EKG Certification Study Review Practice Test.

EKG Certification Study Review Practice Test. Bradycardia - Rate: below 60 bpm, P wave: upright, rounded, PR Interval: normal QRS: normal Normal Sinus Rhythm - Rate: 60-100 bpm, P wave: upright, rounded, PR Interval: normal QRS: normal Tachycardia - Rate: above 100 bpm, P wave: upright, rounded, PR Interval: normal QRS: normal Multifocal Atrial Tachycardia (MAT) - At least 3 different P waves, rate over 100 Premature Atrial Contractions (PAC) - Rate: underlying rhythm, with abnormal, ectopic beat Wandering Atrial Pacemaker (WAP) - At least 3 different P waves, rate 60-100 bpm Atrial Fibrillation (A Fib) - no P-P rate, irreg R-R rate, no P wave, chaotic line between QRS complexes Atrial Flutter - F wave rate: 250-350, normal R-R rate, classic "sawtooth" pattern between regular QRS complexes P wave - Atrial depolarization (contraction) QRS complex - Ventricular depolarization (contraction) T wave - Ventricular repolarization Premature Junctional Complex (PJC) - Rate: underlying rhythm with early ectopic, junctional complexes, inverted or absent P waves Junctional Escape - Rate: 40-60 bpm, P wave: inverted, absent, or after the QRS, QRS: normal Accelerated Junctional - Rate: 60-100 bpm, P wave: inverted, absent, or after the QRS, QRS: normal Junctional Tachycardia - Rate: over 100 bpm, P wave: inverted, absent, or after the QRS, QRS: normal Supraventricular Tachycardia - Rate: 150-250 bpm, regular rhythm First-Degree Heart Block - Rate: 60-100 bpm, PR Interval: 0.20 seconds or greater, P wave: normal, QRS: normal Second-Degree Heart Block, Type I (Mobitz I or Wenckebach) - Regular pattern of prolonging PR Interval (small, medium, long), followed by a dropped QRS complex Second-Degree Heart Block, Type II (Mobitz II) - All PR Intervals are the same (usually short) and random dropped QRS complexes. Third-Degree Heart Block - Random PR Intervals and random dropped QRS complexes Premature Ventricular Complex (PVC) - Rate: underlying rhythm with early, ectopic QRS complex, P wave: normal on normal complexes, absent on ectopic beats, QRS: normal on normal complexes, wide and bizarre on ectopic complexes Agonal - Rate: less than 20 bpm, P wave: absent, QRS: wide and bizarre Idioventricular - Rate: 20-40 bpm, P wave: absent, QRS: wide Accelerated Idioventricular - Rate: 40-100 bpm P wave: absent, QRS: wide