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QUIZ 3 & 4
| Question | Answer |
|---|---|
| The Einthoven triangle is formed by the following three limb leads: | right arm, left arm, left leg. |
| Which of the following is not a type of lead used in a 12-lead ECG? | Abdomen |
| Which of the following is not considered a bipolar lead? | aVR |
| The V1 lead should be placed at the: | fourth intercostal space, right sternal border. |
| For the proper placement of V3, you must have placed which other two leads on the patient's chest? | V2 and V4 |
| Unipolar leads include all the lead types except: | standard leads. |
| To obtain a 12-lead ECG tracing, you must apply how many lead wires and electrodes to the patient? | 10 |
| The V2 lead should be placed at the: | fourth intercostal space, left sternal border. |
| The leads that make up a 12-lead ECG consist of: | 3 standard, 3 augmented, and 6 chest leads. |
| Which of the following is not a basic function of the electrocardiograph? | Analysis |
| Signal processing, which occurs inside the ECG machine, | amplifies the electrical impulse. |
| The gain control is normally set at: | 10 mm/mV. |
| Often it is difficult to read the ECG tracing if a patient's heart rate is fast. Where should you set the speed control to be able to interpret the ECG tracing more easily? | 50 mm/sec |
| The usual setting for the artifact filter is: | 40 to 150 Hz. |
| You are preparing to conduct a 12-lead ECG on a patient. As you are gathering your supplies, you notice that five of the electrodes are made by one company and the other five electrodes are made by another company. What is your next step? | Find a complete set of 10 electrodes that are the same. |
| Which type of electrode is preferred for use in a hospital or acute care setting? | Silver electrodes |
| The ECG graph paper represents time horizontally and voltage vertically. What time and voltage are represented by one large box? | 0.20 second and 0.5 mV |
| You are performing a 12-lead ECG on a hospital patient using a portable ECG machine on a cart. As you are conducting the ECG, a red line appears at the bottom of the ECG graph paper. What should you do? | Continue the ECG, but remember to replace the paper before performing the next ECG. |
| Each little box on the ECG paper horizontally represents: | 0.04 second. |
| Which of the following is an advantage of using dot matrix paper instead of the standard grid paper? | Dot matrix paper produces sharper photocopies than standard grid paper. |
| Which of the following substances can accidentally erase an ECG tracing? | Plastic |
| Which one of these is not a commonly used method to calculate heart rates? | 1-minute method |
| Which method is the only one to be used for irregular rhythms? | 6-second method |
| When estimating the heart rate with the 6-second method, you locate 6 seconds on a rhythm strip, count the number of complexes, and multiply by: | 10. |
| Which method of calculating the heart rate is shown below? | 1500 method |
| Using the 1500 method, calculate the heart rate. | 40 bpm |
| Which heart rate method is the most accurate with regular rhythms? | 1500 method |
| To perform an ECG with accuracy, the best source to obtain specific information about the machine you are using is to consult: | the manufacturer's instructions. |
| A multichannel ECG monitors all 12 leads but usually records how many leads at one time? | 3 leads |
| Which of the following is a valid reason to change the speed of the ECG tracing? | You cannot clearly identify the waves because they are too close together. |
| If you attempt to record an ECG and no tracing appears, what should you do? | Recheck the lead wires to make sure they are placed correctly. |
| The term bradycardia means: | slow heart rate. |
| The term tachycardia means: | fast heart rate. |
| How many leads does a multichannel recorder monitor at one time? | 12 |
| The process of studying a current ECG tracing along with older ECGs taken at intervals to note differences in a patient's condition is: | serial ECG comparison. |
| The control on the ECG machine that increases or decreases the size of the ECG tracing is the: | gain control. |
| Which of the following conditions can an ECG machine detect if you set up heart rate limits on the machine? | Tachycardia |
| Which type of electrode is most commonly used to perform an ECG? | Disposable |
| When serial ECGs are performed on a patient, which of the following guidelines should be followed to ensure accurate results? | The electrode placement must be the same for each ECG. |
| You are preparing to perform an ECG on a patient. When you open a new package of disposable electrodes, you notice that the gel appears to have dried out on some of the electrodes. What should you do? | Discard the electrodes and open another package. |
| ECG machines are calibrated so that: | 1 cm = 1 mV. |
| Estimate the heart rate using the R-R method. | 150 bpm |
| Estimate the heart rate using the 1500 method. | 100 bpm |
| Use the 1500 method to estimate the heart rate. | 100 bpm |
| Use the R – R method to estimate the heart rate. | 150 bpm |
| Use the 6-second method to estimate the heart rate. Note: This strip represents exactly six seconds. | 140 |
| Which method of estimating heart rate should you use for this tracing, and what is the estimated heart rate? | 1500 method, 100 bpm |
| How long must the ECG tracing be maintained as part of a patient's medical record? | 7 years |
| Unwanted marks on an ECG tracing that are not related to the heart's electrical activity are known as: | artifact |
| The ECG waveform is indicative of: | how the heart is functioning electrically. |
| The first thing that is needed to perform an ECG is: | a physician order for the test. |
| What information must be included on the ECG requisition? | Location and date of recording |
| You have an order to perform an ECG on a 76-year-old woman. knock on the door , introduce yourself, and explain ECG. You explain the procedure, woman refuses to allow you to do the ECG. What should you say to the patient? | "Will you tell me why you don't wish to have an ECG done?" |
| While preparing to perform an ECG on a 15-year-old girl, you pull the curtain around her hospital bed. The patient becomes agitated and asks why you closed the curtain. What should you tell her? | You are providing privacy for the patient. |
| Which rib is located next to the angle of Louis? | Second rib |
| When properly positioning the chest lead electrodes, you should make sure that the electrode is placed on the ________of the rib cage. | intercostal space |
| When applying the chest leads, you will place the V6 lead: | in line with V4 on the midaxillary line. |
| Which anatomical landmark starts in the middle of the axilla and runs down the side of the chest? | Midaxillary line |
| Which of the following chest leads are placed on the chest using specific anatomical landmarks? | V1, V2, V4, V5, and V6 |
| When applying chest leads, you will place the V2 lead: | at the fourth ICS, left sternal border. |
| How can you be certain you are attaching the lead wires to the electrodes properly? | Check the manufacturer's directions in the instruction manual |
| You should place the limb electrodes before the chest electrodes because: | the ECG will not run at all without the limb leads attached. |
| The patient has a cast on his lower left leg. The limb electrode placement should be: | at equal levels on the thighs. |
| When placing the chest electrodes on a female with large breasts, you must: | lift the breast and place the electrodes in the closest position possible. |
| Electrical safety is maintained while performing an ECG by all of the following except: | removing any electrical equipment from the patient's body. |
| Approach the patient from the patient's ________if possible when performing an ECG. | left side |
| Which of these tasks does not necessarily need to be done before operating the ECG machine? | Enter the correct ICD-10 code. |
| You are about to record an ECG on a patient who has Parkinson's disease. What measures can you take to prevent somatic tremors from being recorded on the ECG recording? | Have the patient put his or her hands, palms down, under the buttocks. |
| Which of the following problems can cause wandering baseline on the ECG tracing? | Improperly applied electrodes or poor skin preparation |
| Which of the following causes AC interference artifact? | Lead wires crossed and not pointed toward the hands and feet |
| What type of artifact is shown in the figure? | Wandering baseline |
| What type of artifact is shown in the figure below? | AC interference |
| If the ECG was ordered stat, what must be done with the results? | Give the results directly and immediately to the physician. |
| How should you clean the cables and electrode clips on the ECG machine? | Use a soft cloth moistened with disinfectant or packaged wipes. |
| You are preparing to perform a 12-lead ECG on a 7-year-old child. When communicating with this patient, you should: | avoid using technical words. |
| For infants and small children, where may you have to place lead V3 to prevent crowding of the chest electrodes? | On the right side of the chest |
| What is the difference between continuous cardiac monitoring and a routine ECG? | Only three electrodes are used. |
| You are recording an ECG tracing on a female patient who has had a mastectomy. Your responsibilities include: | documenting this information on the ECG tracing. |
| If your patient is in a permanent fetal position with her arms drawn tightly over the chest, where do you position the electrodes? | On the back |
| If you record more than one ECG during a Code Blue emergency, it is important to note which of the following? | Indicate on tracing "repeat ECG-same lead placement" |
| Which landmark is an imaginary line on the chest that runs vertically through the center of the clavicle? | Midclavicular line |
| The standardization mark on a manual ECG machine should be inserted: | between the T wave of one complex and the P wave of the next. |
| Which lead is typically used during continuous cardiac monitoring to provide the best view of the P wave? | II |
| While preparing to perform an ECG on a patient, you ask her if she is on any medications. She replies that she is taking Lipitor and Norpace. You should: | write the names of the medications on the ECG report. |
| After you have prepared the ECG machine and attached the electrodes and leads to the patient, what is the next thing you do if you are using an automatic ECG machine? | Press the Run or Auto button on the ECG machine. |
| When you have completed a routine ECG, how should you report the results? | Use the method required by the facility where you are working. |
| An ICD-10 code is a(n) | diagnostic code used by the billing department. |
| In most facilities, who is responsible for everyday care and maintenance of the ECG machine? | The ECG technician |
| Which of the following is not commonly performed as part of routine maintenance of an ECG machine? | Sterilizing the cables |
| If a patient has breast implants, what modification may be necessary when you place the chest electrodes? | Place V1 and V2 a little higher on the chest. |
| How should you position a pregnant woman for an ECG? | Rolled slightly to her left side |
| For which of the following patients might a physician order a right-side 12-lead ECG? | A patient with dextrocardia |
| Where should you place V7 when you are performing a posterior 12-lead ECG? | In a straight line from V6 on the left posterior axillary line |
| Using proper body mechanics includes: | using movements that maintain your posture. |
| The purpose of practicing proper body mechanics is primarily to: | prevent injuries to yourself or the patient. |
| You need to perform an ECG on a patient who weighs 285 pounds. The patient is brought into the room in a wheelchair and informs you that she cannot move to the ECG table without assistance. What should you do? | Ask a co-worker to assist you in moving the patient |
| You are trying to perform an ECG on an infant, but the infant is scared and is crying hysterically. The parents have tried to calm him, but without success. What is your best course of action? | Wait until the infant falls asleep |
| Why are lead II or a modified chest lead the preferred leads for continuous cardiac monitoring? | These leads provide the best ability to view the P wave. |
| As you are preparing to perform an ECG on a 47-year-old patient, the patient has a seizure. The patient is not yet on the ECG table; she is lying on the floor next to the table in the procedure room. Which of the following actions should you take? | Remove any objects in the area that may cause injury |
| Which of the following techniques is the BEST demonstration of proper body mechanics? | Lift with your legs, not your back |
Created by:
Nisha97