Clinical predictor of volume hypoperfusion in patients treated with extended window mechanical thrombectomy: an external validation study.

Introduction: Treatment of ischemic stroke has expanded beyond the 6-hour window, but identification of eligible patients requires advanced imaging, which is often unavailable. This study aimed to validate a prediction model using the NIHSS score (a measure of stroke severity) to estimate hypoperfusion volume and determine eligibility for DEFUSE 3 treatment criteria.

Materials And Methods: Data from ischemic stroke patients with less than 24 hours' evolution were analyzed.

[Impact of artificial intelligence on therapeutic metrics of cerebrovascular attack during the COVID-19 pandemic].

Introduction: The start of the COVID-19 pandemic forced the implementation of changes in the emergency services care system. Concomitantly, at our institution, we implemented the artificial intelligence (AI) software, RAPID.AI, for image analysis in ischemic stroke (IS).

[Recommendations For The Management Of Spontaneous Intracerebral Hemorrhage During Hospitalization].

Stroke is the leading cause of neurological disability in people over 40 years of age and the fourth leading cause of death in Argentina. In the last ten years, the indexed publications related to the treatment of ischemic stroke were more numerous than those of hemorrhagic stroke. The objective of this material is to provide local and updated recommendations for the management of patients with spontaneous intracerebral hemorrhage during hospitalization.

Hyperacute Incidental Late Myocardial Enhancement in Ischemic Stroke Using Chest Spectral CT: Relationship with Etiology.

Background: Hyperacute cardiac imaging of patients with acute ischemic stroke (AIS), though desirable, is impractical. Using delayed-enhancement, low-dose, non-gated, chest spectral computed tomography scans (DESCT), we explored the prevalence and patterns of incidental myocardial late iodine enhancement (LIE) and embolic sources, and their relationship with stroke etiology.

Methods: Since July 2020, DESCT was performed after cerebrovascular CT angiography (CTA) among patients with suspected AIS undergoing CT using a dual-layer spectral scanner, without additional contrast administration.

Epicardial and periaortic fat characteristics in ischemic stroke: Relationship with stroke etiology and calcification burden.

Purpose: We explored epicardial (EAT) and periaortic (PAT) adipose tissue characteristics in patients with acute ischemic stroke (AIS), and the relationship with stroke etiology, calcification burden, and inflammation.

Method: We included a retrospective cohort of consecutive patients admitted with AIS between 2015 and 2020 who underwent a chest computed tomography. We calculated volumes and attenuation of EAT and PAT, and coronary artery (CAC), and thoracic aortic (TAC) calcification.

Emerging role of spectral computed tomography in neurocardiology.

The complex and reciprocal relationship between the brain and the heart has gained increasing attention under the concept of neurocardiology. Myocardial injury is common in cerebrovascular disease, and cardiovascular complications are the second leading cause of death after stroke. Cardiac computed tomography (CT) is a fast and reliable non-invasive tool for the assessment of cardioembolic sources.

Early Triage of Cardioembolic Sources Using Chest Spectral Computed Tomography in Acute Ischemic Stroke.

Objectives: The present study investigated the potential usefulness of delayed-phase, low-dose, non-gated, chest spectral CT scans (DSCT) for the early triage of cardioembolic (CE) sources in patients admitted with acute ischemic stroke (AIS), and for the simultaneous detection of myocardial disease and thrombotic complications.

Material And Methods: Since July 2020 and promoted by the COVID-19 pandemic, we implemented the use of DSCT after cerebrovascular CT angiography (CTA) among patients with AIS using a dual-layer spectral CT. We explored the presence of CE sources, as well as late myocardium iodine enhancement (LIE) and pulmonary thromboembolism.

Cardiovascular thrombotic complications in acute ischemic stroke assessed by chest spectral computed tomography during COVID-19.

During the pandemic context, diagnostic algorithms had to be adapted considering the decimated medical personnel, local technical resources, and the likelihood of contamination. Given the higher probability of thrombotic complications related to COVID-19 and the availability of a dual-layer spectral computed tomography (CT) scanner, we have recently adopted the use of low-dose, non-gated, chest CT scans performed five minutes after contrast administration among patients admitted with acute ischemic stroke (AIS) undergoing cerebrovascular CT angiography. Dual-layer spectral CT comprises a single X-ray source and two-layer detector with different photon-absorption capabilities.

Sex-Related Differences after Endovascular Treatment of Acute Ischemic Stroke in the 'Real World'.

Background: Gender differences are often reported in the field of ischemic stroke, although most of such discrepancies were observed in randomized trials involving highly selected populations. We therefore explored gender differences regarding 90-day outcomes in large vessel occlusion (LVO) strokes receiving endovascular treatment in a real world setting.

Methods: This prospective registry included anterior and/or posterior circulation LVO strokes admitted between January 2014 and December 2019 who received mechanical thrombectomy up to 24 hours from symptoms onset or last known to be well.

[Acute ischemic stroke in anterior territory: endovascular treatment].

Endovascular treatment (EVT) has become the standard of care for acute ischemic stroke (AIS) with proximal large vessel occlusions (LVO). However, it is still unknown whether these results can be generalized to clinical practice. We aimed to perform a retrospective review of patients who received EVT up to 24 hours, and to assess safety and efficacy in everyday clinical practice.

Left and right atrial function after percutaneous mitral valvuloplasty in mitral stenosis and sinus rhythm.

Background And Aim Of The Study: Percutaneous mitral valvuloplasty (PMV) is an effective method for treating patients with severe mitral stenosis. The study aim was to compare left and right atrial appendage functions before and after PMV.

Methods: Twenty-five patients (23 women, two men; mean age 38 +/- 9 years; range: 21-57 years) with severe mitral stenosis and sinus rhythm who underwent PMV were included in the study.