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chapter 11
| Question | Answer |
|---|---|
| arrhythmia | an abnormal heart rate or rhythms |
| artifac | a substance, structure or even that does not naturally occur in a situation |
| bipolor | having 2 poles or electrical charges |
| caliper | a pocket sized tool used for measuring the height and width of the ECG waves |
| dextrocardia | the condition in which the heart is located on the right side of the chest. |
| echocardiography | the use of ultrasonic waves directed through the heart to study the structure and motions |
| echocardiogram | a record or recording of electrical impulses of the heart as produced by a echocardiography |
| electrodes | adhesive patches that conduct electricity from the body |
| ion | an electrically charged atom or the smallest component of an element |
| unipolar | having one pole or electrical charge |
| what is a mitral valve and where is it located | found between the left atrium and right ventricle |
| what is a tricuspidvalbe and where is it located | between right atrium and left ventricle |
| what is another name for bicuspid valve | mitral valve |
| the impulses from the AV node is picked up by what | the bundle of HIS |
| the ____ is the contractive phase of the heartbeat | systole |
| oxygenated blood leaves the heart through the what | aorta |
| blood returns from the head, neck , and upper extremities through what | superior vena cava |
| what is the PR segment and where is it located | time between the end of the atrial depolarization and start of the ventricular |
| what is the polarized state | cells is in a resting state |
| what do the purkinje fibers do | Transmit the impulse quickly & efficiently to the ventricular cardiac cells |
| The state where the cardiac cells are recovering is called what: | Repolarized state |
| The atrioventricular bundle is the same as what: | Bundle of His |
| What is the J point: | Where the QRS complex ends and the ST segment begins |
| Lead II is created by using what electrodes | Right arm to left leg |
| Lead I is created by using what electrodes | Right arm to left arm |
| The P wave represents what | Atrial depolarization |
| the right (R) electrode is considered to be the ground electrode: | Right leg |
| The T wave is created from what | Ventricular repolarization |
| What are standard leads: | Bipolar lead or standard leads are named leads I, II, and III. They use arm and leg electrodes to create pictures of the vertical (frontal) plane of the heart |
| What is the default gain or sensitivity | Regulates the height of tracing (10 mm/mV) |
| What is thermal ECG paper (give details): | ECG machines with printers use special ECG paper (E-fold paper or 8.5x11 |
| What are the precordial leads (give details): | Chest precordial leads are unipolar leads. Provide information on the horizontal (front to back) plane of the heart |
| What are the augmented leads (give details): | (augmented leads) provides info on the vertical frontal plane of the heart For what condition do you 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 |
| The sinoatrial node is considered the pacemaker of the heart | Sinoatrial node |
| What is maintenance of the electrocardiograph | Clean leads; handle with care; clean the tracing stylus and the machine as indicated |
| What is diastole: | A phase the heart is at rest and blood fills the atria |
| What is a holter monitor (give details): | Used to monitor the heart over a 24–48 hr period while pt goes about normal activities |
| what information should be collected from the patient before they are given a stress test | Medical history, meds list, drug restriction, functional capacity |
| What is ventricular fibrillation | Occurs when the ventricles quiver uncontrollably |
| What is a heart block: | Where there is a disruption or slowing of the electrical impulse through the heart |
| What is the isoelectric line: | Straight line (baseline); represents a period of time with no electrical activity |
| What should the medical assistant do to eliminate the artifact if the somatic tremor is observed on the ECG?: | Lower head, remind patient not to move, use larger scan block |
| Making sure cell phones are not near the procedure area will help decrease what type of artifact?: | AC interference |
| By turning on the muscle tremor filter will help decrease what type of artifact?: | Somatic tremor |
| How is lead III created? | Measuring electrical difference between LA and LL |
| What chest electrode is placed on the same horizontal plane as V4 at the midaxillary line? | V6 |
| What is wandering baseline?: | Movement of the patient or electrodes causing the isoelectric line to shift up and down |
| What is sinus rhythm? | Consistent normal rhythm that begins in the SA node and goes through the AV node |
| What is sinus bradycardia?: | Atrial heart rate below 60 beats per minute |
| If the patient is going to do an exercise stress test the patient can drink alcohol and caffeine until how many hours before test?: | 3 hours |
| if a patient is going to take an exercise stress test they are not to take Viagra, Cialis, or Levitra for erectile dysfunction for how many hours before the test? | : 48 hours |
Created by:
Valentine.Taylor