A P/F ratio of 225 is equivalent to a pO2 of 45 mmHg, which is significantly < 60 mmHg on room air. How to Calculate FIO2 from Liters A nasal cannula provides oxygen at adjustable flow rates in liters of oxygen per minute (L/min or “LPM”). The actual FIO2(percent oxygen) deli...
aspace is telescoped with the prison camp, 空间挤撞与囚犯集中营, [translate] aThe MCV 200 utilizes an internal compressor, will accept a 50 psig oxy-gen source, and has a Venturi system that mixes room air with oxygen that can be set to deliver an FiO2 of either 0.65 or 1.0 when 50...
One study37 showed that in elderly patients, elevation of the respiratory rate can be the initial presenting sign of pneumonia, preceding other clinical findings by as much as 1 to 2 days. Indeed, tachypnea is present in more than 60% of all patients, being found more often in elderly ...
So if you place your tachypneic patient with PIF rate of 120L/min and minute volume >20L/min on a 15L/min NRB mask, you may not be helping them as much as you think. I am going to get into this point a bit later on in this review when we discuss the concept of oxygen ...
(oxygen and/or medical air) through nasal cannulae at high gas flow rates. What is a “high” gas flow rate is still not uniformly defined (some studies say >2 L/min and others >4 L/min). In physiological terms, to provide the true benefits of “high flow”, the gas flow rate ...