CVS 1- ECG

Question 1

What is the findings of the following ECG?

Answer 1

Non-sinus Tachycardia

Question 2

Answer 2

Sinus Bradycardia

Question 3

Answer 3

Delta wave - from Wolfen Parkinson White syndrome

Question 4

Answer 4

105 bpm

Question 5

Which of the following is NOT a cause of a wide QRS complex?

A Bundle branch block
B AV block
C pacemaker rhythm
D Ventricular Tachycardia

Answer 5

B

Question 6

Answer 6

MI

Question 7

Answer 7

Sinus Tachycardia

Question 8

Which arrhythmia is associated w/ sawtooth waves?

Answer 8

Atrial flutter

Question 9

What is almost always present in conjugation with atrial flutter?

Answer 9

AV block

Question 10

Answer 10

Atrial fibrillation (absence of p wave)

Question 11

ECG findings of non-sinus Tachycardia (aka supra-ventricular Tachycardia)

Answer 11

Rhythm: regular
QRS: normal
P waves : present however, buried in preceding T waves and difficult to see

Question 12

Answer 12

Second degree AV block: type l Morbitz

Question 13

ECG findings of an Atrial flutter, including leads of a -ve/ +ve directed saw-tooth atrial deflections

Answer 13

• Absence of P waves
  -ve deflections: leads ll, lll, aVF
  -ve deflections: leads V1

Question 14

ECG findings of Acute Atrial fibrilation

Answer 14

• Absence of P waves
• irregularly regullar QRS complexes
• No Organized electrical activity in the atria

Question 15

Epi of Wolff-Parkinson-White Synd. + patho

Answer 15

Epi –> men in teenage yrs / early 20s
patho–> accessory pathway (Bundle of Kent), results in depolarization of the ventricles

condition is percipitated by exercise

Question 16

EEG findings of Wolff-Parkinson-White syn.

Answer 16

1) Short PR interval
2) Delta wave
3) Broad QRS

Question 17

ECG findings of 1 AV Block

Answer 17

rythym: regular
PRI is > 0.2 sec
QRS: normal

Question 18

ECG findings of 2 AV Block- Morbitz l

Answer 18

• successively longer PRIs until one QRS fails

Question 19

ECG findings of 2 AV Block- Morbitz ll

Answer 19

• PR intervals do not lengethen
• sudden drop of QRS

Question 20

ECG findings of 3 AV Block

Answer 20

Atria and Ventricles are depolarizing independently

Question 21

Loc of RBBB

Answer 21

Anterior myocardial infarct (occures after pulmonary embolism)

Question 22

Lead changes in RBBB

Answer 22

Leads V1 & V2 –> “slurred S wave”

Question 23

Lead changes in LBBB

Answer 23

Leads V1,V2,V3 –> negative QRS
Leads V5,V6 or lead l –> ‘blunted positive QRS

Question 24

Clinical findings of Bradycardia-tachycardia (“tachy-brady syndrome”)

Answer 24

Alternating slow & fast heart rhythms