{
  "abstract": "Background The use of general anaesthesia (GA) in radiofrequency ablation (RFA) for atrial fibrillation (AF) has been shown to increase the rate of single procedure success and shorten procedure times compared with conscious sedation (CS). Additionally, high frequency jet flow ventilation (HFJV) is associated with lower AF recurrence rates compared with conventional ventilation. There is a paucity of data regarding the impact of sedation strategy on objective catheter stability and how this impacts outcomes.Objectives (1) To measure catheter stability by using the standard deviation (SD) of XYZ coordinates obtained in patients undergoing RFA for AF and (2) to compare catheter stability in CS, GA and GA+HFJV groups.Methods All patients who underwent AF ablation at our centre from April 2023 to June 2024 were eligible for inclusion in the study. Catheter stability was assessed using XYZ coordinates, which provide catheter tip positional data on 3 axes relative to a left atrial reference point, obtained via the CARTO 3 TM VisiTag module. Median SD of XYZ coordinates per lesion was used to determine catheter stability.Results 28 patients were included in the study, 8 in CS group, 10 in GA group and 10 in GA+HFJV group. GA demonstrated an improvement in catheter stability compared with CS (median (IQR)) (0.54 (0.3–0.89) vs 1.51 (0.95–2.3), p < 0.001). GA+HFJV demonstrated further improvement in catheter stability versus GA (0.47 (0.25–0.87), p = 0.017) ( figure 1), (table 1).Conclusion An incremental improvement in catheter stability, assessed using SD of XYZ coordinates, was seen across the different sedation strategies offered for AF RFA. The best catheter stability was achieved using GA+HFJV. Improvement in catheter stability across the three groups may account at least in part for the improved procedural outcomes seen with the use of GA and GA+HFJV when implemented for AF RFA.Abstract 36 Table 1Demonstrates the difference in XYZ parameters between the three groups. Data is presented as median (Interquartile range) or mean (± standard deviation) where appropriate. P values are presented comparing the GA versus CS group, and HFJV versus GA group respectively. CS = conscious sedation, GA = general anaesthesia, HFJV = high frequency jet ventilation, IQR = interquartile range, mm = millimetre, SD = standard deviationAbstract 36 Figure 1",
  "authors": [
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "L Byrne"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "L Maher"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "C Powell"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "L Helmi"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "G Crowe"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "W Costello"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "F Clifford"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "B Kelly"
    },
    {
      "affiliations": [
        "Cork University Hospital, Cork, Ireland"
      ],
      "name": "K Walsh"
    }
  ],
  "title": "36 The impact of sedation strategy on objective catheter stability in patients undergoing radiofrequency ablation for atrial fibrillation",
  "uid": "719bcb6e-c5c5-5a0e-8b59-fd62287d8715"
}