Non-invasive assessment of atrial electrophysiology in AF – Influence of posture change

Carl Meurling, K Hnatkova, J E P Waktare, H Nagayoshi, T Janota, A J Camm, M Malik

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

The authors sought to non-invasively defect changes in atrial fibrillation rhythm during autonomic provocative maneuvers. Digital Holter from 23 patients with chronic AF before and after active postural change were subjected to routine editing, and then underwent QRS and T wave subtraction, leaving pure atrial fibrillatory records. Spectral analysis by autoregressive method was performed on this record. The total spectral power, and that in the 4-10 Hz range was calculated and compared before and after posture change. Analysable data was acquired front 17 patients. Postural change caused a fall in spectral power (total power: from 19442 to 8154, 4-10 Hz power: 4031 to 1764), and a concentration of the power in the 4-10 Hz range. Increased sympathetic tone due to active postural change causes a fall in total spectral power and a concentration of that power in the AF frequency band. Atrial electrophysiology during AF can be studied noninvasivel.
Original languageEnglish
Title of host publicationComputers in Cardiology
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages637-640
Number of pages4
Volume25
ISBN (Print)0-7803-5200-9
DOIs
Publication statusPublished - 1998
Externally publishedYes
EventComputers in Cardiology 1998. Annual conference of computers in cardiology - Cleveland, OH
Duration: 1998 Sep 131998 Sep 16

Publication series

Name
Volume25

Conference

ConferenceComputers in Cardiology 1998. Annual conference of computers in cardiology
Period1998/09/131998/09/16

Subject classification (UKÄ)

  • Cardiac and Cardiovascular Systems

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