ECGs

Question 1

Answer 1

Premature Atrial Contracts (PACs)

=weird looking P waves=

Question 2

Answer 2

Sinus Tachycardia

Question 3

Answer 3

A-flutter;

flutter waves that look like a saw-tooth

Question 4

Answer 4

Multi-atrial tachycardia (MAT);

2 criteria: 3 or more morpholigically different P waves + tachycardia

Question 5

Answer 5

A-fib

No discernable P waves; irregularly irregular

Question 6

Answer 6

Supraventricular Tachycardia (SVT)

• Narrow QRS complexes
• No P waves
• HR is fast

Question 7

Answer 7

Sinus rhythm with premature ventricular contractions (PVCs);

• P waves are NL and come before QRS, until QRS complexes occur prematurely and become wide
• ST segment goes in opp direction of QRS complex (characteristic of PVC)

Question 8

Answer 8

V-tach

Question 9

Answer 9

Vfib

Unresponssive, cannot feel pulses,

digguse,chaotic and irregular morphology

Question 10

Answer 10

2nd degree AV block (Wenckebach)

longer, longer, longer, DROP (Wenkebach)

Question 11

Answer 11

1st degree AV block (long P-R intervals; longer than .2 seconds)

Question 12

Answer 12

3rd degree AV block;

atria and ventricles are beating indepdently;

Question 13

Answer 13

RBBB;

Wide QRS; “M” shaped

Question 14

What change are characteristic of hypokalemia?

Answer 14

- flat T wave

- U wave

Question 15

Answer 15

Hypokalemia

Question 16

Answer 16

hyperkalemia

Question 17

changes with hyperkalemia

Answer 17

- tall, peaked T wave

- wide QRS

- flat P

Question 18

What does a 2nd degree AV block (Mobitz 2) look like?

Answer 18

Prolonged PR >200 (WITHOUT GETTING PROGRESSIVELY LONGER) => QRS drop.

Question 19

What is a 3rd degree AV block?

Answer 19

Atria and ventricles are contracting INDEPENDTLY; both work and squeeze.

Finding:

• Constant P-P intervals
• Constant Q-Q intervals

however, bc they are independent of one another, the P waves can be burried in QRS complex