Paroxysmal Supraventricular Tachycardia (PSVT)Broad category for rapid rhythms originating outside of the ventricles that occur suddenly; rapid supraventricular rhythms include sinus tachycardia, junctional tachycardia, atrial tachycardia, atrial fibrillation with fast response and atrial flutter with fast response. 1. Six Second ECG Guidebook (2012),...:
Broad category for rapid rhythms originating outside of the ventriclesThe larger chambers of the heart (3 times the volume and muscle thickness than the atria), responsible for the pumping of blood to the lungs and the rest of the body. that occur suddenly; rapid supraventricularLocated above the ventricle – includes the bundle of His, AV node, atria and the SA node. 1. Six Second ECG Guidebook (2012), T Barill, p. 206 rhythms include sinus tachycardiaA cardiac rhythm that originates from the SA node with rates most often 101-180/minute. sinus tachycardia, HR 138/min 1. Six Second ECG Guidebook (2012), T Barill, p. 104, 206, junctional tachycardiaA cardiac rhythm that originates from the AV junction with a rate > 100/minute; QRS complex is most often narrow with P waves that are absent or inverted; PR interval is often short. junctional tachycardia, HR 158 1. Six Second..., atrial tachycardiaA fast rhythm with rates commonly 150-240/minute; QRS complex is most often narrow; rhythm is usually generated from a re-entry loop – often making use of an accessory bundle and the AV node. 1. Six Second ECG Guidebook (2012), T Barill, p. 191, atrial fibrillationOne of the most common dysrhythmias, the atria have a host of sites that are concurrently firing at a combined rate of 350-600/minute; since the junction allows maximum 240 impulses through per minute, the result is a chaotic rhythm most... with fast response and atrial flutterA rapid atrial rhythm (approximately 300/minute in the atria) caused by a re-entry loop within the atria; since the junction is unable to conduct 300 impulses/ minute (max=240), the junction often allows every 2nd, 3rd, or 4th impulse through; resulting... with fast response.
If a patient is in supraventricular tachycardiaA cardiac rhythm with a rate above 100/minute; for example, if the impulse originates from the atria with a rate of 160/minute, the rhythm is called an atrial tachycardia. A cardiac rhythm is usually named first by the location of... with a heart rateThe number of QRS complexes per minute; note that HR may not equal perfused pulse rate. See also: - Step 1 Heart Rate - Rate - Rule of 300s (Triplicate Method) - Six Second Count - The Caliper Method 1.... close to 150/minute, always consider the possibility that the rhythmOften refers to a discernible pattern in time or distance between QRS complexes and/or P waves. is atrial flutter with a 2:1 block. Failure to detect this rhythm can lead to serious complications for those with Woolf-Parkinson-WhitePre-excitation syndrome characterized by the early depolarization of the ventricle(s) via an accessory pathway (other than the AV junction) resulting in an early initiation of a QRS and possibly a Delta wave; due to the presence of the accessory pathway,... syndrome or occasionally for those who have been in atrial flutter for more than 48 hours (risk of emboli).
1. Six Second ECG GuidebookA Practice Guide to Basic and 12 Lead ECG Interpretation, written by Tracy Barill, 2012 Introduction The ability to correctly interpret an electrocardiogram (ECG), be it a simple six second strip or a 12 lead ECG, is a vital skill... (2012), T Barill, p. 124