Background: Management of ST-elevated myocardial infarction (STEMI) necessitates rapid reperfusion. Delays prolong myocardial ischemia and increase the risk of complications, including death. The COVID-19 pandemic may have affected management of STEMI. We evaluated the relative volume of hospitalizations and clinical time intervals within a regional STEMI system. Methods: Four hundred ninety-four patients with STEMI were grouped into prelockdown, lockdown, and reopening cohorts. Clinical, temporal, and outcome data were collected and compared among groups for R ESUM EContexte : La prise en charge de l'infarctus du myocarde avec el evation du segment ST (STEMI) n ecessite une reperfusion rapide. Tout retard de reperfusion prolonge l'isch emie myocardique et augmente le risque de complications, y compris le risque de d ecès. Il est possible que la pand emie de COVID-19 ait nui à la prise en charge du STEMI. Nous avons donc evalu e le nombre relatif d'hospitalisations et le temps ecoul e avant la reperfusion au sein d'un système r egional de traitement des STEMI. M ethodologie : Au total, 494 patients ayant pr esent e un STEMI ont et e divis es en trois cohortes : pr econfinement, confinement et During the COVID-19 pandemic, a reduction in patients presenting with ST-elevated myocardial infarction (STEMI) has been reported. 1,2 These studies lacked data on important areas including impact of the COVID-19 lockdown on STEMI care in regions with low incidence of disease, granular details regarding reperfusion management during lockdown, effect of the pandemic on STEMI care in rural regions, and patterns of STEMI volume posteCOVID-19 lockdown. It is imperative to study the effects of COVID-19 comprehensively, so that lessons can be learned for a potential second wave or future pandemics.From March 11, 2020, to August 16, 2020, the Ottawa regions recorded 2761 cases of In response to the initial outbreak, the Ontario Ministry of Health declared a state of emergency and instituted lockdown measures on March 17, 2020. 4 Various restrictions were imposed including closure of nonessential businesses, limits on social gatherings, and cancellation of elective medical procedures. 4 These interventions were successful in limiting the spread of COVID-19; however, concerns regarding an unintended impact on STEMI care were raised. 3,
In DLBCL patients treated with immunochemotherapy, the IPI and interim-PET provide independent prognostic information. In combination, a more powerful predictive model may be created as a nomogram. This can be refined in prospective trials and may help clinical decision making.
The goals of primary prevention in coronary atherosclerosis are to avoid sudden cardiac death, myocardial infarction or the need for revascularization procedures. Successful prevention will rely on accurate identification, effective therapy and monitoring of those at risk. Identification and potential monitoring can be achieved using cardiac computed tomography (CT). Cardiac CT can determine coronary artery calcification (CAC), a useful surrogate of coronary atherosclerosis burden. Cardiac CT can also assess coronary CT angiography (CCTA). CCTA can identify arterial lumen narrowing and highlight mural atherosclerosis hitherto hidden from other anatomical approaches. Herein we consider the role of CCTA and CAC-scoring in subclinical atherosclerosis. We explore the use of these modalities in screening and discuss data that has used CCTA for guiding primary prevention. We examine therapeutic trials using CCTA to determine the effects of plaque-modifying therapies. Finally, we address the role of CCTA and CAC to guide therapy as defined in current primary prevention documents. CCTA has emerged as an essential tool in the detection and management of clinical coronary artery disease. To date, its role in subclinical atherosclerosis is less well defined, yet with modern CT scanners and continued pharmacotherapy development, CCTA is likely to achieve a more prominent place in the primary prevention of coronary atherosclerosis.
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