MACE, 7.3% TLR and 1.5% ST. Cardiovascular death and MACE occurred less frequently in DES groups. The TLR rate was not significantly different in the CRF groups (BMS 9.8% vs DES 7.1%; P=0.44). No excess of ST was observed in the DES groups and use of DES was independently associated with absence of MACE and TLR., Conclusions: In patients with CRF, DES appear to be at least as effective as BMS--despite a higher restenosis risk profile--with no excess of ST at 1 year., (Copyright © 2011 Elsevier Masson SAS. All rights reserved.)

Objectives: The aim of this study was to compare efficacy and safety outcomes among patients receiving enoxaparin or unfractionated heparin (UFH) while undergoing percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI)., Background: Primary PCI (pPCI) for ST elevation has traditionally been supported by UFH. The low molecular weight heparin enoxaparin may provide better outcomes when used for pPCI., Methods: Consecutive eligible patients (580) undergoing pPCI enrolled in the prospective electronic Pitié-Salpêtrière registry of ischemic coronary syndromes (e-PARIS) registry were grouped according to whether they received UFH or enoxaparin as the sole anticoagulant. Logistic regression modeling, propensity-weighted adjustment, and sensitivity analyses were used to evaluate efficacy and safety endpoints for enoxaparin vs. UFH., Results: Enoxaparin was administered to 346 patients and UFH to 234 without ACT or anti-Xa guided dose adjustment. PCI was performed through the radial artery in 90%, with frequent (75%) use of GPIIb/IIIa antagonists. Patients receiving enoxaparin were more likely to be therapeutically anticoagulated during the procedure (68% vs. 50%, P < 0.0001) and were less likely to experience death or recurrent myocardial infarction (MI) in hospital (adjusted OR 0.28 95% CI (0.12-0.68) or by 30 days (adjusted OR 0.35 95% CI 0.16-0.81). All cause mortality was also reduced in hospital (adjusted OR 0.32, 95% CI (0.12-0.85) and to 30 days (adjusted OR 0.40 95% CI 0.17-0.99). Other ischemic endpoints were similarly reduced with enoxaparin. Thrombolysis in myocardial infarction (TIMI) major bleeding events were numerically fewer among patients receiving enoxaparin (1.2% vs. 2.6%, P = 0.2)., Conclusions: In patients with STEMI presenting for PCI, enoxaparin was associated with a reduction in all ischemic complications, more frequent therapeutic anticoagulation, and no increase in major bleeding when compared against unfractionated heparin. © 2010 Wiley-Liss, Inc., (Copyright © 2010 Wiley-Liss, Inc.)

Background: Oral antiplatelet agents (OAAs) can prevent further vascular events in cardiovascular disease. How prior use or recent discontinuation of OAA affects clinical presentation of acute coronary syndromes (ACS) and clinical outcomes (death, myocardial infarction [MI]) is unclear., Methods and Results: We studied and followed up for up to 30 days a cohort of 1358 consecutive patients admitted for a suspected ACS; of these, 930 were nonusers, 355 were prior users of OAA, and 73 had recently withdrawn OAA. Nonusers were at lower risk, more frequently presented with ST-elevation MI on admission, and more frequently had Q-wave MI at discharge than prior users (36.6% versus 17.5%, P<0.001; and 47.8% versus 28.2%, P<0.001, respectively). However, there was no difference regarding the incidence of death or MI at 30 days between nonusers and prior users (10.3% versus 12.4%, P=NS). In addition, prior users experienced more major bleeds within 30 days compared with nonusers (3.4% versus 1.4%, respectively; P=0.04). Recent withdrawers were admitted on average 11.9+/-0.8 days after OAA withdrawal. Interruption was primarily a physician decision for scheduled surgery (n=47 of 73). Despite a similar cardiovascular risk profile, recent withdrawers had higher 30-day rates of death or MI (21.9% versus 12.4%, P=0.04) and bleedings (13.7% versus 5.9%, P=0.03) than prior users. After multivariate analysis, OAA withdrawal was found to be an independent predictor of both mortality and bleedings at 30 days., Conclusions: Among ACS patients, prior users represent a higher-risk population and present more frequently with non-ST-elevation ACS than nonusers. Although patients with a recent interruption of OAA resemble those chronically treated by OAA, they display worse clinical outcomes.