why t wave is positive?

why t wave is positive?
The T wave can be described by its symmetry, skewness, slope of ascending and descending limbs, amplitude and subintervals like the Tpeak–Tend interval. In most leads, the T wave is positive. This is due to the repolarization of the membrane. During ventricle contraction (QRS complex), the heart depolarizes.
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More questions like: why t wave is positive?
What does it mean when the T wave is elevated?
For example, tall, peaked T waves in a patient who missed three runs of dialysis are likely to represent hyperkalemia, while tall “hyperacute” T waves in a patient complaining of the acute onset of crushing, sub-sternal chest pain could represent the acute onset of transmural myocardial ischemia.
What does negative precordial T waves mean?
A flat/ negative T wave may be seen for years as a residual pattern in chronic ischemic heart disease with or without Q- wave myocardial infarction.
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What does the T wave on an ECG represent?
Introduction. The T wave on the ECG ( T - ECG ) represents repolarization of the ventricular myocardium. Its morphology and duration are commonly used to diagnose pathology and assess risk of life-threatening ventricular arrhythmias. May 16, 2014
Full answer in: www.ahajournals.org
Why is the T wave in an ECG positive?
The T wave represents ventricular repolarization. Generally, the T wave exhibits a positive deflection. The reason for this is that the last cells to depolarize in the ventricles are the first to repolarize.
Full answer in: www.cvphysiology.com