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20 Cards in this Set
- Front
- Back
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Artifacts
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Deflections caused by electrical activity other than from the heart; irregular and erratic markings
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Atrial fibrillation
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There are many as 350 irregular P waves and 130-150 irregular QRS complexes per minute
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Atrial Flutter
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This rapid fluttering of the upper chambers appears on the electrocardiogram like the pattern of teeth on a saw. The atrial rate is 250-350/minute. Not all the impulses are conducted through the AV node because they are coming too fast. There is some "blockage" at the AV node. This is one type of heart block
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Baseline
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No electrical charge or activity; return to zero; flat on electrocardiogram recording. Also known as isoelectric line.
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Cardiac rate
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Pulse rate, number of beats or contractions per minute
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Depolorized
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Discharge of electrical activity that precedes contraction
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Electrolyte
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Material applied to the skin to enhance contact between skin and the sensor
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Leads
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An electrical connection to the body to receive data from a specific combination of sensors
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Pardxysmal artial tachycardia
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This is a common arrhythmia, usually seen in young adults with normal hearts. There are no visible P waves because they are hidden by the T wave of the previous cycle. The atrial rate is between 140-250/minute. In many ways it looks on the ECG like repeated PACs
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Polarized
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State of electrical charge in living cells
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Premature artial contractions (PAC)
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There is an early P wave occuring before expected, usually from a source outside the sinus node. Therefore P waves are distorted
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Premature ventricular contractions PVC
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The wide QRS complexed occur without preceding P waves. They may be caused by electrolyte imbalance, stree, smoking, alcohol or toxic reactions to drugs and in a majority of patients who have had a heart attack
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QRS Complex
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Multiple waves or deflections occurring in a group
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Segment
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Time from the end of one phase to the beginning of another phase
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Sinus arrhythia
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Normall seen in children and young adults, all aspects of the EKG are normal except the irregularity. The space between QRS complexes is not equal. The heart rate increases on inspiration and decreases on expiration
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Sinus bradycardia
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Less than 60 beats per minute; cycles are normal
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Sinus tachycardia
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Over 100 beats per minute; cycles are normal
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Tracing
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Recording
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Ventricular fibrillation
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The waves are irregular and rounded, the contractions uncoordinated, death may occur in as little as 4 minutes
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Ventricular tachycardia
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Three or more consecutive PVCs. Usually originating below the SA node, the complexes are wide and bizarre in appearance
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