EKG rhythms exam Questions
and Answers Verified Solutions
Latest Update (2026/2027)
Question:
Normal Sinus Rhythm
Answer:
60-100 bpm
all complexes normal and evenly spaced (P, QRS, T)
Question:
Sinus Arrest
Answer:
SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
Question:
Sinus arrhythmia
Answer:
all complexes normal but rhythmically irreg
- normal finding (esp in young pts) that has to do with breathing (rate:
inhale-increase, exhale-
decrease)
,Question:
Sinus Bradycardia
Answer:
<60
normal sinus rhythm
Question:
Sinus Tachycardia
Answer:
>100 (100-150)
normal sinus rhythm
Question:
Wandering atrial pacemaker
Answer:
Hint: try never to pick this
- impulse originate from varying points in atria
Question:
- variation in P wave contour, PR-I, PP-I and thus RR-I
P wave vs T wave
Answer:
, Question:
P generally smaller than T
MAT (multifocal atrial tachy)
Answer:
impulse originates at diff places in atria so P waves
diff and intervals might not be consistent
Question:
- assoc w/ severe pulm dz
Atrial Fibrillation
Answer:
A: 350-450 (atria quivering)
- 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)
Question:
Atrial Flutter
Answer:
A: 250-350
- "saw tooth" p-waves
- a continuous rapid sequence of atrial complexes from a single rapid-firing
atrial focus
and Answers Verified Solutions
Latest Update (2026/2027)
Question:
Normal Sinus Rhythm
Answer:
60-100 bpm
all complexes normal and evenly spaced (P, QRS, T)
Question:
Sinus Arrest
Answer:
SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
Question:
Sinus arrhythmia
Answer:
all complexes normal but rhythmically irreg
- normal finding (esp in young pts) that has to do with breathing (rate:
inhale-increase, exhale-
decrease)
,Question:
Sinus Bradycardia
Answer:
<60
normal sinus rhythm
Question:
Sinus Tachycardia
Answer:
>100 (100-150)
normal sinus rhythm
Question:
Wandering atrial pacemaker
Answer:
Hint: try never to pick this
- impulse originate from varying points in atria
Question:
- variation in P wave contour, PR-I, PP-I and thus RR-I
P wave vs T wave
Answer:
, Question:
P generally smaller than T
MAT (multifocal atrial tachy)
Answer:
impulse originates at diff places in atria so P waves
diff and intervals might not be consistent
Question:
- assoc w/ severe pulm dz
Atrial Fibrillation
Answer:
A: 350-450 (atria quivering)
- 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)
Question:
Atrial Flutter
Answer:
A: 250-350
- "saw tooth" p-waves
- a continuous rapid sequence of atrial complexes from a single rapid-firing
atrial focus
