skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

43 Micra transcatheter pacing system implantation and outcomes in a single centre

Heart (British Cardiac Society), 2020-10, Vol.106 (Suppl 4), p.A28-A29 [Peer Reviewed Journal]

Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ. ;2020 Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ. ;ISSN: 1355-6037 ;EISSN: 1468-201X ;DOI: 10.1136/heartjnl-2020-ICS.43

Full text available

Citations Cited by
  • Title:
    43 Micra transcatheter pacing system implantation and outcomes in a single centre
  • Author: Connellan, D ; Brady, C ; Ryan, P ; Walsh, K ; Keaney, J
  • Subjects: Cardiomyopathy ; Congenital diseases ; Pacemakers ; Patients
  • Is Part Of: Heart (British Cardiac Society), 2020-10, Vol.106 (Suppl 4), p.A28-A29
  • Description: Introduction and ObjectivesTraditional cardiac pacemakers incorporate transvenous leads. Recently leadless pacemakers have been approved. The Micra™ pacemaker is such a device which is inserted percutaneously via the femoral vein into the right ventricle. The device is capable of providing single chamber pacing, sensing and accelerometer based rate response. Our objective was to evaluate indications, electrical parameters at insertion, complications and follow-up of 21 patients between 2017 and 2019 who underwent Micra™ pacemaker insertion at our institution.MethodsThis was a retrospective, observational study. All patients who had a Micra™ pacemaker insertion in MMUH between 2017 and 2019 were included. Patient data was extracted from electronic hospital records.Results21 patients (61.9% male) had a Micra pacemaker implanted (table 1). The mean age was 42.7 ± 17.7 years (range, 19–81). Patient co-morbidities included cardiomyopathy (71.4%) previous history of intracardiac lead (33.3%), right sided valve surgery (19%), chronic kidney disease (14.3%), previous stroke (9.5%), diabetes (9.5%), and previous device infection (9.5%). The most common underlying cardiomyopathy was congenital cardiac disease (61.9%). 7 patients had underlying valvular heart disease (33.3%) and 1 patient had non-ischaemic dilated cardiomyopathy.Abstract 43 Table 1Pacing indication Pacing Indication Number of Patients (Total 21) Sinus Pauses 7 (33%) Congenital AV Block 5 (24%) Mobitz II AV Block 3 (14%) Complete Heart Block 2 (9.5%) Tachy-Brady Syndrome 2 (9.5%) Mobitz I AV Block 1 (5%) AV Node Ablation 1 (5%) All 21 Micra pacemaker devices were implanted successfully. 80.1% of devices were inserted into the right ventricular septum, with 2 devices inserted into the apex and the right ventricular outflow tract. 18 devices were successfully positioned on first attempt and 3 devices required repositioning (14.3%).There was one complication recorded. This was a pericardial effusion with tamponade, in a patient who was also undergoing lead explant. 3 patients had been lost to follow-up, with device checks occurring in other centres. 2 patients had died. The maximum duration of follow up was 2.9 years since first implant (Median duration 15.7 ± 8.3 months). There were no cases of device migration or failure. Mean R wave sensing was 13.7 ± 5.8 mV. 16 of the 18 patients had a threshold ≤ 1V. Two patients were noted to have higher thresholds (2.88 mV and 3.25 mV). (Table 2).Abstract 43 Table 2Implantation and follow-up parameters Parameters at Implantation Parameters at Follow-Up Pacing threshold (V) Mean 0.58 ± 0.31 0.77 ± 0.7 Range 0.25 – 1.38 0.38 – 2.88 R wave amplitude (mV) Mean 10.64 ± 4.31 13.7 ± 5.8 Range 4.5 – 20.0 2.6 – >20.0 Impedence (Ω) Mean 813 ± 175 558 ± 102 Range 510 – 1080 430 – 760 ConclusionIn our patient cohort, use of Micra™ transcatheter pacemaker insertion was a safe alternative to conventional pacemaker insertion. The minimally invasive implantation was associated with a low acute complication rate and acceptable pacing parameters at follow-up. Longer term follow-up is ongoing.
  • Publisher: London: BMJ Publishing Group LTD
  • Language: English
  • Identifier: ISSN: 1355-6037
    EISSN: 1468-201X
    DOI: 10.1136/heartjnl-2020-ICS.43
  • Source: AUTh Library subscriptions: ProQuest Central
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait