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ObjectivesThis study aims to evaluate whether results of “off-hours” and “regular-hours” primary angioplasty (primary percutaneous coronary intervention [pPCI]) are comparable in an unselected population of patients with ST-segment elevation acute myocardial infarction treated within a regional network organization.BackgroundConflicting results exist on the outcome of off-hours pPCI.MethodsWe analyzed in-hospital and 1-year cardiac mortality among 3,072 consecutive ST-segment elevation myocardial infarction (STEMI) patients treated with pPCI between January 1, 2004, and June 30, 2006, during regular-hours (weekdays 8:00 am to 8:00 pm) and off-hours (weekdays 8:01 pm to 7:59 am, weekends, and holidays) within the STEMI Network of the Italian Region Emilia-Romagna (28 hospitals: 19 spoke and 9 hub interventional centers).ResultsFifty-three percent of patients were treated off-hours. Baseline findings were comparable, although regular-hours patients were older and had more incidences of multivessel disease. Median pain-to-balloon (195 min, interquartile range [IQR]: 140 to 285 vs. 186 min, IQR: 130 to 280 min; p = 0.03) and door-to-balloon time (88 min, IQR: 60 to 122 vs. 77 min, IQR: 48 to 116 min; p < 0.0001) were longer for off-hours pPCI. However, unadjusted in-hospital (5.8% off-hours vs. 7.2% regular-hours, p = 0.11) and 1-year cardiac mortality (8.4% off-hours vs. 10.3% regular-hours, p = 0.08) were comparable. At multivariate analysis, off-hours pPCI did not predict an adverse outcome either for the overall population (odds ratio [OR]: 0.70, 95% confidence interval [CI]: 0.49 to 1.01) or for patients directly admitted to the interventional center (OR: 0.79, 95% CI: 0.52 to 1.20).ConclusionsWhen pPCI is performed within an efficient STEMI network focused on reperfusion, the clinical effectiveness of either off-hours or regular-hours pPCI is comparable.

Degenerative aortic stenosis (AS) is a growing cause of heart failure and death in the elderly. The majority of patients with symptomatic AS are currently treated with surgical or transcatheter aortic valve replacement (TAVR). It was recently suggested [(1)][1] that a share of the sometimes lethal

Aims In accordance with current guidelines, patients discharged after acute myocardial infarction (AMI) are usually prescribed agents acting on the renin–angiotensin system (ACE-I/ARB). However, adherence to prescribing medications is a recognized problem and most studies demonstrating the value of adherence were limited by their non-randomized design and by ‘healthy-adherer’ bias. Herein we sought to evaluate the relationship between adherence to ACE-I/ARB and risk of subsequent AMIs, by using the self-controlled case-series design which virtually eliminates interpersonal confounding, being based on intrapersonal comparisons. Methods and results We linked data from three longitudinal registries containing information about hospitalizations, drug prescriptions, and vital status of all residents in an Italian region. From 30 089 patients hospitalized for AMI in the years 2009–11, we enrolled the 978 with non-fatal re-AMIs at Days 31–365 after discharge, receiving at least one ACE-I/ARB prescription collected at any of the regional pharmacies. Using information on prescriptions, each individual's observation time was then divided into periods exposed or unexposed to ACE-I/ARB. The relative re-AMI incidence rate ratios (IRRs) of ACE-I/ARB exposure were estimated by conditional Poisson regression. During drug-covered periods, the risk of AMI recurrence was ∼20% lower, i.e. the IRR (rate of recurrent AMI in exposed versus unexposed periods) was 0.79 (95% CI 0.66–0.96, P = 0.001). The benefit of ACE-I/ARB was confirmed also by sensitivity analyses considering only first recurrences, excluding cases with AMI within previous 3 years, or with long, not AMI, hospital re-admission. Conclusions Poor adherence to ACE-I/ARB prescription medication was associated with a 20% increased risk of recurrent AMI. This was consistent with previous research, but the SCSS study design, even if not randomized, eased previous concerns about healthy-adherer bias.

AIMS: To evaluate the relationship between ECG patterns and infarct related artery (IRA) in an all-comer population with ST-segment elevation myocardial infarction (STEMI) and validate current criteria for identifying IRA (right coronary artery (RCA) versus left circumflex artery (LCA)) in inferior STEMI and for diagnosing left main (LM) or left anterior descendent artery occlusion (LAD) in anterior STEMI.METHODS AND RESULTS: We retrospectively analysed ECGs at presentation and coronary angiogram in 885 consecutive patients undergoing primary percutaneous coronary intervention. Six ECG patterns were identified: anterior-STEMI (n=433; 49.0%), inferior-STEMI (i=365; 43.0%), lateral-STEMI (n=43; 5.0%), left bundle branch block (n=26; 3.0%), posterior-STEMI (n=7; 1.0%) and de Winter sign (n=7; 1.0%). The last two ECG patterns were univocally associated with LCA and proximal LAD occlusion respectively. In patients with inferior STEMI, predefined ECG algorithms showed high sensitivity(>90%) for RCA occlusion and high specificity(>90%) for LCA. The diagnostic performance was mainly determined by RCA dominance. In anterior STEMI the vectorial analysis of ST deviation in both frontal and horizontal planes could identify patients with LM/proximal LAD occlusion (adjusted-odds ratio for in-hospital mortality =2.45, 95% confidence interval: 1.31-4.56, p = 0.005) with low sensitivity (maximum 60%; using ST-depression in lead II, III, aVF + ΣSTE aVR + V1-ST depression V6≥0) and high specificity (maximum 95%; using ST-depression in inferior leads + ST-depression in V6).CONCLUSION: In STEMI undergoing primary percutaneous coronary intervention, six ECG patterns can be identified with a non-univocal relationship to the IRA. In inferior STEMI, vectorial analysis of ST deviation identifies IRA with a high appropriateness only when RCA is the dominant artery. In anterior STEMI, criteria derived from both frontal and horizontal planes identify LM/proximal LAD occlusion with high specificity but low sensitivity.