pre-existing treatment limitation (e.g. dnr order) prisoner pregnant female children (\<18 years old) respiratory failure felt to be caused primarily by something other than covid-19 mechanical ventilation for \>48 hours prior to initiation of prone positioning contraindication to proning physician discretion

pre-existing treatment limitation (e.g. dnr order) prisoner pregnant female children (\<18 years old) respiratory failure felt to be caused primarily by something other than covid-19 mechanical ventilation for \>48 hours prior to initiation of prone positioning contraindication to proning physician discretion

pre-existing treatment limitation (e.g. dnr order) prisoner pregnant female children (<18 years old) respiratory failure felt to be caused primarily by something other than covid-19 mechanical ventilation for >48 hours prior to initiation of prone positioning contraindication to proning physician discretion

pre-existing treatment limitation (e.g. dnr order) prisoner pregnant female children (<18 years old) respiratory failure felt to be caused primarily by something other than covid-19 mechanical ventilation for >48 hours prior to initiation of prone positioning contraindication to proning physician discretion

1) pre-existing treatment limitation (e.g. dnr order); 2) prisoner; 3) pregnant female; 4) children (<=18 years old); 5) respiratory failure felt to be caused primarily by something other than covid-19 6) mechanical ventilation for >48 hours prior to initiation of prone positioning.

1) pre-existing treatment limitation (e.g. dnr order); 2) prisoner; 3) pregnant female; 4) children (<=18 years old); 5) respiratory failure felt to be caused primarily by something other than covid-19 6) mechanical ventilation for >48 hours prior to initiation of prone positioning.