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7 Cards in this Set
- Front
- Back
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Premature Atrial Complex (rhythm, rate, P waves, PR interval, QRS duration) |
Rhythm: irregular because of early beat(s) Rate: usually within normal range, but depends on underlying rhythym P waves: premature, positive, differs from sinus P waves, may be lost in T wave PR interval: maybe normal or prolonged QRS duration: 0.11 seconds or less unless abnormally conducted |
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Wandering Atrial Pacemaker (rhythm, rate, P waves, PR interval, QRS duration) |
Rhythm: maybe irregular a pacemaker site shifts from SA node to ectopic atrial locations and AV junction Rate: usually 60-100 (if greater than 100; multifocal atrial tachycardia) P waves: size shape and direction may change from beat to beat PR interval: varies QRS duration: 0.11 seconds or less unless abnormally conducted |
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Atrial Tachycardia (rhythm, rate, P waves, PR interval, QRS duration) |
Rhythm: regular Rate: 101-250 P waves: Atrial P waves differ from sinus P waves with isoelectric baseline between p waves PR interval: maybe shorter or longer than usual QRS duration: 0.11 seconds unless abnormally conducted |
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Atrioventricular Nodal Reentrant Tachycardia (rhythm, rate, P waves, PR interval, QRS duration) |
Rhythm: usually very regular Rate: 150-250 bpm in adult typically 180-200 P waves: often hidden in QRS complex, negative p waves can appear if ventricles are stimulated first, P waves distorts QRS when atria depolarizes before after ventricles PR interval: p waves are not seen before QRS complex, therfore not measurable QRS duration: 0.11 seconds or less unless abnormally conducted |
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Atrio Reentrant Tachycardia / Wolff-Parkinson-White pattern (rhythm, rate, P waves, PR interval, QRS duration) |
Rhythm: regular unless associated with aFib Rate: usually 60-100 bpm if underlying rhythym is sinus in origin P waves: normal and positive in lead II unless WPW is associated with aFib PR interval: if P waves are observed less than 0.12 seconds because the impulse travels quickly across the accessory pathway, bypassing the normal delay in the AV node QRS duration: usually more than 0.12, delta wave may be seen |
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Atrial Flutter (rhythm, rate, P waves, PR interval, QRS duration) |
Rhythm: atrial regular upto 180, ventricular regular or irregular depending on AV conduction and blockade Rate: atrial rate ranges from 240-300 bpm, ventricular varies depending on AV block usually won't exceed 180 P waves: no identifiable P waves, sawtooth flutter present PR interval: not measurable QRS duration: .11 seconds or less but maybe widened if flutter waves bury QRS complex or if abnormally conducted |
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Atrial Fibrillation (rhythm, rate, P waves, PR interval, QRS duration) |
Rhythm: ventricular rhythym usually irregularly irregular Rate: 300-600 P waves: not identifiable PR interval: not measurable QRS duration: 0.11 seconds or less unless abnormally conducted |
