BASIC DYSRHYTHMIA RELIAS EXAM
Question and Answer 2026 | Complete
Study Guide | A+ Verified
• normal sinus rhythm. CORRECT ANSWER: heart rhythm originating in the sinoatrial
node with a rate in patients at rest of 60 to 100 beats per minute
• Sinus Arrhythmia. CORRECT ANSWER: Appearance is ALMOST NORMAL:
Respiratory - Circulatory interaction
Rate INCREASES with INSPIRATION (IN=IN)
• Sinus Bradycardia. CORRECT ANSWER: <60
normal sinus rhythm
• Sinus Tachycardia. CORRECT ANSWER: >100 (100-150)
normal sinus rhythm
• Premature Atrial Contraction (PAC). CORRECT ANSWER: Heart Rate: Depends on
underlying rhythm
Regularity: Interrupts the regularity of underlying rhythm
P-Wave: can be flattened, notched, or unusual. May be hidden within the T wave
PRI: measures between .12-.20 seconds and can be prolonged; can be different from
other complexes
QRS: <.12 seconds
• Sinus Arrest/Pause. CORRECT ANSWER: - SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
length of pause ≠ multiple of normal rate (block)
• Atrial Fibrillation (A-Fib). CORRECT ANSWER: an irregular and often very fast heart
rate originating from abnormal conduction in the atria
• Atrial Flutter. CORRECT ANSWER: irregular beating of the atria; often described as
"a-flutter with 2 to 1 block or 3 to 1 block"
• Junctional Rhythm. CORRECT ANSWER: 40-60 Regular!
-impulse from AV node w/ retro/antegrade transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
• Junctional Tachycardia. CORRECT ANSWER: >60 bpm (ms. K; 150-250)
Question and Answer 2026 | Complete
Study Guide | A+ Verified
• normal sinus rhythm. CORRECT ANSWER: heart rhythm originating in the sinoatrial
node with a rate in patients at rest of 60 to 100 beats per minute
• Sinus Arrhythmia. CORRECT ANSWER: Appearance is ALMOST NORMAL:
Respiratory - Circulatory interaction
Rate INCREASES with INSPIRATION (IN=IN)
• Sinus Bradycardia. CORRECT ANSWER: <60
normal sinus rhythm
• Sinus Tachycardia. CORRECT ANSWER: >100 (100-150)
normal sinus rhythm
• Premature Atrial Contraction (PAC). CORRECT ANSWER: Heart Rate: Depends on
underlying rhythm
Regularity: Interrupts the regularity of underlying rhythm
P-Wave: can be flattened, notched, or unusual. May be hidden within the T wave
PRI: measures between .12-.20 seconds and can be prolonged; can be different from
other complexes
QRS: <.12 seconds
• Sinus Arrest/Pause. CORRECT ANSWER: - SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
length of pause ≠ multiple of normal rate (block)
• Atrial Fibrillation (A-Fib). CORRECT ANSWER: an irregular and often very fast heart
rate originating from abnormal conduction in the atria
• Atrial Flutter. CORRECT ANSWER: irregular beating of the atria; often described as
"a-flutter with 2 to 1 block or 3 to 1 block"
• Junctional Rhythm. CORRECT ANSWER: 40-60 Regular!
-impulse from AV node w/ retro/antegrade transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
• Junctional Tachycardia. CORRECT ANSWER: >60 bpm (ms. K; 150-250)
