CARDIOVASCULAR SYSTEM MCQ – Exercise 26

The multiple choice questions in this online test paper focuses on CARDIOVASCULAR SYSTEM MCQ. If you are looking for self evaluation of your PG Medical entrance exam preparation then this online CARDIOVASCULAR SYSTEM MCQ Test Paper will help you to evaluate your exam preparation.

Instruction for REPRODUCTIVE BIOLOGY/ REPRODUCTIVE MEDICINE / INFERTILITY MCQs:

1- This online MCQ practice test paper contains 30 questions.
2- Each question in this online practice test paper have four options and only 1 option is correct.
3- You can view the answers of this practice test paper after submitting the practice test paper.
Note: The answers mentioned at the end of practice test are the best suitable option as per our knowledge. Users shall cross-check the answers with their textbooks.

Q 1. which of the following statements about APCs is false

most common arrhythmia

frequently increases with age and structural heart disease

asymptomatic

none of the above

Q 2. which of the following statements about mechanism of tachyarrhythmias is false

reentrant arrhythmias can be reproducibly initiated and terminated by premature complexes and rapid stimulation

myocardial cells do not possess pacemaker activity

tachycardia caused by automaticity cannot be started or stopped by pacing

triggered activity is caused by early after depolarization only

Q 3. which of the following about APC s is false

APCs characteristically reset the sinus node

sum of pre and post- APC RR is <2 sinus PP intervals

class I C antiarrhythmic agents may eliminate APCs

none of the above

Q 4. electrical cardioversion for AVNRT is accomplished through delivery of

20- 40 J

50-100 J

100-200 J

200-300J

Q 5. it is difficult to convert AF to sinus rhythm and /or to maintain it despite therapy when the left atrial diameter exceeds

2.5 cm

3.5 cm

4.5 cm

5.5 cm

Q 6. which of the following statements about mechanism of sustained paroxysmal tachyarrhythmias is false

electrophysiological inhomogeneity

unidirectional block in one pathway

fast conduction over an alternative pathway

reexcitaion of the initially blocked pathway

Q 7. paroxysmal AF is triggered by automatic foci located in

left atrium

right atriun

pulmonary veins

all of the above

Q 8. in AF following cardioversion anticoagulation shoulde be maintained for

1 week

2 weeks

3weeks

4weeks

Q 9. which of the following is most common sustained arrhythmia

atrial flutter

AVNRT

none of the above

Q 10. which of the following relates best to AF initiation and maintenance

atrial scarring

atrialized musculature that enters pulmonary veins

accessory atrioventricular tracts

all of the above

Q 11. which of the following about junctional premature complexes is false

extremely uncommon

originates from AV node and His bundle region

produce retrograde atrial activation

none of the above

Q 12. which of the following about inappropriate sinus tachycardia is false

heart rate increases spontaneously

heart rate increases out of proportion to stress / exercise

part of postviral dysautonomia

anxiolytics are the treatment of choice

Q 13. in AF conversion to sinus rhythm by cardiversion should be done after proper anticoagulation for

1 week

2 weeks

3weeks

4weeks

Q 14. If heparin treatment is begun if the duration of AF is

> 3 hours

> 6 hours

> 9 hours

> 12 hours

Q 15. which of the following is not true for physiologic sinus tachycardia

present when heart rate exceeds 100 beats / min

heart rate rarely exceeds 200 beats / min

has a gradual onset and offset

carotid sinus pressure produces slowing with sudden return to previous rate upon cessation

Q 16. which of the following is genetically determined ion channel abnormality

Burgada syndrome

LQTS

catecholaminergic polymorphic VT

all of the above

Q 17. Lone AF often usually represents the tachycardia phase of

thyrotoxicosis

tachycardia – bradycardia syndrome

acute alcoholic intoxication

all of the above

Q 18. APCs from which of the following may mimics the sinus P wave morphology

right atrial appendage

SVC

superior aspect of crista terminalis

all of the above

Q 19. electrical cardioversion for AF is accomplished through delivery of

at least 40 J

at least 200J

at least 300J

at least 400J

Q 20. the Cox-MAZE procedure is a surgical approach to cure

PSVT

all of the above

Q 21. what energy shoul be used for initial attempts at terminating VF

at least 100 W

at least 200 W

at least 300 W

at least 400 W

Q 22. crista terminalis is located in

right atrium

left atrium

right ventricle

left ventricle

Q 23. electrical cardioversion for Atrial Flutter is accomplished through delivery of

20- 40 J

50-100 J

100-150 J

150-300J

Q 24. which of the following statements about atrial premature complex ( APC) is false

sum of pre and post extrasystolic PP intervals is less than the sum of two sinus PP interval

QRS complex following most APCs is normal

alcohol tobacco or adrenergic stimulants precipitate APCs

none of the above

Q 25. which drug is preferred in AF to maintain sinus rhythm in patients without evidence of structural heart disease

sotalol

flecainide

amiodarone

dofetilide

Q 26. in AF pretreatment with which of the following drugs facilitates cardioversion

ibutilide

beta blocker

calcium antagonist

digitalis

Q 27. which of the following is a precipitating factor for acute AF

pulmonary emboli

CHF

pericarditis

all of the above

Q 28. in AF ventricular rate is usually

120 and 160 bpm

150 and 180 bpm

200 and 260 bpm

250 and 280 bpm

Q 29. ventricular rate control for acute AF is best established with

adenosine

beta blockers

amiodarone

digoxin

Q 30. in AF if a patient clinical status is severely compromised which of the following is the treatment of choice

β adrenergic blocker

calcium channel blocker

digitalis

electrical cardioversion

CARDIOVASCULAR SYSTEM MCQ – Exercise 26

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CARDIOVASCULAR SYSTEM MCQ – Exercise 26

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