and Answers 2025/2026 (Basic A Dysrhythmia)
normal sinus rhythm answer-heart rhythm originating in the
sinoatrial node with a rate in patients at rest of 60 to 100 beats
per minute
Sinus Arrhythmia answer-Appearance is ALMOST NORMAL:
Respiratory - Circulatory interaction
Rate INCREASES with INSPIRATION (IN=IN)
Sinus Bradycardia answer-<60
normal sinus rhythm
Sinus Tachycardia answer->100 (100-150)
normal sinus rhythm
Premature Atrial Contraction (PAC) 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 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) answer-an irregular and often very fast
heart rate originating from abnormal conduction in the atria
Atrial Flutter answer-irregular beating of the atria; often
described as "a-flutter with 2 to 1 block or 3 to 1 block"
Junctional Rhythm answer-40-60 Regular!
-impulse from AV node w/ retro/antegrade transmission
- P wave often inverted/buried/follow QRS
- slow rate