Table 1.

Surveillance strategy with systematic high-quality AF-screening

Study	Size	AF-screening	Device (n)	AF < 1 m	AF ≥ 1 m
Burow et al. (2008) [19]	110	ELR 3 and 6 m	Amplatzer PFO (40)	nd	6 (15%)
Bonvini et al. (2010) [7]	143	Holter/ELR 0, 6 and 12 m	Most suitable (92)	6 (6,5%)	3 (3,3%)
Ates et al. (2015) [23]	47	Holter 0, 6 m	Amplatzer PFO (34), Occlutech Figulla (13)	2 (4,2%)	0
Leclercq et al. (2021) [11]	62	Holter 0, 1, 6 m	Amplatzer PFO (42), Amplatzer Cribiform (15), Occlutech PFO (5)	3 (4,8%)	0

AF atrial fibrillation, ELR external loop recorder, m month, nd not done