What are ECG Cables and Lead Wires?
ECG or electrocardiogram is a test that records the electrical activity of the heart. It shows the heart rhythms and detects any abnormalities. ECG cables and lead wires are essential components used to attach electrodes to the patient's body and transmit recorded electrical signals from the heart to the ECG machine for analysis and printing.
ECG Cable
The ECG Cables and ECG Lead Wires connects the electrodes attached to the patient's body to the ECG machine. It is a multistrand cable usually available in 3, 5 or 10 lead configurations depending on the number of electrodes used. Some key aspects of the ECG cable include:
- Construction: It consists of thin insulated copper or silver coated wires arranged inside a flexible plastic casing for durability. Wires are colour coded for easy electrode identification.
- Length: Standard ECG cables are around 6-8 feet long to allow comfortable patient monitoring. Longer cables up to 15 feet are also available.
- Connectors: One end connects to multipin plug that fits into the ECG machine. Other end splits into separate lead wires with clip connectors to attach to electrodes.
- Shielding: Cable features metallic braiding or foil wrapping to prevent electrical interference from other equipment. This ensures optimal signal quality.
- Durability: Reinforced casing protects wires from breakage due to frequent flexing. Cables can withstand over 500,000 flexes without damage.
So in summary, the ECG cable acts as the lifeline to transmit recorded heart rhythm information intact from the patient's body to the diagnostic machine for evaluation.
Ecg Cables And Ecg Lead Wires
Lead wires are individual insulating strands within the overall ECG cable. Each lead wire connects to a specific electrode placed on the patient's limbs and chest to capture electrical activity from a particular heart viewpoint. Following are the main lead wire types:
- RA (right arm): Connects to electrode on right arm. Serves as reference point.
- LA (left arm): Connects to electrode on left arm.
- RL (right leg): Connects to electrode on right leg.
- LL (left leg): Connects to electrode on left leg.
- V1-V6 chest leads: Connect to a pre-placed row of 6 chest electrodes to detect electrical signals from different regions of the heart.
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