Ectopic Supraventricular Rhythms

Many of these rhythms are asymptomatic and do not require therapeutic measures. Different rhythms are the result supraventricular (atrial usually) foci.

Ectopic supraventricular rhythms include

Many of these rhythms are asymptomatic and do not require therapeutic measures. Different rhythms are the result supraventricular (atrial usually) foci. Ectopic supraventricular rhythms include supraventricular premature atrial tachycardia multifocal atrial tachycardia junctional Nichtparoxysmale Wandering atrial pacemaker supraventricular premature supraventricular premature beats (PAC) or premature supraventricular contractions (PAC, premature atrial contractions) are episodic pulses that are found in many people. They can occur with or without precipitating factors, such as coffee, tea, alcohol or Pseudoephidrin or it can be a sign of a cardiopulmonary disease even with normal heart function. They are common in patients with COPD. Occasionally they cause palpitations. The diagnosis results from the ECG (supraventricular extrasystole (PAC).). Supraventricular extrasystole (PAC). Lead II the T-wave is deformed by a PAC in accordance with the second stroke from the sinus node. Since the PAC occurs relatively early during sinus cycle, the sinus node rhythm reset and a break-less than fully compensatory-precedes the next sinus beat. PACs can normally abberant or not be transferred and are usually followed by a non-compensatory pause. PACs that are aberrant line (usually with the morphology of right bundle branch block) led, must be distinguished from premature ventricular origin. Atrial premature beats arise due to ectopic atrial beats that may occur singly or multiply after long sinus pauses or sinus arrest. Replacement punches of a single focus can produce a continuous rhythm (so-called. Ectopic atrial rhythm). Here, the heart rate is usually lower, typically changes the morphology of the P wave and the PR interval is slightly shorter than that of a sinus rhythm. The atrial atrial tachycardia is a regular rhythm caused by the consistent, rapid atrial activation by a single atrial focus. The heart rate is usually between 150 to 200 beats / min. However, with a very high atrial rate, a node dysfunction or AV block of digitalis may be associated and this results in a slower ventricular rate. These include enhanced atrial automaticity and intra-atrial reentrant mechanism. The atrial tachycardia is the rarest form (5%) of supraventricular tachycardias, which usually occurs in patients with a structural heart disease. Among the other causes include atrial irritation (eg., By a pericarditis), drugs such as digitalis, alcohol and inhalation of toxic gases. The symptoms are similar to those of other Tachykardieformen. The diagnosis results from the ECG. The QRS complexes P-waves precede that differ morphologically from the P-waves of a normal sinus rhythm. However, you can in the previous T wave hiding his (True atrial tachycardia.) True atrial tachycardia. This tachycardia with narrow QRS complexes has its origin in an abnormal auto-focus or an intra-atrial reentrant mechanism. The QRS complexes P-waves precede. There is usually a long RP tachycardia (PR RP present) when the AV nodal conduction is slow. By vagus stimulation, it may be possible to reduce the heart rate. This makes it possible to detect hidden P-waves. However terminate such maneuvers are generally not the arrhythmia (and show that the AV node is not an obligate part of Arrhythmiekreises). The treatment includes the elimination of the causes and the reduction of ventricular rate with beta-blockers or calcium channel blockers. The episode of atrial tachycardia can be terminated with a Gleichstromkardioversion. Among the drugs for termination and prevention of atrial tachycardia include antiarrhythmic agents of Class Ia, Ic or III. Show this non-invasive measures, however, no effect, remain as an alternative the overdrive pacing and RF ablation. Multifocal atrial tachycardia The multifocal atrial tachycardia (chaotic atrial tachycardia) is an aperiodic irregular rhythm caused by chaotic electrical discharge mulipler ectopic Vorhoffoci. The heart rate is defined as> 100 beats / min. With the exception of heart rate characteristics are the same as when wandering atrial pacemaker. The symptoms are, when they occur, which tachycardia with high frequencies. Treatment depends on the underlying lung disease. Junctional tachycardia Nichtparoxysmale The nichtparoxysmale junctional tachycardia is caused by an abnormal automaticity in the AV node or the adjacent tissue, which typically develops following cardiac surgery open heart following an acute inferior myocardial infarction, myocarditis or after a digitalis. The heart rate is between 60 to 120 beats / min. Therefore, the patients do not show symptoms usually. The ECG regular, normal designed QRS complexes exhibit no detectable P-waves or with retrograde P-waves (in the inferior leads inverted) that appear just before (<0.1 s) or after the QRS complex. The rhythm is distinguished by the lower heart rate and its gradual beginning and its gradual end of paroxysmal supraventricular tachycardia. The treatment is aimed at eliminating the causes. Wandering atrial pacing The wandering atrial pacemaker (multifocal atrial rhythm) is an aperiodic irregular rhythm caused by chaotic electrical discharge mulipler ectopic Vorhoffoci. The heart rate is defined as ? 100 beats / min. These arrhythmias typically found in patients with pulmonary disease with hypoxia, acidosis or Theophillinintoxikation or a combination of the three aforementioned symptoms. The ECG shows a beat to beat varying morphology of the P-wave of ? 3 different morphologies. The presence of P waves distinguishes wandering atrial pacemaker from atrial fibrillation.

Health Life Media Team

Leave a Reply