1
|
Padmanabhan D, Sugrue A, Vaidya V, Witt C, Yasin O, Naksuk N, Killu A, Foxall T, Drakulic BS, Venkatachalam KL, Asirvatham SJ. Incremental benefit of a novel signal recording system during mapping and ablation. Europace 2021; 23:130-138. [PMID: 33094311 DOI: 10.1093/europace/euaa194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 08/10/2020] [Indexed: 11/14/2022] Open
Abstract
AIMS Current electrophysiology signal recording and mapping systems have limited dynamic range (DR) and bandwidth, which causes loss of valuable information during acquisition of cardiac signals. We evaluated a novel advanced signal processing platform with the objective to obtain and assess additional information of clinical importance. METHODS AND RESULTS Over 10 canines, we compared intracardiac recordings within all cardiac chambers, in various rhythms, in pacing and during radiofrequency (RF) ablation across two platforms; a conventional system and the PURE EP™ [(PEP); Bio Sig Technologies, Inc., Los Angeles, CA, USA]. Recording cardiac signals with varying amplitudes were consistently and reproducibly observed, without loss of detail or introduction of artefact. Further the amplitude of current of injury (COI) on the unipolar signals correlated with the instantaneous contact force (CF) recorded on the sensing catheter in all the animals (r2 = 0.94 in ventricle). The maximum change in the unipolar COI correlated with the change in local electrogram amplitude during non-irrigated RF ablation (r2 = 0.61 in atrium). Reduction in artefact attributable to pacing (20 sites) and noise during ablation (48 sites) was present on the PEP system. Within the PEP system, simultaneous display of identical signals, filtered differently, aided the visualization of discrete conduction tissue signals. CONCLUSION Compared to current system, the PEP system provided incremental information including identifying conduction tissue signals, estimates of CF and a surrogate for lesion formation. This novel signal processing platform with increased DR and minimal front-end filtering may be useful in clinical practice.
Collapse
Affiliation(s)
- Deepak Padmanabhan
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Alan Sugrue
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Vaibhav Vaidya
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Chance Witt
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Omar Yasin
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Niyada Naksuk
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Ammar Killu
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | | | | | | | - Samuel J Asirvatham
- Department of Cardiovascular Diseases, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| |
Collapse
|
2
|
ALMENDRAL JESÚS. Resetting and Entrainment of Reentrant Arrhythmias: Part II: Informative Content and Practical Use of These Responses. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2013; 36:641-61. [DOI: 10.1111/pace.12075] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 11/24/2012] [Indexed: 11/27/2022]
Affiliation(s)
- JESÚS ALMENDRAL
- From the Cardiac Arrhythmia Unit; Grupo Hospital de Madrid; Universidad CEU-San Pablo; Madrid; Spain
| |
Collapse
|