Indwelling Urinary Catheter Users
Conditions
Keywords
urinary catheter, IDC
Brief summary
The fill and flush valve (valve) is an automated valve which is designed to open in response to rising bladder pressure which occurs as the bladder becomes full. The valve is situated between the IDC and the drainage bag as a manual valve would be.
Detailed description
The objective of this study is to assess preliminary safety, effectiveness, reliability, comfort and user acceptability of the valve with adults who have a long-term IDC and the feasibility of undertaking future community-based evaluation. To do this the investigators will * determine if the valve functions reliably i.e. automatically opens to drain urine within acceptable individual bladder volumes with a range of patients; * determine if the valve functions effectively i.e. allows for the complete bladder emptying (\< 100ml post void residual) during rest and daily activities; * determine if the process of filling and automatic draining is comfortable and acceptable for participants; * collect preliminary data on the potential for bioburden/biofilm following in human use of the valve; * assess the feasibility of undertaking a future randomised control trial of the valve. Group 1 - The investigators will test the valve with participants (n=8) who currently use a standard manual valve (without leg-bag).This first group will include a safety cohort of participants (n=4). All safety data will be reviewed from the initial 4 participants before further participants can undergo the study investigation. Group 2- The Investigators will test the valve with participants (n=8) who currently use a drainage bag with free drainage. The data collection process and study procedures will be identical for both groups. After use(in both groups), the valves will be examined microbiologically in the University of Southampton laboratory to detect bioburden and/or biofilm to ascertain a baseline for future studies.
Interventions
DEVICEFill and Flush Valve
The fill and flush valve (Figure 1) is an automated valve which is designed to open in response to rising bladder pressure which occurs as the bladder becomes full. The valve is situated between the IDC and the drainage bag as a manual valve would be. There are three variants of the valve which respond to different degrees of bladder pressure. People's bladders function at different pressure levels. One of the aims of this study is to gain preliminary data on which valve variant works and under which circumstances. Pressure ranges are as follows: Low: 22 - 49cm H2O Medium: 35 - 61cm H2O High: 53 - 79cm H2O
Sponsors
National Institute for Health Research, United Kingdom
BlueWind Medical
University Hospital Southampton NHS Foundation Trust
University of Southampton
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DEVICE_FEASIBILITY
Masking
NONE
Intervention model description
2 groups, 1 group including interim safety review
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* IDC-users (urethral or suprapubic), over 18, who have had a catheter in situ for at least one month and use a manual valve or drainage bag to collect urine * Independent with catheter care needs (e.g. bag emptying or valve opening) * Able to transfer from bed to chair, stand and walk short distances unaided * Able to drink moderate levels of fluid (500mls in the first 2 hours and 150mls per hour thereafter) * Able to provide informed consent (self-report and research nurse assessment) * Usual medical provider provides confirmation of suitability
Exclusion criteria
* End stages of a terminal illness * Current treatment of urinary tract infection * Has been advised by a urologist against using a valve on clinical grounds * Lack of bladder sensation (e.g. unable to sense when bladder needs emptying) * Previous bladder surgery that could affect the integrity of the bladder * At known risk of autonomic dysreflexia
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Safety: Reliability | An average of 16 hours in total | Valve opening - Proportion of observations of automatic valve opening before bladder capacity (500ml or less) is reached - as measured by bladder scanner |
| Safety: Effectiveness | An average of 16 hours in total | Bladder emptying - proportion of valve voids with residual urine \<100ml - as measured by bladder scanner. |
| Comfort | An average of 16 hours in total | Participant report (Valve self-report questionnaire) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| User acceptability | An average of 16 hours in total | Valve self-report questionnaire (Valve self-report questionnaire) |
Countries
United Kingdom
Outcome results
None listed