Basic Dysrhythmia Exam Questions and Answers

Basic Dysrhythmia Exam
Questions and Answers
Sinus Rhythm - Correct Answers: 60-100bpm

Present P-wave

PRI 0.12-0.20 seconds

QRS 0.12> seconds



Sinus Bradycardia - Correct Answers: 40-60bpm

Present P-wave

PRI 0.12-0.20 seconds

QRS 0.12> seconds



Sinus Tachycardia - Correct Answers: 100-160bpm

Present P-wave

PRI 0.12-0.20 seconds

QRS 0.12> seconds



Sinus arrhythmia - Correct Answers: Irregular

Normal or slow

Present P-Wave

PRI 0.12-0.20 seconds

QRS 0.12> seconds



Sinus Arrest/Exit block - Correct Answers: Regular rhythm w/ pause

P-wave not seen until next complex



Atrial Fibrillation (A-Fib) - Correct Answers: Grossly irregular

, 400< ventricular varies

Wavy P-wave

PRI not measureable

QRS 0.12> seconds



Atrial Flutter - Correct Answers: Regular or Irregular

250-400 (depending on conduction)

"Saw-tooth" P-waves

PRI not measureable

QRS 0.12> seconds



Paced Atrial - Correct Answers: "Spike" before P-wave



1° AVB - Correct Answers: Rate determined by rhythm

1 P-wave to each QRS

PRI prolonged >0.20 seconds

QRS 0.10>



2° AVB Type I (Wenkebach) - Correct Answers: "Long, Long, Longer, Dropped... then you have a
Wenkebach"

Persistent P-waves until not included

PRI progressively lengthen

QRS 0.10>



2° AVB Type II (Mobitz) - Correct Answers: Irregular ventricular

P-wave before each QRS until no QRS

PRI normal until no QRS

QRS 0.10>