Serial secretoneurin measurement and risk of ventricular arrhythmias and death in patients with left ventricular systolic dysfunction.

Background: Secretoneurin, a member of the granin protein family, is associated with the risk of mortality in patients with acute and chronic heart failure. Secretoneurin may play an important role in cardiomyocyte calcium handling, suggesting that it may influence cardiac arrhythmia risk. We hypothesized that baseline and serial measurements of circulating secretoneurin are associated with the risk of incident ventricular tachyarrhythmias (VA) and death, and that serial measurement would provide prognostic information beyond baseline values.

Motivation and socialization during summer predict medical students' success: An artificial intelligence study.

Purpose: The latest reform of French medical studies has moved the National Ranking Examination before residency to the beginning of the sixth-year for undergraduate medical students, thus placing unprecedented workload during the preceding summer. The main objective was to determine whether study conditions and psychosocial factors were associated with student success in this model of intense workload.

Materials And Methods: An online survey designed with six student-partners was sent at a French Medical School after the examination in 2023.

Participant Engagement and Preference Study for Clinical Outcomes Associated With Atrial Fibrillation: The PEARL-AF Study.

Background: Quantifying patients' preferences for health outcomes associated with atrial fibrillation (AF) and its treatments offers a replicable approach to considering the patient perspective in regulatory decision-making.

Objective: The authors conducted a preference survey to estimate the relative importance of AF-related events for use in clinical trial analyses to estimate net health benefits with anticoagulants.

Methods: The survey included nontechnical descriptions of three severities of stroke, systemic embolism, myocardial infarction (MI) with or without subsequent heart failure (HF), major bleeding, clinically relevant nonmajor bleeding, and death.

Lipoprotein (a) Testing in Patients With Atherosclerotic Cardiovascular Disease in 5 Large US Health Systems.

Background: Lipoprotein (a) is an independent risk factor for atherosclerotic cardiovascular disease. However, lipoprotein (a) testing remains variable and it is unclear what factors influence testing and if testing changes clinical management.

Methods And Results: A retrospective study using electronic medical record data from 5 health systems identified an atherosclerotic cardiovascular disease cohort divided into those with and without a lipoprotein (a) test between 2019 and 2021.

Selective enhancement of H signal from water and oil in porous media at low field with Overhauser DNP.

In porous media MR studies, discriminating between oil and water presents a challenge because MR lifetimes are often similar and spectra overlap. Low saturations might suggest an experimental strategy of increasing the static field for increased sensitivity, but susceptibility effects are exacerbated at higher field. Overhauser dynamic nuclear polarization, effective at low static field, was employed with water and oil-soluble nitroxide to selectively enhance water and oil signals.