25 terms

Chapter 20 The electrocardiogram (RMA)

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