An Electrocardiogram of a single heart beat shows three distinct waves. These are the P, QRS and T Waves.
The QRS wave (normally the largest spike) in the electrocardiogram, is that of the ventricles depolarizing and contracting.
Ventricular depolarization
It is also the atrial repolarization
The ventricular depolarization is so strong that it hides the atrial repolarization
ventricular depolarization
ventricular depolarization
depolarization of the ventricles
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QRS-- A pattern seen in an electrocardiogram that indicates the pulses in a heart beat and their duration. Variations from a normal QRS pattern indicate heart disease.
The QRS complex and the P wave are features of the electrocardiogram, which graphically displays the electrical activity of the heart. The P wave is generated when the atria, or upper chambers of the heart contract. The QRS complex is generated when the ventricles or lower chambers of the heart contract. If there is a P wave but no QRS, the the heart's main pump is not functioning. This would cause death quickly.
does a normal qrs complex measures <.12
The ventricles contracting.
When ventricles depolarize
The QRS complex on an ECG represents ventricular depolarisation. This wave should have the greatest amplitude.
An abnormal ECG is when the electrocardiogram shows results outside the norm. These results are usually indicative of problems in the heart, such as enlargement, higher potassium or sodium levels, damage, and inflammation.
QRS
QRS complex
Okay so an EKG show the electrical impulse that travels through the heart. What I mean is EKG don't show contraction. However the QRS complex represent ventricular depolarization, which signals ventricular contraction
The QRS complex corresponds to the depolarization of the ventricles in the heart. It represents the spread of the electrical signal that initiates the contraction of the ventricles. This is a critical step in the cardiac cycle that leads to the pumping of blood out of the heart.
Atrial paced