CCI CRAT Exam Practice Test 2 questions with correct answers

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 electrodes. 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 waveST 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 conducting 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 also be caused by chest wall during respiration.