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Sunday, June 13, 2021

Two symptoms that you can monitor at home have higher risk of dying from Covid-19

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Kamal Saini
Kamal S. has been Journalist and Writer for Business, Hardware and Gadgets at Revyuh.com since 2018. He deals with B2b, Funding, Blockchain, Law, IT security, privacy, surveillance, digital self-defense and network policy. As part of his studies of political science, sociology and law, he researched the impact of technology on human coexistence. Email: kamal (at) revyuh (dot) com

Abnormal blood oxygen levels and breathing or respiratory rate are strong predictors of poor outcomes in hospitalized patients, the study says.

The research, published in the journal Influenza and Other Respiratory Viruses, carried out on 1,095 patients hospitalized with COVID-19, found that two easily measurable symptoms of health, breathing rate, and blood-oxygen saturation are clearly predictive of higher mortality.

Concretely, the authors stated, anyone who receives a positive COVID-19 screening test can comfortably monitor these two symptoms at home.

This text is lacking in current guidance from the CDC, which informs people with COVID-19 to seek medical attention when they experience overt symptoms such as “trouble breathing” and “persistent pain or pressure in the chest” – indications that may be absent even when respiration and blood oxygen have reached dangerous levels, the authors say.

These findings apply to the lived experience of the majority of patients with COVID-19: being at home, feeling anxious, wondering how to know whether their illness will progress and wondering when it makes sense to go to the hospital.

says Dr. Neal Chatterjee of the University of Washington School of Medicine.

Chatterjee and fellow cardiologist Dr. Nona Sotoodehnia were co-authors of the research.

According to them, the findings highlight that, for some people with COVID-19, by the time they feel bad enough to come to the hospital, a window for early medical intervention might have passed.

Initially, most patients with COVID don’t have difficulty breathing. They can have quite low oxygen saturation and still be asymptomatic.

says otoodehnia.

If patients follow the current guidance, because they may not get short of breath until their blood oxygen is quite low, then we are missing a chance to intervene early with life-saving treatment.

The team investigated the cases of 1,095 patients(from March 1 to June 8, 2020) age 18 and older who were admitted with COVID-19 to UW Medicine hospitals in Seattle or to Rush University Medical Center in Chicago.

While patients frequently reported hypoxemia (low blood-oxygen saturation; 91 percent or below for this study) or tachypnea (fast, shallow breathing; 23 breaths per minute for this study), few reported feelings short of breath or coughing regardless of blood oxygen.

The study’s primary measure was all-cause in-hospital mortality. Overall, 197 patients died in the hospital. Compared to those admitted with normal blood oxygen, hypoxemic patients had a mortality risk 1.8 to 4.0 times greater, depending on the patient’s blood oxygen levels.

Similarly, compared to patients admitted with normal respiratory rates, those with tachypnea had a mortality risk of 1.9 to 3.2 times greater. By contrast, other clinical signs at admission, including temperature, heart rate, and blood pressure, were not associated with mortality.

Nearly all patients with hypoxemia and tachypnea required supplemental oxygen, which, when paired with inflammation-reducing glucocorticoids, can effectively treat acute cases of COVID-19.

We give supplemental oxygen to patients to maintain blood oxygen saturation of 92% to 96%. It’s important to note that only patients on supplemental oxygen benefit from the life-saving effects of glucocorticoids.

adds Sotoodehnia.

On average our hypoxemic patients had an oxygen saturation of 91% when they came into the hospital, so a huge number of them were already well below where we would’ve administered life-saving measures. For them, that care was delayed.

The findings are relevant for family-medicine practitioners and virtual-care providers, who are typically first-line clinical contacts for people who have received a positive COVID-19 test result and want to monitor meaningful symptoms.

“We recommend that the CDC and World Health Organization consider recasting their guidelines to account for this population of asymptomatic people who actually merit hospital admission and care,” Chatterjee said.

But people don’t walk around knowing WHO and CDC guidelines; we get this guidance from our physicians and news stories.

Sotoodehnia recommended that people with positive COVID-19 test results, particularly those at higher risk of adverse outcomes due to advanced age or obesity, buy or borrow a pulse oximeter and monitor for blood oxygen below 92%. The clip-like devices fit over a fingertip and can be purchased for under $20.

An even simpler measure is respiratory rate — how many breaths you take in a minute. Ask a friend or family member to monitor you for a minute while you’re not paying attention to your breathing, and if you hit 23 breaths per minute, you should contact your physician.

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