Nov 3, 2010

"Zone of avoidance": RR interval distribution in tachograms, histograms, and Poincaré plots of a Boxer dog

Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology
N Sydney MoïseNiels F Otani

Abstract

The RR intervals of sinus and ventricular beats were determined by analysis of a 24-h ambulatory electrocardiogram in a Boxer before and after treatment with sotalol. These RR intervals were plotted using tachograms, histograms, and Poincaré plots. The tachogram demonstrated a 'band' wherein a range of RR intervals was infrequent, the histogram did not take the form of a single Gaussian distribution of RR intervals, and the Poincaré plot showed nonhomogeneous beat-to-beat variability. This type of patterning was described as a "zone of avoidance" potentially caused by the clustering of beats within specific ranges. Treatment with sotalol enhanced the "zone of avoidance". Further investigation is needed to understand the mechanism for this observation as well as any clinical implications.

  • References10
  • Citations1

Citations

Mentioned in this Paper

Sinoatrial Node
Dog Diseases
Complex (molecular entity)
Electrocardiography, Ambulatory
Transcription Initiation
Sotalol
Sinus - General Anatomical Term
Etiology
Holter Electrocardiography
Cardiac Depressants

Related Feeds

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

Related Papers

Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc
Hans D EspererRichard J Cohen
Progress in Biophysics and Molecular Biology
Peter Taggart, Max Lab
© 2020 Meta ULC. All rights reserved