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Doctor insights on: Q Waves Presence On An Ecg

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What could 'small q waves' on a resting ECG represent?

What could 'small q waves' on a resting ECG represent?

Q waves: Q waves can be abnormal if more than 1/4 the total electrical deflection and at least .04sec. In duration. Smaller q waves than this are within normal parameters. ...Read more

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Dr. Melissa Gowans
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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Is a small Q wave on an ECG significant?

Is a small Q wave on an ECG significant?

Probably not: By definition, a "significant" q wave must be > than 40 msec in duration or > than 25-33% (depends on the reference) of the r wave height. Even by that criteria, many electrocardigraphically significant q waves are seen in people with normal cardiac echo's and mri's. ...Read more

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What is a t-wave on an ECG?

What is a t-wave on an ECG?

ECG: the T wave follows the QRS and represents repolarization of the ventricles j ...Read more

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What is a delta wave on an ecg?

Delta wave: Reflects abnormal conduction potentially risking rhythm disturbances;needs formal evaluation by cardiology electrophysiology ...Read more

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What do flat t waves on ECG mean?

Ecg: Flattened t waves are what we call nonspecific findings. Lots of things can cause them. If the patient is doing fine, we don't place much weight on the finding, if the patient is having symptoms, we pay lots more attention to it. ...Read more

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Is a delta wave in my ECG harmful?

Is a delta wave in my ECG harmful?

It depends.: Delta waves are present in patients with wolf-parkinson-white syndrome (wpw). This condition can be associated with rapid arrhytmias. In some patients it may be asymptomatic. Patients with serious rhythm disorders can be treated with ablation of the accessory electrical pathway which results in abolition of the arrhythmias. At experienced centers the success rate is very good. ...Read more

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What does elevated t waves on ECG mean?

What does elevated t waves on ECG mean?

Please clarify quest: The ECG may show either "tall" or "peaked" t waves, or may show "elevated" st segments. The description of "elevated t waves" is incorrect. Elevated st segments can mean many things, but at age 37 without any symptoms, are probably benign. Peaked t waves can also reflect a variety of issues, or may be benign. Would need to see the patient and the ECG to know for sure. ...Read more

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What is a t wave abnormality on an ecg?

What is a t wave abnormality on an ecg?

Ecg: T waves represent the repolarization of the ventricles. The morphology of the wave is fairly uniform so when its vector is in the wrong direction we consider the t wave abnormal. ...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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On an ecg, what does a "persistent s-wave ( v5-v6 )" mean?

On an ecg, what does a "persistent s-wave ( v5-v6 )" mean?

Not much: on the ECG, the first downward deflection that follows the dominant upward deflection is called an "S" wave and is part of the depolarization complex (called a "QRS complex"). Classically, the S wave is tiny or absent in V5-6. When the S wave is deep, the term "clockwise rotation" is used. (your heart is rotated in your chest) It doesn't connote any pathology. Not to worry. ...Read more