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ECG test

Waveform Measurements

QuestionAnswer
Each small square is equal to ______ when measuring the voltage of a waveform. .1 mv
The T wave signifies _______ on the electrocardiogram. ventricular repolarization
When measuring time each small square is equal to _______ in duration. .04 seconds
The QRS complex normally measures between ____ and _____ seconds long. .06 to .12
The formula for calculating the heart is ________ 1500 / # of boxes
Atrial depolarization is represented by the _______ on the electrocardiogram. P Wave
One large square on the EKG paper represents_____ .20 seconds
The ST segment usually appears_______ flat
Two large squares on the EKG paper represents _____ millimeters or _____ milivolt. 10 or 1.0
QRS Complex ventricular depolarization
The axis of a normal heart is between ____ and ____ degrees. 0 and +90 degrees
Ventricular contraction occurs during the ______ on the EKG ST Segment
Normal duration of the QT interval .32 to .44
PR interval represents depolarization of the atria and the delay of the inpulse at the AV Node.
Duration of the PR Interval .12 to .20 seconds
Normal Sinus Rhythm 60 and 100 bpm
V1 Fourth intercostal space at the right margin of the sternum
V2 Fourth intercostal space at the left margin of the sternum
V3 Midway between V2 and V4
V4 Fifth intercostal space at the left midclavicular line
V5 level of V4 but on left anterior line
V6 level of V4 but on midaxillary line
Created by: bossy777