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Ch 26
ECGs
| Question | Answer |
|---|---|
| Which electrode is considered the ground electrode? | Right leg |
| This artifact can occur if the electrodes are dirty or expired or if the gel on the electrodes is dried. | Wandering baseline |
| The _____ is considered the pacemaker of the heart. | SA node |
| The patient talks during the ECG. What artifact could occur? | Somatic tremor |
| The patient’s heart rate is 38 beats per minute. What changes should you make before obtaining the tracing? | Decrease the chart speed. |
| What chest electrode is placed on the same horizontal plan as V4 at the midaxillary line? | V6 |
| What is true regarding the ST segment? | The ST segment is an isoelectric line. |
| What occurs during the QRS complex? | Atrial repolarization and ventricular depolarization |
| The contractive phase of the heartbeat is: | systole. |
| A record or recording of electrical impulses of the heart produced by an electrocardiograph. | ECG and EKG |
| The valve between the left upper and lower chambers of the heart is the: | mitral valve. |
| The valve between the left upper and lower chambers of the heart is the tricuspid valve. | False |
| The patient’s heart rate is 150 beats per minute. What changes should you make before obtaining the tracing? | Increase the chart speed. |
| The Q wave represents atrial depolarization. | False |
| A period of time between two points or events on the ECG tracing. | Interval |
| Use of ultrasonic waves directed through the heart to study the structure and motion of the heart is: | ECHO |
| Lead II is created using the: | right arm and left leg electrodes. |
| A resting 12 lead ECG: | uses 10 electrodes and lead wires. |
| A patient needs to do an exercise stress test. The patient should not take a dose of Viagra, Cialis, or Levitra for erectile dysfunction ____ hours before a stress test. | 48 |
| An ECHO is used to study the electrical activity of the heart. | False |
| On an ECG tracing, what represents a period of time with no electrical activity? | an isoelectric line |
| The adult heart rate is below 60 beats per minute, and this is a normal rhythm for well-conditioned athletes. | Sinus bradycardia |
| This artifact can occur if the electrodes are placed on bony areas or with the breathing movement. | Wandering baseline |
| The phase of the heartbeat when the heart is at rest and the atria fill with blood is: | diastole |
| This test allows the patient to record an ECG when symptoms occur. The patient may use the test for 30 days. | Cardiac event recorder |
| Artifact appears on aVR. Which lead wire and electrode would you check? | A, B, and C |
| ________ artifact occurs when the tracing looks normal at the beginning, but then goes all over when the electrical connection is interrupted. | Interrupted baseline |
| The AV node is the pacemaker of the heart. | False |
| Upward movement away from the baseline in an ECG tracing. | Upward movement away from the baseline in an ECG tracing. |
| What chest electrode is placed on the fifth intercostal space on the mid-clavicular line? | V4 |
| The state where the cardiac cells are recovering. | Repolarized state |
| This arrhythmia occurs when the ventricles quiver uncontrollably | Ventricular fibrillation |
| The R wave is a large triangular shaped wave. | True |
| The valve between the left upper and lower chambers of the heart is the tricuspid valve. | False |
| This arrhythmia occurs when the atria contracts sooner than they should. | Premature atrial contraction |
| The V2 electrode is placed on the fourth intercostal space at the right sternal edge. | False |
| Which structure is created from the repolarization of the ventricles? | T wave |
| What is the default gain or sensitivity? | 10 mm/mV |
| For this condition, place chest electrodes on the right side of the chest using the same intercostal spacing and landmarks. Switch the right and left limb lead wires. | Dextrocardia |
| ________ artifact appears as jagged peaks with irregular height and spacing. | Somatic tremor |
| The pacemaker of the heart is the: | sinoatrial node. |
| The atrioventricular bundle is the same as the: | bundle of His and AV bundle. |
| What is true regarding standard leads? | Created from a measurement of current traveling from a negative pole to the positive pole |
| A patient needs to do an exercise stress test. The patient can drink alcohol and caffeine until ____ hours before the test. | 3 |
| On an ECG tracing, what is made up of many waves? | Complex |
| Lead III is created using the: | left arm and left leg electrode. |
| A patient needs to do an exercise stress test. The patient should not take a dose of Viagra, Cialis, or Levitra for erectile dysfunction ____ hours before a stress test. | 48 |
Created by:
roxi00