Ecg or ekg sample strips (MS Cardiovascular)

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Ecg or ekg sample strips (MS Cardiovascular)

  1. 1. ECG or EKG Strips
  2. 2. Premature Ventricular Contraction Rhythm Irregular Rate The underlying rate P Wave Absent PR Interval Not measurable QRS Wide (> 0.10 sec), bizarre appearance Notes Two PVCs together are termed a couplet while three PVCs in a row with a fast rhythm is ventricular tachycardia
  3. 3. Sinus Tachycardia Rhythm Regular Rate Fast (> 100 bpm) P Wave Normal, may merge with T wave at very fast rates PR Interval Normal (0.12-0.20 sec) QRS Normal (0.06-0.10 sec) Notes QT interval shortens with increasing heart rate
  4. 4. Sinus Bradycardia Rhythm Regular Rate Slow (< 60 bpm) P Wave Normal PR Interval Normal (0.12-0.20 sec) QRS Normal (0.06-0.10 sec) Notes
  5. 5. Sinus Arrhythmia Rhythm Irregular, varying with respiration Rate Normal (60-100 bpm) and rate may increase during inspiration P Wave Normal PR Interval Normal (0.12-0.20 sec) QRS Normal (0.06-0.10 sec) Notes Heart rate frequently increases with inspiration, decreasing with expiration
  6. 6. Atrial Dysrhythmias Premature Atrial Contraction Rhythm Irregular Rate Usually normal but depends on underlying rhythm P Wave Premature, positive and shape is abnormal PR Interval Normal or longer QRS 0.10 sec or less Notes
  7. 7. Atrial Flutter Rhythm Regular or irregular Rate Fast (250-350 bpm) for Atrial, but ventricular rate is often slower P Wave Not observable, but saw-toothed flutter waves are present PR Interval Not measureable QRS Normal (0.06-0.10 sec) Notes
  8. 8. Atrial Fibrillation Rhythm Irregular Rate Very fast (> 350 bpm) for Atrial, but ventricular rate may be slow, normal or fast P Wave Absent - erratic waves are present PR Interval Absent QRS Normal but may be widened if there are conduction delays Notes
  9. 9. Ventricular Dysrhythmias Premature Ventricular Contraction Rhythm Irregular Rate The underlying rate P Wave Absent PR Interval Not measurable QRS Wide (> 0.10 sec), bizarre appearance Notes Two PVCs together are termed a couplet while three PVCs in a row with a fast rhythm is ventricular tachycardia
  10. 10. Premature Ventricular Contraction: Bigeminy Rhythm Irregular Rate The underlying rate P Wave Absent PR Interval Not measurable QRS Wide (> 0.10 sec), bizarre appearance Notes PVC appears every second beat
  11. 11. Premature Ventricular Contraction: Quadrigeminy Rhythm Irregular Rate The underlying rate P Wave Absent PR Interval Not measurable QRS Wide (> 0.10 sec), bizarre appearance Notes PVC appears every fourth beat
  12. 12. Premature Ventricular Contraction: Trigeminy Rhythm Irregular Rate The underlying rate P Wave Absent PR Interval Not measurable QRS Wide (> 0.10 sec), bizarre appearance Notes PVC appears every third beat
  13. 13. Ventricular Tachycardia Rhythm Regular Rate Fast (100-250 bpm) P Wave Absent PR Interval Not measurable QRS Wide (>0.10 sec), bizarre appearance Notes Ventricular tachycardia can be monomorphic (form of each QRS is similar), or polymorphic (QRS forms vary)
  14. 14. Ventricular Fibrillation Rhythm Highly irregular Rate Unmeasurable P Wave Absent PR Interval Not measurable QRS None Notes EKG tracings is a wavy line
  15. 15. AV BLOCKS: First Degree AV Block Rhythm Regular Rate The underlying rate P Wave Normal PR Interval Prolonged (>0.20 sec) QRS Normal (0.06-0.10 sec) Notes A first-degree AV block is actually a delay rather than a block
  16. 16. Second Degree AV Block: Type I (Mobitz I or Wenckebach) Rhythm Irregular but with progressively longer PR interval lengthening Rate The underlying rate P Wave Normal PR Interval Progressively longer until a QRS complex is missed, then cycle repeats QRS Normal (0.06-0.10 sec) (No QRS complex) Notes
  17. 17. Second Degree AV Block: Type II (Mobitz II) Rhythm Regular (atrial) and irregular (ventricular) Rate Characterized by Atrial rate usually faster than ventricular rate (usually slow) P Wave Normal form, but more P waves than QRS complexes PR Interval Normal or prolonged QRS Normal or wide Notes
  18. 18. Third Degree AV Block Rhythm Regular, but atrial and ventricular rhythms are independent Rate Characterized by Atrial rate usually normal and faster than ventricular rate P Wave Normal shape and size, may appear within QRS complexes PR Interval Absent: the atria and ventricles beat independently. QRS Normal, but wide if junctional escape focus Notes

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