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9 Cards in this Set

  • Front
  • Back
Deciding on Rate (300 Rule)
- 300
- 150
- 100
- 75
- 60
Atrial Fibrillation
Atrial fibrillation is characterized by the presence of an irregularly irregular rhythm in the absence of
P waves. Undulations in the baseline (known as "fib waves")
- rapid
- controlled
- slow
MAT (Multifocal Atrial Tachycardia)
- rhythm is also irregularly irregular, but in which
definite P waves are present. Clinically, MAT is most often seen in patients with either pulmonary disease or multi-system problems (sepsis, shock, electrolyte abnormalities, etc.).
Atrial Flutter
- regular atrial activity that in adults almost always
occurs at a rate of 300/minute. Atrial flutter typically manifests a sawtooth appearance that is usually best seen in the inferior leads.
PSVT (Paroxysmal Supra-Ventricular Tachycardia)
PSVT is a regular supraventricular tachycardia that most often occurs at a rate of between 150 to 240
beats/minute. Atrial activity is usually not evident, although subtle notching or a negative deflection (representing retrograde atrial activity) may sometimes be seen at the tail end of the QRS complex.
Junctional (AV Nodal) Rhythms
Junctional (or AV Nodal) rhythms are regular supraventricular rhythms in which atrial activity reflects an AV nodal site of origin. As a result, the P wave in lead II will either be negative (preceding or following the QRS) or absent completely.
- AV nodal escape = 40-60 bpm
- Acc. Junctional rhythm = 61-99
- Junctional tach - >100 bpm
PACs (Premature Atrial Contractions)
The underlying rhythm is interrupted by an early beat arising from somewhere in the atria other than the SA node (different shape P Wave,
- double peaked P wave
PJCs (Premature Junctional Contractions)
The underlying rhythm is interrupted by an early beat arising from the AV node or junction. Most often the impulse is conducted with a narrow QRS complex that is similar (or identical) in appearance to that of normal sinus-conducted beats. The P wave in lead II is negative or absent
PVCs (Premature Ventricular Contractions)
The underlying rhythm is interrupted by an early beat arising from the ventricles. PVCs are wide and have an appearance that is very different from that of the normal sinus-conducted beats.