EKG RHYTHMS EXAM WITH CORRECT
ANSWERS 2025
1. Normal 60-100 bpm
Sinus all complexes normal and evenly spaced
Rhythm (P, QRS, T)
2. Sinus - SA node doesn't fire
Arrest - notice absence of P-wave for a complete cycle (a
missed cycle)
3. Sinus all complexes normal but rhythmically irreg
arrhythmia - normal finding (esp in young pts) that has to do with
breathing (rate: inhale-in-
crease, exhale-decrease)
4. Sinus <60
Bradycar- dia normal sinus
rhythm
5. Sinus Tachycar- >100 (100-
dia 150)
normal sinus
rhythm
6. Wandering Hint: try never to pick this
atrial - impulse originate from varying points in
pacemaker atria
- variation in P wave contour, PR-I, PP-I
and thus RR-I
7. P wave vs T wave P generally
smaller than T
8. 1/
13
, EKG RHYTHMS EXAM WITH CORRECT
ANSWERS 2025
MAT (multifocal - impulse originates at ditt places in atria so P waves ditt
and intervals might notbe consistent
atrial
tachy) - assoc w/ severe
pulm dz
9. Atrial A: 350-450 (atria quivering)
Fibrillation - irreg-irreg rhythm (R-RI=irreg)
**unsure/no P-wave (non-distinguishable)**
- irreg rhythm BUT reg QRS!
Danger: increase the risk of thromboemoblic events don't
convert unless occurring less than 48 hrs, if don't know pt
need to be put on thrombolytics)
10. Atrial A: 250-350
Flutter - "saw tooth" p-waves
-a continuous rapid sequence of atrial complexes from a
single rapid-firing atrial focus
(hint: if see 2 P waves and QRS think A Flutter)
11. Junctional Escape retrograde atrial
depolarization
beats P' is inverted
12. Junctional 40-60 Regular!
rhythm -impulse from AV node w/ retro/antegrade
transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
2/
13
ANSWERS 2025
1. Normal 60-100 bpm
Sinus all complexes normal and evenly spaced
Rhythm (P, QRS, T)
2. Sinus - SA node doesn't fire
Arrest - notice absence of P-wave for a complete cycle (a
missed cycle)
3. Sinus all complexes normal but rhythmically irreg
arrhythmia - normal finding (esp in young pts) that has to do with
breathing (rate: inhale-in-
crease, exhale-decrease)
4. Sinus <60
Bradycar- dia normal sinus
rhythm
5. Sinus Tachycar- >100 (100-
dia 150)
normal sinus
rhythm
6. Wandering Hint: try never to pick this
atrial - impulse originate from varying points in
pacemaker atria
- variation in P wave contour, PR-I, PP-I
and thus RR-I
7. P wave vs T wave P generally
smaller than T
8. 1/
13
, EKG RHYTHMS EXAM WITH CORRECT
ANSWERS 2025
MAT (multifocal - impulse originates at ditt places in atria so P waves ditt
and intervals might notbe consistent
atrial
tachy) - assoc w/ severe
pulm dz
9. Atrial A: 350-450 (atria quivering)
Fibrillation - irreg-irreg rhythm (R-RI=irreg)
**unsure/no P-wave (non-distinguishable)**
- irreg rhythm BUT reg QRS!
Danger: increase the risk of thromboemoblic events don't
convert unless occurring less than 48 hrs, if don't know pt
need to be put on thrombolytics)
10. Atrial A: 250-350
Flutter - "saw tooth" p-waves
-a continuous rapid sequence of atrial complexes from a
single rapid-firing atrial focus
(hint: if see 2 P waves and QRS think A Flutter)
11. Junctional Escape retrograde atrial
depolarization
beats P' is inverted
12. Junctional 40-60 Regular!
rhythm -impulse from AV node w/ retro/antegrade
transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
2/
13
