What should you know about a Nihon Kohden ECG machine?

An ECG, or electrocardiogram, captures electrical signals as the heart beats. Adhesive electrodes are placed on the chest and sometimes the limbs, while you lie still and breathe normally. The recording can help a clinician assess heart rate, rhythm, conduction, and changes that may fit reduced blood flow or other heart problems. The machine produces a tracing; a trained clinician must interpret it with your symptoms, examination, medicines, and medical history. A normal-looking tracing does not rule out every intermittent or non-cardiac cause of symptoms. Learn more about the [ECG Machine](/technology/ecg-machine/) and [Electrocardiogram](/treatments/diagnostics-and-screening/ecg/).

Wear clothing that allows access to the chest, wrists, and ankles. Tell the team about chest discomfort, palpitations, breathlessness, fainting, implanted devices, and medicines. Avoid applying oily lotion where electrodes will be placed because it can reduce contact. Keep still and avoid talking during the brief recording; muscle movement can create artefacts that make the tracing harder to read. The test does not send electricity into your body. If symptoms come and go, note when they happen and what you were doing, because a resting ECG may not capture an episode.

Call emergency services for chest pressure or tightness that is severe, new, persistent, or accompanied by sweating, nausea, fainting, marked breathlessness, or pain spreading to the arm, jaw, or back. Do not wait for a routine ECG appointment if these symptoms are happening now. Sudden weakness, trouble speaking, or collapse also needs emergency help. Symptoms may have different causes, so an ECG is one part of assessment rather than a home test for deciding whether care is needed.

Ask why the ECG is being requested, whether it is a resting or extended recording, and when the result will be reviewed. Ask what the tracing suggests alongside your symptoms, whether another test is needed, and which warning signs should prompt immediate care.