EKG

Question 1

EKG HR Rule

Answer 1

300, 150, 100, 75, 60, 50

Question 2

Wandering atrial pacemaker

Answer 2

Changing p waves due to change in atrial depolarization location

Question 3

A Fib

Answer 3

Fluttering p wave, rapid and random
Irregularly irregular

seen in healthy heart or CAD, hypertension, valvular disease

asymptomatic or mild symptoms (lightheadedness, dyspnea, chest pain)

Question 4

Atrial tachycardia = supra ventricular tachycardia

Answer 4

Notice increased HR on EKG

Question 5

Ventricular tachycardia

Answer 5

Sawtooth, regular irregular
Emergency
due to MI or cardiac pathology may lead to vfib

Question 6

Ventricular fibrillation

Answer 6

Irregular irregular
Emergency
requires CPR

Question 7

PVC

Answer 7

Irregular placed and larger QRS complex due to disrupted conduction system (wider QRS)

Bigeminy (every other is pvc)
Trigeminy (every third)

Due to anxiety, stress, caffeine, or heart disease

Question 8

Atrial flutter

Answer 8

Small sawtooth
less severe 250-350 bpm
No p wave

Question 9

ST segment elevation

Answer 9

Greater than 1 mm indicates MI. emergency

Compare ST to horz line before QRS

Question 10

ST depression

Answer 10

Greater than 2.0 mm means stop exercise and wait for sx to subside. If they dont treat as emergency

(downsloping and horz)

Upsoping not as strict

Question 11

1st degree AV Block

Answer 11

PR greater than 0.2

No problems

Question 12

2nd degree type 1 (Wenckebach)

Answer 12

Progressively longer until drop

Question 13

2nd degree type 2 (mobitz)

Answer 13

PR is the same each time but random drop

Worse than type 1

Question 14

3rd degree

Answer 14

Most severe. Stop exercise
Random P waves and QRS, unrelated

Question 15

Inverted T wave

Answer 15

Myocardial ischemia or LVT hypertrophy due to CHF