Chapter 13 The Standard 12 ECG System

Chapter 13 The Standard 12 ECG System/ Chapter 13 The Standard 12 ECG System MULTIPLE CHOICE 1. How many electrodes are used in a 12 lead ECG? a. 10 electrodes c. 6 electrodes b. 12 electrodes d. 16 electrodes ANS: A Feedback A B C D A 12 lead ECG uses 4 limb and 6 chest electrodes for a total of 10 electrodes. A 12 lead ECG uses 4 limb and 6 chest electrodes for a total of 10 electrodes. A 12 lead ECG uses 4 limb and 6 chest electrodes for a total of 10 electrodes. A 12 lead ECG uses 4 limb and 6 chest electrodes for a total of 10 electrodes. PTS: 1 DIF: Recall REF: Introduction OBJ: 1 2. Which limb leads are unipolar leads? a. aVR, aVL, and aVF c. IV, V, and VI b. I, II, and III d. I, II, and aVF ANS: A Feedback A B C D The unipolar limb leads include aVR, aVL, and aVF. The unipolar limb leads include aVR, aVL, and aVF. The unipolar limb leads include aVR, aVL, and aVF. The unipolar limb leads include aVR, aVL, and aVF. PTS: 1 DIF: Recall REF: Standard Limb Leads OBJ: 1 3. What is the name of imaginary equilateral triangle formed by the axes of the limb leads? a. Einthoven’s c. Eiserman’s b. Entwhistle’s d. Entemann’s ANS: A Feedback A B C D The imaginary triangle that can be formed by the axes of the limb limbs is called Einthoven’s triangle. The imaginary triangle that can be formed by the axes of the limb limbs is called Einthoven’s triangle. The imaginary triangle that can be formed by the axes of the limb limbs is called Einthoven’s triangle. The imaginary triangle that can be formed by the axes of the limb limbs is called Einthoven’s triangle. PTS: 1 DIF: Recall REF: Standard Limb Leads OBJ: 1