Understanding Home Heart Monitoring Devices

Technology that once belonged only in clinics is now available for the home. Several kinds of device can provide information related to the heart and circulation, from the familiar blood pressure cuff to wearable sensors. Each measures something different, and none replaces a medical assessment. This guide explains what each type does.

Blood pressure monitors

What they measure: systolic and diastolic blood pressure and pulse rate.

Who uses them: people with high blood pressure or at risk of it, and anyone whose doctor has asked for home readings.

What to know: automatic upper arm monitors are generally preferred. Accuracy depends on a validated device, the right cuff size and correct technique: seated, rested, arm supported at chest height. Our range includes the Automatic Upper Arm Blood Pressure Monitor; check any model you are considering against a validated device list.

Heart rate monitors

What they measure: the number of heartbeats per minute.

Types:

• Manual pulse check: two fingers on the wrist and a clock. No device needed.
• Chest straps: detect the heart’s electrical signals; often used in sport.
• Wrist wearables: smartwatches and fitness bands use light sensors on the skin to estimate heart rate continuously.
• Blood pressure monitors and pulse oximeters also display pulse.

What to know: according to the American Heart Association, a normal resting heart rate for adults is usually between 60 and 100 beats per minute. Wearables are convenient for trends, though readings can be affected by movement, fit and skin contact.

Personal ECG devices

What they measure: the heart’s electrical activity over a short period, typically 30 seconds, through one or a few leads.

Types: handheld or card-sized devices that you touch with your fingers, and some smartwatches with an ECG function.

What to know: some of these devices are cleared by regulators to detect signs of certain rhythm irregularities, such as atrial fibrillation. They record far less information than the 12-lead ECG used in clinics and cannot detect a heart attack. A normal result does not exclude a heart problem. Share recordings with your doctor and never use them to delay seeking help for chest pain.

Pulse oximeters

What they measure: an estimate of the oxygen saturation of the blood (SpO2) and the pulse rate, using light passed through a fingertip.

Who uses them: mainly people with lung or heart conditions whose doctor has asked them to monitor oxygen levels.

What to know: the FDA cautions that pulse oximeters have limitations and that accuracy can be affected by poor circulation, skin pigmentation, skin thickness, skin temperature, tobacco use and fingernail polish. Do not rely on a reading alone; pay attention to how you feel. See our Fingertip Pulse Oximeter.

Weight scales

What they measure: body weight.

Why they matter for the heart: maintaining a healthy weight reduces strain on the heart. People with heart failure are often asked to weigh themselves every morning, because a rapid gain can signal fluid retention. They are told what change to report.

What to know: weigh at the same time of day, in similar clothing, on a hard, flat floor. See our Digital Body Weight Scale.

Activity and sleep trackers

Step counts, active minutes and sleep estimates can motivate healthy habits. They are wellness tools, not medical measurements.

Medical device or wellness product?

The FDA distinguishes between medical devices, which are intended to diagnose, treat or monitor a condition and are subject to regulatory review, and general wellness products. Check the product information to see which category a device falls into and what it is intended for.

Choosing what you need

More devices do not mean better health. Consider:

1. What has your doctor asked you to monitor?
2. Will the result change what you or your doctor do?
3. Is the device validated or cleared for that purpose?
4. Can you use it correctly and consistently?

For most people, a validated blood pressure monitor and a reliable scale cover the essentials.

Using devices safely

• Read and follow the instructions.
• Record results and share them with your healthcare team.
• Do not change medicines on the basis of home readings without advice.
• Keep devices clean, stored properly and maintained.

What no home device can do

No home device can diagnose a heart attack or stroke. Call 911 for chest pain or pressure, shortness of breath, pain spreading to the arm, jaw or back, sudden weakness or numbness, confusion, difficulty speaking or fainting, whatever your device shows.

The bottom line

Each home heart device answers a specific question. Choose the ones that match your doctor’s advice, use them properly and treat the results as information to share, not as a diagnosis. Browse our heart and blood pressure department.

Sources

1. Centers for Disease Control and Prevention. Measuring Your Blood Pressure.
2. American Heart Association. All About Heart Rate.
3. U.S. Food and Drug Administration. Home Use Devices.
4. U.S. Food and Drug Administration. Pulse Oximeters.