is 2.18 MB, has a resolution of 2048x1548 pixels and was uploaded on February 6, 2020 @ 3:53 pm by user: sophnn. It is filed under the tags: system, exhaled nitric oxide, spirometry, pulse oximetry, health care. Click the blue button at the top to freely download: Bronchial Asthma Spirometer Spirometry FEV1/FVC Ratio Pulse Oximeters Peak Expiratory Flow png.