ANSWERS GRADED A+
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)
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