3.4 Time relationship between arrhythmogenic diagnosis and time
of monitoring
Cumulative diagnostic yield of ILR among patients with syncope is given
in figure 4. The cumulative diagnostic yield for arrhythmogenic event
explaining syncope was 15,7%, 22,9%, 34,9% , 54,2%, 72,3% and 100%
at 1, 2, 6, 12, 24 and 48 months respectively. After 43months, a plateau
in diagnostic yield could be observed, with the last arrhythmogenic
diagnosis made at 43 months of follow-up. The mean time to diagnosis was
10 [2-25] months. Among patients with an arrhythmogenic diagnosis
(n=83), this diagnosis was established in 15.7% of patients in the
first month, 7.2% in the second month 4.8% in the third month, 8.4%
in the period between 3 and 6 months, 19.2% in the period between 6
months and 1 year, 16.8% in the second year, 17.5% in the third year
and finally 10.4% in the fourth year. Of all arrhythmogenic episodes,
90% were diagnosed within 3 years of ILR monitoring.