Importance and use of Ecg electrodes
Ecg-electrodes are changing the pace of hospital care through enduring innovation. With cost and performance in mind, ECG electrodes are rapidly becoming a vital component in every hospital department.
Electrodes record the electrical activity generated by heart muscle depolarizations, which propagate in pulsating electrical waves towards the skin. Although the electricity amount is in fact very small, it can be picked up reliably with ECG electrodes attached to the skin (data unit: microvolt, uV). The full ECG setup comprises at least four electrodes which are placed on the chest or at the four extremities according to standard nomenclature (RA = right arm; LA = left arm; RL = right leg; LL = left leg). Of course, variations of this setup exist in order to allow more flexible and less intrusive recordings, for example, by attaching the electrodes to the forearms and legs. ECG electrodes are typically wet sensors, requiring the use of a conductive gel to increase conductivity between skin and electrodes.
Orthodynamic limited offer a comprehensive range of high-quality Ecg electrodes which are suitable for a variety of clinical situations. Our Ecg electrodes are reliable and offer superior adhesion, making them ideal for the busy GP surgery or ECG clinic. Monitoring ECG electrodes include a variety of foam, tape, cloth and radiolucent electrodes to meet every clinical need.
Disposable ECG Electrodes
Disposable electrodes for use with snap-connect lead wires. Can be used for ECG or other biopotential measurements. Disposable ECG electrodes for use with snap-connect lead wires. Can be used for ECG or other biopotential measurements.
The typical EGG signal from stomach activity is recorded with a bipolar lead using a pair of standard Ecg electrode on the skin (e.g., 4 cm apart). The signal is typical of about 100 μV amplitude and periodic with a period of about 20 s (0.05 Hz fundamental). The best position for the EGG electrodes is along the projection of the stomach axis on the abdomen.
Internal electrodes are also used but are in general not considered to provide more information than external EGG recording. Of course, the internal electrodes are nearer to the source, implying higher amplitude signals with more high-frequency content. Because of the very low-frequency spectrum, external noise from, for example, slowly varying skin potentials, tends to be a greater problem than with internal recordings.