inclusion criteria: 1. severe pulmonary coronavirus disease 19 (covid 19) with suspect for microclots (microvascular covid-19 lung vessels obstructive thromboinflammatory syndrome) 2. p/f ratio \<200 mmhg\> 70 mmhg 3. a.) contrast ct scan positive for pulmonary thrombosis, or b.) contrast ct scan negative for pulmonary thrombosis: * d-dimer \> 10 mcg/ml, or * 5 \< d-dimer \< 10 mcg/ml and c reactive protein (crp) \> 100 mg/dl

inclusion criteria: 1. severe pulmonary coronavirus disease 19 (covid 19) with suspect for microclots (microvascular covid-19 lung vessels obstructive thromboinflammatory syndrome) 2. p/f ratio \<200 mmhg\> 70 mmhg 3. a.) contrast ct scan positive for pulmonary thrombosis, or b.) contrast ct scan negative for pulmonary thrombosis: * d-dimer \> 10 mcg/ml, or * 5 \< d-dimer \< 10 mcg/ml and c reactive protein (crp) \> 100 mg/dl

inclusion criteria: severe pulmonary coronavirus disease 19 (covid 19) with suspect for microclots (microvascular covid-19 lung vessels obstructive thromboinflammatory syndrome) p/f ratio <200 mmhg> 70 mmhg a.) contrast ct scan positive for pulmonary thrombosis, or b.) contrast ct scan negative for pulmonary thrombosis: d-dimer > 10 mcg/ml, or 5 < d-dimer < 10 mcg/ml and c reactive protein (crp) > 100 mg/dl

inclusion criteria: severe pulmonary coronavirus disease 19 (covid 19) with suspect for microclots (microvascular covid-19 lung vessels obstructive thromboinflammatory syndrome) p/f ratio <200 mmhg> 70 mmhg a.) contrast ct scan positive for pulmonary thrombosis, or b.) contrast ct scan negative for pulmonary thrombosis: d-dimer > 10 mcg/ml, or 5 < d-dimer < 10 mcg/ml and c reactive protein (crp) > 100 mg/dl

inclusion criteria: 1. severe pulmonary coronavirus disease 19 (covid 19) with suspect for microclots (microvascular covid-19 lung vessels obstructive thromboinflammatory syndrome) 2. p/f ratio <200 mmhg> 70 mmhg 3. a.) contrast ct scan positive for pulmonary thrombosis, or b.) contrast ct scan negative for pulmonary thrombosis: - d-dimer > 10 mcg/ml, or - 5 < d-dimer < 10 mcg/ml and c reactive protein (crp) > 100 mg/dl

inclusion criteria: 1. severe pulmonary coronavirus disease 19 (covid 19) with suspect for microclots (microvascular covid-19 lung vessels obstructive thromboinflammatory syndrome) 2. p/f ratio <200 mmhg> 70 mmhg 3. a.) contrast ct scan positive for pulmonary thrombosis, or b.) contrast ct scan negative for pulmonary thrombosis: - d-dimer > 10 mcg/ml, or - 5 < d-dimer < 10 mcg/ml and c reactive protein (crp) > 100 mg/dl