ECG EXAM REVIEW QUESTIONS AND ANSWERS, 100% ACCURATE/| latest update 2024/25|

ECG EXAM REVIEW QUESTIONS AND ANSWERS, 100% ACCURATE/ An ECG is a recording of - -Voltage in respect to time (B) The PR interval is the time required for the impulse to travel from the - -SA node to the AV node (B) Depolarization - -Is the discharge of electrical energy (A) The ECG is a - -Sensor, amplifier, and recorder (D) To make an extremely small ECG larger, you would set the sensitivity switch to - -2 (C) Leads 1, 2, and 3 are the - -Standard leads (C) Muscle artifact voltages have an - -Erratic amplitude and frequency (B) The devices that sense the skin voltages are - -Sensors (C) The sensitivity key - -Controls how much gain or amplification the ECG will have (B) An extension cord running under the patient table is likely to result in - -Alternating current (AC) interference (B) Leads AVR, AVL, and AVF are the - -Augmented leads (B) For a quality ECG the patient should - -Be comfortable and relaxed, have a pillow under their head, and have adequate support for their arms and legs (D) The diagnostic value of an ECG is determined by - -a single tracing and a comparison between tracings (E) The ground reference sensor is applied to the patients - -Right leg (B) The greatest disadvantage of using electrolyte paste is - -sensors must be cleansed thoroughly after each use (C) The relatively straight line that is recorded when there is no electrical activity is the - -baseline, isoelectric line, and zero voltage line (D) You have a large amount of AC interference on leads 1 and 3; the source of interference is in the direction of the - -Left arm (B) Repolarization is - -the electrical recovery p