ECG

Question 1

Respiratory sinus arrhythmia

Answer 1

Normal

Increased in inspiration

Decreased in expiration

Question 2

Bradycardia is under 50 bpm

Causes

Answer 2

Vagal hyperactivity
Pain
Vomiting
B blockers

Question 3

WPW

Answer 3

shortened PR
widened QRS
Delta wave

Can lead to SVT and VFib
Give adenosine for SVT

Question 4

Adenosine toxicity

Answer 4

Chest pain
Hypotension
Flushing
Discomfort

Question 5

MAT multi focal atrial tachycardia

Answer 5

V distinct P waves

COPD/ hypoxemia

Question 6

Sudden onset palpitations and increased HR = AFib

Answer 6

No p waves

Give warfarin
Rate and rhythm control

Question 7

Prolonged PR interval

Normal under0.2 s

Answer 7

First degree heart block

Increased vagal activity in healthy
Elderly with SA dysfunction
SE of digitalis

Question 8

Progressive lengthening of PR interval until QRS dropped

Answer 8

Mobitz 1
Wenckeback

Don’t need tx

Question 9

Dropped QRS

no PR lengthening

Answer 9

Mobitz 2

Get pacemaker

Question 10

P waves and QRS waves all mixed up!

Answer 10

3rd degree AV block

Get pacemaker

SE of Lyme disease

Question 11

Wide QRS complex

Answer 11

Ventricular tachycardia

Question 12

Torsades de pointes can become VFib

Triggered by Long QT

Answer 12

Congenital - JLN w/ sensorineural deafness

Drugs - class 1a, 3 procainamide

Question 13

S1
QIII
TIII inverted

Answer 13

PE

Question 14

ST depression tx

Answer 14

Sublingual nitroglycerin

Question 15

Acute anterolateral MI

Answer 15

ST elevation in
Ant (V1-V3)
Lat (V4-V5)

Question 16

Inferior wall transmural MI

RCA

Answer 16

ST elevation in inferior (II,III,aVF)