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Cardiology Teaching Package

A Beginners Guide to Normal Heart Function, Sinus Rhythm & Common Cardiac Arrhythmias

5 Lead & 12 Lead Placements

If, by some chance you are asked to put somebody onto a cardiac monitor but you cannot remember lead placement, most modern machines have an anatomical drawing on the block that the wires are connected to, as shown below.

5-lead placement

Image: 5 lead connection box diagram

5 lead connection box diagram

12-lead placement

Image: 12 lead connection box diagram

12 lead connection box diagram

Even for experienced CCU nurses, it is reassuring to know that this diagram is there when things get hectic and confusing, just the time for mistakes to occur.

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