Pulse Oximeter Covid 19 | How Can Pulse Oximeter Detect and Help You During Covid 19
Pulse oximeter is a small, lightweight device used to monitor the amount of oxygen carried in the body. Pulse oximeters used at home can detect hypoxia associated with acute covid-19. Low blood oxygen—technically, hypoxaemia but usually referred to as hypoxia—can be defined as a measured oxygen saturation below 94% in the absence (or below 88% in the presence) of chronic lung disease. In most patients who die of acute covid-19, the initial illness advances insidiously, sometimes with “silent hypoxia” (hypoxia without clinically perceptible symptoms of dyspnoea. The underlying pathology in covid-19 related hypoxia is probably a ventilation-perfusion mismatch,5 caused by a combination of intrapulmonary shunting, loss of lung perfusion regulation, intravascular microthrombi, and reduced lung compliance leading to alveolar collapse. Many patients hospitalised with acute covid-19 have severe hypoxia.478 Hypoxia, silent hypoxia, and the need for supplementary oxygen are all independent predictors of worse outcomes in covid-19.
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