Normal vs Abnormal
This rhythm is considered the gold standard for normal cardiac electrical activity.
What is Normal Sinus Rhythm?
A heart rhythm with a rate of 60–100 bpm and upright P waves before each QRS.
What is Normal Sinus Rhythm?
May be seen with excessive movement where the baseline appears wavy, bumpy, or tremulous.
What is artifact?
Main pacemaker generating impulses 60-100 beats a minute.
What is Sinoatrial Node or SA node
Number of large boxes between R waves in a regular rhythm can estimate this.
What is Heart Rate?
A rhythm with no identifiable P waves, irregularly irregular QRS complexes.
What is Atrial Fibrillation?
A regular, narrow-complex rhythm at 160 bpm, sudden onset and offset.
What is Supraventricular Tachycardia (SVT)?
When there are spikes before the P wave and the QRS
What is AV paced?
Represents atria depolarization or atrial contracting
What is a P wave?
The PR interval should be this many seconds.
What is 0.12–0.20 seconds?
This life-threatening rhythm shows a chaotic, disorganized pattern with no QRS complexes.
What is Ventricular Fibrillation?
A wide QRS rhythm at 140 bpm with no P waves.
What is Ventricular Tachycardia?
The 4 heart valves
What is Tricuspid, Pulmonary, Mitral/Bicuspid, Aortic valves.
Follows the P wave and represents depolarization of the ventricles.
The QRS complex duration should be less than this.
What is 0.12 seconds?
A rhythm with more P waves than QRS complexes, usually indicating AV dissociation, no P wave and QRS correlation.
What is 3rd Degree Heart Block?
PR interval progressively lengthens until a QRS is dropped.
What is 2nd Degree AV Block Type I (Wenckebach)?
May become elevated or depressed and may indicate myocardial damage.
What is ST Segment?
When the heart is attempting to return to the resting rate
What is repolarization or diastole?
This interval represents the time from ventricular depolarization to repolarization.
What is QT interval?
This rhythm has a rapid rate with regular, sawtooth flutter waves.
What is Atrial Flutter?
A rhythm with consistent PR intervals but occasional non-conducted P waves.
What is 2nd Degree AV Block Type II?
When the QRS happens too early
What is a pre-ventricular contraction?
When the ventricles or atria are contracting
What is depolarization or systole?
Artifact on an EKG can be caused by....
What is shaking, muscle movement, coughing or shivering, old tele patches, sweating, hair?