Table 1.

FDO outcomes in the three centres

	Site 1 Cantonal Hospital, Aarau	Site 2 Clinique de Carouge SA	Site 3 Neurocentre Bellevue	Total
Total number of patients undergoing FDO	58	17	61	136
Patients with no FDO events (n)	57	16	57	130
Patients discharged at 6 hours (n)	57	16	59	132
Patients requiring extended observation after 6 hours (n)	1a	0	0	1
Patients requiring observation on 2nd day (n)	0	1b	2c	3
Symptomatic patients (n)	0	0	2d	2
Patients with ECG Abnormalities (n)	1a	1b	2c	4
1st degree AV Block (n)	0	0	2c	2
2nd degree AV Block Type I (Wenkebach) (n)	1a	1b	0	2
2nd degree AV Block Type II (Mobitz Type II) (n)	0	0	0	0
Symptomatic events that resolved by the end of 6 h observation (n)	0	0	2d	2
ECG events that had resolved at extended observation or follow-up examination on the 2nd day (n)	1a	1b	2c	4

^a2nd degree AV block, Wenkebach type: extension of observation by 1 h and repeat of ECG; AV block had resolved.

^b2nd degree AV block, Wenkebach type: 24 h Holter ECG as a precautionary measure; AV block had resolved and no further finding observed on Holter ECG.

^c1st degree AV blocks: patients were asked to return to the practice the next day for a single ECG; AV block had resolved.

^d1 patient with vertigo-like sensation, 1 patient with palpitations (HR in normal range 74 bpm): symptoms had resolved for both patients by the end of the 6 h observation.

AV, atrioventricular; HR, heart rate; bpm, beats per minute.