CCI CRAT Exam Practice Test 2 100% correct When the technician is performing a 12 lead EKG , how many electrodes are used to record the 12 views of the heart? - Answer 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 el ectrodes. Segments and waveforms on an ECG would include all but which of the following? - Answer TB wave Segments and waveforms on an ECG would include: PR interval QRS complexQT intervalP wa veST segmentU waveT wave The parasympathetic nervous system would do which of the following? - Answer All of the above The parasympathetic nervous system would:Slow the patient's heart rateEnhance digestionDecrease the patient's blood pressureIs mediated by acetylcholine If the contact on a electrode is not c onducting well or the placement is wrong, which of the following could occur? - Answer 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 al so be caused by chest wall during respiration. When interpreting a cardiac rhythm strip, all of the following would be considered steps except? - Answer 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 a bnormal. Evaluate if the rhythm is regular or irregular. Which of the following is the typical maximum length for a PR interval? - Answer 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. Which of the following artifact results from electrical equipment, mobile telephones, and electrical power lines? - Answer Electromagnetic interference, also known as 60 cycle interference, is artifact caused by electrical equipment, mobi le 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 mo nitor should produce accurate ST -
segments. In the 1,500 method for calculating atrial rate, the technician should count which of the following? - Answer Squares between two consecutive P waves To calculate atrial rate with the 1,500 method, the techni cian 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. Which of the following would not be considered a patient area of education? - Answer Providing financial counseling There are 4 areas of patient education: 1.Restoration of health 2.Maintenance and promotion 3.Coping with new illness or impairment 4.Prevention of illness and injury All of the following medications could cause bradycardia e xcept? - Answer NSAIDs Bradycardia can be caused by the following medications: Beta -adrenergic blockers Digoxin Calcium channel blockers Lithium
segments. In the 1,500 method for calculating atrial rate, the technician should count which of the following? - Answer Squares between two consecutive P waves To calculate atrial rate with the 1,500 method, the techni cian 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. Which of the following would not be considered a patient area of education? - Answer Providing financial counseling There are 4 areas of patient education: 1.Restoration of health 2.Maintenance and promotion 3.Coping with new illness or impairment 4.Prevention of illness and injury All of the following medications could cause bradycardia e xcept? - Answer NSAIDs Bradycardia can be caused by the following medications: Beta -adrenergic blockers Digoxin Calcium channel blockers Lithium
