Septic cardiomyopathy (SCM) is a reversible cardiac dysfunction occurring in patients with sepsis or septic shock, characterized by transient impaired myocardial contractility. Despite its prevalence in severe sepsis and significant impact on patient outcomes, SCM remains underdiagnosed and is one of the least studied forms of cardiomyopathy. Its recognition and management are further complicated by the absence of a universally accepted consensus on its diagnostic criteria and definition.
View Article and Find Full Text PDFEur Heart J Case Rep
November 2024
Background: Atrial fibrillation (AF) is the most frequently encountered sustained arrhythmia worldwide. This supraventricular rhythm disorder is precipitated by advanced age, valvular heart disease, hypertension, heart failure, congenital heart defects, and others. However, the role of anabolic steroids (ASs) abuse in precipitating AF remains insufficiently researched and largely underreported, despite their known cardiovascular risks.
View Article and Find Full Text PDFMEMS bandpass filters based on electrostatically driven, mechanically coupled beams with in-plane motion have been demonstrated up to the VHF band. Filters higher than second order with parallel plate drives have inherent tuning difficulties, which may be resolved by adding mass-loaded beams to the ends of the array. These beams deflect for DC voltages, and thus allow synchronized electrostatic tuning, but do not respond to in-band AC voltages and hence do not interfere with dynamic synchronization.
View Article and Find Full Text PDFBackground: Tumor embolism is the least well-described cause of pulmonary embolism, taking into account the non-specificity of radiographic and nuclear imaging results, the necessity of anatomopathological evidence and the frequency of deep venous thrombosis in the course of solid tumors, suggesting thus thromboembolism.
Case Presentation: We report a rare case of urothelial carcinoma of the urinary bladder associated with persistent pulmonary embolism despite being on different anticoagulation regimens, the patient was ultimately found to have tumor thrombus in the pulmonary trunk secondary to tumoral extension. We provide a literature review as well about the diagnosis, evaluation and prognosis and of this rare clinical entity.
Vasospastic angina is the spasm of coronary arteries causing transient myocardial ischemia. VSA is commonly managed with antispasmodic medications including calcium-channel blockers and nitrates. When vasospasm is refractory to conventional medications, unconventional treatment modalities may be used for symptomatic relief.
View Article and Find Full Text PDFCOVID-19 vaccines have reduced both lethality and hospitalization rates of the novel coronavirus disease. Nevertheless, multiple side effects have been reported in the literature, most often are harmless. We report two cases of acute myocarditis, hospitalized in the emergency department for chest pain occurring after the second dose of mRNA vaccine AstraZeneca.
View Article and Find Full Text PDFAcute myocarditis corresponds to an acute inflammation of the myocardium whose origin is most often viral. Several viruses can be incriminated to note the parvovirus B19, the virus herpes of the group 6 and to a lesser degree the virus of the hepatitis C (VHC). Since 2019 and with the discovery of SARS COV2 some cases of myocarditis associated with COVID have been noted, this last association is rare and is present in only 5% of cases.
View Article and Find Full Text PDFMicromachines (Basel)
September 2021
Micro-electromechanical systems (MEMS) bandpass filters based on arrays of electrostatically driven coupled beams have been demonstrated at MHz frequencies. High performance follows from the high Q-factor of mechanical resonators, and electrostatic transduction allows tuning, matching and actuation. For high-order filters, there is a conflict between the transduction mechanism and the coupling arrangement needed for dynamic synchronization: it is not possible to achieve synchronization and tuning simultaneously using a single voltage.
View Article and Find Full Text PDFImprovements to white light optical imaging of widely spaced, high aspect ratio nanostructures are demonstrated using dark-field field microscopy. 1D models of bright- and dark-field imaging are developed from rigorous modal diffraction theory by assuming that features are periodic. A simple model is developed to explain dark field results and simulated line images obtained using the two modalities are compared for different dimensions and materials.
View Article and Find Full Text PDFThe objective of this paper is to demonstrate the integration of a MOF thin film on electrostatically actuated microstructures to realize a switch triggered by gas and a sensing algorithm based on amplitude tracking. The devices are based on the nonlinear response of micromachined clamped-clamped beams. The microbeams are coated with a metal-organic framework (MOF), namely HKUST-1, to achieve high sensitivity.
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