Types of tonometers
Science does not stand still, on sale you can find many models for measuring AD, both mercury, mechanical and automatic, not requiring active participation of the patient in the measurement. Modern priobres allow a fairly accurate measurement of pressure.
Classic tonometers to measure the pressure as accurately as possible. They are ideal for controlling AD when high precision measurement is required, but in everyday life it is quite problematic. Basically, such devices can be found in the cardiologist’s office.
The most common and accurate are mechanical tonometers. They are safe, unlike mercury tonometers, convenient to use and accurate enough, compared to automatic devices. Their use will require certain skills from the patient, when choosing you need to pay attention to: the
- quality of the cuff attachment;
- presence of a built-in stethoscope;
- metal bracket on the cuff;
- model description;
- quality of fabric from which the cuff is made;
- strength of tube mounts, stethoscope and pressure cylinder pressure.
The copper-beryllium membrane will last longer in the measuring mechanism. Such tonometers cost substantially more, but also serve much longer without distorting the measurement reading, allowing the pressure to be measured as accurately as possible. Cheap models do not guarantee accuracy of readings and fail significantly faster. Remember, a good tonometer can’t cost cheap.
These tonometers are the most convenient for self-measuring pressure, they fully automate the process, allowing you to save the measurement results. Disadvantages include insufficient accuracy of the readings and certain rules that the patient must observe during the measurement.
By choosing an automatic tonometer, it is better to choose a shoulder cuff device, they are more accurate than devices measuring wrist pressure, and those instruments measuring pressure on The finger of the hand can not guarantee the correct result, so it is better not to acquire them. There are models that measure rhythmicity and pulse quality, when buying, please ask the provisions with these parameters.
If the patient has poor vision, it is better to buy a tonometer with a large LCD screen, where all the measurement values are displayed.
In addition, during measurement, the instructions described in the annex to the instrument must be followed, the cuff and tube of the device cannot be touched during the pressure measurement, and the patient himself and his hand must be be in one certain position to measure the pressure correctly