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CMA CH.11 (MJCC)
| Question | Answer |
|---|---|
| The impulse from the AV node is picked up by ______. | Bundle Of His |
| The contractive phase of the heartbeat is ______. | Systole |
| Oxygenated blood leaves the heart through the ______. | Aorta |
| Blood returns from the head, neck, and upper extremities through the _______. | Superior vena cava |
| Another name for the bicuspid valve is _____. | Mitral valve. |
| The valve between the left upper and lower chambers of the heart is the _______. | Mitral valve |
| The valve between the right upper and lower chambers of the heart is the ______. | Tricuspid Valve. |
| The PR Segment ________ | Follows the P wave, appears as an isoelectric line, is created as the impulse moves slowly through the AV node, Is the time between the end of the artial depolarization and the start of the ventricular depolarization. |
| What state creates electrical activity that can be picked up on the ECG tracing? | Depolarized state and repolarized state |
| The atrioventricular bundle is the same as the ______. | Bundle of his and AV bundle. |
| _______ transmit the impulse quickly and efficiently to the ventricular myocardial cells. | Purkinje fibers |
| ______ is the state when the cardiac cells are resting | Polarized state |
| _______ is the state where the cardiac cells are recovering. | Repolarized state |
| Lead II is created using the ________ | Right arm and left leg electrodes. |
| Lead I is created using the ______ | right arm and left arm |
| Which electrode is considered the ground electrode? | Right Leg |
| What interval represents atrial depolarization? | PR interval |
| Which structure is created from the repolarization of the ventricles? | T wave |
| The _____ is the point where the QRS complex ends and the ST segment starts. | J Point |
| For this condition, place chest electrodes on the right side of the chest using the same intercostal spacing and landmarks. Switch the right limb lead wires. | Dextrocardia |
| What is the default gain or sensitivity? | 10mm/mV |
| What is true regarding the thermal ECG papaer? | A small box is 2 mm x 2mm, A large box is made of 25 small boxes, and has a special heat sensitive coating that allows the tracing to be "burnt" on the paper. |
| What is true regarding precordial leads? | Are unipolar leads, Include V1 to V6 leads, and for artifact on V6 lead, the medical assistant should check V6 electrode and lead wire. |
| The ______ is considered the pacemaker of the heart. | SA node |
| The phase of the heartbeat when the heart is at rest and atria fill with blood is ____. | Diastole |
| What is true regarding maintenance of the electrocardiograph? | Do not dispose of the leaed wires, store the lead wires, store the elad wires and patient cable with care in a loose coil, and refer to the operator's manual for cleaning instructions for the casing ans stylus. |
| This monitors the heart over a 24- to 48 hour period while the patient goes about his or her normal activates. | Holter monitor |
| This arrhythmia occurs when there is a disruption of the electrical impulse through the heart. | Heart block |
| This arrhythmia occurs when the ventricles quiver uncontrollably. | Ventricular Fibullation |
| A patient needs to do an exercise stress test. What information should the medical assistant give the patient prior to the test? | The patient will sign a consent form prior to the test. |
| Somatic tremor artifact is observed on the ECG tracing. What should the medical assistant do to eliminate the artifact? | Cover the patient wit a blanket. |
| Making sure cell phones are not near the procedure area will help decrease this type of artifact. | AC Interference |
| Turning on the muscle trenor filter will help decrease this type of artifact. | Somatic tremor |
| This artifact can occur if the electrodes are placed on bony area or with the breathing movement. | Wandering baseline |
| What chest electrode is placed on the same horizontal plan as V4 at the midaxillary line? | V6 |
| Lead III is created using the ______. | Left arm and left leg electrode. |
| On an ECG tracing what represents a period of time with no electrical activity? | An isoelectric line. |
| A patient needs to do an exercise stress test. The a patient should not take a dose of Viagra, Cialis or Levitra for erectile dysfunction _____ hours before a stress test. | 48 hours |
| A patient needs to do an exercise stress test. The patient can drink alcohol and caffeine until _______ hours before the test. | 3 hours |
| The adult heart rate is below 60 beats per minute, and this is normal rhythm for well-conditioned athletes. | Sinus bradycardia |
| This is a normal rhythm. | Sinus Rhythm |
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