EKG Interpretation (HCA)
Exam
(Questions and Answers)
2026
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, EKG Interpretation (HCA)
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1. Atrial Rhythms • Are not classic "P-wave" rhythms, if equal/consistent/nonvarying P-waves are
easily identified then the rhythm is NOT atrial in origin
• Atrial rhythms are routinely fast
• Ventricular rates can be controlled (<100) or uncontrolled (>100)
• Ventricular responses and rates can reach up to 220 - 240 ppm
• Ventricular regularity can be regular or irregular, depending on the rhythm:
- AFib, WAP & MAT = ALWAYS IRREGULAR
- Aflutter = Regular or Irregular
- SVT/PSVT, ATach = ALWAYS REGULAR
• QRS-complexes can be Narrow (<0.12 sec) or Wide (>0.12 sec). This is measured
using the ECG paper (<0.12 = less than 3 small boxes; <0.12 = greater than 3 small
boxes)
2. Atrial Rhythms & • A-Fib: Atria Rate >350 - 500; Ventricular Rate >220 - 240 ppm
Associated Rates • A-Flutter: Atrial Rate >250 - 450; Ventricular Rate >220 - 240 ppm
• Atrial Tachycardia: Atria > 220 - 240; Ventricular Rate = Atrial Rate (1:1 ratio)
• Supraventricular Tachycardia: >150 - 160 ppm, even upwards of 220 - 240 ppm;
Ventricular Rate = Atrial Rate (1:1 ratio)
• Wandering Atrial Pacemaker (WAP): Atrial Rate <100 ppm; Ventricular Rate = Atrial
Rate
• Multifocal Atrial Tachycardia (MAT): Atrial Rate >100 ppm; Ventricular Rate = Atrial
Rate
3. Premature Atrial Atrial ectopy (not a rhythm) similar to an ill timed hiccup within the atria, or the
Contraction (PAC) atria playing a game of interrupting cow.
4. Atrial Fibrillation Wavy and chaotic baseline, noted overall irregularity, AFib QRS complexes can be
(A-Fib) 'wide' or 'narrow'
2026
Exam
(Questions and Answers)
2026
Expert Verified
(With A+ Grades Guarantee)
, EKG Interpretation (HCA)
Study online at https://quizlet.com/_dv6d78
1. Atrial Rhythms • Are not classic "P-wave" rhythms, if equal/consistent/nonvarying P-waves are
easily identified then the rhythm is NOT atrial in origin
• Atrial rhythms are routinely fast
• Ventricular rates can be controlled (<100) or uncontrolled (>100)
• Ventricular responses and rates can reach up to 220 - 240 ppm
• Ventricular regularity can be regular or irregular, depending on the rhythm:
- AFib, WAP & MAT = ALWAYS IRREGULAR
- Aflutter = Regular or Irregular
- SVT/PSVT, ATach = ALWAYS REGULAR
• QRS-complexes can be Narrow (<0.12 sec) or Wide (>0.12 sec). This is measured
using the ECG paper (<0.12 = less than 3 small boxes; <0.12 = greater than 3 small
boxes)
2. Atrial Rhythms & • A-Fib: Atria Rate >350 - 500; Ventricular Rate >220 - 240 ppm
Associated Rates • A-Flutter: Atrial Rate >250 - 450; Ventricular Rate >220 - 240 ppm
• Atrial Tachycardia: Atria > 220 - 240; Ventricular Rate = Atrial Rate (1:1 ratio)
• Supraventricular Tachycardia: >150 - 160 ppm, even upwards of 220 - 240 ppm;
Ventricular Rate = Atrial Rate (1:1 ratio)
• Wandering Atrial Pacemaker (WAP): Atrial Rate <100 ppm; Ventricular Rate = Atrial
Rate
• Multifocal Atrial Tachycardia (MAT): Atrial Rate >100 ppm; Ventricular Rate = Atrial
Rate
3. Premature Atrial Atrial ectopy (not a rhythm) similar to an ill timed hiccup within the atria, or the
Contraction (PAC) atria playing a game of interrupting cow.
4. Atrial Fibrillation Wavy and chaotic baseline, noted overall irregularity, AFib QRS complexes can be
(A-Fib) 'wide' or 'narrow'
2026
