Not to quibble since I may not be understanding, but isn’t the normal PaO2/FiO2 ratio typicallylessthan 500 at sea level? Assuming a PaO2 of 100 and FiO2 of 0.21, the ratio would be about 476, i.e. less than 500. Thanks,
When PaO2 was decreased to physiological values (less than 13.3 kPa), with a low normal PaCO2 (less than 5.3 kPa), the decrease in PNA by HFV and PEEP (0.5 kPa) was decreased to 25%. It was concluded that the frequency of ventilation per se has little or no effect on PNA in the ...