100%(3)3 out of 3 people found this document helpful
This preview shows page 1 - 4 out of 6 pages.
ECG Rhythms and other helpful tools Rhythm ECG Characteristics Strip Example 1. Normal sinus Rhytm (NSR)P Wave:YES PR Interval:0.12-0.20 sec QRS:0.06-0.10 sec Rate:60-100 bpm Regularity:Regular 2. Sinus Bradycardia Causes: •Intrinsic sinus node disease •Increased parasympathetic tone •Drug effect P Wave:YES PR Interval:0.12-0.20 sec QRS:0.06-0.10 sec Rate:< 60 bpm Regularity:Regular 3. Sinus Tachycardia Causes: •Exercise •Hypovolemia •Medications •Feber •Hypoxia •Substances •Anxiety, Fear •Acute MI •Fight or Flight •Congestive Heart Failure P Wave:YES PR Interval:0.12-0.20 sec QRS:0.06-0.10 sec Rate:> 100 bpm Regularity:Regular
Rhythm ECG Characteristics Strip Example 4. SR wPACs (Premature atrial complexes) Causes: •Normal •Excessive use of caffeine, tobacco, or alcohol •CHF •Myocardial ischemia or injury •Hypokalemia, Dig toxicity •COPD P Wave:YES, early & upright, different from Sinus PR Interval:0.12-0.20 sec QRS:0.06-0.10 sec Rate:< 100 bpm dependent on underlying rhythm Regularity:irregular 5. SR wPVCs (Premature atrial complexes) Causes: •Gastric overload•Stress•Caffeine, Alcohol, Nicotine•Heart Disease•Acid-Base Imbalance•Electrolyte Imbalance•Cyclic Antidepressants•Hypoxia•Acidosis•Acute MIP Wave:usually absent not present PR Interval:follows the underlying rhythm, but in the early complex no P wave is present QRS:0.06-0.10 sec underlying, with 0.12 sec or greater; bizarre and notched Rate:dependent on underlying rhythm Regularity:6. Atrial Fibrillation Causes: •Ischemic heart disease •Hypoxia •Acute MI •Digitalis toxicity •Mitral or tricuspid disease P Wave:not identifiable PR Interval:not measurable QRS:0.06 – 0.10 sec Rate:Atrial: 400-700 bpm Ventricle: 160-180 bpm Regularity:irregular
Rhythm ECG Characteristics Strip Example 7. Atrial Flutter Causes: •Ischemic heart disease •Hypoxia •Acute MI •Dig Toxicity•Mitral or Tricuspid