Table 4.

Effect of patent foramen ovale closure on patients with visual aura

Follow-up	Group A (MH + aura)		Group B (MH unrelated to aura)		Group C (aura only)
	3-month follow-up	12-month follow-up	3-month follow-up	12-month follow-up	3-month follow-up	12-month follow-up
PFO closed (n)	67		8		5
Resolved	17 (25%)	35 (52%)	4 (50%)	6 (75%)	2 (40%)	4 (80%)
Improved	40 (60%)	16 (24%)	2 (25%)	0 (0%)	2 (40%)	0 (0%)
No change	3 (4.5%)	1 (1.5%)	1 (12.5%)	1 (12.5%)	0 (0%)	0 (0%)
Worse	4 (6.0%)	3 (4.5%)	1 (12.5%)	0 (0.0%)	0 (0%)	0 (0%)
Data unavailable	3 (4.5%)	12 (18%)	0 (0%)	1 (12.5%)	1 (20%)	1 (20%)

Abbreviations: MH, migraine headache; PFO, patent foramen ovale.