EKG Test HCA Test Questions with 100% Complete Solutions, Rated A+

normal sinus rhythm - HR 60-100 bpm Regular Sinus Bradycardia - HR 60 bpm Regular Sinus Tachycardia - HR 100 bpm Regular sinus dysrhythmia - HR 60-100 bpm Irregular rhythm P waves normal QRS complexes normal PR Intervals normal Sinus Arrest - HR 60-100 bpm Rhythm is irregular where there is a pause P waves, QRS complexes and PR intervals are normal and all look alike (but absent where there is a pause in rhythm) Wandering Atrial Pacemaker - -HR 60-100 bpm -Slightly irregular -P waves differ, as frequently as from beat to beat, may be upright or inverted, can even be absent -QRS complexes normal, all appear the same -PR intervals vary, when the P wave is present the P'R intervals may be normal, shortened, or prolonged -QT intervals within normal range but may vary Premature Atrial Complexes - -Rate depends on underlying rhythm -Irregular due to early beat -P' wave may be upright or inverted, will appear different than those of the underlying rhythm -QRS complexes are normal -PR intervals can be normal, shorter than 0.12 seconds in duration or prolonged -QT intervals within normal range but may be shortened Bigeminal Premature atrial complex - Every other beat Trigeminal - Every third beat Quadrigeminal - Every fourth beat Atrial Tachycardia (SVT) - -HR 150-250 bpm -Regular unless the onset is witnessed (thereby producing paroxysmal irregularity) -P' waves may be upright or inverted, will appear different than those of the underlying rhythm, can be hidden in the preceding T wave -QRS normal -PR intervals can be normal, shorter than 0.12 seconds in duration or unmeasurable if the P wave can't be distinguished from the preceding T wave Atrial Flutter - -Ventricular rate may be slow, normal, or fast; atrial rate is between 250 and 350 beats per minute -May be regular or irregular -P waves absent, instead there are flutter waves -QRS complexes are normal -PR intervals unmeasurable