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Doctor insights on: Placement Of 3 Lead Ecg Electrodes

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Will 1 loose electrode on an ECG cause the results to be all over the place?

Will 1 loose electrode on an ECG cause the results to be all over the place?

Some leads: Only the ECG waves generated by information from the loose lead will be affected. ...Read more

Dr. Patricia Foster
3 Doctors shared insights

Electrocardiogram (Definition)

Electrocardiogram (ecg, ekg) is a print-out of the electrical forces detected by electrodes on the chest wall, as electricity travels through the heart with each heart beat. The electrodes are placed in different positions, and each position "sees" the electrical activity of the heart from its own vantage point. Abnormalities in signal detected at chest surface ...Read more


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What arrhythmias can be identified with a ECG signal taken using la, RA and ll electrodes?

What arrhythmias can be identified with a ECG signal taken using la, RA and ll electrodes?

All of them: There are no la and RA "leads" on a standard ekg, so I'm interpreting your question as "what can you find with just 4 wires? " the answer is "just about anything." with those 4 leads, i'll have 6 printouts of your heart, good enough to diagnose all types of rhythm problems. I may need the other 6 wires to better classify them, and determine where the rhythm problem is specifically though. ...Read more

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Which electrode works better potassium chloride or silver chloride for ecg?

Which electrode works better potassium chloride or silver chloride for ecg?

Sodium chloride: Nacl sodium chloride commonly known as table salt is an electrical conductor that I have used to assess impulses for an ecg. ...Read more

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Does electrode placement on EKG affect outcome results, ?

Does electrode placement on EKG affect outcome results, ?

Ecg: The ECG records the vector direction of the signals in the heart. As such the placement of the leads is crucial to the interpretation of the ECG patterns recorded. ...Read more

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Lead placement for a five-lead ECG system?

Usual: White to the right arm, black to the left arm, red to the left leg, green to the right leg, usually the v lead is brown which goes to the precordial placements. ...Read more

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Where are the electrodes placed during EKG on a baby?

Where are the electrodes placed during EKG on a baby?

Same as adults: The leads are smaller but in the same locations. ...Read more

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Terrible skin reaction to event Moniter EKG electrodes. What could be in the electrode I'm allergic too?

Terrible skin reaction to event Moniter EKG electrodes. What could be in the electrode I'm allergic too?

Adhesive: It is very common that the adhesive on the electrodes cause a localized irritation/skin reaction. ...Read more

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Where do I place an EKG electrode on a woman with no breasts or a bilateral implant?

Not a problem: The electrodes are not placed on the breast in anyone so it's not an issue. V1 goes to the right of the sternum; v2 (left 2nd ics) v4 in the mid-clavicular line 5th ics; v3 between v2 and v4. V5 in the anterior axiallary line 5th ICS and v6 in the mid-axillary line 5th ICS - none go on the breast which would act as an insulator and interfere with the tracing.
Ics=intercostal space. ...Read more

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Can I be allergic to EKG electrode patches? I had an EKG yesterday, and this morning I have an itchy red rash in all the spots where the patches were. Could it be an allergic reaction? It itches a lot. Could it be serious?

Can I be allergic to EKG electrode patches? I had an EKG yesterday, and this morning I have an itchy red rash in all the spots where the patches were. Could it be an allergic reaction? It itches a lot. Could it be serious?

Yes.: Yes. This sounds like an allergic reaction to the adhesive or latex in the ekg electrode patch. Many people are sensitive to adhesives. Be sure to tell your health care provider to add this to your list of allergies. Also, let your health care provider know about your rash/itchy reaction so he/she can recommend treatment. (usually an over the counter cream). ...Read more

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Had an EKG done my doc's office. The medical assistant pressed very hard on my chest (on the sternum&around it)to find the right locations for the electrodes. This hurt my chest a lot/caused bruises/pain/shortness of breath. Can this harm my heart/aorta?

Had an EKG done my doc's office. The medical assistant pressed very hard on my chest (on the sternum&around it)to find the right locations for the electrodes. This hurt my chest a lot/caused bruises/pain/shortness of breath. Can this harm my heart/aorta?

Musculoskeletal.: Your discomfort and shortness of breath are likely musculoskeletal due to the excessive pressure upon the muscles and bones of the chest wall. The MA would not have been able to press deep enough through the chest wall to affect the heart, lungs or aorta directly. But if your symptoms persist more than a few days then you should see the doctor. ...Read more

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Ecg: flat t wave. Echo: ef 60%. Basis on this diagnosis is ischemia. Being asked to undergo stent placement? Should go for it or not?

Ecg: flat t wave. Echo: ef 60%. Basis on this diagnosis is ischemia. Being asked to undergo stent placement? Should go for it or not?

Need more info...: Would need to know your symptoms and the results of a stress test to clarify better.

You are right to ask questions. Except in extreme emergencies, one can always ask for a second opinion ...Read more

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On a 3 lead 24h ecg, would it pick up changes from angina like a 12lead?

On a 3 lead 24h ecg, would it pick up changes from angina like a 12lead?

A 12 lead is better: Depending on the leads and the area affected. It is possible albeit a 12 lead is more definitive. Further testing would rule out ant coronary occlusive disease. ...Read more

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My ecg showed a Negative T wave in lead 3 what does this mean? And what could cause this?

My ecg showed a Negative T wave in lead 3 what does this mean? And what could cause this?

ECG: T waves inverted in lead 3 are a nonspecific finding and in and of themselves not a big deal. They must be judged in the context of the whole 12 lead study and clinical information. Ask your Doc about your study and meanwhile don't worry about the test result. ...Read more

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Male 22. Got a portable 3 lead ECG at home. My P wave can't really be seen but my mums can? How come?

Ectopic atrial rhyth: You might have a ectopic atrial rhythm - which means your arial beats instead of originating in the sa node - originates else where. It is benign and nothing to worry about. Get a standard 12 lead ekg to check. ...Read more

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Can 3 lead ECG show much?

Yes: While "much" is a relative statement, a 3 lead ECG should be able to help the physician determine your heart rhythm. ...Read more

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I sometimes have a negative -t in lead 3 on ecg but other times it is positive, it changes every time what can cause this?

ECG: T wave changes as you describe are usually due to changes in vector forces from lead placement and respiration. Other variables also can come into play. In general we don't get excited by them. ...Read more

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Why is it called 12 lead ecg if it only uses 10? Pls explain

The EKG is routinely: Performed with 6 chest wires (V1-V6) (six signals or leads) and the four arm wires. 10 wires. The signals from the arm and leg wires are electronically combined to provide a triangular pattern of three leads (signals) I, II, III. And then also electronically combined to produce what is called augmented leads (signals). aVR, aVL, and aVF. 6 more signals (leads). Thus 10 wires and twelve leads. ...Read more

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What is the indication for having a flat t wave in 12 lead ecg?

T Wave flattening: In the absence of clinical history or symptoms, t wave abnormalities such as flattened t waves are nonspecific. They may be seen in healthy individuals, leading to mistaken diagnosis of heart disease. Pathological causes are many & include myocardial ischemia, electrolyte abnormality, stroke, anticancer medications, and even with fever and after eating. Your dr, will tell you more. ...Read more

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Got Brugadh sign in V1 lead on routine ECG. Echo showed Mild MR. Diagnosis?

Got Brugadh sign in V1 lead on routine ECG. Echo showed Mild MR. Diagnosis?

Brugadh sign: You have a Brugadh sign. This does not mean you have the disease. Only your Dr. Can tell you. ...Read more

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I had a Notched S wave in lead V2 on my ECG is this something serious? It wasn't there 2 years ago.

Possibly: Need to interpret the ECG in its entirety. May indicate a delay in the electrical conduction in the lower chambers of the heart.

Sometimes stress testing is done to evaluate for coronary artery blockage as an origin for ecg abnormalities. ...Read more

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Hi. I'm a Paramedic and did a 12-lead ECG on myself at work and found an rsr' in V1which I didn't find in an ECG I did a few years ago. Any comments?

ECG: New onset rsr' in the absence of clinical symptoms doesn't carry a lot of meaning. There are a multitude of possibilities. If you are nervous see your doc and discuss to see if evaluation is indicated. ...Read more

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Hi. I'm a Paramedic and when I did a 12-lead ECG on myself at work I found an rsr' complex in V1 (rsr' is 0.08s wide). It wasn't there when I did an ECG a couple of years ago. What should I do?

Hi. I'm a Paramedic and when I did a 12-lead ECG on myself at work I found an rsr' complex in V1 (rsr' is 0.08s wide). It wasn't there when I did an ECG a couple of years ago. What should I do?

If you have no: Cardiac symtoms (dyspnea, chest pain, palpitations, exertional limitation) then do nothing. Perhaps another EKG in a few years for interest. I suspect your conduction system is aging or more likely your lead position or body position was different now than the last time. This could be an early sign of right heart disease so an echo could be useful, nothing would be done until you have symptoms. ...Read more

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What is the 12. Lead ecg?

ECG: It stands for electrocardiogram. It is used to measure the movement of electrical signals in the heart. When working appropriately, this enables your heart to beat and pump blood to the rest of the body. When the heart is damaged or the electrical system is malfunctioning, ECG can pick up changes. ...Read more

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What is a lateral lead mean on an ecg?

See answer: An ekg will have 6 leads on your chest area (called v1 through v6) as well as 1 for each arm and leg. The last 2 leads on the chest (v5-v-6) are called the lateral leads, as well as lead I on the 12 lead ekg sheet. ...Read more

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What can cause the p-waves to be missing on a 4 lead ecg?

P waves: If p waves are not seen on the surface ecg, either they are not present or the vector direction of the forces doesn't produce an adequate size p wave to see in the leads available. ...Read more

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My ECG showed repolirisation abnormalities in lead v5 and v6 the t wave was more flat or something is this bad? I'm 23.

Non-specific: What you're describing is rather non-specific, that is, you'd have to combine the EKG findings with a thorough history and physical examination by your primary physician. They may want to, then, refer you to a cardiologist or cardiac electrophysiologist to see if the findings are significant. Call 911 if you pass out, have chest pain, severe dizziness, or sudden onset shortness of breath. ...Read more

Electrode (Definition)

A conductor or medium by which an electric current is conducted to or from any medium, such as a cell, ...Read more