How to buy an ECG machine? Key features to consider when buying ECG machine.

In this article, we shall discuss some prominent features of ECG machines that can possibly shape your decision to buy the ECG machine of your choice.

Key features to consider when buying an ECG machine

Size of ECG machine

ECG machines come in various sizes since they are designed for use in different clinical situations. A Holter ECG monitor is a wearable ECG machine that allow recording of cardiac rhythm for an extended period of time. These devices are battery operated and batteries can be charged before monitoring is carried out.

Machines are comparatively larger size are routinely used in hospital settings; most being portable.

Power source & Battery backup

A rapidly emerging trend is the use of re-chargeable batteries in ECG machines. This not only increases convenience, but also decreases dependency on power supply to carry out ECG recording. In countries where electric power is scarce, rechargeable ECG machines have found wider acceptance in medical community. However, rechargeable batteries have to be replaced once they have reached the end of their lives. Therefore, you need to make sure that your supplier provides the batteries of the equipment that is being sold to you or your hospital.

The type and size of ECG machine paper

Different varieties of paper are used in ECG machines. Different brands and models utilize different ECG paper types. Sometimes ECG paper comes in rolls, while in other cases it comes as sheets that are joined together and then packed in a “ Z-fold “ pattern. Different widths and lengths are possible; therefore it is always a good idea to read the instructions before your place your order when buying ECG paper. The size/thickness/circumference of paper rolls may differ; hence only the right size will fit in the ECG machine’s feeder. Using paper rolls of inappropriate size may affect the working of ECG machine and hence ECG machine’s reading may become faulty. Always ask about paper supply and cost, before you make your decision to buy an ECG machine.


Some machines have dedicated keyboards to enter patient data and also to perform various functions when performing ECG. However, machines having complete keyboards tend to be expensive than ordinary machines. So, you should choose a machine based on your budget and also your labeling requirements of the ECG.

Display or Screen

Older machines were devoid of LCD displays and only LEDs or bulbs were used as indicators that assisted ECG technicians when performing ECGs. However, modern machines usually contain high resolution digital displays that make possible the visualization of ECG patterns before they are printed. This feature is very useful, since it prevents printing of faulty ECGs and saves a lot of hassle and paper. Moreover, in situation where you are out of paper, you can still see the ECG pattern on ECG machine’s digital display to make clinical decisions.

ECG Software Interpretation

As new algorithms to detect abnormalities in ECG patterns are becoming more and more perfect, automatic interpretation of ECGs is becoming increasingly common. Although it is impossible to rely on software interpretation of ECG completely; it is a great feature since it provides an alternate opinion regarding the diagnosis in question.

Connectivity to other equipment

Another important aspect to consider is the possibility of connecting your ECG equipment to other digital devices. Data sharing between devices is becoming increasingly common and if your ECG machine has the capability to connect with other electronic devices or health equipment – this is a plus!

Smart-phone based electrocardiography devices are also becoming available in some parts of the world. Devices that can provide 12-Lead recording of ECG on smart-phones have already been developed.

Is your staff comfortable with using a PC based ECG system?

Some ECG machines are designed to provide ECG output through computers. Although this is very convenient for many; others who lack the skill to operate computers, may find this distressing. Consequently, you should be aware of your hospital staffs’ preferences and capabilities, before you plan to buy an ECG machine.


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