Special Notes On ECG

Question 1

What type of AV block

> PROLONGED PR interval
Does NOT require treatment

Answer 1

1st degree AV Block

Question 2

What type of AV block

> (+) Atrioventricular dissociation
Associated with fainting, syncope, worsening exercise intolerance

Answer 2

3rd degree (COMPLETE) AV block

Question 3

Give 3 systemic diseases that can cause 3rd degree AV block

Answer 3

Amyloidosis
Sarcoidosis
SLE

Question 4

Type of AV block with DROPPED QRS Complex

Answer 4

2nd degree AV block

Question 5

Type of 2nd degree AV block

+) WENCKEBACK phenomenon (gradual INCREASE of PR interval before a block occurs

Answer 5

Mobitz Type I

Question 6

Type of 2nd degree AV block

(-) Wenckeback phenomenon
CONSTANT PR intervals before a block occurs

Answer 6

Mobitz Type II

Question 7

~ FLAT/INVERTED T waves
~ PROMINENT U waves
~ INC amplitude and width of P waves

Answer 7

HYPOkalemia

Question 8

~ ST depression

~ QT prolongation

Answer 8

HYPOkalemia

Question 9

~ LOW P waves

~ TALL T waves

Answer 9

HYPERkalemia

Question 10

~ SHORTENED QT interval

Answer 10

HYPERcalcemia

Question 11

~ PROLONGED QT Interval with LONG QT syndrome
~ can cause sudden fainting and sudden death
~ Torsades de pointes (ventricular arrhythmias/fibrillation)

Answer 11

HYPOcalcemia

Question 12

Drug that can cause Torsades de Pointes

Answer 12

Macrolides (Erythromycin, Azithromycin)

Question 13

ST segment ELEVATION

Answer 13

Q-wave Infarct or Transmural infarct

Question 14

ST segment DEPRESSION

Answer 14

Non-Q-wave infarct or Subendocardial infarct