ECG Machine Buying Guide: Channels, Leads and Printing

An electrocardiograph (ECG or EKG machine) records the electrical activity of the heart. It is used in clinics, emergency departments, cardiology, wards and pre-operative assessment.

Channels

The number of channels is how many ECG traces the machine records and prints at once. Single-channel machines are the simplest. Three- and six-channel machines print more leads on each page, and 12-channel machines print all twelve standard leads together, which is easier to read and compare. Most hospitals and cardiology services prefer a 12-lead machine.

What to check

• Leads: confirm it records the standard 12 leads, with a clear display so staff can check the trace before printing.
• Printing: thermal printers are common. Check the paper width and how easy it is to buy the paper locally.
• Interpretation: some machines give an automatic measurement and interpretation. This is a support for the doctor, who makes the final reading.
• Filters: options for reducing muscle and mains interference give cleaner traces.
• Battery: useful for ward rounds and when the power is unreliable.
• Storage and transfer: internal memory or USB, and whether records can be exported to a computer.
• Accessories: patient cable, limb clips, chest electrodes and gel; check availability and cost.
• Build: a rugged, easy-to-clean body, especially if it will be moved between wards.

Madina Surgical Trader supplies this kind of equipment to hospitals, clinics and laboratories across Pakistan. Send us your requirements on WhatsApp and we will help you compare options.