Keeping track of your basic vital statistics used to involve a trip to the doctor's office where you would be subjected to expensive equipment that you couldn’t hope to understand. But now, with the ...

The last time you were in the emergency room after a horrible accident involving a PVC pressure vessel, a nurse probably clipped a device called a pulse oximeter onto one of your remaining fingers.

Before the coronavirus pandemic, most Americans had heard about pulse oximeters only via TV shows where EMTs shout out a patient’s “pulse ox” — or measure of oxygen in the blood. But when multiple ...