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Home > News > Research

Oxygen saturations ‘more useful’ than temperature in elderly COVID screening


4 May 2021
Pulse,Oximeter,On,Finger,Is,A,Good,Way,To,Test

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A lower baseline temperature means a fever may be overlooked.

Oxygen saturations are “more useful” than a temperature when screening the elderly for COVID-19, according to a new paper.



Commentary by Washington State University College of Nursing Associate Professor Catherine Van Son and Clinical Assistant Professor Deborah Eti proposes that taking a temperature is a less useful indicator of infection in older adults and that a pulse oximeter should be used instead.

The paper, published in Frontiers in Medicine, said baseline temperatures are lower in older adults.

A lower baseline temperature means a fever may be overlooked using the standard definition of 38°C or greater.

“In fact,” the paper says, “upwards of 30% of older adults with serious infections show mild or no fever.”


Common signs may be dismissed.

Other common signs of COVID may also be dismissed and attributed to aging, such as fatigue, body aches, and loss of taste or smell.

Additionally, some COVID-19 patients have no visible signs of having low oxygen levels, such as shortness of breath, yet have oxygen saturation below 90%.

Asymptomatic hypoxia can be associated with extremely poor outcomes, reinforce the authors.

Van Son and Eti say inexpensive, portable pulse oximeters should be considered for wide use in COVID-19 screenings of older adults because the devices can detect changes in oxygen saturation without other indications of infection.


“Detecting (asymptomatic hypoxia) is critical for the prevention of infection progression and initiating treatment,” they wrote.

“Earlier interventions could help patients avoid highly invasive procedures (i.e., intubation) and improve the allocation of scarce healthcare resources.”



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