ECG

Question 1

Low Potassium

Answer 1

U wave

Question 2

High Potassium

Answer 2

Peaked T wave (may look like second QRS)

Question 3

QRS complex represents

Answer 3

Depolarization (contraction) of ventricles

Question 4

P wave represents

Answer 4

Depolarization (contraction) of atria

Question 5

T wave represents

Answer 5

re-polarization of the ventricles

Question 6

Junctional Rhythm

Answer 6

No P wave, problem with SA node

Question 7

Wide QRS

Answer 7

Ventricle-initiated impulse

Question 8

Atrial Rhythm

Answer 8

SA node fails to generate impulse

Not considered lethal

Question 9

A-Flutter

Answer 9

ECG: Irregular, sawtooth appearance

Question 10

A-Fib

Answer 10

ECG: Few measurable atrial (P) waves

Question 11

Supraventricular Tachycardia

Answer 11

ECG: Can look like V-Tach, but NOT coming from ventricles
Unsure of origin
Before ventricular contraction

Question 12

Ventricular Rhythm

Answer 12

Can be Fatal
SA or AV fail to initiate
Ventricles start to pace heart

Question 13

Pre-mature Ventricular Contraction

Answer 13

Ventricles contract to soon

Question 14

V-Fib

Answer 14

ECG: Looks messy

Ventricles move to fast, no blood leaving heart

Question 15

V-Tach

Answer 15

ECG: Symmetrical, rounded mounds

Low perfusion, no correct contractions

Question 16

Torsades de Pointes

Answer 16

ECG: Accordion appearance
Associated with low mag. levels (give magnesium sulfate)
Most common in laboring mothers

Question 17

Asystole

Answer 17

Flatline