Whichever type you use, technique drives accuracy. A monitor is a tracking tool — diagnosis and treatment belong to your doctor.
Why upper-arm monitors are generally preferred
Most clinicians and medical organizations recommend a validated upper-arm monitor as the home standard. The upper arm sits naturally at heart level when supported on a table, and the brachial artery there is what clinic measurements are based on. That makes upper-arm readings more consistent and easier to compare against your doctor’s device.Where wrist monitors fall short
Wrist arteries are smaller and the wrist is easy to hold at the wrong height — even a few inches above or below heart level can shift a reading noticeably. Wrist monitors are also more sensitive to hand and wrist position and movement. They can still be helpful for people who can’t use an arm cuff (for example, due to a very large arm or arm pain), but they require extra care.Getting an accurate reading from a wrist monitor
If you do use a wrist model, rest your elbow on a table and raise your wrist so it sits at heart level, stay still, and don’t talk. Take multiple readings and compare against a clinic reading when you can.Cuff size still matters
With an upper-arm monitor, the cuff must fit your arm — too small reads high, too large reads low. Measure your bare upper arm and match the monitor’s range before buying.SonoHealth’s approach
SonoHealth’s BPpro and BPMAX are upper-arm home blood pressure monitors, the style most clinicians recommend for consistent home readings. You can compare them at SonoHealth.com.Related: Home Monitoring Guide · How to Measure at Home · Normal Blood Pressure Ranges · White-Coat Hypertension