Medical Devices & Technology Archive

Five smart watches capable of recording an electrocardiogram and detecting atrial fibrillation have been cleared for the market by the FDA. The devices can continuously monitor a person's pulse for an abnormally rapid heart rate and tell the wearer when to record an ECG, which involves opening an app and touching the side of the watch for 30 seconds. But it's not clear if using this feature can improve a person's health. There are many other ways to screen for afib. These strategies, which include simply checking one's pulse or wearing a heart monitor, depend on a person's afib risk and symptoms.

For people who buy over-the-counter hearing aids, getting the devices is only a first step toward better hearing. It takes time to learn how to use, wear, and adjust the hearing aids, especially during the first two weeks. Tips to ease through this adjustment period include wearing devices at home for at least a few hours per day, and longer if possible; allowing soft sounds to be louder than normal at first; and learning to switch device settings for changes in environmental noise, such as going from a quiet street into a noisy restaurant.

A 2023 study suggests that the type of technology used in smart watches to measure the heart's electrical activity may have the potential to detect early signs of heart failure or atrial fibrillation.

ECG readings taken with a smart watch may be just as accurate as a traditional ECG done in a medical setting. But the notion of using a smart watch to diagnose a heart attack is still years away. One main reason: obtaining an ECG with a smart watch requires carefully holding the back of the watch on the wrist and at eight specific locations on the chest and abdomen. Quality control and regulatory issues are other important hurdles that need to be addressed. But experts believe improved smart watches with enhanced diagnostic ability may be on the market within a decade.

Maximum heart rate refers to the upper limit of what a person's cardiovascular system can handle during exercise. It can be estimated by subtracting the person's age from 220. Target heart rates (which range from 64% to 93% of the maximum) can help people know if they are doing moderate or vigorous exercise. Physical activity guidelines recommend that people get at least 150 minutes of moderate-intensity exercise or 75 minutes of vigorous-intensity exercise, or a combination of both, per week.

The Watchman, a tiny, basket-like device placed in the heart's left atrial appendage, is designed to prevent blood clots traveling from the heart to the brain and causing stroke. People with atrial fibrillation who face a high risk of bleeding from anti-clotting drugs may be good candidates for the device.

A gene editing technique that permanently shuts down a cholesterol-raising protein called PCSK9 is being tested in heart attack survivors with an inherited form of high cholesterol. The one-time infusion contains tiny particles that contain the editing tools, which travel through the blood to the liver and changes the cells that produce the protein. If early data show the treatment to be safe and effective, the therapy potentially could be used in people who have "garden variety" high cholesterol.

The modernization of standard home medical devices has made monitoring health easier than ever. These gadgets include thermometers, scales, blood pressure monitors, and pulse oximeters. Gadget features that are especially helpful for older adults are easy operation and large, lighted readouts. It’s important that some home medical devices, such as blood pressure monitors and pulse oximeters, have a seal of approval from an accredited agency, such as the FDA for pulse oximeters or the Association for the Advancement of Medical Instrumentation for blood pressure monitors.

Over-the-counter hearing aids are now available in stores and online. They're regulated by the FDA, they don't require a prescription from a doctor, and they're cheaper than prescription hearing aids. But over-the-counter devices are not right for everyone. They're meant only for adults with perceived mild to moderate hearing loss. Before buying a pair, a person should do some homework to find devices with the right fit and features, including a trial period that allows the buyer to return them if they aren't working out.

A majority of people in the United States need a large or extra-large blood pressure cuff. To ensure an accurate reading, people should check their arm circumference to make sure they're using the correct cuff size.