[Cardiohemodynamic Changes and Cardiac Arrhythmias After Coronavirus Infection].

Aim      To study changes in cardiohemodynamic alterations of the myocardium and heart rhythm disorders at 3 and 6 months following the coronavirus infection.Material and methods   EchoCG, ECG Holter monitoring, and Doppler ultrasonography of hepatolienal blood vessels were performed for 77 patients (mean age, 35.9 years) at 3 and 6 months after coronavirus infection.

[Adherence to guidelines on management of acute coronary syndrome in Russian hospitals and outcomes of hospitalization (data from the RECORD-2 Registry)].

Background: Complete following existing guidelines for management of acute coronary syndrome (ACS) is known to be associated with better outcomes. Partly this is explained by lesser adherence to recommendations in high risk patients. Aim of our study was to assess relationship between degree of following current guidelines and in hospital outcomes independently from initial assessment of risk.

[Properties of the acoustic neurons of the dorsal nucleus of the medulla oblongata in the frog Rana ridibunda].

Studies have been made of the spontaneous activity and ipsilaterally evoked impulsation in single cells of the medullary auditory region of the frog Rana ridibunda. Approximately 70% of the neurones in the dorsal nucleus exhibited spontaneous firing with an average frequency from 1 to 40 imp/s. Distribution of intervals between impulses (excluding the shortest ones) was found to be close to exponential.