Prone positioning is a simple intervention that can be done in most circumstances, is compatible with all forms of basic respiratory support and requires little or no equipment in the conscious patient.
the potential benefits of proning include:
• Improved VQ matching and reduced hypoxemia (secondary to more homogeneous aeration of lung and ameliorating the ventral-dorsal trans-pulmonary pressure gradient)
• Reduced shunt (perfusion pattern remaining relatively constant while lung aeration becomes more homogenous)
• Recruitment of the posterior lung segments due to reversal of atelectasis
• Improved secretion clearance
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