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19 Cards in this Set
- Front
- Back
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Electrocardiogram |
Record of the electrical activity of the heart |
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Tachycardia |
Heart rate greater than 100 beats per minute in an adult |
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Normal sinus rhythm |
Electrical activity appears normal and the signal arises within the SA node |
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Ventricular fibrillation |
Life threatening dysrhythmia that causes the ventricular myocardium to quiver in an uncoordinated and ineffective way |
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Sinoatrial node |
Place where the electrical signal normally arises |
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Bradycardia |
Heart rate below 60 beats per minutes |
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Sinoatrial node |
Pacemaker of the heart |
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Ectopic focus |
Area outside of the SA node that gives rise to an electrical signal |
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QRS complex |
EKG deflection that indicates ventricular depolarization |
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Right atrium |
Location of the SA node |
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Bundle of his |
The electrical signal spreads from AV node to this structure |
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Purkinje fibers |
These fast conducting fibers spread the electrical signal throughout the ventricular wall |
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AV node |
Electrical signal travels here from the SA node |
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P wave |
EKG deflection that indicates atrial depolarization |
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QRS complex |
EKG deflection that indicates atrial repolarization |
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60 beats per minute |
A trial cell beats about this many times per minute |
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Autonomic Nervous system |
These nerves act to increase or decrease the heart rate |
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75 beats per minute |
Average heart rate in an adult in beats per minute |
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T wave |
EKG deflection that indicates ventricular repolarization |
