Suprapubic Catheter (SPT)
A suprapubic catheter (SPC / SPT) drains the bladder through an abdominal-wall tract, avoiding a continuously indwelling urethral catheter. In appropriately selected adults with neurogenic lower urinary tract dysfunction (NLUTD) who require chronic indwelling drainage, AUA/SUFU recommends suprapubic rather than urethral catheterization (strong recommendation, Grade C evidence). Intermittent catheterization is preferred when feasible and appropriate.[1]
Suprapubic drainage can protect the urethra and make catheter care or sexual activity easier for some patients. It still entails an invasive insertion and ongoing risks of blockage, infection, stones, leakage, spasm and tract loss; neither preserved sexual function nor freedom from infection is guaranteed.[1][2]
Indications and route selection
Consider suprapubic drainage for retention when urethral access is unsafe or unsuitable, significant urethral catheter injury, selected urinary trauma or reconstruction, or an agreed long-term drainage plan when other options are unsuitable. It is also useful for urethral rest before definitive stricture surgery: EAU recommends suprapubic drainage when retention or disabling obstruction develops during that period.[2][3]
The decision should include bladder storage pressures, urethral anatomy, hand function, caregiver support, mobility, skin and body habitus, anticipated duration, patient goals, and alternatives. An external collection device does not treat retention. For continence without an emptying indication, an indwelling catheter requires a separate, carefully justified discussion of alternatives and harms.[1][2]
See Intermittent Catheterization, Pelvic Fracture Urethral Injury, and Urinary Diversion.
Device and insertion planning
Balloon-retained, pigtail, and other dedicated suprapubic devices exist. Select a catheter and access system appropriate to the tract, urine/debris burden, anatomy, and product instructions. There is no universal requirement for an initial catheter of at least 20 Fr, nor a fixed off-midline skin site or insertion depth for every patient. Balloon inflation fluid/volume and subsequent exchange compatibility remain device-specific.[2]
Before percutaneous insertion, establish a safely accessible bladder and assess for interposed bowel, previous abdominal/pelvic surgery, altered anatomy, scars, mesh or vascular grafts. A bladder that is not palpable may still be localizable by imaging; a bladder that cannot be safely localized/accessed is not a target for a blind puncture. Prior surgery, pelvic radiation, pregnancy, anticoagulation/coagulopathy and infection at the proposed site require specialist planning. Known or suspected bladder cancer and unexplained gross hematuria require particular assessment because a suprapubic route may be unsuitable, including concern about tumor seeding.[2]
| Approach | Role and limitation |
|---|---|
| Image-guided percutaneous access | Ultrasound helps identify the bladder, trajectory and overlying structures; fluoroscopy may assist wire/catheter placement. An adequate safe window is required. |
| Trocar or Seldinger access | Different access methods selected for the situation and operator expertise. Seldinger access uses needle, wire and dilation; neither method is universally safer in all anatomy. |
| Cystoscopic assistance | Confirms intravesical entry and position. Looking inside the bladder does not independently exclude bowel between skin and bladder. |
| Open placement | An option when percutaneous access is unsafe or when placement accompanies another operation. |
Do not force distension of a low-capacity or recently repaired bladder to meet a generic target. Plan analgesia/anesthesia and monitoring, including autonomic dysreflexia precautions when relevant. Small technical reports, including bowel-displacing hydrodissection, should not be converted into routine bedside recipes; see the hydrodissection hub.[2]
Complication evidence: use the right denominator
Hobbs 2022 retrospectively reviewed 1,000 elective insertions, predominantly in patients with spinal cord injury. Cystoscopy-guided puncture or an incision onto a urethral sound followed by cystoscopy accounted for 98% of procedures. Clavien–Dindo grade IIIb or higher complications occurred in 0.6%; no bowel injury was observed, and one patient died within 30 days from pulmonary embolism. Mostly minor complications occurred in 59% over variable follow-up (median 3.3 years). This does not prove cystoscopy is the safest method or that insertion has no bowel-injury risk.[4]
Hall 2019 identified 11,473 insertions in a UK administrative audit. Of 141 subsequent laparotomy cases, information was returned for 114 and one SPC-related bowel injury was identified. The accompanying published-series meta-analysis found 11/1,490 bowel injuries (0.7%); the authors proposed counseling low-risk patients with a risk below 0.25%. The ascertainment limits, different populations and methods prevent treating the national audit as a complete exact risk estimate or attributing a historical decline to one device.[5]
A more recent long-term cohort of 222 patients with at least two years of follow-up reported frequent catheter-related problems despite low discontinuation. Associations between ancillary treatment and catheter retention were observational; they do not establish that prescribing medication pre-emptively prolongs catheter use.[6]
Care and catheter exchanges
Use securement without traction, closed drainage, a bag below bladder level, routine hygiene, and individualized hydration advice. Assess constipation, debris, spasm, and catheter position when drainage fails or urine bypasses. Routine antibiotics or antimicrobial washouts are not standard prevention strategies.[2][7]
First and difficult exchanges
The first exchange requires an established tract and an operator capable of managing loss of access. Timing depends on the insertion method, healing, catheter system and local specialist protocol; a calendar date alone does not prove tract maturity. Document who will perform the first change and whether imaging or wire guidance is needed.[2]
- Record the original catheter type, size, balloon instructions, insertion details and planned exchange method.
- Deflate and remove according to the device instructions; do not pull against an inflated or retained balloon.
- Confirm the replacement catheter's intravesical position before balloon inflation. Unexpected depth, pain, resistance, absent drainage, or uncertainty requires reassessment rather than force.
- A wire-assisted exchange requires a compatible catheter and controlled access; it is not achieved by blindly pushing a wire or replacement catheter into an uncertain tract.
Dislodgement needs urgent assessment because the tract can close rapidly. An early or lost tract may require image-guided or operative replacement. Do not teach untrained patients or carers to force a catheter into it. Provide a clear emergency contact and backup drainage plan.[2][4]
Subsequent intervals
Base replacement on clinical need, the manufacturer's maximum dwell time, and the individual's blockage pattern. CDC does not recommend routine fixed-interval changes for every patient. The 2016 Cochrane review found only three small trials totaling 107 participants and insufficient evidence for a universal replacement policy.[7][8]
Long-term surveillance and cancer risk
Catheterization does not eliminate the need to assess renal function, stones, bladder pressure or changing symptoms. AUA/SUFU advises interval catheter/site examination in NLUTD and urinary-tract imaging every 1–2 years for catheter users at risk of calculi, with broader follow-up guided by NLUTD risk category.[9]
Chronic catheter use is associated with bladder cancer in observational cohorts, but the effect of the catheter cannot be cleanly separated from underlying disease and other exposures. The large Ontario study combined chronic catheterization types and cannot provide a suprapubic-specific causal estimate or a direct comparison with CIC.[10]
AUA/SUFU recommends against routine screening/surveillance cystoscopy in asymptomatic NLUTD patients, including those with chronic indwelling catheters. A ten-year catheter duration alone does not create a routine cystoscopy/cytology schedule. Hematuria, recurrent infections, suspected anatomic abnormality or other concerning changes warrant targeted evaluation; known bladder cancer follows its own surveillance pathway.[9]
Do not routinely screen for or treat asymptomatic bacteriuria. Pregnancy and selected urologic procedures breaching the mucosa are exceptions. New fever, flank pain, systemic illness, persistent hematuria, abdominal pain, failure to drain, or autonomic dysreflexia requires assessment rather than attribution to ordinary catheter colonization.[7][9]
References
1. Ginsberg DA, Boone TB, Cameron AP, et al. The AUA/SUFU guideline on adult neurogenic lower urinary tract dysfunction: treatment and follow-up. J Urol. 2021;206(5):1106-1113. doi:10.1097/JU.0000000000002239. Statements 35–36.
2. European Association of Urology Nurses. Indwelling catheterisation in adults—urethral and suprapubic. 2024.
3. EAU. Urethral strictures guideline. Perioperative care of urethral surgery: urethral rest. 2026.
4. Hobbs C, Howles S, Derry F, Reynard J. Suprapubic catheterisation: a study of 1000 elective procedures. BJU Int. 2022;129(6):760-767. doi:10.1111/bju.15727
5. Hall S, Ahmed S, Reid S, et al. A national UK audit of suprapubic catheter insertion practice and rate of bowel injury with comparison to a systematic review and meta-analysis of available research. Neurourol Urodyn. 2019;38(8):2194-2199. doi:10.1002/nau.24114
6. Willging AM, Khawaja F, Erickson BA. Suprapubic catheter drainage for the definitive, long-term management of lower urinary tract dysfunction: utilization patterns and longitudinal outcomes. Urology. 2026;207:71–75. doi:10.1016/j.urology.2025.10.002
7. CDC. CAUTI prevention: summary of recommendations. 2009 guideline; web summary updated 2024.
8. Cooper FP, Alexander CE, Sinha S, Omar MI. Policies for replacing long-term indwelling urinary catheters in adults. Cochrane Database Syst Rev. 2016;7:CD011115. doi:10.1002/14651858.CD011115.pub2
9. Ginsberg DA, Boone TB, Cameron AP, et al. The AUA/SUFU guideline on adult neurogenic lower urinary tract dysfunction: diagnosis and evaluation. J Urol. 2021;206(5):1097-1105. doi:10.1097/JU.0000000000002235. Statements 18–25.
10. Hird AE, Saskin R, Liu Y, et al. Association between chronic bladder catheterisation and bladder cancer incidence and mortality: a population-based retrospective cohort study in Ontario, Canada. BMJ Open. 2021;11:e050728. doi:10.1136/bmjopen-2021-050728