Fingertip pulse oximeter was invented by Millikan in the 1940s to monitor the concentration of oxygen in arterial blood, an important indicator of the severity of COVID-19. Yonker now explains how ...
Long-term oxygen inhalation can relieve pulmonary hypertension caused by hypoxia, reduce polycythemia, reduce blood viscosity, reduce the burden of right ventricle, and alleviate the occurrence and...
