ArticlePacing and clinical electrophysiology : PACE2026
Interplay of Probe Stability and Oscillation During Very-High-Power Short-Duration Ablation in Pulmonary Vein Isolation for Atrial Fibrillation.
Article in Pacing and clinical electrophysiology : PACE, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundVery-high-power-short-duration (vHPSD) ablation is increasingly adopted for pulmonary vein isolation (PVI) in atrial fibrillation (AF). While inadequate catheter-tissue contact is known to impair lesion formation under fixed 90 W/4-s setting, independent role of probe stability versus rapid oscillatory motion has not been quantitatively defined.
objectiveTo evaluate the independent and interactive effects of contact force (CF), positional stability (PS/PSV), and oscillation (OS/OSV) on lesion biophysics during vHPSD ablation in vivo.
methodsWe retrospectively analyzed 80 consecutive AF patients undergoing PVI with a QDOT-MICRO catheter in vHPSD-mode (90 W/4-s, temperature-controlled). For each application (5198), CARTO3 trace data provided impedance, temperature, tip-to-tag distance, and CF (62.5Hz-sample). Stability parameters were defined as mean and variability of tip-to-tag distance (PS, PSV); oscillation parameters as mean and variability of tip velocity (OS, OSV). Primary endpoints were impedance drop (ID) and maximum temperature (Tmax). Mixed-effects regression models adjusted for baseline impedance, temperature, and CF; sensitivity analyses tested operator effect, and regional segments.
resultsMinimum CF (p < 0.001) and oscillation parameters (OS p < 0.001, OSV p = 0.004) were the strongest predictors of ID and Tmax, whereas stability parameters had attenuated effects after adjustment. Interactions showed that increasing PSV and OSV reduced ID and Tmax, especially under higher CF. Regional analysis confirmed modestly lower signals in posterior/inferior segments, but oscillation remained the main determinant.
conclusionOscillation, more than positional stability, is the primary motion determinant of lesion efficacy in vHPSD. Minimizing oscillation rather than increasing CF is key to optimizing energy delivery. Prospective studies should assess whether reducing oscillation improves long-term outcomes.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.