ECG quiz-1 with answers
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ecg quiz with explanation
MP CHO Paper Quiz link-https://www.nursingofficer.net/2021/02/mp-cho-paper-2020.htmlESIC 2016 1st shift Paper Quiz link-https://www.nursingofficer.net/2021/02/esic-staff-nurse-paper-shift-i2016.html
ESIC 2019 1st shift Paper Quiz link-https://www.nursingofficer.net/2021/02/esic-staff-nurse-question-paper-2019.html
Fundamental of nursing quiz -1 link-https://www.nursingofficer.net/2021/03/fundamental-of-nursing-quiz.html
Q1. Which one of the following is included under lethal arrhythmia? (PSC)
SVT
VF
PVC
AF
answer-4
VF is a condition in which there is unco-ordinated contraction of the cardiac muscle of the ventricles.
It is a cause of cardiac arrest and sudden cardiac death.
The most common cause of VF is heart attack.
It is included under lethal arrhythmia.
Q2. In an ECG, if ST elevation is observed in leads II, III and AVF, the possible diagnosis is (SCTIMST)
AWMI (Anterior Wall MI)
LWMI ( Lateral Wall MI)
IWMI (Inferior Wall MI)
None of these
answer-3
As per the diagram observe for ST elevation in
V1, V2, V3, V4, in AWMI (Anterior Wall MI)
I, AVL, V5, V. in LWMI ( Lateral Wall MI)
II, III, aVF in IWMI (Inferior Wall MI)
AVR, V, in Right sided MI
Q3. Total number of unipolar leads in a 12 lead ECG (PSC)
3
9
6
zero
answer-2
12 leads usually comprise a diagnostic ECG recording. Six limb leads (3 bi-polar and 3 unipolar) and six unipolar precordial leads.
Q4. The lead 1 records the voltage between electrodes placed on
(SCTIMST)
left arm ( + ) & right arm (-)
left leg ( +) & right arm (-)
left arm (-) & right arm ( +)
left arm (-) & left leg (+)
answer-1
I lead : → left arm (+) - right arm (-)
II lead : → left leg (+) - right arm (-)
III lead : → left arm (-) - left leg (+)
Q5. QRS complex in an ECG represents
(PSC)
Atrial depolarization
Ventricular depolarization
Atrial repolarization
Ventricular repolarization
answer-2
Polarization
P wave →Atrial depolarization (Atrial contraction)
QRS complex → Ventricular depolarization (Ventricular contraction)
T wave → Ventricular Repolarization (Ventricular relaxation and passive filling)
Q6. Normal duration of PR interval is het (PSC)
<0.12 sec
0.08 to 0.10 sec
<0.20 sec
0.36 to 0.40 sec
answer-3
Duration P wave → <0.12 sec
Duration PR interval → <0.20 sec
Duration QRS interval → 0.08 to 0.10 sec
Duration QT interval → 0.36 to 0.40 sec
Q7. Timing of one small square in an ECG is
(ESIC)
0.2 sec
0.04 sec
0.4 sec
1 sec
answer-2
Timings
1 small square → 0.04 sec
1 large square → 0.2 sec
25 small squares → 1 sec
5 large squares → 1 sec
Q8. Downward PQRST is normal in (PSC)
Lead 3
Lead aVR
Lead aVF
Lead V5
answer-2
Simplified normal position of leads on ECG graph
Lead I → Upward PQRST
Lead II → Upward PQRST
Lead III → Upward PQRST
Lead aVR → Downward PQRST
Lead aVL → Upward PQRST
Lead aVF → Upward PQRST
Chest lead V1 → Downward PQRST
R wave slowly increase in height from V1 to V6
Q9. -------------- can be terminated by carotid massage
VT
VF
PVC
SVT
answer-4
SVT is a condition presenting as a rapid heart rhythm originating at or above the AV node.
Narrow ORS complex
Rate is usually between 150 and 250 beats per minute
The rhythm is always regular
Possible symptoms : Palpitations, angina, anxiety, polyuria, syncope
Prolonged runs of SVT may result in atrial fibrillation or atrial flutter.
May be terminated by carotid massage.
Q10. Progressive prolongation of PR interval is seen in (PROMETRIC)
1st degree AV block
2nd degree Mobitz type 1
2nd degree Mobitz type 2
3rd degree AV block
answer-2
Classification AV heart blocks
1st degree block → Uniformly prolonged PR interval
2nd degree, Mobitz Type I → Progressive PR interval prolongation
2nd degree, Mobitz Type II → Sudden conduction failure
3 degree block → No AV conduction
Q11. Prolonged QT interval is observed in (PROMETRIC)
Hypercalcemia
Hypokalemia
Hypocalcemia
Hyperkalemia
answer-3
Q12. Appearance of 'U' wave in an ECG indicates (JIPMER)
Hypercalcemia
Hypokalemia
Hyperkalemia
Hypocalcemia
Answer -2
Q13. Peaked T wave is seen in (PSC)
Hypokalemia
Hyperkalemia
Ml
Ischemia
answer- 2
Q14. Which one of the following is a unipolar limb lead (PSC)
V1
L1
aVR
V3
answer-3
unipolar limb leads are aVR, aVL & VF
Q15. Which one of the following is a frontal lead (PSC)
V1
V6
aVF
none of these
answer-3
The leads can be categorized into frontal leads (I, II, III, aVR, aVL & aVF) and transverse leads (V1, to V6.)
16. Peaked P wave is seen in (AIIMS)
Left atrial enlargement
Junctional rhythm
Right atrial enlargement
Atrial fibrillation
answer- 3
1. Inverted P wave / may be absent → Junctional rhythm
2. Wide P wave (P mitrale) → Left Atrial Enlargement
3. Peaked P wave (P Pulmonale) → Right Atrial Enlargement
4. Absent normaly P wave → Atrial fibrillation
5. Saw tooth appearance→ Atrial flutter
Q17. Long PR interval is indicative of (MOH)
Wolff Parkinson White Syndrome
1st degree Heart block
Posterior wall Mi
Bundle branch block
answer-3
Short PR interval - Wolff Parkinson White Syndrome
Long PR interval
First degree heart block PR interval more than 5 small squares or 0.2 sec.
hyperkalemia, hypermagnesemia can cause prolonged PR INTERVAL
Q18. Saw tooth appearance of P wave is seen in (ESI)
Atrial fibrillation
Atrial flutter
Junctional rhythm
Left atrial enlargement
answer-2
Q19. Pathological 'Q' wave is observed in
First degree heart block
Wenckebach phenomenon
MI
PVC
answer-3
Q20. Normally cardiac axis lies between
+ 30° and 90°
+ 60° and 90°
- 30° and 90°
- 60° and 90°
answer-3
21. Normal R - R interval isos V i ento (PSC)
0.6 - 1.2 sec al
0.36 -0.40 sec
0.08 - 0.10 sec
1.2 - 1.8 sec
Answer-1
Q22. Electrocardiogram is
recording of the heart activity
recording of the peristalsis
recording of the brain wave activity
all the above
answer-1
ECG NOTES-https://www.nursingofficer.net/2020/08/ecg.html
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