1 / 19

Arrhythmias and EKGs

Outline. Sinus Arrhythmia and Sick Sinus SyndromeMultifocal Atrial TachycardiaBigeminal RhythmsPreexcitation and AVRT. Mechanisms of Arrhythmogenesis. Sinus Arrhythmia. EKG Characteristics:Presence of sinus P wavesVariation of the PP interval which cannot be qattributed to either SA nodal block or PACsWhen the variations in PP interval occur in phase with respiration, this is considered to be a normal variant. When they are unrelated to respiration, they may be caused by the same 197

lotus
Download Presentation

Arrhythmias and EKGs

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. Arrhythmias and EKGs Part 2

    2. Outline Sinus Arrhythmia and Sick Sinus Syndrome Multifocal Atrial Tachycardia Bigeminal Rhythms Preexcitation and AVRT

    3. Mechanisms of Arrhythmogenesis

    4. Sinus Arrhythmia

    5. Sick Sinus Syndrome Characterized by a collection of symptoms and ECG findings due to chronic dysfunction of the sinoatrial (SA) node: Chronic and severe sinus bradycardia Sinus pauses Sinus arrhythmia Complete sinus arrest Progressive development of atrial arrhythmias (a-flutter, a-fib, atrial tachycardia) Patients are usually elderly and present with lightheadedness and/or syncope, but it can also manifest as angina, dyspnea, and palpitations. About 50% of people with SSS also display some degree of dysfunction of the AV node

    6. Sick Sinus Syndrome

    7. Etiologies of Sick Sinus Syndrome

    8. Tachycardia-Bradycardia Syndrome Common variant of sick sinus syndrome severe bradycardia alternates with paroxysmal tachycardias, most often atrial fibrillation. There is usually a prolonged pause in the cardiac rhythm following cessation of the tachyarrhythmia.

    9. Tachycardia-Bradycardia Syndrome

    10. Multifocal Atrial Tachycardia

    11. Bigeminal Rhythms Arrhythmias in which each normal sinus beat is followed by a premature contraction (PAC, PJC, or PVC). Results in a couplet rhythm which can be detected by pulse or auscultation. Generally benign

    12. Atrial Bigeminy

    13. Ventricular Bigeminy

    14. Preexcitation

    15. AV Reentrant Tachycardia (AVRT) In patients with WPW, a reentrant rhythm can be generated where the AV node serves as one arm of the reentrant circuit, and the accessory pathway as the other.

    16. Types of AVRT Orthodromic AVRT (More common) Narrow complex tachycardia in which the wave of depolarization travels down the AV node and retrograde up the accessory pathway. Antidromic AVRT (Less common) Wide complex tachycardia in which the wave of depolarization travels down the accessory pathway and retrograde up the AV node.

    17. Mechanism of orthodromic AVRT

    18. Mechanism of antidromic AVRT

    19. What is this arrhythmia?

    20. Classification Scheme for Arrhythmias

More Related