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ST-segment elevation myocardial infarction (STEMI) networks should guarantee STEMI care with good clinical results and within the recommended time parameters. There is no contemporary information on the performance of these networks in Spain. The objective of this study was to analyze the clinical characteristics of patients, times to reperfusion, characteristics of the intervention performed, and 30-day mortality.Prospective, observational, multicenter registry of consecutive patients treated in 17 STEMI networks in Spain (83 centers with the Infarction Code), between April 1 and June 30, 2019.A total of 5401 patients were attended (mean age, 64±13 years; 76.9% male), of which 4366 (80.8%) had confirmed STEMI. Of these, 87.5% were treated with primary angioplasty, 4.4% with fibrinolysis, and 8.1% did not receive reperfusion. In patients treated with primary angioplasty, the time between symptom onset and reperfusion was 193 [135-315] minutes and the time between first medical contact and reperfusion was 107 [80-146] minutes. Overall 30-day mortality due to STEMI was 7.9%, while mortality in patients treated with primary angioplasty was 6.8%.Most patients with STEMI were treated with primary angioplasty. In more than half of the patients, the time from first medical contact to reperfusion was120 minutes. Mortality at 30 days was relatively low.

To determine the rate of adverse events in patients with acute heart failure (AHF) who were discharged from the emergency department (ED) after classification as low risk according to MEESSI score (multiple risk estimate based on the Spanish ED scale), to analyze the ability of the score to predict events, and to explore variables associated with adverse events.Patients in the EAHFE registry (Epidemiology of Acute Heart Failure in EDs) were stratified according to risk indicated by MEESSI score in order to identify those considered at low risk on discharge. All-cause 30-day mortality and revisits related to AHF within 7 days and 30 days were recorded. The area under the receiver operating characteristic curve (AUC) was calculated for the MEESSI score's ability to predict these events. Associations between 42 variables and 7-day and 30-day revisits to the ED were analyzed by multivariable logistic regression.A total of 1028 patients were included. The 30-day mortality rate was 1.6% (95% CI, 0.9%-2.5%). The 7-day and 30-day revisit rates were 8.0% (95% CI, 6.4%-9.8%) and 24.7% (95% CI, 22.1%-25.7%), respectively. The AUCs for MEESSI score discrimination between patients with and without these outcomes were as follows: 30-day mortality, 0.69 (95% CI, 0.58-0.80); 7-day revisiting, 0.56 (95% CI, 0.49-0.63); and 30-day revisiting, 0.54 (95% CI, 0.50-0.59). Variables associated with 7-day revisits were long-term diuretic treatment (odds ratio [OR], 2.45; 95% CI, 1.01-5.98), hemoglobin concentration less than 110 g/L (OR, 1.68; 95% CI, 1.02-2.75), and intravenous diuretic treatment in the ED (OR, 0.53; 95% CI, 0.31-0.90). Variables associated with 30-day revisits were peripheral artery disease (OR, 1.74; 95% CI, 1.01-3.00), prior history of an AHF episode (OR, 1.42; 95% CI, 1.02-1.98), long-term mineralocorticoid receptor antagonist treatment (OR, 1.71; 95% CI, 1.09-2.67), Barthel index less than 90 points in the ED (OR, 1.48; 95% CI, 1.07-2.06), and intravenous diuretic treatment in the ED (OR, 0.58; 95% CI, 0.40-0.84).Patients with AHF who are at low risk for adverse events on discharge from our EDs have event rates that are near internationally recommended targets. The MEESSI score, which was designed to predict 30-day mortality, is a poor predictor of 7-day or 30-day revisiting in these low-risk patients. We identified other factors related to these events.Investigar la tasa de eventos adversos en pacientes con insuficiencia cardiaca aguda (ICA) clasificados de bajo riesgo por la escala MEESSI y dados de alta desde urgencias, la capacidad discriminativa de dicha escala para estos eventos en dichos pacientes y las variables asociadas.Se estratificó el riesgo de los pacientes del Registro EAHFE (cohortes 2-5) mediante la escala MEESSI y se analizaron los clasificados de bajo riesgo dados de alta desde urgencias. Se investigó la mortalidad por cualquier causa a 30 días (M-30d), la revisita a urgencias por ICA a 7 días (REV-7d) y la revisita a urgencias u hospitalización por ICA a 30 días (REV-H-30d). Se calculó el área bajo la curva (ABC) de la característica operativa del receptor (COR) de la escala MEESSI para estos eventos. Se analizó la relación entre 42 variables y RV-7d y RV-H-30d mediante regresión logística multivariable.Se incluyeron 1028 pacientes. La M-30d fue 1,6% (IC 95%: 0,9-2,5), la REV-7d fue 8,0% (6,4-9,8) y la REV-H-30d fue 24,7% (22,1-25,7). El ABC ROC de la puntuación MEESSI para discriminar estos eventos adversos fue 0,69 (0,58-0,80), 0,56 (0,49-0,63) y 0,54 (0,50-0,59), respectivamente. Se asociaron con RV-7d: tratamiento diurético crónico (OR 2,45; 1,01-5,98), hemoglobina110 g/L (1,68; 1,02-2,75) y tratamiento diurético intravenoso en urgencias (0,53; 0,31-0,90). Se asociaron con REV-H-30d: arteriopatía periférica (1,74; 1,01-3,00), episodios previos de ICA (1,42; 1,02-1,98), tratamiento crónico con inhibidores de receptores mineralocorticoides (1,71; 1,09-2,67), índice de Barthel en urgencias90 puntos (1,48; 1,07-2,06) y tratamiento diurético intravenoso en urgencias (0,58; 0,40-0,84).Los pacientes con ICA de bajo riesgo dados de alta desde urgencias presentan tasas de eventos adversos cercanas a los estándares recomendados internacionalmente. La escala MEESSI, diseñada para predecir M-30d, tiene escasa capacidad predictiva para REV-7d y REV-H-30d en los pacientes de bajo riesgo. Este estudio describe otros factores asociados a tales eventos.

It is widely accepted that edema occurs early in the ischemic zone and persists in stable form for at least 1 week after myocardial ischemia/reperfusion. However, there are no longitudinal studies covering from very early (minutes) to late (1 week) reperfusion stages confirming this phenomenon.This study sought to perform a comprehensive longitudinal imaging and histological characterization of the edematous reaction after experimental myocardial ischemia/reperfusion.The study population consisted of 25 instrumented Large-White pigs (30 kg to 40 kg). Closed-chest 40-min ischemia/reperfusion was performed in 20 pigs, which were sacrificed at 120 min (n = 5), 24 h (n = 5), 4 days (n = 5), and 7 days (n = 5) after reperfusion and processed for histological quantification of myocardial water content. Cardiac magnetic resonance (CMR) scans with T2-weighted short-tau inversion recovery and T2-mapping sequences were performed at every follow-up stage until sacrifice. Five additional pigs sacrificed after baseline CMR served as controls.In all pigs, reperfusion was associated with a significant increase in T2 relaxation times in the ischemic region. On 24-h CMR, ischemic myocardium T2 times returned to normal values (similar to those seen pre-infarction). Thereafter, ischemic myocardium-T2 times in CMR performed on days 4 and 7 after reperfusion progressively and systematically increased. On day 7 CMR, T2 relaxation times were as high as those observed at reperfusion. Myocardial water content analysis in the ischemic region showed a parallel bimodal pattern: 2 high water content peaks at reperfusion and at day 7, and a significant decrease at 24 h.Contrary to the accepted view, myocardial edema during the first week after ischemia/reperfusion follows a bimodal pattern. The initial wave appears abruptly upon reperfusion and dissipates at 24 h. Conversely, the deferred wave of edema appears progressively days after ischemia/reperfusion and is maximal around day 7 after reperfusion.