WITH ANSWERS
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"
2nd degree heart block type 1 (Wenkebach) - Answer--Progressively
longer PR interval until the P wave is not followed by a QPR
2nd Degree Heart Block (Mobitz II) - Answer--Rare, but more serious
Sudden appearance of a nonconducted P-wave
P-waves are nl, but some aren't followed by a QRS complex
PR & RR intervals are constant
3rd degree heart block - Answer--no obvious correlation between p
and qrs, need pace maker
premature ventricular contraction (PVC) - Answer--a ventricular
contraction preceding the normal impulse initiated by the SA node
(pacemaker)
Bigeminy PVC - Answer--every other beat is a PVC