An electrocardiogram is a recording of the: - Answers electrical activity of the heart
Electrocardiography is used to - Answers detect the presence of cardiac ischemia
determine the presence of hypertrophy of the heart
evaluate chest pain or shortness of breath
What. is a cardiac cycle - Answers One complete heart beat
What is thr name given to the portion of the ECG between two waves - Answers Segment
Which of the following conditions can cause the ECG tracing to exhibit a larger than normal Q
wave and an elevated S-T segment? - Answers Myocardial infarction
(Another term for heart attack)
How high is the standardization mark when the electrocardiograph is properly - Answers 10mm
how many leads are there on a standard electrocardiogram? - Answers 12
A device placed on the skin that picks up electrical impulses released by the heart is known as -
Answers An electrode
Electrical voltage received by the electrocardiograph is changed to mechanical motion in the -
Answers galvanometer
Which electrode is used as a ground reference - Answers right leg
An electrolyte must be used when running an ECG to - Answers Facilitate the transmission of
the electrical impulses of the heart
A disposable electrode is held in place by - Answers An adhesive backing on the electrode
All of the following are guidelines for the electrodes except - Answers store electrodes in a
refrigerator
Leads 1,2, and 3 are the - Answers Bipolar leads
The aVR, aVL, and aVF are known as the - Answers augmented leads
Chest lead V2 is located at the - Answers fourth intercostal space at left margin of sternum
Where is chest lead V5 located? - Answers at the horizontal level of V4 at the left midaxillary line
All of the following are guidelines for patient preparation for an ECG except - Answers do not
consume food or fluids except water for 12 hours before the ecg