Download EKG Test Questions and Answers: AV Blocks, Axis Deviation, and MI and more Exams Medicine in PDF only on Docsity!
BAYCARE EKG TEST ALL QUESTIONS AND CORRECT DETAILED
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The AV blocks with a constant PR interval are Select one: a. First-degree AV block and Wenckebach. b. Wenckebach and third-degree AV block. c. First-degree AV block and Mobitz II second-degree AV block. d. First-degree AV block and third-degree AV block.` - CORRECT ANSWER-First-degree AV block and Mobitz II second-degree AV block.. In which kind of AV block do NONE of the sinus impulses reach the ventricles? Select one: a. First-degree AV block b. Wenckebach c. Mobitz II second-degree AV block d. Third-degree AV block - CORRECT ANSWER-Third-degree AV block. In first-degree AV block, the site of the block is the Select one: a. Sinus node. b. AV node. c. Interatrial tracts. d. Bundle branches. - CORRECT ANSWER-AV node.. In AV blocks, the P-P interval is Select one:
a. Regular. b. Irregular. c. Absent. d. The same as the R-R interval. - CORRECT ANSWER-Regular.. Wenckebach is characterized by Select one: a. Gradually prolonging PR intervals. b. Constant PR intervals. c. Absent P waves. d. Wide bizarre QRS complexes - CORRECT ANSWER-Gradually prolonging PR intervals.. Third-degree AV block has Select one: a. One P wave to each QRS. b. A varying R-R interval. c. A constant PR interval. d. A varying PR interval. - CORRECT ANSWER-A varying PR interval.. The type of AV block characterized by two P waves to each QRS and a constant PR interval is Select one: a. First-degree AV block. b. Third-degree AV block. c. Wenckebach. d. 2:1 AV block. - CORRECT ANSWER-2:1 AV block.. Treatment for first-degree AV block involves Select one: a. Atropine.
c. Third-degree AV block. d. Fourth-degree AV block - CORRECT ANSWER-Second-degree AV block.. An axis of - 120 degrees is Select one: a. Normal axis. b. Left axis deviation. c. Right axis deviation. d. Indeterminate axis - CORRECT ANSWER-Indeterminate axis.. Right ventricular hypertrophy is most commonly caused by Select one: a. Atrial fibrillation. b. Heart attack. c. Hypertension. d. Chronic lung disease. - CORRECT ANSWER-Chronic lung disease.. Normal axis is between Select one: a. 0 and +90 degrees. b. 0 and- 90 degrees. c. +90 and ±180 degrees. d. - 90 and±180 degrees - CORRECT ANSWER- 0 and +90 degrees.. Left bundle branch block (LBBB) Select one: a. Is almost always indicative of heart disease. b. Is more serious than RBBB. c. Is characterized by a QS or RS pattern in V1. d. All of the above. - CORRECT ANSWER-Is almost always indicative of heart disease. Is more serious than RBBB. Is characterized by a QS or RS pattern in V1.
A QS pattern in V1 is characteristic of Select one: a. Complete heart block. b. Mobitz II second-degree AV block. c. LBBB. d. RBBB. Feedback - CORRECT ANSWER-LBBB.. Indeterminate axis is between Select one: a. 0 and+90 degrees. b. 0 and - 90 degrees. c. +90 and ±180 degrees. d. - 90 and ±180 degrees. - CORRECT ANSWER-- 90 and ±180 degrees Ventricular hypertrophy is Select one: a. Excessive growth of ventricular myocardial tissue. b. Excessive growth of atrial tissue. c. Characterized by low-voltage QRS complexes. d. Characterized by tall, pointy P waves. - CORRECT ANSWER-Excessive growth of ventricular myocardial tissue.. Left ventricular hypertrophy is most commonly caused by Select one: a. Atrial fibrillation. b. Heart attack. c. Hypertension. d. Chronic lung disease. - CORRECT ANSWER-Hypertension.. Right bundle branch block (RBBB) is characterized by Select one: a. RSR' configuration in V1. b. Tall, pointy P waves.
b. 0 and - 90 degrees. c. +90 and ±180 degrees. d. - 90 and ±180 degrees. - CORRECT ANSWER- 0 and - 90 degrees.. A disorder in which there is too much potassium in the bloodstream is called Select one: a. Hyperkalemia. b. Hypokalemia. c. Hypercalcemia. d. Hypocalcemia - CORRECT ANSWER-Hyperkalemia.. In a lateral wall MI, which coronary artery is occluded? Select one: a. Right b. Left anterior descending c. Circumflex d. Aorta - CORRECT ANSWER-Circumflex. ST segment elevation is indicative of Select one: a. Myocardial necrosis. b. Myocardial ischemia. c. Myocardial injury. d. Abnormal atrial depolarization. - CORRECT ANSWER-Myocardial injury.. A posterior infarction is usually caused by occlusion of which coronary artery? Select one: a. Left main b. Circumflex c. Left anterior descending d. Right coronary artery - CORRECT ANSWER-Right coronary artery. If the transition zone is between V1 and V2, the EKG is said to have Select one:
a. Malrotation. b. Clockwise rotation. c. Counterclockwise rotation. d. Normal R wave progression. - CORRECT ANSWER-Counterclockwise rotation.. Which of the following is a reciprocal change? Select one: a. ST elevation b. T wave inversion c. ST depression d. Significant Q waves - CORRECT ANSWER-ST depression. Which of the following is a reciprocal change seen in the area opposite an infarct? Select one: a. ST elevation b. ST depression c. Tall, pointy T waves d. Widened QRS complexes - CORRECT ANSWER-ST depression. An inferior MI is most often caused by occlusion of which coronary artery? Select one: a. Right coronary artery b. Left main c. Circumflex d. Left anterior descending - CORRECT ANSWER-Right coronary artery. The order in which an MI progresses through "the three Is" is which of these? Select one: a. Ischemia, injury, infarction b. Ischemia, infarction, injury c. Infarction, ischemia, injury d. Injury, infarction, ischemia - CORRECT ANSWER-Ischemia, injury, infarction.
Subendocardial MI is an old term for Select one: a. Inferior MI. b. NSTEMI. c. STEMI. d. Transmural MI. - CORRECT ANSWER-NSTEMI.. A STEMI typically Select one: a. Damages only the innermost layer of myocardium. b. Does not cause the development of significant Q waves on the EKG. c. Is dangerous because it can herald a subendocardial MI soon to come. d. Is an MI that damages the full thickness of the myocardium in a certain area. - CORRECT ANSWER-Is an MI that damages the full thickness of the myocardium in a certain area A fixed-rate pacemaker Select one: a. Fires only on demand. b. Senses intrinsic beats. c. Fires at its preset rate regardless of intrinsic beats. d. Is called synchronous. - CORRECT ANSWER-Fires at its preset rate regardless of intrinsic beats.. Beta-blockers must be used with caution in patients withSelect one: a. Supraventricular tachycardia. b. Asthma or chronic lung disease. c. Hypertension. d. Atrial tachycardia. - CORRECT ANSWER-Asthma or chronic lung disease Your patient is in pulseless ventricular tachycardia. Your first intervention should be Select one: a. Defibrillation. b. Amiodarone bolus IV. c. Electrical cardioversion.
d. To encourage the patient to try vagal maneuvers - CORRECT ANSWER-Defibrillation.. The second letter of the pacemaker code tells the Select one: a. Chamber paced. b. Chamber sensed. c. Pacemaker's response to sensed events. d. Programmability of the pacemaker. - CORRECT ANSWER-Chamber sensed.. Mr. Jacob had a permanent DDD pacemaker implanted a few days ago. Today, he cardiac arrested and died. What happens to the pacemaker when the patient is deceased? Select one: a. The pacemaker battery fires at a slower rate for a few days, then stops. b. Nothing happens—the patient can't die with a pacemaker in place. c. The pacemaker stops automatically at the patient's death. d. The pacemaker battery continues to fire at its programmed rate until the battery runs out. - CORRECT ANSWER-The pacemaker battery continues to fire at its programmed rate until the battery runs out.. A VOO pacemaker would pace the Select one: a. Ventricle, sense the ventricle, and be inhibited by intrinsic ventricular beats. b. Atrium, sense nothing, and have no response to sensed events since it cannot sense. c. Ventricle, sense nothing, and have no response to sensed events since it cannot sense. d. Atrium and ventricle, sense atrium and ventricle, and have both an inhibitory and a triggered response to sensed events. - CORRECT ANSWER-Ventricle, sense nothing, and have no response to sensed events since it cannot sense.. Which of the following medications blocks vagus nerve effects on the heart? Select one: a. Digitalis b. Epinephrine c. Atropine d. Verapamil - CORRECT ANSWER-Atropine.
d. Defibrillation is the treatment of choice for atrial fibrillation - CORRECT ANSWER-Cardioversion involves synchronizing the shock with the cardiac cycle.. Atropine would NOT be appropriate in the treatment of Select one: a. Junctional bradycardia with heart rate of 38. b. Third-degree AV block with heart rate of 32. c. Idioventricular rhythm with heart rate of 28. d. Supraventricular tachycardia with heart rate of 167. - CORRECT ANSWER-Supraventricular tachycardia with heart rate of 167.. Mrs. McShelton has a VVI pacemaker. She is having pacemaker spikes in the T waves, QRS complexes, and ST segments of her intrinsic beats. This is indicative of Select one: a. A normally functioning pacemaker. b. Failure to fire. c. Loss of capture. d. Undersensing. - CORRECT ANSWER-Undersensing.. Certain glaucoma medications can causeSelect one: a. Bradycardias. b. An increase in heart rate. c. ST segment elevation. d. Hemiblocks. - CORRECT ANSWER-Bradycardias.. The patient who has a mild dizzy spell while Holter monitoring is in effect should Select one: a. Activate the event marker button and document the symptoms in his or her diary. b. Proceed to the nearest hospital for immediate Holter analysis. c. Call 911 for an ambulance for transport to the emergency department. d. Take the Holter off when the dizzy spell passes, as the monitoring is now complete. - CORRECT ANSWER-Activate the event marker button and document the symptoms in his or her diary..
Bayes' Theorem has to do with - CORRECT ANSWER-The sensitivity and specificity of the stress test results.. Ischemia is recognized by - CORRECT ANSWER-ST depression of 1 - 1.5 mm at 80 milliseconds after the J- point.. If your patient develops a first-degree AV block during her stress test, you should - CORRECT ANSWER- Continue, but watch the rhythm cautiously.. For purposes of ischemia evaluation, the baseline of the EKG is at the - CORRECT ANSWER-PR segment Your patient took his routine beta-blocker medication this morning just before his stress test. What effect would this likely have on the results? - CORRECT ANSWER-False negative. Mrs. Johnson has developed a severe headache and blurred vision while having a stress test. Her blood pressure is extremely elevated. The correct course of action would be to - CORRECT ANSWER-Terminate the test immediately.. If the stress test is negative and the angiogram reveals normal coronary arteries, the stress test is said to have been a - CORRECT ANSWER-True negative.. If the ST segment drops 3 mm during exercise, it is evidence of - CORRECT ANSWER-Myocardial ischemia.. The patient's blood pressure was 120/80 at rest. During the stress test, it has fallen to 90/50 and he is cold and clammy. What is the appropriate course of action? - CORRECT ANSWER-Stop the test immediately.. How much must a coronary artery be narrowed for the stress test to be positive? - CORRECT ANSWER- 75%. The target heart rate for a 60 - year-old man having a stress test is - CORRECT ANSWER-160..
Minimum Necessary means: - CORRECT ANSWER-Only use and disclose the minimum amount of protected health information necessary to do my job. A Covered Entity can never deny a patient access to their protected health information. - CORRECT ANSWER-'False'. The Privacy Rule required which of the following: - CORRECT ANSWER-Every patient receive a Notice of Privacy Practices The patient must be given the opportunity to agree or object to a disclosure when they are present and able to make that determination The semilunar valves open when the - CORRECT ANSWER-Ventricular pressure exceeds the aortic and pulmonary arterial pressures.. Pulmonary veins deliver blood to the - CORRECT ANSWER-Left atrium The innermost layer of the heart is the - CORRECT ANSWER-Endocardium.. What causes heart sounds? - CORRECT ANSWER-Closing of the heart valves. Which valves open to allow the ventricles to fill? - CORRECT ANSWER-Tricuspid and mitral. Through which structure must the blood travel in order to leave the right ventricle? - CORRECT ANSWER-Pulmonic valve. Which heart chamber delivers oxygenated blood to the entire body? - CORRECT ANSWER-Left ventricle. The heart's valves open and close in response to changes in - CORRECT ANSWER-Pressure.. Which of the following are both AV valves? - CORRECT ANSWER-Tricuspid and mitral valves.
The second heart sound (S2) is associated with closure of which heart valves? - CORRECT ANSWER-Aortic and pulmonic. The inferior vena cava returns deoxygenated blood to the heart from - CORRECT ANSWER-The lower extremities and abdomen.. The top of the heart where the great vessels emerge is the - CORRECT ANSWER-Base.. Pericardial fluid - CORRECT ANSWER-Decreases friction of the pericardial layers as they rub against each other.. The coronary circulation supplies oxygenated blood to the myocardium during - CORRECT ANSWER- Diastole.. The layer of the heart that is damaged during a heart attack is the - CORRECT ANSWER-Myocardium.. The relative refractory period extends from the - CORRECT ANSWER-Upstroke of the T wave to the end of the T wave.. After the sinus node initiates an impulse, where does the impulse go next? - CORRECT ANSWER- Interatrial tracts. In the action potential, phase 3 is - CORRECT ANSWER-Rapid repolarization.. The ventricle's inherent rate is - CORRECT ANSWER- 20 - 40 beats per minute.. The cardiac cell at rest has what kind of electrical charge? - CORRECT ANSWER-Negative charge. The P wave represents - CORRECT ANSWER-Atrial depolarization..
AVR has its positive pole on the - CORRECT ANSWER-Right arm.. If lead II's QRS complex is positive, the heart's current is traveling toward the - CORRECT ANSWER-Left leg.. The bipolar lead formed by joining the right arm and left leg is - CORRECT ANSWER-Lead II.. AVL has its positive pole on the - CORRECT ANSWER-Left arm.. An impulse that travels away from a positive electrode will write a(n) on the EKG - CORRECT ANSWER-Negative QRS complex In which lead should the tallest QRS complex be seen? - CORRECT ANSWER-Lead II. In which of the following leads should the QRS complex be negative? - CORRECT ANSWER-AVR. V1 through V6 are the - CORRECT ANSWER-Precordial leads.. Joining leads I, II, and III at their ends produce - CORRECT ANSWER-Einthoven's triangle.. AVF's negative reference point is formed by finding the midway point between which limbs? - CORRECT ANSWER-Right arm and left arm Some modern EKG machines are Bluetooth-capable, allowing EMS workers to - CORRECT ANSWER- Transmit the EKG to the nearest hospital so workers can prepare for the patient's arrival.. To minimize artifact, what must be done? - CORRECT ANSWER-Attach electrode patches securely Tell the patient not to move during the EKG
The artifact caused by the jiggling of wires during toothbrushing is called - CORRECT ANSWER- Toothbrush Tachycardia.". The "gain" setting on the EKG machine is concerned with - CORRECT ANSWER-The amplitude of the waves and complexes.. Your patient for a 12 - lead EKG has no legs as a result of bilateral amputations. Where should you put the leg electrodes? - CORRECT ANSWER-On the lower abdomen above where the legs would be. Small adhesive patches with conductive gel on the skin side are - CORRECT ANSWER-Electrodes.. The most common cause for the P wave, QRS complex, and T wave to be inverted in lead I is - CORRECT ANSWER-Incorrect lead placement.. Electrically speaking, the heart is a - CORRECT ANSWER-Transmitter.. Electrical shock is LEAST likely to be caused by which of the following? - CORRECT ANSWER-Properly maintained EKG machine. Somatic tremor artifact is commonly caused by - CORRECT ANSWER-Patient movement.. Muscle artifact can be minimized by monitoring the patient in lead - CORRECT ANSWER-V1 or MCL1.. Your patient is smiling and visiting with family, but the cardiac monitor shows that the patient's heart has completely stopped. The rhythm on the monitor is thus - CORRECT ANSWER-Artifact.. If artifact is present in leads I, II, and AVR, the most likely source of the artifact is on the - CORRECT ANSWER-Right arm.. On your patient's 12 - lead EKG, lead I's waves and complexes are completely negative. AVR's waves and complexes are completely positive. The most likely cause of this is - CORRECT ANSWER-Right and left arm leads inadvertently reversed
