New research from South Africa shows that using a pulse oximeter to check oxygen levels after a Covid diagnosis really does save lives. For the study, 8,115 high-risk patients were given a pulse oximeter to use at home after Covid-19 was diagnosed. The study focused on the highest-risk patients, including older people, those who were pregnant or those with chronic illnesses like heart disease, hypertension or diabetes.
After a Covid diagnosis, the patients were given a pulse oximeter and received a follow-up call to make sure they were using it correctly. They were asked to record their oxygen saturation and heart rate twice a day, and instructed to call a doctor if the reading started to drop below 95 percent.
If the reading fell below 90 percent, they were instructed to go to the emergency room. And all the patients were told to seek emergency care if they had difficulty…
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