The work is based on an analysis of a clinical case in a patient with paroxysmal tachycardia with narrow QRS complexes, which was diagnosed as WPW phenomenon by electrocardiography. A differential electrophysiological diagnosis was performed. It was proven that tachycardia with narrow complexes was an atypical form of atrioventricular nodal reciprocal tachycardia, and the WPW phenomenon is a concomitant diagnosis. This finding allowed to perform a successful radiofrequency ablation of tachycardia without redundant applications and X-ray exposure. The obtained data allow to clarify the existing knowledge about paroxysmal tachycardia and to improve the results of diagnosis and surgical treatment of this category of patients.
Case of cardiac fibroma of the right ventricle of the heart in a girl of 1 year 3 months age is described. Clinically, the tumor had an asymptomatic course, which was interrupted by sudden occurrence of heart failure with attacks of the paroxysmal ventricular tachycardia. Fibroma had a typical histological structure at the pathomorphology. The death of a child occurred during the surgical treatment initiated due to vital indications, being a result of cardiac failure due to cardiogenic shock. Tumors of the heart are a rare pathology in childhood, difficult for timely diagnosis and treatment.
Myocardial bridging is a congenital anomaly of the coronary arteries, where a band of heart muscle tunnels through the myocardium instead of resting under epicardium, due to such conditions the artery constricts as the heart squeezes the blood to pump. The case of acute coronary syndrome without ST segment elevation is presented. The patient 44 years old was admitted to coronary care unit at emergency care hospital with suspected acute myocardial infarction. During the angiography myocardial bridging was diagnosed in the anterior interventricular branch of the left coronary artery which was the cause of retrosternal pain.
This article reviews scores and methodology of the assessment of the exercise test. The results of dobutamine ECG stress-tests, multispiral computer tomography determination of coronary calcium for diagnosis of the ischemic heart disease are presented. Clinical cases of false-positive and false-negative exercise tests demonstrating difficulties of exercise test results interpretation and their causes are discussed.
The paper describes the case of surgical treatment of hypertrophic obstructive cardiomyopathy. Extended resection of the interventricular septum, resection of three secondary (pathological) chords of the anterior leaflet of the mitral valve and mobilization of the papillary muscles of the mitral valve have been carried out using the Ferrazzi procedure. An objective improvement of echocardiography parameters and improvement of well-being with disappearance of dyspnea in moderate exercise and dizziness have been achieved after the operation.
Stent thrombosis is a dangerous life-threatening condition, which is more frequent during the first month after stent implantation. Currently, there are several possible schemes for preventing stent thrombosis with clopidogrel and stronger P2Y12 receptor inhibitors. The article describes the clinical case of stent thrombosis in a patient with clopidogrel resistance against the background of carrying the allelic variant of the gene CYP2C19*2, a «slow metabolizer of clopidogrel». Despite the recommended use of high doses of clopidogrel to improve the clinical outcome in patients with a homozygote CYP2C19*2 (*2/*2), this clinical case showed high doubtfulness of such tactics. In such cases, the use of more potent inhibitors of P2Y12 receptors is justified, since it allows improving clinical outcomes of mechanical revascularization.
This study demonstrates some limitations in assessing of diagnostic tests: bicycle ergometry, treadmill test, stress echocardiography, daily ECG monitoring, as well as multispiral CT with determination of coronary calcium that makes possible to confirm or exclude coronary artery disease in women. Two clinical cases are presented. The data on stratification of cardiovascular risk are included.
Malignant tumors of the heart are very rare in clinical practice. The causes of the disease so far have not been established. Therefore, a rare clinical case of in vivo diagnosis of primary cardiac tumor (angiosarcoma, complicated by ventricular tachycardia refractory to antiarrhythmic treatment) is of a clinical interest.
The aim – to explore morphological changes of coronary arteries with severe tortuosity in children. Four autopsy cases of severe coronary artery tortuosity are presented: three cases of intrauterine fetal death (two male patients and one female, at the gestation age of 28, 29 and 39 weeks) and the autopsy case of one-year-old boy. Morphological changes of the coronary arteries were examined by standard histological and histochemical methods (hematoxylin-eosin, Masson’s trichrome, Hart’s elastic stainings). Severe tortuosity of the anterior descending coronary artery was prevalent (in three cases). Detection of tortuous coronary arteries in fetuses, who died prenatally, indicates the congenital genesis of this vascular anomaly.
Heart rhythm disorder is a frequent concomitant disease of cardiovascular and extra-cardiac pathology. A rare variant of heart rhythm disorder, which is not typical for newborns and young people, is atrial fibrillation. Frequency of atrial fibrillation is less than 1 %. The main purpose is analysis of clinical case in newborn with atrial fibrillation. Diagnostic and search effective methods of treatment atrial fibrillation in newborn’s is an actual problem in child cardiology. In this article described successful case of treatment life-threatening atrial fibrillation in newborn by electric cardioversion without cardiovascular pathology. Electric cardioversion in newborn’s with supraventricular tachycardia, which have hemodynamic disorders, is safe and effective therapy method.