Abstract Background When Embolic Stroke of Undetermined Source (ESUS) is investigated with an Implanted Loop Recorder (ILR), Atrial Fibrillation (AF) may be detected in about 25%. In Ireland this is usually undertaken by a cardiology service. Non-traditional implanters are now well accepted, though few stroke physicians perform this service. Understanding the expected numbers and workload will allow service planning. Methods The study is a prospectively cohort at a model 3 institution. A stroke physician and CNS-provided implant service was initiated in 2017. The Irish National Audit of Stroke and Hospital Inpatient Enquiry was used estimate the numbers of infarcts. The hospital patient management system was used to evaluate the follow-up provided per case. Consultant time was calculated at 45, 30, 30 and 20 mins per implant, explant, in-person review and tele review respectively. CNS time was calculated at 60 and 45 mins per implant and explant. Descriptive statistics were used. Results Between March 2017 and February 2024, a total of 63 ILR (Reveal LINQ, Medtronic) were implanted by the team, of which 58 were for ESUS; mean age at implant 66.4 years, 39.6% female. Implants as a proportion of the total infarcts in the years 2017-2023 was 6.51%; range from 3.1-9.9%. Excluding the disrupted Covid years and 1st year the average was 8.8%. Of the implants, 34 (60.3%) have been explanted to date. The total median (IQR) time per implant was 120 (100-150) mins and 105 (60-105) mins for consultant and CNS respectively [145 and 105 mins respectively for explanted (completed) cases]. AF has been identified in 17 cases to date (29.3% of implants). Conclusion Implementing an ILR service requires about 2hours of consultant time and 1hour 05 mins of CNS time per case. Expected numbers of implants can be estimate at 8-10% of all infarcts, and a considerable proportion will have AF detected.