ArticleJournal of arrhythmia2026
Anatomical Predictors of Optimal Cryoballoon Size Selection: A Prospective Comparison of 28 mm Versus 31 mm Size-Adjustable Balloon Modes.
Article in Journal of arrhythmia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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
1 citing paper in PubMed.
- Three-Dimensional Left Atrial Geometry in Atrial Fibrillation: Imaging Biomarkers, Substrate Phenotyping, and Ablation Outcome Prediction.Diagnostics (Basel, Switzerland) · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Complete pulmonary vein (PV) occlusion is critical for successful cryoballoon ablation. The POLARx FIT size-adjustable cryoballoon adjusts diameter from 28 to 31 mm. This study aimed to compare PV occlusion grades between balloon modes and identify anatomical predictors for optimal size selection. Methods: This prospective study included 150 consecutive patients undergoing cryoballoon ablation for atrial fibrillation. PV occlusion was assessed using contrast injection (Grades I-IV) for both balloon sizes before ablation. Pre-procedural computed tomography measurements included PV dimensions, ovality index, trunk length, and PV angles in frontal and transversal planes. Generalized Estimating Equations analysis accounted for within-patient correlation. Results: Complete occlusion in all four PVs was achieved in 106/150 patients (70.7%) with 31 mm versus 85/150 (56.7%) with 28 mm mode ( Conclusion: The 31 mm mode significantly improves occlusion rates, particularly in superior PVs, while 28 mm is adequate for inferior PVs. Larger PV diameter and higher ovality index predict incomplete occlusion, supporting preferential use of 31 mm mode for larger, more oval PVs. Validation in multicenter cohorts is required.
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.