Electrical Activity of the Heart
the T wave, which indicates ventricular repolarization.
Vital signs are monitored, an ECG tracing is run, sedation given and local anesthetic. A syrine with a cardiac needle is inserted slowly into the chest wall and into the pericardial sac, withdrawing fluid.
Amplitude: 'loudness'Frequency: 'pitch'
Assuming you are talking about Electrocardiogram readings, the ventricular contraction is represented by the 'R' wave. The R wave is so much higher because the left and right ventricles are made up of the largest and strongest muscles of the heart and show the largest electrical energies on the ECG when they are contracted.
A straight line used to represent a light wave
P wave
the repolarization of the atria is hidden by the QRS wave
P waves represent the atrial depolarization. QRS complex represent the ventricular depolarization. T waves represent the ventricular repolarization.
the T wave, which indicates ventricular repolarization
the T wave, which indicates ventricular repolarization.
ST segment
t wave
t wave just appears before the ventricular relaxation
Causes for poor ECG tracing can be from the patient moving or interferences from electrical appliances in the room: cell phones, a lamp plug in etc
Paperclips
yes
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.