Broad categoryA grouping or classification based on shared characteristics, helping to organize and make sense of information. A category is like a folder in a filing system, where similar items are grouped together for easy access. 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.
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. 202