04Nov 2022
Intrapulmonary Bronchopulmonary Anastomoses in Severe COVID-19–related Acute Respiratory Failure

Intrapulmonary Bronchopulmonary Anastomoses in Severe COVID-19–related Acute Respiratory Failure

The pathomechanism of “silent” severe hypoxemia leading to acute respiratory failure in patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is not understood. The presence of low PaO2/FiO2 ratios was found to be strongly linked to large numbers of microbubbles, suggesting marked intrapulmonary shunt physiology. A recent study using dual-energy computed tomography in a cohort of 35 patients with COVID-19 found perfusion disturbances characterized by the coexistence of intrapulmonary shunts, dead space, and high and low gas/blood ratios.

  • #critical care

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