scholarly journals A prospective evaluation of the impact of individual RF applications for slow pathway ablation for AVNRT: markers of acute success

2021 ◽  
Author(s):  
Hariharan Sugumar ◽  
David Chieng ◽  
Sandeep Prabhu ◽  
Aleksandr Voskoboinik ◽  
Robert D Anderson ◽  
...  
Keyword(s):  
Slow Pathway ◽  
Prospective Evaluation ◽  
Slow Pathway Ablation ◽  
Acute Success ◽  
Rf Applications ◽  
The Impact

scholarly journals A prospective evaluation of the impact of individual RF applications for slow pathway ablation for AVNRT: markers of acute success

2020 ◽  
Author(s):  
Hariharan Sugumar ◽  
David Chieng ◽  
Sandeep Prabhu ◽  
Aleksandr Voskoboinik ◽  
Robert Anderson ◽  
...  
Keyword(s):  
Prospective Observational Study ◽  
Slow Pathway ◽  
Junctional Rhythm ◽  
Significant Difference ◽  
Acute Success ◽  
History Of ◽  
Rf Applications ◽  
Procedural Success ◽  
The Impact

Background: Catheter ablation is highly effective for AVNRT. Generally junctional rhythm(JR) is an accepted requirement for successful ablation however there is a lack of detailed prospective studies to determine the characteristics of JR and the impact on slow pathway conduction. Methods: Multicentre prospective observational study evaluating the impact of individual radiofrequency(RF) applications in typical AVNRT(Slow/Fast). Characteristics of JR during ablation were documented and detailed testing was performed after every RF application to determine outcome. Procedural success was defined as ≤1 AV nodal echo. Results: Sixty-seven patients were included(mean age 53±18years, 57% female and a history of SVT 2.9±4.7years). RF(50w,60degrees) ablation for AVNRT was applied in 301 locations with JR in 178(59%). Successful slow pathway modification was achieved in 66(99%) patients with slow pathway block in 30(46%). Success was associated with JR in all patients. Success was achieved in 6 patients with RF<10 seconds. There was no significant difference in the CL of JR during RF between effective(587±150ms) vs ineffective (611±193ms,p=0.4) applications. Inadvertent JA-block with immediate termination of RF was observed in 19(28%) patients with AVNRT no longer inducible in 14(74%). Freedom from SVT was achieved in 66(99%) patients at a mean follow up of 15±6 months. Conclusion: In this prospective study, JR was required during RF for acute success in AVNRT. Cycle length of JR during RF was not predictive of success. Unintended JA block during faster JR was associated with slow pathway block. RF applications as short as 10s resulting in junctional rhythm may be successful in some patients.

Rapid evaluation of FDG imaging alternatives using head-to-head comparisons of full ring and gamma camera based PET scanners –

2002 ◽  
Vol 41 (05) ◽  
pp. 208-213 ◽  
Author(s):  
L. M. Haslinghuis-Bajan ◽  
L. Hooft ◽  
A. van Lingen ◽  
M. van Tulder ◽  
W. Devillé ◽  
...  
Keyword(s):  
Methodological Quality ◽  
Gamma Camera ◽  
First Generation ◽  
Prospective Evaluation ◽  
First Approximation ◽  
Variable Head ◽  
Malignant Lesions ◽  
The Impact ◽  
Pet Scanners

SummaryAim: While FDG full ring PET (FRPET) has been gradually accepted in oncology, the role of the cheaper gamma camera based alternatives (GCPET) is less clear. Since technology is evolving rapidly, “tracker trials” would be most helpful to provide a first approximation of the relative merits of these alternatives. As difference in scanner sensitivity is the key variable, head-to-head comparison with FRPET is an attractive study design. This systematic review summarises such studies. Methods: Nine studies were identified until July 1, 2000. Two observers assessed the methodological quality (Cochrane criteria), and extracted data. Results: The studies comprised a variety of tumours and indications. The reported GC- and FRPET agreement for detection of malignant lesions ranged from 55 to 100%, but with methodological limitations (blinding, standardisation, limited patient spectrum). Mean lesion diameter was 2.9 cm (SD 1.8), with only about 20% <1.5 cm. The 3 studies with the highest quality reported concordances of 74-79%, for the studied lesion spectrum. Contrast at GCPET was lower than that of FRPET, contrast and detection agreement were positively related. Logistic regression analysis suggested that pre-test indicators might be used to predict FRPET-GCPET concordance. Conclusion: In spite of methodological limitations, “first generation” GCPET devices detected sufficient FRPET positive lesions to allow prospective evaluation in clinical situations where the impact of FRPET is not confined to detection of small lesions (<1.5 cm). The efficiency of head-to-head comparative studies would benefit from application in a clinically relevant patient spectrum, with proper blinding and standardisation of acquisition procedures.

Ventricular Rate During Atrial Fibrillation Before and After Slow-Pathway Ablation

Circulation ◽  
1996 ◽  
Vol 94 (5) ◽  
pp. 1023-1026 ◽  
Author(s):  
S. Adam Strickberger ◽  
Raul Weiss ◽  
Emile G. Daoud ◽  
Rajiva Goyal ◽  
Frank Bogun ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Ventricular Rate ◽  
Slow Pathway ◽  
Slow Pathway Ablation ◽  
Before And After

Effect of Slow Pathway Ablation on Ventricular Rate During Atrial Fibrillation

Circulation ◽  
1996 ◽  
Vol 93 (2) ◽  
pp. 277-283 ◽  
Author(s):  
Gerhard Kreiner ◽  
Gottfried Heinz ◽  
Peter Siostrzonek ◽  
Heinz David Gössinger
Keyword(s):  
Atrial Fibrillation ◽  
Ventricular Rate ◽  
Slow Pathway ◽  
Slow Pathway Ablation

scholarly journals Slow pathway ablation in patients with atrioventricular node reentrant tachycardia and a prolonged PR interval

1994 ◽  
Vol 24 (4) ◽  
pp. 1064-1068 ◽  
Author(s):  
Jasbir S. Sra ◽  
Mohammad R. Jazayeri ◽  
Zalmen Blanck ◽  
Sanjay Deshpande ◽  
Anwer A. Dhala ◽  
...  
Keyword(s):  
Atrioventricular Node ◽  
Slow Pathway ◽  
Reentrant Tachycardia ◽  
Slow Pathway Ablation ◽  
Pr Interval ◽  
Atrioventricular Node Reentrant Tachycardia
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