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88 Cards in this Set

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Area (in millimeters) of small squares on EKG paper
1 x 1 mm
Area (in millimeters) of the large squares on EKG paper
5 x 5 mm
Time distance across one small square on EKG paper (duration)
0.04 seconds
Time distance across two small squares on EKG paper (duration)
0.08 seconds
Time distance across three small squares on EKG paper (duration)
0.12 seconds
Time distance across four small squares on EKG paper (duration)
0.16 seconds
Time distance across five small squares on EKG paper (duration)
0.2 seconds
Time distance across one large square on EKG paper (duration)
0.2 seconds
Time distance across two large squares on EKG paper (duration)
0.4 seconds
Time distance across three large squares on EKG paper (duration)
0.6 seconds
Time distance across four large squares on EKG paper (duration)
0.8 seconds
Time distance across five large squares on EKG paper (duration)
1 second
Vertical distance along one small square on EKG paper (amplitude)
0.1 mV
Vertical distance along two small squares on EKG paper (amplitude)
0.2 mV
Vertical distance along three small squares on EKG paper (amplitude)
0.3 mV
Vertical distance along four small squares on EKG paper (amplitude)
0.4 mV
Vertical distance along five small squares on EKG paper (amplitude)
0.5 mV
Vertical distance along one large square on EKG paper (amplitude)
0.5 mV
Vertical distance along two large squares on EKG paper (amplitude)
1 mV
Vertical distance along three large squares on EKG paper (amplitude)
1.5 mV
Vertical distance along four large squares on EKG paper (amplitude)
2 mV
Vertical distance along five large squares on EKG paper (amplitude)
2.5 mV
Amplitude of normal P wave does not exceed this amount in any lead.
0.25 mV
(2.5 mm or 2 1/2 small squares high)
Duration of normal PR interval.
0.12 to 0.2 seconds
(3 to 5 mm)
The amplitude of a normal Q wave does not exceed this amount.
0.1 mV
Duration of a normal QRS interval in seconds.
0.06 to 0.1 seconds
Time distance across 1 1/2 small squares on EKG paper (duration)
0.06 seconds
Time distance across 2 1/2 small squares on EKG paper (duration)
0.1 seconds
Time distance across 1/2 of a large square on EKG paper (duration)
0.1 seconds
The amplitude, or height, of a normal T wave.
one third to two thirds of the corresponding R wave
In general, the QT interval composes what percentage of the cardiac cycle, as measured from one R wave to the next?
40%
Time distance across one half of a small square on EKG paper (duration)
0.02 seconds
Time distance across 3 1/2 small squares on EKG paper (duration)
0.14 seconds
Time distance across 4 1/2 small squares on EKG paper (duration)
0.18 seconds
Time distance across six large squares on EKG paper (duration)
1.2 seconds
Time distance across seven large squares on EKG paper (duration)
1.4 seconds
Time distance across eight large squares on EKG paper (duration)
1.6 seconds
Time distance across nine large squares on EKG paper (duration)
1.8 seconds
Time distance across ten large squares on EKG paper (duration)
2 seconds
Duration of a normal QRS interval as measured in small squares.
1.5 to 2.5 small squares
At a glance, the width of a normal QRS interval in relation to a large square.
approx. 30% to 50%

(no more than 1/2 large square)
The duration of one half of a large square, expressed in time.
0.1 seconds
How many large squares are in half a second?
2.5
How many large squares are in 3 seconds?
15
Three large squares equals how many beats per minute?
100
Four large squares equals how many beats per minute?
75
Five large squares equals how many beats per minute?
60
Six large squares equals how many beats per minute?
50
Two large squares equals how many beats per minute?
150
One large square equals how many beats per minute?
300
Seven large squares equals how many beats per minute?
about 43
Eight large squares equals how many beats per minute?
about 38
Nine large squares equals how many beats per minute?
about 33
Ten large squares equals how many beats per minute?
30
Fifteen large squares equals how many beats per minute?
20
Twenty large squares equals how many beats per minute?
15
Twenty-five large squares equals how many beats per minute?
12
Thirty large squares equals how many beats per minute?
10
One and a half large squares equals how many beats per minute?
200
One and a quarter large squares equals how many beats per minute?
about 240
One and three quarters large squares equals how many beats per minute?
about 170
It is possible to calculate beats per minute by dividing the number of large squares between R waves by what number?
300
It is possible to calculate beats per minute by dividing the number of small squares between R waves by what number?
1500
Describe the six-second method for calculating heart rate.
Simply count the number of beats on a six second strip and multiply by ten.
What is an appropriate method for estimating heart rate in an irregular rhythm?
six-second strip method,
multiply beats by ten
If there are five and a half beats in a six second EKG strip, what is the heart rate.
about 55
If there are six full beats in a six second EKG strip, what is the heart rate.
about 60
If there are seven and a quarter beats in a six second EKG strip, what is the heart rate?
about 72
If there are eight and three quarter beats in a six second EKG strip, what is the heart rate?
about 88
If there are nine and a quarter beats in a six second EKG strip, what is the heart rate?
about 92
If there are ten full beats in a six second EKG strip, what is the heart rate?
100
If there are ten and a half beats in a six second EKG strip, what is the heart rate?
about 105
If there are eleven and a quarter beats in a six second EKG strip, what is the heart rate?
about 112
If there are twelve and a half beats in a six second EKG strip, what is the heart rate?
about 125
If there are fifteen and a half beats in a six second EKG strip, what is the heart rate?
about 155
If there are twenty full beats in a six second EKG strip, what is the heart rate?
200
If there are four beats in a six second EKG strip, what is the heart rate?
40
If there are three beats in a six second EKG strip, what is the heart rate?
30
If there are two beats in a six second EKG strip, what is the heart rate?
20
If there is only one beat in a six second EKG strip, what is the heart rate?
10 or less
How many large squares in six seconds?
30
What is the duration of a normal P wave in seconds?
Less than 0.12 seconds
What is the duration of a normal P wave in small boxes?
Less than 3 small boxes
standard speed for ECG paper
25 mm/s
standard gain for ECG paper
10 mm/mv
1 mv rectangular tracing made by ECG to confirm standardized settings is called the ______.
standardization mark
two elements to check when confirming standardization of EKG settings
(1) paper speed
(2) gain
The standardization mark should be ______ mm high.
10