EXAM STUDY GUIDE 2026/2027
ACCURATE QUESTIONS WITH
CORRECT DETAILED SOLUTIONS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Blood flow through the heart - ANSWER ✔ SVC --> Rt atria --> Tricuspid
--> Rt ventricle --> Pulmonic valve --> Lungs --> Lt atria --> Mitral valve --
> Lt ventricle --> aortic valve --> aorta --> Body
2. EKG Times - ANSWER ✔ 6 second strip
1 small block = 0.04 secs
1 big block = 5 small boxes = 0.20 secs
15 big blocks = 3 seconds
3. P Wave - ANSWER ✔ atrial depolarization
4. PR Interval - ANSWER ✔ time it takes for the impulse to get from atrial to
ventricles
0.12 - 0.20 seconds
5. QRS Interval - ANSWER ✔ ventricular depolarization
< 0.12 seconds
6. ST Segment - ANSWER ✔ early depolarization of ventricles
depression = myocardial infarction
elevation = myocardial injury
7. T Wave - ANSWER ✔ repolarization of ventricles
,8. Heart blocks - ANSWER ✔ No changes in PR Interval
- QRS complexes present = 1st degree
- No QRS complexes = 2nd degree type II
9. Changes in PR Interval
- R to R interval regular = 3rd degree
- R to R interval irregular = 2nd degree type I
10.Conduction pathway - ANSWER ✔ Sinus node - inerarterial tracts - atrium
- intermodal tracts - AV node - bundle of HIS - bundle branches - purkinje
fibers - ventricles
11.Inherent rates - ANSWER ✔ SA node = 60-100
AV node = 40-60
Ventricle = 20-40
12.Atrial flutter - ANSWER ✔ Sawtooth pattern
13.Atrial fibrillation - ANSWER ✔ Waves between QRS
14.Supraventricular tachycardia - ANSWER ✔ No P wave, rate > 150
15.Junctional rhythms - ANSWER ✔ P wave inverted or absent
Junctional bradycardia: < 40
Junctional rhythm: 40-60
Accelerated junctional: 60-100
Junctional tachycardia: > 100
16.Ventricular tachycardia - ANSWER ✔ marching nuns
17.Torsades de pointes - ANSWER ✔ Rate > 200, no P waves, wide QRS
18.Ventricular fibrillation - ANSWER ✔ Rate cannot be counted
19.Idioventricular - ANSWER ✔ Rate 20-40
T wave opposite QRS, no P wave, wide QRS
20.Accelerated Idioventricular - ANSWER ✔ Rate 40-100
, T wave opposite QRS, no P wave, wide QRS
21.Asystole - ANSWER ✔ Flat line
22.Big Box seconds - ANSWER ✔ 0.20 Seconds
23.QRS - ANSWER ✔ <20 Seconds
24.QT - ANSWER ✔ 0.36-0.44 Seconds
25.How many small boxes make 1 big box - ANSWER ✔ 5 Small Boxes
26.How to count beats on regular rhythm ( Equation) - ANSWER ✔ 1500/
How rows between R's
27.QRS respresents - ANSWER ✔ ventricular depolarization
28.Repolarization mean what happening to the heart - ANSWER ✔
Relaxation
29.Depolarization means what happening to the heart - ANSWER ✔
Contraction
30.A normal PR interval means - ANSWER ✔ 0.12-20 seconds
31.A normal QT interval measurement is - ANSWER ✔ 0.36-0.44 seconds
32.PR interval - ANSWER ✔ The first hump in the complex
33.Elevation or Depression of the ST segment could mean your patient is
experiencing ischemia injury True or False - ANSWER ✔ True
34.Last hump in the complex is called what - ANSWER ✔ T wave
35.EKG measures numbers - ANSWER ✔ PR 0.19
QRS 0.05
RR 0.78