EKG Test

It is permissible to tell my family about a friend who is a patient at the hospital if I'm sure the patient/friend is okay with it.

'False'

A Covered Entity can never deny a patient access to their protected health information.

'False'.

Right axis deviation is between Select one: a. 0 and +90 degrees. b. 0 and -90 degrees. c. +90 and ±180 degrees. d. -90 and ±180 degrees

+90 and ±180 degrees..

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.

-90 and ±180 degrees

Junctional tachycardia has a heart rate of Select one: a. 40-60. b. 60-100. c. Less than 40. d. Greater than 100.

. Greater than 100.

Which statement is true regarding P waves in atrial flutter? Select one: a. There are no P waves—they're called flutter waves. b. The P waves are all tall and pointy. c. P waves change shape constantly. d. P waves have an atrial rate of about 100.

. There are no P waves—they're called flutter waves.

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

0 and +90 degrees..

Left axis deviation is between Select one: a. 0 and +90 degrees. b. 0 and -90 degrees. c. +90 and ±180 degrees. d. -90 and ±180 degrees.

0 and -90 degrees..

The target heart rate for a 60-year-old man having a stress test is

160..

The ventricle's inherent rate is

20-40 beats per minute..

Idioventricular rhythm has a heart rate of Select one: a. 60-100. b. Greater than 100. c. Less than 20. d. 20-40.

20-40.

Normal paper speed for printing out the EKG is

25 mm/sec..

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.

2:1 AV block..

How much must a coronary artery be narrowed for the stress test to be positive?

75%.

Under HIPAA, a Covered Entity must provide which document to patients at their first service delivery date:

A Notice of Privacy Practices.

Atrial fibrillation can cause a drop in cardiac output because it causes Select one: a. A loss of the atrial kick. b. The ventricles to contract more forcefully. c. The AV valves to remain open too long. d. The sinus node to fire more often.

A loss of the atrial kick.

Multifocal couplets are Select one: a. Long runs of ventricular tachycardia. b. A pair of PVCs that look the same. c. A pair of PVCs that look different. d. Reason to start CPR

A pair of PVCs that look different.

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.

A varying PR interval..

Which of the following are patient privacy rights under HIPAA?

A.Right to Request Restrictions b. Right to Request Amendment c. Right to Complain

A junctional escape beat is a beat from the Select one: a. Ventricle. b. AV junction. c. Bundle branches. d. Sinus node.

AV junction.

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.

AV node..

In which of the following leads should the QRS complex be negative?

AVR.

Atrial tachycardia is characterized by Select one: a. Abnormal P waves preceding the regular QRS complexes. b. Sawtooth waves between the QRS complexes. c. Undulating, fibrillatory baseline between the irregular QRS complexes. d. A heart rate of 250-350.

Abnormal P waves preceding the regular QRS complexes..

Dysrhythmias are Select one: a. Normal heart rhythms. b. Abnormal heart rhythms. c. Rhythms originating in the sinus node. d. Rhythms that cause no symptoms. Feedback

Abnormal heart rhythms..

A rhythm originating in the sinus node should NOT have which of the following? Select one: a. Narrow QRS complexes of uniform shape b. Regularly spaced QRS complexes c. Absent QRS complexes d. Heart rate of 60-100

Absent QRS complexes.

Which junctional rhythm has the same heart rate as sinus rhythm? Select one: a. Junctional bradycardia b. Junctional rhythm c. Accelerated junctional rhythm d. Junctional tachycardia

Accelerated junctional rhythm

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.

Activate the event marker button and document the symptoms in his or her diary..

Dying heart is another name for Select one: a. Idioventricular rhythm. b. Accelerated idioventricular rhythm. c. Agonal rhythm. d. Asystole.

Agonal rhythm.

Sinus tachycardia's causes can include which of the following? Select one: a. Fever b. Anxiety c. Congestive heart failure d. All of the above

All of the above

Ventricular fibrillation can be caused by Select one: a. Heart attack. b. Drowning. c. Drug overdoses. d. All of the above.

All of the above..

Treatment of atrial fibrillation could include such medications as Select one: a. Digitalis. b. Calcium channel blockers. c. Amiodarone. d. All the above.

All the above.

An AICD is Select one: a. A defibrillator meant for use by the lay public. b. An implanted defibrillator. c. A cardiac monitor and defibrillator meant for use by health care professionals. d. The same as a monitor-defibrillator

An implanted defibrillator..

The second heart sound (S2) is associated with closure of which heart valves?

Aortic and pulmonic.

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

Artifact..

If the patient's rhythm changes, you should FIRST Select one: a. Assess your patient for signs of decreased cardiac output. b. Calculate the heart rate, rhythm, and intervals. c. Change the lead to see if the rhythm is real or if it's artifact. d. Look for P waves.

Assess your patient for signs of decreased cardiac output..

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.

Asthma or chronic lung disease

For which of the following rhythms is electrical shock to the heart NOT appropriate? Select one: a. Ventricular tachycardia b. Ventricular fibrillation c. Torsades de pointes d. Asystole

Asystole

What electrical event must occur for atrial kick to occur?

Atrial depolarization.

The P wave represents

Atrial depolarization..

Junctional rhythms originate in the Select one: a. Sinoatrial junction. b. Atrioventricular junction. c. Sinoventricular junction. d. Sinus node junction.

Atrioventricular junction.

Treatment for torsades de pointes can include all the following EXCEPT Select one: a. Overdrive pacing. b. Magnesium. c. Electrical shock to the heart. d. Atropine.

Atropine.

Which of the following medications blocks vagus nerve effects on the heart? Select one: a. Digitalis b. Epinephrine c. Atropine d. Verapamil

Atropine.

To minimize artifact, what must be done?

Attach electrode patches securely Tell the patient not to move during the EKG

The top of the heart where the great vessels emerge is the

Base..

The normal rhythm originating in the sinus node should have a heart rate Select one: a. Greater than 100. b. Less than 60. c. Between 40 and 60. d. Between 60 and 100.

Between 60 and 100..

SVT and junctional tachycardia are similar in that Select one: a. Both have inverted P waves. b. Both can have hidden P waves. c. Both have heart rates less than 40. d. Both require electrical shock to the heart.

Both can have hidden P waves.

A heart rate less than 60 is said to be a Select one: a. Tachycardia. b. Bradycardia. c. Tachyarrhythmia. d. Bundle branch block.

Bradycardia..

Certain glaucoma medications can causeSelect one: a. Bradycardias. b. An increase in heart rate. c. ST segment elevation. d. Hemiblocks.

Bradycardias..

Sinus arrhythmia has a pattern that often corresponds with the Select one: a. PR intervals. b. Breathing pattern. c. P-P intervals. d. Patient's age.

Breathing pattern.

In third-degree AV block, the site of the block is either the Select one: a. Sinus node or the internodal tracts. b. AV node or the Purkinje fibers. c. Bundle branches or the AV node. d. Sinus node or the AV node.

Bundle branches or the AV node..

Which of the following is NOT TRUE?

Cardiac cells can contract without having been depolarized.

Which of the following is TRUE? Select one: a. Defibrillation tends to involve a smaller shock than cardioversion. b. Cardioversion involves synchronizing the shock with the cardiac cycle. c. Defibrillation is the preferred method of converting atrial tachycardia back to sinus rhythm. d. Defibrillation is the treatment of choice for atrial fibrillation

Cardioversion involves synchronizing the shock with the cardiac cycle..

Ventricular fibrillation has what effect on the cardiac output? Select one: a. No effect b. Causes an increase c. Causes a decrease d. Causes cardiac output to stop completely

Causes cardiac output to stop completely

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.

Chamber sensed..

The precordial leads are located on the

Chest..

Right ventricular hypertrophy is most commonly caused by Select one: a. Atrial fibrillation. b. Heart attack. c. Hypertension. d. Chronic lung disease.

Chronic lung disease..

In a lateral wall MI, which coronary artery is occluded? Select one: a. Right b. Left anterior descending c. Circumflex d. Aorta

Circumflex.

What causes heart sounds?

Closing of the heart valves.

If your patient develops a first-degree AV block during her stress test, you should

Continue, but watch the rhythm cautiously..

Contractility is the ability of a cardiac cell to

Contract..

The most accurate way to determine heart rate would be to Select one: a. Count the number of P waves in a minute-long rhythm strip. b. Count the number of QRS complexes in a minute-long rhythm strip. c. Count the number of QRS complexes on a six-second strip and multiply by 10. d. Count the number of P waves on a six-second strip and multiply by 10.

Count the number of QRS complexes in a minute-long rhythm strip..

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.

Counterclockwise rotation..

The mean rate is calculated by

Counting the number of QRS complexes on a six-second strip and multiplying by 10..

Pericardial fluid

Decreases friction of the pericardial layers as they rub against each other..

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

Defibrillation..

In the action potential, phase 0 is

Depolarization..

The coronary circulation supplies oxygenated blood to the myocardium during

Diastole..

Junctional tachycardia is associated with which medication toxicity? Select one: a. Quinidine b. Digitalis c. Atropine d. Oxygen

Digitalis

Joining leads I, II, and III at their ends produce

Einthoven's triangle..

Small adhesive patches with conductive gel on the skin side are

Electrodes..

The innermost layer of the heart is the

Endocardium..

The Privacy Rule required which of the following:

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

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.

Excessive growth of ventricular myocardial tissue..

It is "OK" to access or view the medical records of my family, friends, or co-workers if I know they won't mind.

FALSE

Your patient took his routine beta-blocker medication this morning just before his stress test. What effect would this likely have on the results?

False negative.

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.

Fires at its preset rate regardless of intrinsic beats..

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.`

First-degree AV block and Mobitz II second-degree AV block..

The type of AV block characterized by a prolonged PR interval is Select one: a. Wenckebach. b. Mobitz II second-degree AV block. c. Third-degree AV block. d. First-degree AV block.

First-degree AV block..

The V1 electrode is located at the

Fourth intercostal space, right sternal border..

Treatment for sinus tachycardia associated with a high fever would be to Select one: a. Give atropine. b. Start CPR. c. Give acetaminophen or ibuprofen to get the temperature down. d. Give beta-blockers.

Give acetaminophen or ibuprofen to get the temperature down.

Wenckebach is characterized by Select one: a. Gradually prolonging PR intervals. b. Constant PR intervals. c. Absent P waves. d. Wide bizarre QRS complexes

Gradually prolonging PR intervals..

Ventricular tachycardia has a heart rate of Select one: a. Greater than 100. b. 60-100. c. 40-60. d. 20-40.

Greater than 100.

Sinus tachycardia's heart rate is Select one: a. 60-100. b. Greater than 100. c. Less than 60. d. Greater than 170.

Greater than 100..

Bipolar leads

Have a positive pole and a negative pole..

Multifocal PVCs are those that Select one: a. Have different shaped P waves preceding them. b. Have different shaped QRS complexes. c. Come from the same focus. d. Resemble each other

Have different shaped QRS complexes.

Atrial flutter is almost always seen in patients with Select one: a. Thyrotoxicosis. b. Acute heart attacks. c. Heart disease. d. Cardiac arrest.

Heart disease.

Frequent PACs can be a sign of impending Select one: a. Heart failure. b. Sinus arrest. c. Respiratory failure. d. Cardiac arrest.

Heart failure.

The EKG is a recording of the

Heart's electrical activity..

In mid-junctional rhythms, the P wave is Select one: a. Upright, rounded, preceding the QRS. b. Inverted following the QRS. c. Inverted preceding the QRS. d. Hidden inside the QRS.

Hidden inside the QRS.

A disorder in which there is too much potassium in the bloodstream is called Select one: a. Hyperkalemia. b. Hypokalemia. c. Hypercalcemia. d. Hypocalcemia

Hyperkalemia..

Left ventricular hypertrophy is most commonly caused by Select one: a. Atrial fibrillation. b. Heart attack. c. Hypertension. d. Chronic lung disease.

Hypertension..

Which leads look at the lateral wall of the left ventricle? Select one: a. II, III, and AVF b. I, II, and III c. I, AVL, and V5-6 d. V1-2

I, AVL, and V5-6.

The most common cause for the P wave, QRS complex, and T wave to be inverted in lead I is

Incorrect lead placement..

An axis of -120 degrees is Select one: a. Normal axis. b. Left axis deviation. c. Right axis deviation. d. Indeterminate axis

Indeterminate axis..

After the sinus node initiates an impulse, where does the impulse go next?

Interatrial tracts.

Atrial fibrillation is Select one: a. Regular. b. Irregular. c. Regular but interrupted by premature beats. d. Regular but interrupted by pauses.

Irregular.

The type of regularity in which the QRS complexes vary wildly throughout the rhythm strip is Select one: a. Regular. b. Regular but interrupted by premature beats. c. Regular but interrupted by pauses. d. Irregular.

Irregular..

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.

Is almost always indicative of heart disease. Is more serious than RBBB. Is characterized by a QS or RS pattern in V1.

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.

Is an MI that damages the full thickness of the myocardium in a certain area

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

Ischemia, injury, infarction.

Which of the following is true about sinus rhythm? Select one: a. It is regular. b. It has an irregularly irregular pattern of QRS complexes. c. It has multiple shapes of P waves. d. It has wide QRS complexes without preceding P waves.

It is regular.

In which rhythm is decreased cardiac output most likely to be a concern? Select one: a. Sinus rhythm b. Accelerated junctional rhythm c. Junctional bradycardia d. Junctional rhythm

Junctional bradycardia

Which junctional rhythm WOULD NOT be treated with atropine? Select one: a. Junctional bradycardia b. Juctional rhythm c. Accelerated junctional rhythm d. Junctional tachycardia

Junctional tachycardia

A junctional rhythm with a heart rate of 125 is called Select one: a. Junctional bradycardia. b. Junctional rhythm. c. Accelerated junctional rhythm. d. Junctional tachycardia.

Junctional tachycardia.

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

LBBB..

Einthoven's law states that

Lead I + lead III = lead II..

In which lead should the tallest QRS complex be seen?

Lead II.

The bipolar lead formed by joining the right arm and left leg is

Lead II..

AVL has its positive pole on the

Left arm..

Pulmonary veins deliver blood to the

Left atrium

If lead II's QRS complex is positive, the heart's current is traveling toward the

Left leg..

Which heart chamber delivers oxygenated blood to the entire body?

Left ventricle.

Normal QRS complexes should have a QRS complex Select one: a. Less than 0.20 seconds wide. b. Less than 0.12 seconds wide. c. Between 0.12 and 0.20 seconds wide. d. That is alternately narrow and wide.

Less than 0.12 seconds wide..

A MET is a

Measurement of oxygen consumption during exercise..

The rhythm most often associated with chronic lung disease is Select one: a. Atrial fibrillation. b. SVT. c. Sinus arrhythmia. d. Multifocal atrial tachycardia.

Multifocal atrial tachycardia.

ST segment elevation is indicative of Select one: a. Myocardial necrosis. b. Myocardial ischemia. c. Myocardial injury. d. Abnormal atrial depolarization.

Myocardial injury..

If the ST segment drops 3 mm during exercise, it is evidence of

Myocardial ischemia..

The layer of the heart that is damaged during a heart attack is the

Myocardium..

Which kind of MI usually damages only the innermost layer of the myocardium? Select one: a. NSTEMI b. Transmural c. Posterior d. Anteroseptal

NSTEMI.

Subendocardial MI is an old term for Select one: a. Inferior MI. b. NSTEMI. c. STEMI. d. Transmural MI.

NSTEMI..

An impulse that travels away from a positive electrode will write a(n) _____ on the EKG

Negative QRS complex

The cardiac cell at rest has what kind of electrical charge?

Negative charge.

Which of the following interferes with the movement of calcium ions through the cardiac cell membranes Select one: a. Propranolol b. Nifedipine c. Digitalis d. Nitroglycerin

Nifedipine.

Atrial fibrillation has Select one: a. P waves of multiple shapes. b. P waves with uniform shape. c. No P waves at all. d. Sawtooth-shaped waves between the QRS complexes

No P waves at all.

Ventricular fibrillation has Select one: a. No P waves or QRS complexes. b. P waves but no QRS complexes. c. QRS complexes but no T waves. d. P waves and QRS complexes.

No P waves or QRS complexes.

If the QRS in leads I and AVF are both positive, the axis is Select one: a. Normal. b. Right axis deviation. c. Left axis deviation. d. Indeterminate axis

Normal..

Your patient for a 12-lead EKG has no legs as a result of bilateral amputations. Where should you put the leg electrodes?

On the lower abdomen above where the legs would be.

Minimum Necessary means:

Only use and disclose the minimum amount of protected health information necessary to do my job.

The PR segment is located between the

P wave and the QRS complex..

In P wave asystole, there are Select one: a. No P waves or QRS complexes. b. P waves but no QRS complexes. c. No waves of any kind. d. P waves and QRS complexes but no T waves

P waves but no QRS complexes.

For purposes of ischemia evaluation, the baseline of the EKG is at the

PR segment

Treatment for third-degree AV block usually includes Select one: a. Digitalis. b. Lidocaine. c. Amiodarone. d. Pacemaker

Pacemaker..

Somatic tremor artifact is commonly caused by

Patient movement..

A true positive stress test is one in which the stress test is _____ and the angiogram is _____.

Positive, positive

Which kind of MI is best seen by looking at the EKG upside down from behind? Select one: a. Inferior b. Anteroseptal c. Posterior

Posterior.

A PAC often deforms the shape of the Select one: a. QRS. b. Preceding T wave. c. Preceding U wave. d. Following T wave.

Preceding T wave.

V1 through V6 are the

Precordial leads..

A PAC is a Select one: a. Premature beat from the sinus node. b. Late beat from the atria. c. Premature beat from the ventricle. d. Premature beat from the atrium.

Premature beat from the atrium.

PVCs are Select one: a. Premature ventricular complexes. b. Ventricular escape beats. c. Slow ventricular rhythms. d. Post-ventricular compensatory pauses.

Premature ventricular complexes.

The heart's valves open and close in response to changes in

Pressure..

Electrical shock is LEAST likely to be caused by which of the following?

Properly maintained EKG machine.

HIPAA is intended to protect the confidentiality of patient information by:

Providing specific guidance for the appropriate uses and disclosures of protected health information..

Through which structure must the blood travel in order to leave the right ventricle?

Pulmonic valve.

Phase 0 of the action potential corresponds with what wave or complex on the EKG?

QRS complex.

Regularity of a rhythm is determined by measuring the Select one: a. P-P intervals. b. QRS intervals. c. R-R intervals. d. Distance between consecutive U waves.

R-R intervals..

Right bundle branch block (RBBB) is characterized by Select one: a. RSR' configuration in V1. b. Tall, pointy P waves. c. Symptoms of decreased cardiac output. d. More P waves than QRS complexes

RSR' configuration in V1..

In the action potential, phase 3 is

Rapid repolarization..

In AV blocks, the P-P interval is Select one: a. Regular. b. Irregular. c. Absent. d. The same as the R-R interval.

Regular..

Atrial flutter is characterized by Select one: a. P waves of varying shapes and regularly spaced QRS complexes. b. Irregularly irregular pattern of QRS complexes. c. Regularly spaced V-shaped waves. d. A run of six or more PACs in a row.

Regularly spaced V-shaped waves.

Treatment for first-degree AV block involves Select one: a. Atropine. b. Digitalis. c. Electrical shock to the heart. d. Removing the cause.

Removing the cause..

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

Right and left arm leads inadvertently reversed

AVF's negative reference point is formed by finding the midway point between which limbs?

Right arm and left arm

Lead I connects which limbs?

Right arm and left arm.

AVR has its positive pole on the

Right arm..

If artifact is present in leads I, II, and AVR, the most likely source of the artifact is on the

Right arm..

An AV universal pacemaker paces which chamber(s) of the heart? Select one: a. Right atrium b. Right ventricle c. Left atrium d. Right atrium and right ventricle

Right atrium and right ventricle.

The AV node is located in the Select one: a. Left atrium. b. Right atrium. c. Right ventricle. d. Left ventricle

Right atrium.

If the QRS in I is negative and the QRS in AVF is positive, the axis is Select one: a. Normal. b. Right axis deviation. c. Left axis deviation. d. Indeterminate axis.

Right axis deviation..

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

Right coronary artery.

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

Right coronary artery.

Ischemia is recognized by

ST depression of 1-1.5 mm at 80 milliseconds after the J-point..

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

ST depression.

Which of the following is a reciprocal change? Select one: a. ST elevation b. T wave inversion c. ST depression d. Significant Q waves

ST depression.

Digitalis effect is characterized bySelect one: a. Shortened PR intervals. b. Widened QRS. c. Sagging ST segments. d. Prolonged ST segments

Sagging ST segments..

Wenckebach is a type of Select one: a. First-degree AV block. b. Second-degree AV block. c. Third-degree AV block. d. Fourth-degree AV block

Second-degree AV block..

The _____ of an old STEMI typically remains on the EKG forever. Select one: a. ST segment elevation b. ST segment depression c. Inverted T waves d. Significant Q wave

Significant Q wave.

Which of the following is indicative of myocardial necrosis? Select one: a. ST elevation b. ST depression c. Significant Q wave d. Inverted T wave

Significant Q wave.

In which rhythm is an escape beat sometimes seen? Select one: a. Sinus rhythm b. Sinus bradycardia c. Sinus arrhythmia d. Sinus arrest

Sinus arrest.

Which of these statements about how sinus arrhythmia differs from wandering atrial pacemaker is true? Select one: a. Sinus arrhythmia has uniform P wave shapes; wandering atrial pacemaker has at least three different shaped P waves. b. Sinus arrhythmia has a regular rhythm; wandering atrial pacemaker is irregular. c. Sinus arrhythmia has a heart rate of less than 100; wandering atrial pacemaker has a rate greater than 100. d. Sinus arrhythmia is lethal; wandering atrial pacemaker is benign.

Sinus arrhythmia has uniform P wave shapes; wandering atrial pacemaker has at least three different shaped P waves..

Which of the following is an irregular rhythm originating in the sinus node? Select one: a. Sinus arrhythmia b. Sinus rhythm c. Sinus tachycardia d. Sinus bradycardia

Sinus arrhythmia.

Which of the following has a heart rate less than 60? Select one: a. Sinus rhythm b. Sinus bradycardia c. Sinus tachycardia d. Atrial tachycardia

Sinus bradycardia

IIn Mobitz II second-degree AV block, where do the P waves originate? Select one: a. Sinus node b. AV node c. Atrium d. Ventricle

Sinus node.

The normal pacemaker of the heart is the

Sinus node..

Which of the following sinus rhythms would be expected with stimulation of the sympathetic nervous system? Select one: a. Sinus rhythm rate 68 b. Sinus bradycardia rate 45 c. Sinus arrhythmia rate 45-73 d. Sinus tachycardia rate 125

Sinus tachycardia rate 125

Thyrotoxicosis is a condition associated with which rhythm? Select one: a. Sinus block b. Sinus arrest c. Sinus tachycardia d. Sinus bradycardia

Sinus tachycardia.

Which of the following is a method of calculating heart rate? Select one: a. Six-second strip method b. The QT interval method c. The P-P interval method d. All of the above

Six-second strip method.

To ensure good contact with the skin, what preparation is used at stress test electrode sites?

Skin is cleaned and degreased with acetone, then abraded to remove the horny layer of epidermis..

Atropine's mode of action is to Select one: a. Speed up the rate of sinus node firing and speed conduction through the AV node. b. Speed impulse conduction through the bundle branches and AV node. c. Slow the rate of conduction through the AV node and slow sinus node firing. d. Speed sinus node firing and slow AV node conduction.

Speed up the rate of sinus node firing and speed conduction through the AV node..

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?

Stop the test immediately..

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.

Supraventricular tachycardia with heart rate of 167..

A regular rhythm with narrow QRS complexes, indistinguishable P waves, and a heart rate of 155 would be consistent with Select one: a. Atrial fibrillation. b. Supraventricular tachycardia. c. Sinus bradycardia. d. Ventricular tachycardia.

Supraventricular tachycardia.

SVT stands for Select one: a. Sinus ventricular tachycardia. b. Supraventricular tension. c. Sinus valvular tachycardia. d. Supraventricular tachycardia.

Supraventricular tachycardia.

A Covered Entity must always verify information before relying on it to use or disclose patient information.

TRUE

A heart rate greater than 100 is said to be a Select one: a. Tachycardia. b. Bradycardia. c. Myocardium. d. Bundle branch block.

Tachycardia..

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

Terminate the test immediately..

Which of the following is NOT a method of calculating heart rate?

The P-P interval method..

An irregular rhythm is one in which Select one: a. The R-R intervals vary "all over the place." b. The R-R intervals vary by only one or two little blocks. c. There are premature beats or pauses that interrupt the otherwise regular rhythm. d. The QRS complexes do not look alike. Feedback

The R-R intervals vary "all over the place.".

The "gain" setting on the EKG machine is concerned with

The amplitude of the waves and complexes..

The inferior vena cava returns deoxygenated blood to the heart from

The lower extremities and abdomen..

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.

The pacemaker battery continues to fire at its programmed rate until the battery runs out..

In sinus block, Select one: a. The pause is a multiple of the R-R intervals. b. There are P waves inside the pause. c. All R-R intervals are constant. d. The heart rate varies from 100 to 160.

The pause is a multiple of the R-R intervals.

Bayes' Theorem has to do with

The sensitivity and specificity of the stress test results..

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

Third-degree AV block.

AV dissociation is a hallmark of Select one: a. First-degree AV block. b. Mobitz I second-degree AV block (Wenckebach). c. Mobitz II second-degree AV block. d. Third-degree AV block.

Third-degree AV block..

The artifact caused by the jiggling of wires during toothbrushing is called

Toothbrush Tachycardia.".

+20 mV is the

Transmembrane potential at the conclusion of phase 0 of the action potential..

Some modern EKG machines are Bluetooth-capable, allowing EMS workers to

Transmit the EKG to the nearest hospital so workers can prepare for the patient's arrival..

Electrically speaking, the heart is a

Transmitter..

Treatment for occasional PJCs is to Select one: a. Give atropine to speed the heart rate up. b. Give digitalis to slow the heart rate down. c. Shock the heart out of the rhythm. d. Treat the cause.

Treat the cause.

Which of the following are both AV valves?

Tricuspid and mitral valves.

Which valves open to allow the ventricles to fill?

Tricuspid and mitral.

If the stress test is negative and the angiogram reveals normal coronary arteries, the stress test is said to have been a

True negative..

Torsades de pointes means Select one: a. Torsion of the points. b. Twisting of the points. c. Tall, pointy T waves. d. Spiked P waves.

Twisting of the points.

Pacemaker spikes inside T waves and QRS complexes are a sign of which malfunction? Select one: a. Failure to fire b. Oversensing c. Undersensing d. Loss of capture

Undersensing.

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.

Undersensing..

Sinus rhythms all have Select one: a. Uniform shape P waves preceding the QRS complexes. b. Multiple shapes of P waves preceding the QRS complexes. c. A wavy baseline without P waves or QRS complexes. d. Inverted P waves in lead II.

Uniform shape P waves preceding the QRS complexes

All sinus rhythms have Select one: a. Upright, matching P waves. b. Wide, bizarre QRS complexes. c. Multiple P waves of varying configurations. d. Heart rates between 40 and 100.

Upright, matching P waves..

The normal rhythm of the heart has P waves that are Select one: a. Upright, matching, and precede the QRS complex. b. Variable in shape and location. c. Often hidden inside QRS complexes. d. Multiple in number, preceding the QRS complex.

Upright, matching, and precede the QRS complex..

The relative refractory period extends from the

Upstroke of the T wave to the end of the T wave..

Permissible uses and disclosures include which of the following

Uses and Disclosures for Treatment, Payment and Health Operations Disclosures Required by Law

Muscle artifact can be minimized by monitoring the patient in lead

V1 or MCL1..

A regular rhythm is one in which the R-R intervals

Vary by only one or two little blocks..

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.

Ventricle, sense nothing, and have no response to sensed events since it cannot sense..

The semilunar valves open when the

Ventricular pressure exceeds the aortic and pulmonary arterial pressures..

2:1 AV block can be either Select one: a. Third-degree AV block or Wenckebach. b. Wenckebach or Mobitz II second-degree AV block. c. First-degree AV block or Wenckebach. d. Mobitz II second-degree AV block or third-degree AV block.

Wenckebach or Mobitz II second-degree AV block..

QRS complexes in ventricular rhythms are Select one: a. Wide and bizarre. b. Always absent. c. Found preceding the P waves. d. Found following the T waves.

Wide and bizarre.

In asystole, the cardiac output is Select one: a. Zero. b. Greater than in ventricular fibrillation. c. Enhanced by electrical shock to the heart. d. Not affected.

Zero.

In low junctional rhythms, the P wave is Select one: a. Upright, rounded, preceding the QRS. b. Inverted following the QRS. c. Inverted preceding the QRS. d. Hidden inside the QRS.

b. Inverted following the QRS.

PJCs are a result of Select one: a. Escape. b. Usurpation. c. Sinus node failure. d. Atrial failure.

b. Usurpation.

In high junctional rhythms, the P wave is Select one: a. Upright, rounded, preceding the QRS. b. Inverted following the QRS. c. Inverted preceding the QRS. d. Hidden inside the QRS.

c. Inverted preceding the QRS.

A premature beat arising from the AV junction is called a Select one: a. PAC. b. Junctional escape beat. c. PJC. d. PVC.

c. PJC.