Thermal Stability of Austempered Ductile Iron Evaluated in a Temperature Range of 20-300K

The aim of this article was to determine through changes in magnetic properties the stability of the austempered ductile iron (ADI) microstructure during temperature changes in a range of 20 – 300 K. The measurements were taken in a vibrating sample magnetometer (VSM) using Fe27Ni2TiMoAlNb austenitic stainless steel and four types of austempered ductile iron obtained under various heat treatment conditions. The plotted curves showing changes in the magnetisation degree as a function of temperature had a number of characteristic points illustrating changes taking place in the microstructure. For each of the materials examined, the martensite start temperature Ms and the temperature range within which the martensitic transformation takes place were identified

Stała stymulacja serca w omdleniach wazowagalnych w świetle najnowszych zaleceń

Omdlenia odruchowe należą do najczęściej występujących w praktyce klinicznej. W większości przypadków ich przebieg jest łagodny i nie wymagają istotnych interwencji terapeutycznych. Problem stanowią omdlenia nawracające, z urazami i krótką fazą objawów prodromalnych, związane zwykle z istotną komponentą kardiodepresyjną. Jedna z metod ich leczenia to implantacja układu stymulującego serce. Celem artykułu jest przedstawienie dotychczasowej wiedzy na ten temat

Cardiac pacing in vasovagal syncope in the light of the latest recommendations

Reflex syncope is among the most commonly encountered in the clinical practice. Most of these events are mild and do not require major therapeutic interventions. The major problem is recurrent syncope with injuries and a short prodromal symptom phase, usually related to a significant cardiodepressive response. One treatment method is implantation of a cardiac pacemaker. The aim of this article is to present the current knowledge on this subject.Reflex syncope is among the most commonly encountered in the clinical practice. Most of these events are mild and do not require major therapeutic interventions. The major problem is recurrent syncope with injuries and a short prodromal symptom phase, usually related to a significant cardiodepressive response. One treatment method is implantation of a cardiac pacemaker. The aim of this article is to present the current knowledge on this subject

Diosgenyl 2-amino-2-deoxy-β-D-galactopyranoside: synthesis, derivatives and antimicrobial activity

The synthesis of diosgenyl 2-amino-2-deoxy-β-D-galactopyranoside is presented for the first time. This synthetic saponin was transformed into its hydrochloride as well as N-acyl, 2-ureido, N-alkyl, and N,N-dialkyl derivatives. Antifungal and antibacterial studies show that some of the obtained compounds are active against Gram-positive bacteria and Candida type fungi

Outcomes in Newly Diagnosed Atrial Fibrillation and History of Acute Coronary Syndromes: Insights from GARFIELD-AF

BACKGROUND: Many patients with atrial fibrillation have concomitant coronary artery disease with or without acute coronary syndromes and are in need of additional antithrombotic therapy. There are few data on the long-term clinical outcome of atrial fibrillation patients with a history of acute coronary syndrome. This is a 2-year study of atrial fibrillation patients with or without a history of acute coronary syndromes

Analysis of Outcomes in Ischemic vs Nonischemic Cardiomyopathy in Patients With Atrial Fibrillation A Report From the GARFIELD-AF Registry

IMPORTANCE Congestive heart failure (CHF) is commonly associated with nonvalvular atrial fibrillation (AF), and their combination may affect treatment strategies and outcomes