Marked self-limiting sinus bradycardia in COVID-19 patients not requiring therapy in the intensive care unit - case series report.

Unlabelled: Cardiovascular complications of the COVID-19 comprise cardiac arrhythmias, including sinus bradycardia (SB).

Case Reports: The authors present clinical data of 19 hospitalized patients (12 males), aged 20-73 years, with marked (less than 45/min during daily hours) self-limiting SB. None of them had SB at admission or earlier, none had used cardiovascular medications potentially decreasing the heart rate.

[Central retinal artery occlusion in a 21-year-old male amateur bodybuilder].

The etiology of central retinal artery occlusion (CRAO) is usually associated with atherosclerotic risk factors and the presence of intravascular (carotid artery, aortic arch) or intracardiac embolic material. At young age, CRAO may be a manifestation of inherited or acquired thrombophilia. The authors present a case of CRAO in a 21-year-old, previously healthy, non-smoking male, with neither metabolic nor hemostatic abnormalities and with normal echocardiography.