Ventilation-perfusion mismatches common in COVID-19 hypoxaemia
Ventilation-perfusion mismatches in the lungs contribute to hypoxaemia in patients with COVID-19, researchers report.
Doctors from Massachusetts General Hospital in Boston, US, used dual-energy CT imaging to characterise lung perfusion in three patients with COVID-19 who presented with elevated concentrations of D-dimer and clinical suspicion of pulmonary emboli.
No pulmonary emboli were observed but there were “striking perfusion abnormalities that have not been previously described”.
“In addition to the typical CT