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35 Cards in this Set
- Front
- Back
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What is an entire cardiac cycle?
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PQRST Complex
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What does the P wave show?
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Beginning of cardiac depolarization
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The PR Interval shows what?
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Beginning of atrial contraction to beginning of ventricular recovery
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THE QRS Complex shows what?
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Contraction of both ventricles
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What segment shows the time between the end of ventricual contraction and beginning of ventricular recovery?
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ST Segment
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The T wave shows repolarization of the what?
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Ventricles
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U wave usually means what?
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Low potassium level
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What makes the image on EKG paper?
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Stylus
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1 small square measures 1mm every what second?
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0.04
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1 large square measures how many mm's every 0.2 seconds?
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5 mm's
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The first three leads are _____ leads?
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Bipolar
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Lead I is what electricity activity?
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Right arm and left arm
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Lead II is what electricity activity?
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Right arm and left leg
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Lead III is what electricity activity?
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Left arm and left leg
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The last 3 leads are ________ leads.
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Augmented
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AVR stands for?
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Augmented Voltage Right arm
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AVL stands for?
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Augmented Voltage Left leg
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AVF stands for?
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Augmented Voltage F for left leg
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AVR is the activity from midway bteen LLand the LA to the ....?
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Right Arm
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AVL is the activity between RA and the LL to the .....?
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Left Arm
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AVF is the activity between the RA and LA to the......?
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Left Leg
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Pre cordial leads belong on the ......?
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Chest
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V1 is placed where?
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4th intercostal space on the right side
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V2 is placed where?
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4th intercostal space on the left side
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V3 is placed where?
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Between V2 and V4
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V4 is placed where?
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5th intercostal space on the left side (mid clavicular line)
Under nipple |
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V5 is placed where?
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On a horizontal line with V4 at the anterior axillary line
Between V4 and V6 |
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V6 is placed where?
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On the midaxillary line
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What is an artifact?
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Unwanted movement
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If the stylus shifts away from the center of the paper, this is called _______.
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WAndering baseline
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Somatic tremor is caused by....?
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Muscle movement
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What does somatic tremors look like on an EKG?
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Jagged peaks of irregular height
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AC Interferrence looks like __________ on an EKG?
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Series of small uniform spikes
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When the stylus moves violently up and down, this is called what?
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Interrupted baseline
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With a rhythm strip, a physician can determine what 2 things?
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Heart rate and rhythm
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