Patients with moderate and severe COVID-19 infection
Patients with severe COVID-19 infection were more likely to have a
higher respiratory rate, lower oxygen, and higher fibrinogen, troponin
and BNP concentrations as compared to patients with moderate COVID-19
infection (Table 3). Despite higher BNP or troponin concentrations,
conventional echocardiographic parameters of left ventricular structure
or systolic/diastolic functions were not different between groups. Basal
coronary flow velocity was significantly higher and CFVR was
significantly lower in patients with severe COVID-19, despite a lack of
difference between groups in terms of hyperemic flow velocity reserve
(Table 4). Neither basal nor hyperemic heart rate were different between
groups, but there was a trend towards higher basal heart rate in severe
COVID-19 patients.