The first benefit of having a blood pressure monitor is that you are able to monitor your pressure throughout the day unlike with making a visit to the doctor which only happens once in a while.
Taking regular measurements of your blood pressure offers a more accurate reading when the data is compiled. This is because some people may have a heightened blood pressure due to the hospital environment. Others may have a lower blood pressure whenever they are in a calm and relaxed state due to feeling safe.
Home blood pressure monitors are simple to use. Some devices even have a chord that can be easily connected to a smartphone.
Blood pressure monitors however do have their limitations. The patient movement for one may cause the pulses to vary. For example, when shivering or in case of convulsions.
Sometimes there are rapid changes in the pressure when the measurements are being taken making obtaining an accurate reading a challenge.
The rate of heartbeat also affects the accurately of the readings. Sometimes the heart beats fast while other times it beats slow.
For people who are overweight or have quite a bit of fat under their skin, this may affect the strength of the signal which becomes dampened before reaching the monitor. It might affect the accuracy of the signal.