adult; ambulance; anticoagulation; complication; conference abstract; coronavirus disease 2019; diagnosis; endothelium injury; heart arrest; heart failure with reduced ejection fraction; heart right ventricle; hospitalization; human; hypercoagulability; incidence; lung embolism; major clinical study; male; medical history; middle aged; morbidity; mortality; nonhuman; palliative therapy; pandemic; physician; prevention; respiratory distress; respiratory failure; respiratory tract disease; risk factor; Severe acute respiratory syndrome coronavirus 2; sinus tachycardia; surgery; Sweden; thrombectomy; thrombosis; upper respiratory tract; vaccination; venous thromboembolism