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GRID AND WAVES
Terms in this set (23)
The horizontal axis represents
1 mm = one small box (0.04 SEC) . Five small boxes = 5 mm (0.2 seconds) Five large boxes = 1 sec.
Vertical axis represents
Amplitud (voltage) 1 mm = 0.1 mv
1 mv what deflection produces?
A deflection of 10 mm. (standarization)
Vertical axis (two large squares=
Vertical axis (one large square =
Vertical axis(one small square=
Are movement away from the isolectric line (either upward of downward)
Line between two waveforms
Wave plus a segment
Is the first deflection after diastole (is a smooth round no more than 2.5 mm high and no more than 0.11 sec.
Is no longer than .12 seconds., three small boxes.
Slightly asymmetric, no more than 5 mm in height
U wave (rep. of Purkinje fibers)
Round and symmetric, no more less than 1.5 mm in height
Is the first negative deflection produced by ventricular depolarization
First positive deflection produce by ventricular depolarization
negative deflection of ventricular depolarization
T wave is
ventricular repolarization (no more than 5 mm in height)
QRS complex duration
no more than .12 sec (less than 3 small boxes) or 0.1 sec
Prominent U wave is due to:
A complex is form by
represent the time of ventricular contraction and the beginning of repolarization
Is where the QRS complex ends and the ST segment begins