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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT05735574
Other study ID # 307575
Secondary ID
Status Not yet recruiting
Phase
First received
Last updated
Start date March 1, 2023
Est. completion date April 1, 2024

Study information

Verified date February 2023
Source Guy's and St Thomas' NHS Foundation Trust
Contact Jonathan Royds, MB MD
Phone +44 20 7188 7188
Email jonathan.royds@gstt.nhs.uk
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Spinal cord stimulation (SCS) is a medical device inserted beside the spine to treat nerve pain. When the device becomes infected (which happens 4 % of the time) it needs to be taken out and put back in again at a later date. So far we are unsure of how much this process costs. I am going to analyse data collected on a database of all devices taken out due to infection and calculate an average cost of taking them out, the intermediate care and putting them back in again in our hospital only. This will enable us to understand how much this process costs and if there are any methods of reducing the chance of infection in the future; we will be able to work out how much the NHS should pay for these products based on this data. This will be done in Guys and St Thomas's from a database in the chronic pain research department in patients who had their device taken out due to infection. It will take 6 months and will all be retrospective. Additional details may be collected from patients electronic records where needed. These will be collected by a member of the direct care team and pseudonymised prior to adding to the research data set.


Description:

Design: Retrospective chart and electronic record review of all explants due to infection with cost analysis up to re-implantation. Methods: Based on a database there are approximately N=18-20 infections over 7 years with adequate data to determine the overall cost of explant due to infection. The data to be collected will include: hospital admission, surgical time, blood tests, swabs, antibiotic therapy, additional outpatient visits, cost of re-implantation. These can be collected from electronic patient records (EPR). The cost of individual patient admissions will be obtained from the account services at Guys and St Thomas's and sent in a password protected database. The site of infection will also be recorded and this can be obtained from the operative note. A study by Hayek and colleagues have indicated only 10% of infections are at the lead site and the majority are at the IPG site. Another review by Follet and colleagues have indicated only 54% of infections are at the IPG site, 17% at the lead site and the others not clearly determined. For this reason, there will need to be a range of costs based on the confirmed and the indeterminate sites of infection. The main focus of this paper will be on IPG infections since TYRX is only used at the IPG site. Economic metrics will also be taken into consideration which have been described in the UK as some patients for technical reasons cannot be re-implanted with SCS systems after infection. The cost effectiveness of this therapy is essentially lost in these patients forever. The time proceeding to re-implantation can also be reviewed and incorporated. There was an NIHR review of cost analysis of these systems published in the UK that can be used for this. Specifically the cost of SCS and conventional medical management (CMM) is £3440 in year one of these devices and CMM alone is £6936.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 18
Est. completion date April 1, 2024
Est. primary completion date December 30, 2023
Accepts healthy volunteers
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria: - Any patient who had an explant of a neuromodulation device due to infection between 2013-2020 in our centre. - Any patient who had as suspected explant of a spinal cord stimulator due to infection Exclusion Criteria: • Explant of a device for another reason

Study Design


Intervention

Other:
IPG infections
Infected IPGs

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
Guy's and St Thomas' NHS Foundation Trust Medtronic

References & Publications (1)

Al-Kaisy A, Royds J, Al-Kaisy O, Palmisani S, Pang D, Smith T, Padfield N, Harris S, Wesley S, Yearwood TL, Ward S. Explant rates of electrical neuromodulation devices in 1177 patients in a single center over an 11-year period. Reg Anesth Pain Med. 2020 N — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Cost of explant, intermediate care and re-implantation of device Cost of explant, intermediate care and re-implantation of device Until device re-implanted which will vary from 3 months- 1 year
Secondary Pathway of patients from device explantation until re-implantation of device up to re-implant or decision not to which will vary from 3 month- 1 year
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