Atrial Rhythms

Question 1

It is a beat, not a rhythm
Rhythm: regular
Rate: depends on underlying rhythm
P wave: different morphology and can be hidden in T wave
PR: can be shorten or prolonged
QRS: .04-.12

Answer 1

Premature atrial contraction

Question 2

PAC

Answer 2

Causes: CHF, ischemia, fatigue, PE, dig tox, electrolyte imbalance, caffeine, tobacco, etoh
S/s: often none, may have a palpitation
Treatment: none

Question 3

Rhythm: regular
Rate: A and V are the same 150-250
P wave: 1:1 uniform round may be hidden in the T wave
PR interval: .12-.20
QRS: .04-.12

Answer 3

SVT

Question 4

SVT

Answer 4

Causes: hypoxia, CAD, respiratory failure, dig tox
S/s: palpitations, severe anxiety, CHF, angina
Treatment: vagal maneuver, adenosine, cardio version

Question 5

Rhythm: irregular
Rate: irregular
P wave: not measured
PR: not measurable
QRS: 0.04-.12

Answer 5

Atrial fibrillation

Question 6

A fib/ a flutter

Answer 6

Causes: ischemia, hypoxia, PE, valve disease, MI, dig tox
S/s: palpitations, signs of decrease CO
Tx: calcium channel blocker, b blocker, amiodarone, ablation

Question 7

Rhythm: regular or irregular
Rate: A- 250-400 and V- varies
P wave: flutter waves sawtooth
PR: none
QRS: .04-.12

Answer 7

Atrial flutter