The three most important are: 1  SaO2. Itâs a percentage that shows how saturated your arterial blood is with oxygen. 2  PaO2. Itâs the partial pressure of arterial oxygen. . 3  Itâs the same as SaO2, although itâs estimated by pulse oximetry. A normal value is 95-98%, although 90% or better is usually considered acceptable.
A peak flow meter is a portable, inexpensive, hand-held device used to measure how air flows from your lungs in one âfast blast.â In other words, the meter measures your ability to push air out of your lungs.
Each reading is compared with the initial or baseline reading, which is taken when you are breathing without any symptoms. Normal readings of peak flow meters depend on a person's age, sex, and height. For example, a 30 year old male that is 5'10'' tall should have a reading close to 622 liters per minute.Check the charts below for normal peak flow values (click on images to enlarge).Normal readings of peak flow meters are within 80-100% of the baseline reading.These readings are categorized in the green peak flow zone, which indicates stable lung function. When the readings are between 50 and 80% of the baseline reading, they are categorized in the yellow peak flow zone.or example, a 30 year old male that is 5'10'' tall should have a reading close to 622 liters per minute. Check the charts below for normal peak flow values (click on images to enlarge). Normal readings of peak flow meters are within 80-100% of the baseline reading.