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21 Cards in this Set
- Front
- Back
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The first cardiac pacemaker is planted by who and in what year? |
1958 by Ake Senning |
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When using electrocardiography, health professionals will? |
Attach so-called electrodes to the chest, wrist and ankles |
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What does the electrocardiogram show? |
It will show how fast the heart is beating, if the rhythm of the beating is irregular or not, and the time of electrical impulses as they travel through the heart. |
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An EKG is done to |
Check the heart's electrical activity; find cause of chest pains such as inflammation, angina or heart attack; determine if walls of the heart chambers are too thick. |
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What questions should I ask the patient when preparing for an EKG?How should the patient be dressed? |
As medications may interfere with the test results, it is important to ask a patient about medications, prescriptions or non prescriptions, they are taking. Instruct patient to remove all jewelry. Men are generally bare chested, while women are often wearing bras or gowns |
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What is the test procedure? |
Patients will lie on bed; test usually takes 5 to 10 minutes; areas where electrodes are placed need to be cleaned and/or shave; several electrodes are placed on arms, legs and chest. |
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Factors that can affect the test |
Exercising before testing, moving or talking during the procedure, certain medications |
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Normal Rhythm of the heart is usually between |
60 and 100 beats per minute (bpm) |
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The EKG is... |
The translation of the heart activity into tracings on paper. These tracings are shown in lines as spikes and dips, and I called waves. |
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Lead one |
The information between aVR and aVL |
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The chest leads are placed... |
In specific areas of the chest, over regions of the heart from right to left, and record the third dimension of the heart |
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The waves in EKG show |
The sequence of repolarization and depolarization of the atria (left and right atrium) and the ventricles |
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P wave |
Shows the waves of atrial depolarization (moves from the SA node throughout the atria), duration is usually between 0.08 seconds to 0.1 second, the interval between p waves can be used to determine atrial rate |
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QRS complex |
Shows the time needed for depolarization of the ventricles |
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T wave |
Represents repolarization of the ventricles |
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Repolarization and depolarization electrical activities which cause |
Muscular activity |
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Polarization |
Cardiac cells are resting (no electrical activity takes place.) Ready phase of the heart |
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Depolarization |
The impulse that causes contraction but not the contraction itself. Initiates contraction. |
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Repolarization |
Electrical recovery of the heart as cells recharge. Hart returns to resting state |
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The color codes of the American Heart Association for lead wires are |
black: left arm white: right arm red: left leg green: right leg |
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The standard speed of an EKG printout is? Spwed selection will affect how the paper runs through the EKG. Therefore an increased speed is useful in patients with very fast heart rates. By law, EKG printouts needs to be saved for how many years? |
25 mm/sec. 5 years. |
