Homework Clinic
Science Clinic => Health Science => Topic started by: Melani1276 on May 18, 2019
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In Third Degree Heart Block:
◦ some beats are conducted, while others are not.
◦ the bundle branches are blocked.
◦ the SA node and AV node are blocked.
◦ the atria and ventricles are completely dissociated.
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the atria and ventricles are completely dissociated.
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Thank you!
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Always glad to help...
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In First Degree Heart Block, conduction through the AV node is:
◦ conducted only intermittently.
◦ prolonged on every beat.
◦ blocked completely.
◦ normal on every beat.
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prolonged on every beat.
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In First Degree Heart Block, the pacemaker site is usually in the:
◦ AV node.
◦ Bundle of His.
◦ ventricles.
◦ SA node.
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SA node.
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TY
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You're welcome
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In First Degree Heart Block, the PR interval is ________ sec.
◦ 0.12-0.16
◦ less than 0.12
◦ greater than 0.20
◦ 0.16-0.20
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greater than 0.20
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In First Degree Heart Block, the QRS complex should be:
◦ less than 0.12 sec.
◦ greater than 0.20 sec.
◦ 0.12-0.20 sec.
◦ the same as the PRI.
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less than 0.12 sec.
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Welcome :)
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In a Wenckebach, not every P wave is followed by:
◦ another P wave.
◦ a QRS complex.
◦ a compensatory pause.
◦ a PR interval.
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a QRS complex.
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Wenckebach is a ________ Degree Heart Block.
◦ Type II Second
◦ First
◦ Third
◦ Type I Second
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Type I Second
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In Type II Second Degree Heart Block with variable conduction, the R-R interval:
◦ is irregular.
◦ consistently decreases.
◦ methodically increases.
◦ randomly increases.
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is irregular.
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In Complete Heart Block, if a junctional focus is controlling the heart, the rate will be ________ beats per minute.
◦ below 20
◦ 60-100
◦ 40-60
◦ 20-40
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40-60
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If the rate is 20-40 beats per minute and the QRS measures over 0.12 sec, you should suspect that the pacemaker controlling the heart is located in the:
◦ SA Node.
◦ AV junction.
◦ ventricles.
◦ atria.
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ventricles.
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In Complete Heart Block, the PR interval is:
◦ constant but longer than normal.
◦ normal duration and constant.
◦ normal duration but changing.
◦ P waves are not related to QRS complexes.
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P waves are not related to QRS complexes.
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In Second Degree Heart Block (Type I and Type II), there is (are):
◦ more QRS complexes than P waves.
◦ more P waves than QRS complexes.
◦ no relationship between P waves and QRS complexes.
◦ one P wave for every QRS complex.
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more P waves than QRS complexes.
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The type of block in which the P waves have no relationship to the QRS complexes is:
◦ Wenckebach (Type I Second Degree Heart Block).
◦ Third Degree Heart Block.
◦ Type II Second Degree Heart Block.
◦ First Degree Heart Block.
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Third Degree Heart Block.
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All of the rhythms characterized as heart blocks are caused by conduction disturbances at the:
◦ SA node.
◦ AV node.
◦ Purkinje fibers.
◦ atrial pathways.
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AV node.
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In Third Degree Heart Block with a rate of 40-60 bpm, with a QRS of less than 0.12 sec, you should suspect that the pacemaker controlling the heart is located in the:
◦ ventricles.
◦ SA node.
◦ AV junction.
◦ atria.
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AV junction.
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In First Degree Heart Block, what additional feature must you identify?
◦ QT ratio
◦ Bundle branch block
◦ Pulse deficit
◦ Underlying rhythm
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Underlying rhythm
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The most diagnostic feature of Wenckebach is:
◦ the PRI is consistently regular.
◦ there are always 2 P waves for every QRS complex.
◦ both atrial and ventricular rates are regular.
◦ the PRIs get progressively longer until one is dropped.
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the PRIs get progressively longer until one is dropped.
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Which of the following is NOT a feature of Classical Type II Second Degree Heart Block?
◦ The PRI is consistent on conducted beats.
◦ Not all the P waves produce QRS complexes.
◦ The PRI varies, with no obvious pattern.
◦ There are always more P waves than QRS complexes.
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The PRI varies, with no obvious pattern.
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In Third Degree Heart Block, the pacemaker can be in either the:
◦ SA node or atria.
◦ AV junction or ventricles.
◦ SA node or ventricles.
◦ atria or AV junction.
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AV junction or ventricles.
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The most serious of the four AV blocks is:
◦ Third Degree.
◦ Wenckebach (Type I Second Degree).
◦ Type II Second Degree.
◦ First Degree.
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Third Degree.
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The difference between Wenckebach and CHB is that:
◦ CHB has an irregular P-P interval, whereas it's regular in Wenckebach.
◦ CHB has more P waves than QRS complexes, whereas Wenckebach always has one P wave for every QRS complex.
◦ CHB has a regular R-R, whereas Wenckebach is irregular.
◦ CHB has a constant PRI, whereas in Wenckebach it gets progressively longer.
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CHB has a regular R-R, whereas Wenckebach is irregular.
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Thanks
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Welcome :)
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The most important diagnostic feature for any of the AV blocks is the:
◦ QRS complex.
◦ P wave.
◦ PRI.
◦ rate.
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PRI.
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AV dissociation is a feature of:
◦ Third Degree Heart Block.
◦ Type II Second Degree Heart Block.
◦ Wenckebach (Type I Second Degree Heart Block).
◦ First Degree Heart Block.
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Third Degree Heart Block.
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Thanks
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Welcome :)
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A Premature Ventricular Complex is a(n):
◦ atrial malfunction.
◦ escape mechanism.
◦ single irritable beat.
◦ heart block.
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single irritable beat.
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A compensatory pause is a(n):
◦ delay following a PVC.
◦ delay that causes a PVC.
◦ delay within atria.
◦ AV conduction defect.
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delay following a PVC.
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Welcome :)
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Unifocal PVCs:
◦ change conduction from one beat to the next.
◦ look like each other.
◦ look like the underlying rhythm.
◦ arise from multiple irritable sites.
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look like each other.
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Which of the following is NOT true about multifocal PVCs?
◦ They indicate increased irritability.
◦ They arise from multiple foci.
◦ They have a variety of configurations.
◦ They usually look alike.
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They usually look alike.
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Thank you!
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Always glad to help...
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Two PVCs attached together are referred to as:
◦ a double PVC.
◦ repeating PVCs.
◦ a couplet.
◦ bigeminy of PVCs.
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a couplet.
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PVCs falling in a pattern of every other beat are referred to as:
◦ runs of PVCs.
◦ bigeminy.
◦ repeating PVCs.
◦ coupled PVCs.
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bigeminy.
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When PVCs appear in a pattern where every third beat is a PVC, the pattern is called:
◦ tricyclic PVCs.
◦ runs of PVCs.
◦ trigeminy.
◦ triplets.
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trigeminy.
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The heart rate for Ventricular Tachycardia is ________ bpm.
◦ 100-150
◦ 150-250
◦ 60-100
◦ 40-60
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150-250
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The QRS complexes in Ventricular Fibrillation are:
◦ not measurable.
◦ 0.12 sec or greater.
◦ less than 0.12 sec.
◦ wide and uniform.
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not measurable.
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The term "agonal" is used to describe a:
◦ terminal arrhythmia.
◦ painful arrhythmia.
◦ chronic arrhythmia.
◦ rapid rhythm.
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terminal arrhythmia.
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Thanks
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Welcome :)
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The rate for an Idioventricular Rhythm is ________ bpm.
◦ 100-120
◦ 20-40
◦ 40-60
◦ 60-100
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20-40
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The rhythm that is the result of the total absence of cardiac electrical activity is referred to as:
◦ Ventricular Fibrillation.
◦ Idioventricular Rhythm.
◦ Asystole.
◦ Ventricular Tachycardia.
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Asystole.
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Thanks
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Welcome :)
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A basic rule for ventricular arrhythmias is that the QRS is:
◦ inverted.
◦ less than 0.12 sec.
◦ variable.
◦ 0.12 sec or greater.
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0.12 sec or greater.
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Ventricular Tachycardia that has a rate below 150 is identified as:
◦ Ventricular Asystole.
◦ slow Ventricular Tachycardia.
◦ Ventricular Fibrillation.
◦ Ventricular Bradycardia.
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slow Ventricular Tachycardia.
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Thank you!
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Always glad to help...
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The PR interval in Ventricular Tachycardia is:
◦ less than 0.08 sec.
◦ greater than 0.12 sec.
◦ 0.08-0.12 sec.
◦ not measurable.
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not measurable.
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Ventricular Tachycardia is caused by:
◦ an escape pacemaker within the ventricles.
◦ an irritable focus within the ventricles.
◦ an irritable pacemaker moving between the AV junction and the ventricles.
◦ blocked conduction within the bundle branches.
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an irritable focus within the ventricles.
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Excellent
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Great! Please up vote :D
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Which of the following is NOT true about Ventricular Tachycardia?
◦ It has a constant PRI.
◦ It often looks like a string of connected PVCs.
◦ It is usually regular.
◦ It sometimes has P waves.
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It has a constant PRI.
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When an ectopic beat falls during the vulnerable phase of the cardiac cycle, it is called:
◦ phased ectopic.
◦ vulnerability.
◦ R on T phenomenon.
◦ escape mechanism.
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R on T phenomenon.
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Welcome :)
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Which of the following types of PVCs is NOT considered a particular warning of increased myocardial irritability?
◦ Interpolation
◦ Bigeminy, trigeminy, or quadrigeminy
◦ R on T phenomenon
◦ Couplets and runs
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Interpolation
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Idioventricular Rhythm can be described as all of the following EXCEPT:
◦ a lethal rhythm.
◦ an escape rhythm.
◦ an irritable rhythm.
◦ an agonal rhythm.
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an irritable rhythm.
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Thank you!
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Always glad to help...
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Which of the following is NOT caused by irritability?
◦ Idioventricular Rhythm
◦ Ventricular Fibrillation
◦ Premature Ventricular Complex
◦ Ventricular Tachycardia
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Idioventricular Rhythm
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Which of the following is a feature of Asystole?
◦ Wide, bizarre QRS complexes
◦ Rate 20-40 bpm
◦ Flutter waves on the baseline
◦ No measurable waves or complexes
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No measurable waves or complexes
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Thanks
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Welcome :)
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Which of the following is NOT a lethal arrhythmia?
◦ Ventricular Fibrillation
◦ Premature Ventricular Complexes
◦ Idioventricular Rhythm
◦ Ventricular Tachycardia
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Premature Ventricular Complexes
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Which of the following is NOT a feature of a typical Premature Ventricular Complex?
◦ Preceded by upright P wave
◦ T wave in opposite direction from R wave
◦ QRS measuring 0.12 sec or greater
◦ Followed by compensatory pause
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Preceded by upright P wave
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Which of the following is NOT a sign of myocardial irritability?
◦ Short bursts of Ventricular Tachycardia
◦ Multifocal PVCs
◦ Frequent or increasing PVCs
◦ Asystole
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Asystole
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Which of the following is the premier diagnostic feature of Ventricular Fibrillation?
◦ No measurable waves or complexes
◦ More P waves than QRS complexes
◦ P waves unrelated to QRS complexes
◦ Rate greater than 350 bpm
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No measurable waves or complexes
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Thank you!
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Always glad to help...
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◦ Rate greater than 350 bpm
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No measurable waves or complexes