Clinical case of acute chord rupture of the mitral valve posterior leaflet in older patient with comorbidities

The article describes the etiologic role of various factors such as chronic rheumatic heart disease, bacterial endocarditis, aortic valve stenosis, hypertension, coronary heart disease, including acute myocardial infarction, degenerative disease of the valves, connective tissue diseases, chest trauma, systemic lupus erythematosus, con-genital heart disease which leading to the mitral valve chords rupture, gives the current classification of the nosology and also features of manifestation and clinical cours

Rex Eris Si Recte Facias, Si Non Facias Non Eris

The authors consider some of the most important features of the interaction between the government and Church using a case study of the Russian state in the Early Modern times, analyzing the two main directions of this interaction, that is, the confessionalization of the society and the creation of a "tsarist discourse

Effect of electron irradiation on the optical properties of nanocrystalline SiC films on single crystal Al2O3 substrates

It was studied the effect of irradiation with high-energy (10 MeV) electrons on the optical properties of nanocrystalline carbide film system silicon / sapphire substrates in a wide range of fluences of 5·1014 to 2·1020 cm–2 and subsequent annealing in vacuum in the range of 200—1200°C. It was found that radiation-induced changes in the optical properties of nc SiC films is primarily manifested in the UV region of the spectrum associated with interband transitions, as well as in the region of the spectrum due to the absorption of intrinsic defects and disordered regions. It was established in the beginning of the annealing of defects in irradiated films has been observed at 200°C, which indicates the high concentration of carbon vacancies with the lowest activation energy. Significant changes in the optical properties of sapphire begin at fluence 5·1017 cm–2, which should be considered when using these materials under conditions of intense radiation impact

EXPERIENCE OF MANAGEMENT OF THE PATIENT WITH THE RESYNCHRONIZATION BIVENTRICULAR PACING WITHOUT DESTRUCTION OF ATRIO-VENTRICULAR NODE SUFFERING FROM CHRONIC HEART FAILURE AND PERMANENT ATRIAL FIBRILLATION

The case of cardiac biventricular resynchronization without destruction of the atrio-ventricular node in patients with chronic heart failure (CHF) and permanent atrial fibrillation (AF) is described. The observation period was 14 months. The case demonstrates that biventricular resynchronization for severe heart failure with atrial fibrillation and significant atria size with theoretical and practical impossibility of its’ transforming into the long-term persistent atrial fibrillation is a reasonable alternative of atrio-ventricular pacing. Though the destruction of the atrio-ventricular node can be delayed for a significant period of time, it should be done at the earliest opportunity. Pacemaker implantation does not cancel medical therapy, with the necessity for the latter to be according to the conducted biventricular pacing

Clinical case of acute chord rupture of the mitral valve posterior leaflet in older patient with comorbidities

The article describes the etiologic role of various factors such as chronic rheumatic heart disease, bacterial endocarditis, aortic valve stenosis, hypertension, coronary heart disease, including acute myocardial infarction, degenerative disease of the valves, connective tissue diseases, chest trauma, systemic lupus erythematosus, con-genital heart disease which leading to the mitral valve chords rupture, gives the current classification of the nosology and also features of manifestation and clinical cours

QRS COMPLEX DURATION AND CLINICAL FEATURES OF PATIENTS WITH PERMANENT PACEMAKERS

125 patients (57 – women, 68 – males) with permanent pacing were examined. Among the indications for pacemaker installation there were atrio-ventricular block (AV-block) – 77 people (62 ± 4 %), sick sinus node syndrome (SSNS) – 32 patients (26 ± 4 %), bradysystolic AF – 8 patients (6 ± 2 %). 8 patients with cardioresynchronization therapy (6 ± 2 %) were also included. Average age was 69 ± 7 years. The patients were divided into two groups: first – patients with QRS complex duration under 120 mc, second – QRS duration complex with more than 120 mc. It was found that QRS complex duration with more than 120 mc is associated with males and patients with postinfarction cardiosclerosis, heavier functional class of heart failure and atrial fibrillation. Given the trend towards more clinically significant cardiovascular disease in patients with a QRS complex duration with more than 120 mc, this group of patients needs optimal therapeutic management. The results show the feasibility of and prospects for further study of this group of patients

THE QTC INTERVAL DURATION СLASS AND CLINICAL FEATURES OF PATIENTS WITH PACEMAKERS IN THE ACUTE POSTOPERATIVE PERIOD

Implantation of the pacemaker (ECS) in the various classes of corrected QTc interval duration of stimulated complexes were investigated. Evaluation was made by sex and age of the patients, chronic forms of ischemic heart disease (CIHD): postinfarction cardiosclerosis, stable angina (I-IV functional classes (FC)); stable angi-na (I-IV FC), arterial hypertension (AH) – 1-3 degrees and stages (1-4), type of diabetes mellitus (DM), atrial fibrillation (AF) (paroxysmal and persistent, permanent), chronic heart failure (CHF) – stages I-III, I-IV FC; functional indicators before pacemaker implantation and in the acute postoperative period (3-5 days after surgery): QTc interval duration, heart rate (HR), systolic blood pressure (SBP) and diastolic blood pressure (DBP); ejection fraction (EF) of the left ventricle (LV), anterior-posterior size of the left atrium (LA), end-systolic volume (ESV) and end-diastolic volume (EDV), the thickness of the back wall of the left ventricle (AP LV), the thickness of the interventricular septum (IVS), left ventricular mass (LVM). The patients were divided into 3 classes: class 1 – normal QTc (320-440 ms) – 27 (22 %) patients, class 2 – elongated QTс (> 440 ms) – 97 (78 %) patients. Standard statistical procedures using Microsoft Excel were applied for data processing. The results showed that QTc interval duration of stimulated complexes in the acute postoperative period after pacemaker implantation can be established in a physiological range in 22 % of patients, and in 78 % – it remains longer or even elongated. Elongation associated with a higher incidence and the increase of FC and stages of heart failure, high values of ESV and EDV, mostly in the pacing mode VVI/VVIR and DDD/DDDR. Patients with a pacemaker require more careful monitoring the stimulation parameters as well as ongoing drug therapy

Fluorescence features of laser dyes for 570–800 nm region in sol-gel silica.

The goal of the present research is measuring-in and analysis of fluorescence characteristics of silica matrices activated with a series of the dyes