ECG

Question 1

ECGs third standard lead is recorded between

Answer 1

Left hand and left foot

Question 2

WPW syndrome is characterized by

Answer 2

Additional conduction pathway,QRS prolongation,delta wave ,attacks of paroxysmal tachycardia

Question 3

How to differentiate SV Extra systole from Ventricular

Answer 3

QRS complex analysis

Question 4

What degree of av conduction can be with irregular ventricular rhythm

Answer 4

Second degree

Question 5

Prolonged PQi, scaphoid ST s depression, ventricular extrasystole and bradycardia - reason

Answer 5

Cardiac glycoside overdose

Question 6

Change in ECG indicating myocardial necrosis

Answer 6

Pathological q wave

Question 7

ECG signs of intraventricular conduction disturbance

Answer 7

QRS prolongation

Question 8

2 Nd standard lead is recorded btw

Answer 8

Right hand and left foot

Question 9

QRS duration more than 140 ms indicate

Answer 9

Complete BBB

Question 10

Complete dissociation of QRS complex and p wave observed in

Answer 10

Complete av block

Question 11

ST segment elevation by 1-2 mm in lead V2 indicate

Answer 11

Acute MI,pericarditis,left ventricular overload,normal

Question 12

MI of left ventricular lateral wall signs seen in

Answer 12

V5,V6,1,avL

Question 13

Leads best used to access p wave

Answer 13

,2,avF and v1

Question 14

Highest s amplitude seen in

Answer 14

V1,V2

Question 15

Which ECG leads has an active electrode on left leg

Answer 15

2,3, avf

Question 16

Acute RV overload ECG signs

Answer 16

S1,Q3, negative T3, negative T v1-V2

Question 17

Sinus rhythm is

Answer 17

+ ve p wave in 1 and 2 and negative in avr

Question 18

R wave in QRS complex is

Answer 18

Any positive wave

Question 19

Q wave

Answer 19

First wave of QRS complex if it is negative

Question 20

S wave

Answer 20

Negative wave after any positive wave

Question 21

Highest R wave recorded in

Answer 21

V5

Question 22

Transitional zone ( R=S) is seen in

Answer 22

V3

Question 23

Sinus rhythm exist if

Answer 23

Source of pace is SA node, impulse rate is 60 to 80x/min

Question 24

Sinus tachycardia

Answer 24

P wave normal configuration,rate more than 100

Question 25

Sinus bradycardia

Answer 25

P wave with same configuration and rate less than 50

Question 26

Sinus arrythmia

Answer 26

Same p wave configuration,p- p I difference more than 15%

Question 27

Paroxysmal SVT

Answer 27

Narrow QRS, regular RR I,HR:120 to 200

Question 28

Paroxysmal VT

Answer 28

Wide QRS, regular RR I,HR: 120 to 200

Question 29

Atrial fib ECG criteria

Answer 29

All RRi different,p waves aren't registered, fibrillation waves present

Question 30

Atrial flutter ecg

Answer 30

Regular saw like waves of rate 250- 350,RRi regular/ irregular

Question 31

Sinoatrial block of second degree is characterized by

Answer 31

Periods of pqrs absence

Question 32

1 st degree av block

Answer 32

Stable prolonged PQi,each p followed by QRS complex

Question 33

Complete av block

Answer 33

No electrical communication between QRS complex,QRS complex could be narrow or wide

Question 34

Left posterior hemifascicular block

Answer 34

Dextrogram+120, narrow QRS,other causes of dextrogram excluded

Question 35

In LBBB,q wave in 1,v5 and v6 is

Answer 35

Not present

Question 36

Complete RBBB

Answer 36

Wide QRS, double R wave in v1 or and V2,wide s in 1,v5,v6

Question 37

Manifestation of wpw depends on

Answer 37

Kent bundle

Question 38

ECG wpw

Answer 38

Delta wave,short pq,wide QRS