CCI CRAT Exam Practice Test 2
1.When the technician is performing a 12 lead EKG, how many electrodes are used to record the 12 views of the heart?
ANS 10
When the technician is performing a 12 lead EKG, there would be 10 electrodes used to record the 12 leads or views of the heart. Twelve leads doesn't necessarily mean 12 electrodes.
2.Segments and waveforms on an ECG would include all but which of the following?
ANS TB wave
Segments and waveforms on an ECG would include
PR interval QRS complexQT intervalP waveST segmentU waveT wave
3.The parasympathetic nervous system would do which of the following?
ANS All of the above
The parasympathetic nervous system would Slow the patient's heart rateEnhance digestionDecrease the patient's blood pressureIs mediated by acetylcholine
4.If the contact on a electrode is not conducting well or the placement is wrong, which of the following could occur?
ANS Wandering baseline
If the contact on a electrode is not conducting well or the placement is
wrong, it could cause a wandering baseline. The wandering baseline can
also be caused by chest wall during respiration.
5.When interpreting a cardiac rhythm strip, all of the following would be considered steps except?
ANS Determining the age of the patient
When interpreting a cardiac rhythm strip, there are 5 steps
Examine all of the components and the shape of the waveforms. Check the position of the P wave.
Determine if all the complexes are alike.
Determine the rate of the rhythm and if it is normal or abnormal. Evaluate if the rhythm is regular or irregular.
6.Which of the following is the typical maximum length for a PR interval?
ANS 0.20 seconds is the typical maximum length for PR interval. This of
course can vary with heart rate from 0.12 to 0.20 seconds.
7.Which of the following artifact results from electrical equipment, mobile
tele- phones, and electrical power lines?
ANS Electromagnetic interference, also known as 60 cycle interference, is artifact caused by electrical equipment, mobile telephones, and electrical power lines. To minimize 60 cycle interference (or 60 Hz pickup), the technician should set the diagnostic mode of the 12-lead electrocardiogram monitor to 0.05-40 Hz. With the low frequency/high pass filter set to 0.05 the monitor should produce accurate ST-segments.
8.In the 1,500 method for calculating atrial rate, the technician should count which of the following?
ANS Squares between two consecutive P waves
To calculate atrial rate with the 1,500 method, the technician would tally the little squares between two consecutive P waves and then divide 1,500 by that amount. There are 1,500 small squares in a one minute rhythm strip.
9.Which of the following would not be considered a patient area of educa- tion?
ANS Providing financial counseling
There are 4 areas of patient education
1.Restoration of health 2.Maintenance and promotion
3.Coping with new illness or
1.When the technician is performing a 12 lead EKG, how many electrodes are used to record the 12 views of the heart?
ANS 10
When the technician is performing a 12 lead EKG, there would be 10 electrodes used to record the 12 leads or views of the heart. Twelve leads doesn't necessarily mean 12 electrodes.
2.Segments and waveforms on an ECG would include all but which of the following?
ANS TB wave
Segments and waveforms on an ECG would include
PR interval QRS complexQT intervalP waveST segmentU waveT wave
3.The parasympathetic nervous system would do which of the following?
ANS All of the above
The parasympathetic nervous system would Slow the patient's heart rateEnhance digestionDecrease the patient's blood pressureIs mediated by acetylcholine
4.If the contact on a electrode is not conducting well or the placement is wrong, which of the following could occur?
ANS Wandering baseline
If the contact on a electrode is not conducting well or the placement is
wrong, it could cause a wandering baseline. The wandering baseline can
also be caused by chest wall during respiration.
5.When interpreting a cardiac rhythm strip, all of the following would be considered steps except?
ANS Determining the age of the patient
When interpreting a cardiac rhythm strip, there are 5 steps
Examine all of the components and the shape of the waveforms. Check the position of the P wave.
Determine if all the complexes are alike.
Determine the rate of the rhythm and if it is normal or abnormal. Evaluate if the rhythm is regular or irregular.
6.Which of the following is the typical maximum length for a PR interval?
ANS 0.20 seconds is the typical maximum length for PR interval. This of
course can vary with heart rate from 0.12 to 0.20 seconds.
7.Which of the following artifact results from electrical equipment, mobile
tele- phones, and electrical power lines?
ANS Electromagnetic interference, also known as 60 cycle interference, is artifact caused by electrical equipment, mobile telephones, and electrical power lines. To minimize 60 cycle interference (or 60 Hz pickup), the technician should set the diagnostic mode of the 12-lead electrocardiogram monitor to 0.05-40 Hz. With the low frequency/high pass filter set to 0.05 the monitor should produce accurate ST-segments.
8.In the 1,500 method for calculating atrial rate, the technician should count which of the following?
ANS Squares between two consecutive P waves
To calculate atrial rate with the 1,500 method, the technician would tally the little squares between two consecutive P waves and then divide 1,500 by that amount. There are 1,500 small squares in a one minute rhythm strip.
9.Which of the following would not be considered a patient area of educa- tion?
ANS Providing financial counseling
There are 4 areas of patient education
1.Restoration of health 2.Maintenance and promotion
3.Coping with new illness or
