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ECG records electrical activity and not mechanical, hence it has nothing to do with contraction. But P wave represents atrial depolarization.
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The portion of the ECG that corresponds to atrial depolarization is the?
The portion of the ECG that corresponds to atrial depolarization is called the P wave. The P wave is the first wave on the ECG.
The R wave of the ECG is most closely associated with which phase of the cardiac contraction cycle?
Ventricular contraction.
What is polarization in the electrocardiogram?
The contraction of any peart of heart in ecg is known as polarization. Eg contraction of atria is known as polarization of atria
How an ECG is obtained from a patient?
An ECG is obtained from a patient with a few (Possibly 6 or 8) Sticky pads, that are connected to the wires, connected to the ECG itsself, that are stuck onto the body in different places. These can read the heartrate and record it onto the ECG monitor and they will be printed off by a special printer.
What is the ECG of a normal human?
the electrocardiograph
Which part is atrial systole in ECG?
identify the portion of the ECG that represents the electrcal activity associated with atrial systole.
What part of an ecg do atria contract?
Atrial depolarization occurs at the P wave. The atrial contraction occurs at the peak of the wave at the influx of calcium ions to prolong depolarization.
What part of the ECG complex represents the atrial depolarization?
The P wave.
The portion of the ECG that corresponds to atrial depolarization is the?
The portion of the ECG that corresponds to atrial depolarization is called the P wave. The P wave is the first wave on the ECG.
What part of the ECG tracing represents the time from the start of the atrial activity to the start of ventricular activity?
QT interval
What is atrial repolarization indicated by?
The atrial repolarization occurs during the QRS complex of the ECG but is obscured by the ventricle depolarization.
What is the correct order of ECG waves?
P wave - represents atrial depolarization (contraction) QRS complex - ventricular depolarization T wave - ventricular repolarization (relaxation) atrial repolarization is "buried" within the QRS Complex
Does the atrial rate equal the ventricular rate in the ECG tracing?
yes
In an ecg pattern the p wave is caused by what?
depolarization of atrial muscle fibers
What are the 3 components of the ECG trace?
The EKG or ECG components are the P wave (contraction of the atria), the QRS complex (the contraction of the ventricles) and the T wave (repolarization of the ventricles).
Why is the P wave sometimes notched in an ECG due to atrial hypertrophy?
Check into left atrial enlargement. usually a sign of notched P waves
What is the difference between heart rate and ventricular rate?
On an ECG the heart rate will match both ventricular rate and atrial rate if the heart is normal. If people have atrial fibrilation then the ventricular rate will be used on the ECG to work out the rate of the ventricular contraction and vice-versa with ventricular fibrilation. Usually both atrial and ventricular rates match so if the atria contracts at 70 BPM the ventricles will beat at 70 BPM. It is possible for the ECG machine to work out atrial or ventricular rate if needs be. Usually, however, if the ECG machine just displays heart rate then both ventricular and atrial rates match.
