Chapter 20 The electrocardiogram (RMA)
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The measurement of the smallest blocks on
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1mm wide by 1mm high
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Lead I of the ECG tracing is the heart view between the
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Right arm (RA) and the left arm (LA)
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In a standard ECG lead V3 is located
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Midway between position V2 and position V4
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Proper preparation of the patient includes the following except
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Place the electrodes or sensors over bony prominences of the arms and legs where the electrical activity is more easily conducted
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The heigh of a normal standardization mark on an ECG tracing is
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10 mm
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AC interference is an artifact in an ECG tracing that means
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There is electrical interference in the room
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The cardiac testing procedure that requires the patient to keep a diary of daily activities is a
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Holter Monitor
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The ECG grounding lead is the lead attached to the
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Right leg
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The ECG tracing is printed on graph paper at a standard speed for an adult of
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25mm/sec
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Lead II of the ECG tracing records the electrical activity through the heart from the
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Right arm to left leg
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During the electrical heart cycle repolarization refers to the
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Recovering Phase
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The chest lead V1 is located at which intercostal space
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Fourth
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The image traced on the ECG paper is made by a
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Heated stylus tip that melts the coating of the paper
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The purpose of adjusting the normal standard to one-half standard is to
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Decrease the size of the patient's ECG tracing
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When a patient has trouble relaxing or cannot remain still for the ECG the artifact that may occurs is
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Somatic muscle tremor
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The type of cardiac procedure that requires the use of a treadmill is
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Cardiac stress test
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The MA should gather all the appropriate patient data before the ECG procedure except
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Date of the patient's first ECG procedure
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The leads aVR aVL and aVF are the
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Augmented voltage leads
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The QRS complex of the ECG tracing represents
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Ventricular depolarization
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The ECG marking code that represents lead V1 is
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One dash and one dot
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A long strip of QRS complexes of a certain lead used to define certain cardiac arrhythmias is a
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Rhythm strip
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If the electrodes are too loose on the patient what artifact might you find on the ECG tracing
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Wandering Baseline
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The purpose of setting the ECG paper speed at 50 mm/sec is to
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Help record rapid heartbeats
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The p wave represents the
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Atrial depolarization
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What should the MA tell a patient if the patient asks if he or she will feel any discomfort from the ECG procedure
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The ECG procedure does not hurt and does not send electricity through you
