Clinical Evaluation of Nasopharyngeal, Oropharyngeal, Nasal Swabs, and Saliva for the Detection of SARS-CoV-2 by Direct RT-PCR.

Nasopharyngeal swab (NPS) and oropharyngeal swab (OPS) are the most widely used upper respiratory tract specimens for diagnosis of SARS-CoV-2 using RT-qPCR. In contrast, nasal swab (NS) and saliva (SS), recently recommended by the WHO, are rarely used, and their test accuracy is limited. The method for direct RT-PCR detection of SARS-CoV-2 does not require an RNA extraction and is faster and easier than standard RT-PCR tests with RNA extraction.

[Multislice spiral computed tomography of the heart in dilated cardiomyopathy: possibilities in the verification of myocarditis (in comparison with myocardial biopsy) and in the evaluation of prognosis].

Aim: To investigate whether intravenous contrast-enhanced multislice spiral computed tomography (computed tomography) (MSCT) versus myocardial morphological examination can diagnose myocarditis and the non-inflammatory causes of dilated cardiomyopathy (DCM) and evaluate prognosis in patients with the latter.

Subjects And Methods: A study group consisted of 130 patients, including 95 men (46.8±11.

[Idiopathic arrhythmias: possibilities of complex nosological diagnosis, and differentiated treatment].

Aim: of the study was to elucidate nosological nature of "idiopathic" arrhythmias by means of complex clinical-morphological examination and to assess efficacy of differentiated (including etiotropic and pathogenetic) treatment.

Material And Methods: We examined 190 patients (117 women, mean age 45.33 ± 14.

[Dilated cardiomyopathy as clinical syndrome: experience with nosological diagnostics with biopsy and treatment approaches].

Aim: To study possibility of nosological diagnosis in patients with dilated cardiomyopathy (DCMP) with use of myocardial biopsy.

Material And Methods: The trial enrolled 62 patients (23 females) with DCMP syndrome (end diastolic left ventricular size > 5.5 cm, ejection fraction < 55%).

[Modes of functioning of an ensemble of discrete active elements in a membrane].

The behaviour of multichannel system as system of cellular automata was investigated. The action of the every channel is a stationary markov process. Computer simulation of the multichannel system demonstrate that according the values of parameters, system demonstrate the various types of behaviour: the weak oscillations about some stationary value, synchronous and chaotic oscillations and beatings.