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21 Cards in this Set

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Slurred S Wave

Downward projection of S wave. Still normal sinus

Sinus arrythmia

Looks kike normal sinus but is irregular. Related to respiration. (Normal pediatric variant)

Sinus arrest

Normal sinus with a dropped beat. Sinus brady or tachy

Foci

One or multiple cells that are sending impulses

Compensatory pause

Space where a beat should have been

Discoordinate

QRS and ST interval going opposite way

Irregularly irregular

No pattern to irregularity. "Chaos" Large number of foci

Retrograde depolarization

Impulse fires backwards

Terminal R wave

R wave that died

Parasympathetic blocker (atropine)

Speed heart

Sympathetic agent (norepi)

Increase BP, little effect on heart rate

Sympathetic agent (isoproterenol)

Increase CO and dilate bronchi

Monomorphic

One common shape of QRS complex

Polymorphic

QRS complex vary in height and alternating pattern. (Torsades de pointes)

Unifocal PVC

Originate from same spot in ventricles and appear the same

Multifocal PVC

Two or more ventricular complexes with different appearances. More than 1 focus that is initiating ventricular impulses

Couplet

2 PVC that occur together

Bigeminy

PVC that occur regularly in a rhythm

Rapid ventricular response (RVR)

Response rate over 100

Preexcitation

Early depolarization of ventricular tissuedue to accessory pathway btwn atria and ventricles

Delta wave

Indicates early departure from PR segment as a result of conduction through accessory pathway