Atrial tachycardia rhythm strip

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Welcome to our Tachycardia Reference Page. This page provides a summary definition followed by introductions to our practice drills, quizzes, lessons and interactive guides. Tachycardia is a rapid, above normal, heart rate when the subject is at rest.

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While atrial fibrillation represents the most common cause of irregular tachycardia, the differential diagnosis includes several other possibilities. Multifocal atrial tachycardia and any other supraventricular tachycardia SVT with variable atrioventricular AV conduction such as atrial tachycardia or atrial flutter with variable AV block can present as irregularly irregular rhythms. Sinus tachycardia with premature atrial contractions or premature ventricular contractions can also present as an irregular tachycardia.

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The journal, published sinceis the official publication of the Spanish Society of Cardiology and founder of the REC Publications journal family. Articles are published in both English an Spanish in its electronic edition. The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two receding years.

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There are two different rates that can be determined on an ECG. The atrial rate is indicated by the frequency of the P waves. The ventricular rate is indicated by the frequency of the QRS complexes.

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The rhythm is either sinus rhythm or not sinus rhythm. Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node. The first ECG strip below shows a P wave with sinus morphology, thus normal sinus rhythm.

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How would you interpret the rhythm in the figure below? What is your differential diagnosis? Can you be sure of your answer from looking at this lead MCL-1 rhythm strip?

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Wenkebach type block may also be observed. P wave shape depends on the site of atrial focus. ECG 1.

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I am sorry, but this site is only supported in an strict HTML compliant browser. The site may continue to function, but may not display properly. These are passive, protective beats originating from subsidiary pacemaker cells in the AV junction usually in the Bundle of His. The pacemaker's basic firing rate is bpm; junctional escapes are protective events that occur whenever the primary pacemaker i.

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Multifocal or multiform atrial tachycardia MAT is an abnormal heart rhythm[2] specifically a type of supraventricular tachycardiathat is particularly common in older people and is associated with exacerbations of chronic obstructive pulmonary disease COPD. Normally, the heart rate is controlled by a cluster of cells called the sinoatrial node SA node. Although these are interchangeable terms, some purists prefer the former nomenclature since it does not presume any underlying mechanism.

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This page provides an introduction to atrial rhythms and links to training materials on this website. Atrial rhythms originate in the atria rather than in the SA node. The P wave will be positive, but its shape can be different than a normal sinus rhythm because the electrical impulse follows a different path to the AV atrioventricular node.

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