CRAT Exam 1 | Questions with Complete Solutions (Graded A+)

CRAT Exam 1 | Questions with Complete Solutions (Graded A+)1. When the technician is performing a 12 lead EKG, how many electrodes are used to record the 12 views of the heart? A. 8 B. 10 C. 12 D. 24 - ANSWER- B.10 2. Segments and waveforms on an ECG would include all but which of the following? A. PR interval B. QRS complex C. TB wave D. QT interval - ANSWER- C. TB wave 3. In measuring ventricular regularity if there is no R wave what could be measured instead? A. P wave B. Q wave C. The Q and S wave junction D. S wave - ANSWER- Q and S wave junction 4. The parasympathetic nervous system would do which of the following? A. Slows is the patient's heart rate B. enhanced digestion C. Decreases the patient's blood pressure D. All of the above - ANSWER- D. All of the above 5. Which of the following protects the ventricles from the 400 through 600 erratic atrial impulses that occur during the atrial fibrillation? A. SA node B. Muscle tissue around the AV node C. AV node D. Muscle tissue on the SA node - ANSWER- C. AV node 6. Generally, there is no treatment necessary for bradycardia unless the patient shows symptoms of which of the following? A. Decreased cardiac output B. Excessive output C. Non-existing cardiac output D. All of the above - ANSWER- A. Decreasing cardiac output