Cagin, Norman A.; Kunstadt, Dorothy; Levitt, Barrie
July 1976
Angiology;Jul/Aug1976, Vol. 27 Issue 7, p468
Academic Journal
The influence of atrial cycle length on the effective and functional refractory period of the human AV node and atrium is presented. In general, decrements in atrial cycle lengths resulted in a shortening of the refractory period of the atrium and the functional refractory period of the AV node. The effective refractory period of the AV node was not significantly prolonged. The physiologic significance of the effective and functional refractory periods of the AV node are discussed.


Related Articles

  • Long-term Outcomes in Individuals With Prolonged PR Interval or First-Degree Atrioventricular Block. Cheng, Susan; Keyes, Michelle J.; Larson, Martin G.; McCabe, Elizabeth L.; Newton-Cheh, Christopher; Levy, Daniel; Benjamin, Emelia J.; Vasan, Ramachandran S.; Wang, Thomas J. // JAMA: Journal of the American Medical Association;6/24/2009, Vol. 301 Issue 24, p2571 

    The article focuses on a study which examined the associations of electrocardiography PR interval with arrhythmic events and all-cause mortality to investigate the prognosis associated with first-degree atrio-ventricular block (AVB). 7575 participants from the Framingham Heart Study who...

  • Generation of realistic atrial to atrial interval series during atrial fibrillation. Climent, Andreu; Atienza, Felipe; Millet, Jose; Guillem, Maria // Medical & Biological Engineering & Computing;Nov2011, Vol. 49 Issue 11, p1261 

    The aim of the this study is to describe a methodological architecture for the generation of realistic atrial to atrial activation intervals (AA) during atrial fibrillation (AF), which can be used to investigate the role of the fibrillatory process in the ventricular response during AF. In this...

  • James fibers.  // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p1244 

    A definition of the term "James fibers" which refers to a pathway for conduction of cardiac impulses so as to bypass the atrioventricular node is presented.

  • Treatment of long-duration atrial fibrillation by modified maze procedure. Kumar, Pankaj; Athanasiou, Thanos; Stanbridge, Rex De L. // Journal of the Royal Society of Medicine;Nov2002, Vol. 95 Issue 11, p552 

    The article describes two cases of long-duration atrial fibrillation treated with modified maze procedure. The first case involves a 71-year-old man with rheumatic mitral disease and coronary disease and who has been in atrial fibrillation since the age of 22. The second case involves a...

  • Percutaneous Closure of Left Atrial Appendage vs Warfarin Therapy. Karpman, Harold L. // Internal Medicine Alert;10/15/2009, Vol. 31 Issue 19, p146 

    The efficacy of percutaneous closure of the LAA with the WATCHMAN® left atrial closure device was found to be non-inferior to that of standard warfarin therapy for prevention of stroke, cardiovascular death, and/or systemic embolism and, therefore, the device might provide an alternative...

  • Unmasked superoparaseptal pathway conduction due to atrial fibrillation in a patient with left ventricular dysfunction. Prochnau, Dirk; Surber, Ralf; Kuehnert, Helmut; Figulla, Hans R. // Herzschrittmachertherapie und Elektrophysiologie;Sep2013, Vol. 24 Issue 3, p191 

    We report the case of a 56-year-old woman with newly diagnosed atrial fibrillation (AF) and severe left ventricular (LV) dysfunction caused by rapid conduction via an accessory pathway (AP), mimicking left bundle branch block, as the first clinical manifestation of Wolff-Parkinson-White (WPW)...

  • Dissection of a Quantitative Trait Locus for PR Interval Duration Identifies Tnni3k as a Novel Modulator of Cardiac Conduction. Lodder, Elisabeth M.; Scicluna, Brendon P.; Milano, Annalisa; Sun, Albert Y.; Hao Tang; Remme, Carol Ann; Moerland, Perry D.; Tanck, Michael W. T.; Pitt, Geoffrey S.; Marchuk, Douglas A.; Bezzina, Connie R. // PLoS Genetics;Dec2012, Vol. 8 Issue 12, p1 

    Atrio-ventricular conduction disease is a common feature in Mendelian rhythm disorders associated with sudden cardiac death and is characterized by prolongation of the PR interval on the surface electrocardiogram (ECG). Prolongation of the PR interval is also a strong predictor of atrial...

  • LV FUNCTION IS PRESERVED IN PATIENT WITH A HISTORY OF AV NODE ABLATION AND PACING AT A MEAN FOLLOW UP OF 6 YEARS. Barry, J. P.; Nightingale, A. K.; Cripps, T. R. // Heart;May2004 Supplement 3, Vol. 90, pA16 

    Patients with history of AV node ablation and pacing and a contemporaneous echo were identified for a follow up study. 59 patients were identified, out of which 17 patients had died by the time of follow up . The cause of death was cardiovascular in 9, malignancy in 3, and unknown in 5. Of the...

  • Understanding Electrocardiography. Perry, Margaret // Practice Nurse;4/27/2012, Vol. 42 Issue 7, p26 

    This article gives information on electrocardiogram (ECG), an important tool for detecting and diagnosing heart disease. Many practice nurses routinely perform ECG as part of their daily workload. The test is described as a representation of the electrical activity of the heart muscle, and it is...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics