But her request for supplemental oxygen while hospitalized was denied, Starr said, because readings from a pulse oximeter on her finger falsely indicated that she was getting plenty of air on her own.

The doctors and nurses didn’t believe Tomisa Starr was having trouble breathing. Two years ago, Starr, 61, of Sacramento, California, was in the hospital for a spike in her blood pressure.

The Food and Drug Administration’s recommendations apply to pulse oximeters, which are clip-on devices used in hospitals and medical clinics to ensure patients are getting enough oxygen.

The Pulse Cipher follows in the footsteps of the Sky Cipher and Ghost Cipher, offering users a look at the device’s inner workings thanks to its transparent shell at the front of the controller.

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Researchers from UCSF are leading an effort to find out which pulse oximeters work equally well on all skin colors. NBC News' Erika Edwards reports.Jan. 19, 2025 ...

Wearables are getting serious about health, and the use of health and wellness features, such as heart-rate monitoring and pulse-oximeter tracking, has become increasingly popular. But why measure ...