inclusion criteria: positive covid test endotracheal intubation p:f \<150 within 1hours of inclusion on at least 60% fio2, 10cmh20 peep treating physician plans to implement prone positioning imminently housed in the uab micu.

inclusion criteria: positive covid test endotracheal intubation p:f \<150 within 1hours of inclusion on at least 60% fio2, 10cmh20 peep treating physician plans to implement prone positioning imminently housed in the uab micu.

inclusion criteria: positive covid test endotracheal intubation p:f <150 within 1hours of inclusion on at least 60% fio2, 10cmh20 peep treating physician plans to implement prone positioning imminently housed in the uab micu.

inclusion criteria: positive covid test endotracheal intubation p:f <150 within 1hours of inclusion on at least 60% fio2, 10cmh20 peep treating physician plans to implement prone positioning imminently housed in the uab micu.

inclusion criteria: 1) positive covid test; 2) endotracheal intubation; 3) p:f <150 within 1hours of inclusion; 4) treating physician plans to implement prone positioning imminently; 5) housed in the uab micu.

inclusion criteria: 1) positive covid test; 2) endotracheal intubation; 3) p:f <150 within 1hours of inclusion; 4) treating physician plans to implement prone positioning imminently; 5) housed in the uab micu.