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Pulseless Electrical Activity -ANSWER-Organized electrical rhythm on
the EKG monitor without a corresponding mechanical pulse.
Atrial Fibrillation -ANSWER-Irregularly irregular rhythm featuring
fibrillatory waves instead of discrete P waves.
Atrial Flutter -ANSWER-Sawtooth or picket-fence flutter waves with a
regular or variable ventricular response.
Supraventricular Tachycardia -ANSWER-Regular, narrow-complex
tachycardia with hidden P waves and a rate usually exceeding 150 bpm.
Premature Atrial Contraction -ANSWER-Early, abnormally shaped P
wave followed by a normal narrow QRS complex.
Premature Ventricular Contraction -ANSWER-Early, wide, bizarre QRS
complex with no preceding P wave, followed by a compensatory pause.
, Multifocal Atrial Tachycardia -ANSWER-Irregular rhythm with at least
three distinct P wave morphologies and a rate over 100 bpm.
Junctional Escape Rhythm -ANSWER-Rhythm originating from the AV
junction at 40-60 bpm with inverted or absent P waves.
Accelerated Junctional Rhythm -ANSWER-Junctional rhythm
maintaining a rate between 60 and 100 beats per minute.
Junctional Tachycardia -ANSWER-Junctional rhythm maintaining a rate
exceeding 100 beats per minute.
SA Node Intrinsic Firing Rate -ANSWER-60 to 100 beats per minute.
AV Junction Intrinsic Firing Rate -ANSWER-40 to 60 beats per minute.
Purkinje Fibers Intrinsic Rate -ANSWER-20 to 40 beats per minute.
Absolute Refractory Period -ANSWER-Phase where myocardial cells
cannot generate an action potential regardless of stimulus strength.
Relative Refractory Period -ANSWER-Phase where a stronger-than-
normal stimulus can trigger a cardiac action potential.