1 / 20

EKG 2

EKG 2. Normal Sinus Rhythm. Sinus Node is the Pacemaker Rate 60-100 bpm R-R intervals constant; rhythm regular Rate: atrial and ventricular rates = P Waves: Uniform; One P Wave for every QRS complex PRI: .12-.20 seconds; constant across strip QRS measures less than .12 seconds.

vinny
Télécharger la présentation

EKG 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EKG 2

  2. Normal Sinus Rhythm • Sinus Node is the Pacemaker • Rate 60-100 bpm • R-R intervals constant; rhythm regular • Rate: atrial and ventricular rates = • P Waves: Uniform; One P Wave for every QRS complex • PRI: .12-.20 seconds; constant across strip • QRS measures less than .12 seconds

  3. Sinus Bradycardia • Sinus Node is the PM; < 60 bpm • R-R intervals are constant; rhythm is regular • Atrial & Ventricular rates =; HR < 60 • Uniform P Waves • PRI interval measures b/t .12-.20 seconds • QRS complex measures < .12 seconds

  4. Sinus Tachycardia • Sinus Node is PM. Rate > 100 bpm • R-R regular • Atrial & Ventricular Rates = • HR usually b/t 100-160 bpm • Uniform P Wave in front of QRS • PRI interval b/t .12 - .20 seconds • QRS measures less than .12 seconds

  5. Sinus Arrhythmia • Sinus Node is PM • Rate increases as pt breathes in and decreases when breathing out • R-R intervals vary • HR usually 60-100 bpm but may be slower • Uniform P Wave in front of QRS • PRI interval b/t .12-.20 seconds • QRS measures less than .12 seconds

  6. Premature Atrial Contraction • Pacemaker is irritable focus in atrium • Single beat will interrupt regularity • Rate: Underlying rhythm • P Wave: Different Morphology - It will be flattened, notched, or otherwise unusual • PRI: .12-.20 seconds; may be prolonged • QRS: Less than .12 seconds

  7. Wandering Pacemaker • Pacemaker sites wanders b/t Sinus, Atria, and AV Junction • Slightly irregular • Atrial & Ventricular Rates = . Heart Rate usually b/t 60-100 bpm. Sometimes slower • Morphology of P Wave changes as PM site changes • PRI should be less than .20 seconds • QRS: Less than .12 seconds

  8. Atrial Tachycardia • PM is irritable site within atria • R-R constant ; Rhythm is regular • Atrial & Vent. Rates =. HR usually b/t 150-250 bpm • P Wave: One P to every QRS; May be flattened or notched; P Waves can be lost in preceding T Wave • PRI: .12-20 seconds • QRS measures less than .12 seconds

  9. Atrial Flutter • Single irritable focus in atria • Atrial rhythm is regular; Ventricualr rhythm may or may not be regualr • Rate: Atrial rate b/t 250-350 bpm • P Wave: “Saw tooth” or flutter waves. • PRI: Not measured • QRS: Less than .12 seconds

  10. Atrial Fibrillation • Several foci iniate impulses • Atrial & Ventricular rhythm is unmeasurable; chaotic • Rate: Atria - Too fast to count. Vent. = if less than 100 “controlled”, if > 100 then “rapid ventricular response”. • P Wave: No true P Waves • PRI: Not measured • QRS less than .12 seconds

  11. First Degree Heart Block • AV Node holds each Sinus impulse longer • Regularity will depend on underlying rhythm • P Waves: Upright and uniform. • PRI: Constant across the strip but will always be greater than .20 seconds • QRS less than .12 seconds

  12. 2nd Degree Heart Block (Classical) • AV Node conducts/blocks some beats • If conduction ratio is consistant= regular; if not consistant the rhythm will be irregular • Atrial rate normal; ventricular rate usually bradycardia. • P Waves upright & uniform. More P Waves than QRS complexes • PRI may be longer than .20. QRS < .12

  13. 2nd Degree Heart BlockWenckebach • Sinus Node initiates impulses; delayed in AV Node; One is finally blocked • R-R irregular. R-R interval gets progressively shorter as PRI gets longer • Rate: Usually a little slower than normal • PRI: PR gets longer, until one P Wave is not followed by QRS. Repeats cycle. • QRS: Less than .12 seconds

  14. Third Degree Heart BlockComplete HB • Complete block at AV Node. Atria and Ventricles function separately • P-P & R-R intervals are regular. • Atrial rate - normal. Ventricular rate slower • P Waves: Upright & Uniform - More P Waves than QRS complexes • PRI: There is no PRI • QRS: Depends on foci

  15. Premature Ventricular Contraction • Irritable focus within the ventricles • The underlying rhythm can be reular or irregular • Rate: Underlying rhythm • P Waves: The ectopic is not preceeded by a P Wave • PRI: No PRI • QRS: Wide and bizarre

  16. PVC’s • QRS: at least .12 seconds. T Wave frequently in the opposite direction from QRS • > 6 per minute • Two PVC’s - Couplet • Bigeminy, Trigeminy • Multifocal PVC’s

  17. Idioventricular Rhythm • Ventricles initiate a regular impulse at 20-40 bpm • The rhythm is usually regular, it can slow as the heart dies • Rate: 20-40 bpm • No P Waves • No PRI • QRS - Wide and bizarre at least .12

  18. Ventricular Tachycardia • Irritable focus in Ventricles • Usually regular • Rate: Atrial rate cannot be determined; Ventricular rate 150-250 bpm • P Waves: No P Waves with QRS’ • PRI: No PRI • QRS: Wide & bizarre, measuring at least .12 seconds.

  19. Ventricular Fibrillation • Multiple foci in ventricles become irritable; heart starts to fibrillate rather than contract • Regularity: Totally chaotic • Rate: Cannot be determined • P Waves: No discernible P Waves • PRI There is no PRI • QRS: No QRS complexes

  20. Asystole • The heart has no electrical activity • Check the leads!!!! • Only a straight line

More Related