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Doctor insights on: 12 Leads Ecg Interpretation

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I know that standard ecg has 12 leads, but sometimes on some ecg I see additional strip. What is this is there a 13th lead? Could you pls explain

I know that standard ecg has 12 leads, but sometimes on some ecg I see additional strip. What is this is there a 13th lead? Could you pls explain

The usual format for: a 12 lead EKG includes a lead II rhythm strip across the bottom of the tracing. That is the strip you are referring to. It is just a continuous lead II not a "13th" lead. ...Read more

Dr. Cornelius O'Leary Jr
2 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 does nonspecific t abnormalities on lateral leads mean on an ecg?

What does nonspecific t abnormalities on lateral leads mean on an ecg?

Medical Diagnostics: This is simply that the t waves seen on this ECG were not normal but they were also not diagnostic of any condition. Ekgs have specific changes that correlate with specific and commonly seen cardiac damage. This is just a way of saying there is nothing here that explains any disease. It is not to be worried over. ...Read more

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What does baseline wander in leads v3, v4 mean on ecg?

What does baseline wander in leads v3, v4 mean on ecg?

Don't worry: Nothing to worry about. Baseline wander on the ECG means that the straight line in between the spikes and waves is not so straight! it can wiggle up and down due to electrical interference, a problem with the electrical lead or pad, or oil/lotion/hair on the chest which can interfere with the electrical conduction. ...Read more

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Is it bad if the P and the R wave are the same amplitude and shape on all leads from an ECG and what does this mean. Amplitude for both was 3.5 mm.

Is it bad if the P and the R wave are the same amplitude and shape on all leads from an ECG and what does this mean. Amplitude for both was 3.5 mm.

ECG: It would be highly unlikely for what you describe to happen on an properly recorded ecg. There are a few possibilities should it be real but it is very unlikely ...Read more

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Very slight ST elevation in leads V4-V6 on ECG. all else normal... Is this an MI?

Very slight ST elevation in leads V4-V6 on ECG. all else normal... Is this an MI?

Ecg: Very slight ST elevation is likely nothing to be concerned about in and of itself. The waves on an ecg need to be interpreted in light of clinical situations as there are multiple possible reasons for most variations from absolutely normal on these tracings. In a 19y/o minimal ST elevation is highly unlikely to represent an MI unless associated with specific symptoms. ...Read more

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I had an ECG done. Borderline low voltage in frontal leads. Borderline st elevation anterolateral leads means?

EKG: Ekg by itself doesn't mean anything. It has to be matched with the clinical picture. For example hear attack symptoms with st elevation can be active heart attack. Minimal st elevation without any symptoms could be something called j point elevation. Low voltage most of the time are normal but rarely could be seen in fluid around the heart. ...Read more

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Borderline ECG, These Minor Changes are of Equivocal Significance only. Sinus Rhythm T wave changes in anterior leads.

Borderline ECG: I am not certain of the circumstances leading to your having an ECG. T wave changes in anterior leads could be a sign of underlying atherosclerotic heart disease. Risk factors for this include high Blood pressure, high cholesterol, diabetes, smoking and 1st degree female relative with heart attack before 60 or 1st degree male relative with heart attack before 50. You need to see a physician ...Read more

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What do you suggest if my ECG report says 'sinus rhythm r-s transition zone in v leads displaced to the right. what does it mean ?

What do you suggest if my ECG report says 'sinus rhythm r-s transition zone in v leads displaced to the right. what does it mean ?

Clockwise: It means that when you were born, your heart was rotated just a little tiny bit counter-clockwise in your chest. It has NO clinical significance. Doctors report it to prove that they were awake when they were reading EKGs. Forget it! ...Read more