Blood Pressure Monitors

How does a blood pressure monitor work

Blood pressure monitors work by using either an oscillometric method or an auscultatory method.

In the oscillometric method, the device uses an inflatable cuff wrapped around the upper arm to measure blood pressure. This is achieved by first inflating the cuff to stop blood flow and then slowly deflating it to measure both systolic and diastolic blood pressure. As the cuff deflates, it measures the oscillations (pulses) of the blood that flow in and out.

In the auscultatory method, the device uses an inflatable cuff and a stethoscope. First, the cuff is inflated to stop blood flow, and then it is slowly deflated. As the cuff deflates, the doctor or technologist listens with the stethoscope for the Korotkoff sounds. These are rhythmic tapping and thumping sounds, which indicate changes in the pressure in the cuff and measures. Systolic and diastolic pressure are recorded to determine the patient's blood pressure. Additionally, a clock or timer is used to time the occurrence of the Korotkoff sounds accurately. The procedure is repeated three times, and the average of the three results is taken as the patient's blood pressure.

What to look out for when buying a blood pressure monitor online

1. Ease of Use: Look for a monitor that is easy to use and understand.
2. Accuracy: Ensure the monitor you purchase is accurate and reliable.
3. Battery Life: Check for monitors with long battery life.
4. Cost and Value for Money: Look for monitors that offer quality and affordability.
5. Comfort and Ergonomics: Look for monitors that are comfortable to use and designed with ergonomic considerations in mind.
6. Compatibility with Smartphones: Check to make sure the monitor you buy is compatible with your smartphone.
7. Features: Consider the features you need, such as cuff size and Bluetooth connection.
8. Brand Reputation and After-Sales Service: Investigate a brand's reputation and after-sales service.

Authored & Reviewed By

Dr Giuseppe Aragona

Doctor

This content has been written and checked for quality and accuracy by Dr. Giuseppe utilises his extensive experience in general practice to ensure the accuracy and safety of the website's content.

Published on: 13/01/2023 Reviewed on: 13/01/2023