Basic Dysrhythmia-Relias Questions with
Correct Verified Solutions Already Graded A+
2026
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
1
, 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!
2
Correct Verified Solutions Already Graded A+
2026
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
1
, 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!
2
