Heart Blocks and Strips Flashcards
1
Q
How long should the PR interval be?
A
- 0.12-0.20 or
- 3-5 small squares
2
Q
How long should the QRS interval be?
A
0.06-0.12 or
< than 3 small squares
3
Q
How do you calculate the HR w/ a 6 second strip?
A
- # of R waves in 6 seconds x10
- Rhythm must be regular
4
Q
How do you calculate an irregular rhythm on a strip?
A
300 divided by the number of boxes between R waves
5
Q
Characteristics of a 1st degree heart block…
A
partial block Consistent prolonged PR interval
6
Q
Characteristics of a 2nd degree, type 1 heart block…
A
- progressive block
- Progressively long PR interval
- Eventual QRS drop and cycle repeats
- “long, long, drop”
7
Q
Characteristics of a 2nd degree, type 2 heart block…
A
- intermittent block
- No progressive PR
- interval Normal EKG rhythm with occasional QRS drops
- “normal, normal, drop”
8
Q
Characteristics of a 3rd degree heart block…
A
- complete block
- P waves and QRS waves are not coordinated
- Each will have their own regular, unrelated tempos
9
Q
What type of drugs end in “pril” and what do they do?
A
- Ace Inhibitors
- Prevents fluid retention
- Reduces blood pressure
10
Q
What type of drugs end in “olol” and what do they do?
A
- Beta blockers
- Slow heart
- Reduce BP
11
Q
What type of drugs end in “ipine” and what do they do?
A
- Calcium channel blockers
- Reduce SVR, BP, contractility, conduction
- Diltiazem & Veropamil are also calcium channel blockers
12
Q
What type of drugs end in “ides” and what do they do?
A
- Diuretics
- Reduces fluid volume
13
Q
What are normal potassium levels?
A
3.6 to 5.2
