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Although
several studies report that the prone position improves oxygenation in
50 - 75 % of patients with ARDS, when you turn your patient from the supine
to prone position, her oxygen saturation only marginally improves
(88% to 91%). Her oxygen saturation does not improve further despite turning
her every 6 hours. (See card: Prone Ventilation)
She is
currently on pressure-controlled ventilation with PEEP of 16 cm, distending
pressure of 18 cm H2O, FiO2 of 90% and a ventilatory rate of 20 per minute.
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