1 / 60

Basic rhythm analysis Prepared by Ms.SFK

Basic rhythm analysis Prepared by Ms.SFK. By the end of the presentation learners will be able to Define the term electrocardiography, electrocardiogram, and electrocardiograph Explore placement of ECG electrodes Develop understanding about ECG graph paper

channer
Télécharger la présentation

Basic rhythm analysis Prepared by Ms.SFK

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. Basic rhythm analysis Prepared byMs.SFK

  2. By the end of the presentation learners will be able to • Define the term electrocardiography, electrocardiogram, and electrocardiograph • Explore placement of ECG electrodes • Develop understanding about ECG graph paper • Identify relationship between conducting system and PQRST complex • Discuss steps of reading rhythm strips Objectives

  3. Conduction System and PQRST Complex Ventricular depolarization Ventricular contraction Ventricular diastole Atrial depolarization Atrial contraction Atrial diastole

  4. Conduction System and PQRST Complex Atrial rate 60-80 Below ventricles 20-40 Ventricular rate 40-60

  5. ECG paper

  6. Represents atrial depolarization. • Usually 2.5mm or less in height and 0.11second or less in duration. • Upright P Wave

  7. Represents ventricular depolarization • Q wave is first negative deflection and less than 0.03 sec and less than 25% of R wave amplitude. • R wave is first positive deflection • S wave is first negative deflection after R wave • QRS duration is 0.04-0.10secs QRS

  8. Ventricular re polarization. • U wave may indicate electrolyte abnormality. It is thought to be result of slow re polarization of intra ventricular conduction system. T and U waves

  9. Represents early re polarization of the ventricles PR interval • Represents time required for the impulse to travel from atria and conduction system to purkkinje fibers. • PR interval ranges from 0.12-0.20 secs. ST segment

  10. Represents electrical systole • Is usually half of the RR interval • 0.32-0.40 sec if heart rate is 65-95min. • QT interval varies with heart rate therefore QTc should be calculated. • QTc should not exceed 0.42 sec in men and 0.43 sec in women. QT interval

  11. Systematic approach to rhythm strip analysis • Rate (atrial and ventricular rate) • Rhythm (PP.RR interval) • Interval • PR • QRS • QT

  12. Determination of Heart rate • 6 sec method • Count down method

  13. PP or RR interval Determination of rhythm

  14. PR,QRS,QT interval

  15. SA Node • Atria • AV node/ junction • Ventricles Arrhythmias

  16. Normal Sinus Rhythm • Rate (60-100/min) atrial and ventricular rates are equal and every p has QRS. • Rhythm (regular) • Intervals normal Dysrhythmias of SA nodes

  17. Sinus Bradycardia

  18. Sinus Tachycardia HR 100-160

  19. Sinus Arrest:

  20. SinusArrhythmia:

  21. Wandering pace maker

  22. Atrial dysrhythmias

  23. PAC (Premature atrial contraction Earlier than expected P waves — morphology of premature P wave usually differs from the sinus P. • Atrial P wave often falls near the T wave and distorts it — P is flat, notched, or lost in the T in at least one lead. • PR interval is usually normal. • Rhythm is regular except for the premature contraction

  24. Impulse from atrial ectopic foci P wave sawtoothed, QRS complex narrow, atrial rate 250-350, Atrial Flutter

  25. Atrial and ventricular rate and rhythm are irregular Atrial rate 350-500 Multiple impulses generate from atria (ectopic foci) Atrial Fibrillation

  26. In this arrhythmia, atrial tachycardia occurs with numerous atrial foci firing intermittently. • MAT produces varying P waves on the Strip and occurs most often in patients with chronic pulmonary disease Multifocal Atrial Tachycardia (MAT)

  27. Atrial Rate: 100 to 250 beats/minute • Ventricular Rate: > 160 • P wave: Three different Shapes • Rhythm: Both irregular • PR interval: Varies

  28. Junctionalrhythm

  29. Premature Junctional Contraction

More Related