Residual flow may increase the risk of adverse events in patients received combined catheter ablation and transcatheter left atrial appendage closure for nonvalvular atrial fibrillation: a meta-analysis

Table 5 Subgroups of AF recurrence

Subgroup		Pool incidence (%)	95% CI (%)	P
All-cause mortality	≤Mean	2.60	[1.17–5.68]	0.66
All-cause mortality	>Mean	2.03	[0.91–4.45]
Embolism	≤Mean	2.92	[1.47–5.74]	0.04
Embolism	>Mean	6.80	[4.53–10.09]
Follow-up bleeding event	≤Mean	2.93	[0.98–8.44]	0.11
Follow-up bleeding event	>Mean	7.23	[5.10–10.16]
Follow-up residual flow	≤Mean	8.33	[4.68–14.40]	0.03
Follow-up residual flow	>Mean	21.65	[11.32–37.64]
Maximum residual flow	≤Mean	18.85	[10.67–31.11]	0.48
Maximum residual flow	>Mean	24.45	[14.42–38.59]

Mean, mean incidence rate of AF recurrence; AF atrial fibrillation, CI confidence interval