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EKG

Terms in this set (73)

the ability of the heart to initiate an impulse spontaneously and continuously is known as ______________
automaticity
the ability of the heart to respond mechanically to an impulse is known as _______________
contractility
the ability of the heart to transmit an impulse along a membrane in an orderly manner is known as ____________
conductivity
the ability of the heart to be electrically stimulated is known as _____________
exitability
True or False
any cardiac cell has the ability to initiate rhythm
True
"sinus rhythm" means the beat was initiated by the ____________ node
SA node
which part of the EKG represents atrial depolarization (atrial contraction)
P wave
which part of the EKG represents atrial repolarization (atrial relaxation) and ventricular depolarization (ventricular contraction)
QRS segment
which part of the EKG represents ventricular repolarization (ventricular relaxation)
T wave
on an EKG strip one small square = _________ seconds
0.04 seconds
on an EKG strip on large box = ___________ seconds
0.2 seconds
a typical EKG strip is a ______ second strip
6 second
a normal PR interval is _________ to _________
0.12 - 0.20
a normal QRS segment is __________ to _________
0.06 - 0.10
Name the steps of determining an EKG rhythm
1. __________ second strip
2. Is the strip ___________?
3. Does every P wave have a ___________?
4. Count the QRS and multiply by ___________
5. measure the __________ interval
6. measure the __________ segment
1. 6 second strip
2. Is the strip regular?
3. Does every P wave have a QRS?
4. Count the QRS and multiply by 10
5. measure the PR interval
6. measure the QRS segment
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