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Double-J (DJ) Ureteral Stent

A double-J stent provides internal drainage from the renal pelvis to the bladder across a ureteral obstruction or healing repair. Its two curls help retain position; migration, obstruction and encrustation can still occur. Decide why the stent is needed, how its function will be checked, and who will remove or exchange it before placement.[1][2]

For device-specific long-term options, see Metal & Long-Term Stents. Nephrostomy provides external drainage, while a nephroureteral catheter retains an external access port.

Selection and Placement​

Choose the length, caliber, material and dwell limit of the actual product, accounting for ureteral length, obstruction, transplant or reconstructed anatomy, expected debris and tolerance. A smaller diameter can improve symptoms in some settings, but drainage and insertion requirements also matter. Height formulas and brand names do not establish an ideal length or a universal exchange interval.[1][2]

Polymer and silicone products differ in stiffness, coatings and permitted duration. The tightly coiled metallic Resonance is not a nitinol self-expanding segmental stent; its delivery method and 12-month maximum indwell are addressed in the metal-stent hub. No material guarantees freedom from biofilm or encrustation.[1][3]

Retrograde placement usually uses cystoscopy, a guidewire and imaging; antegrade or combined access is useful when retrograde access fails. Confirm the wire and both curls are in their intended locations. Resistance requires reassessment rather than force. Avoid assuming that an apparently well-positioned stent is functionally draining a compressed ureter or a high-pressure bladder.[2][4]

When a Stent Helps​

SituationPractical role
Sepsis with an obstructing stoneUrgent decompression by a stent or PCN, with immediate antibiotics and cultures; defer definitive stone treatment until sepsis resolves. Choose the approach most likely to achieve timely drainage.[5]
Benign or malignant obstructionBypass an obstruction when internal drainage is feasible. Consider PCN, a PCNU, selected long-term devices or reconstruction if access, patency or tolerance is inadequate.[2]
Ureteral injury or reconstructionSupport drainage across a repair or selected partial injury. Complete injury, devitalized tissue and persistent leaks may require reconstruction or additional diversion; a stent is not a substitute for a viable, tension-free repair.[6]
UreteroscopySelective postoperative drainage or staged access, as below.[5]
Kidney transplantationProphylactic anastomotic stenting reduces major urological complications; technique and removal timing remain transplant-specific.[7]

A prophylactic catheter can assist ureteral identification in a difficult pelvic operation, but it does not eliminate injury risk or replace visual identification and careful dissection.[6]

Stenting Around Ureteroscopy​

The EAU 2026 guideline recommends omitting a stent after uncomplicated URS. Stent when complications or uncertainty warrant drainage—for example ureteral trauma, perforation, concerning bleeding, residual fragments or infection risk. Routine prestenting is also unnecessary; a stent followed by another attempt after 7–14 days is an option when ureteral access cannot be obtained safely.[5]

There is no universal best postoperative dwell time. The reason for drainage, injury, residual burden and planned second procedure govern the plan. A 3-versus-7-day trial found better symptom scores with shorter dwell, while observational work in non-prestented patients associated very short string-stent dwell with more emergency visits around removal. These findings do not justify a fixed 3-day, 5-day or 10–14-day rule for every patient.[5][8][9]

Kidney Transplantation: What the Evidence Establishes​

EvidenceFinding and limit
Cochrane 2024Twelve studies, 1,960 recipients. Major urological complications were reduced in 11 studies/1,834 recipients: RR 0.30 (95% CI 0.16–0.55), moderate certainty. The UTI effect remained uncertain: RR 1.32 (0.97–1.80), very low certainty. This review compared stenting with no/selective stenting; its duration subgroups do not establish the optimal removal day.[7]
DUET trial, 2025Single-center randomized comparison of external Single-J removed on day 9 versus internal Double-J removed at 3 weeks. PCN within 6 months occurred in 21/145 (14.5%) versus 7/155 (4.5%), respectively. This compares two care protocols, including different duration and discharge rules. Reconstructed tracts and bladder dysfunction requiring catheterization were excluded.[10]
Yin 2026 meta-analysisReported reduced leak/obstruction and increased UTI, but included studies excluded by Cochrane for design concerns. Its estimates should not be relabeled as Cochrane results or treated as definitive proof of the UTI tradeoff.[7][11]

Shorter transplant stenting can reduce treatment burden in appropriate protocols, but an early-removal trial does not establish day 5 as safe for every anastomosis. Coordinate removal with the transplant team, particularly after a leak, difficult implantation or impaired drainage.[7][12]

Symptoms and Complications​

Frequency, urgency, dysuria, hematuria and flank discomfort are common. Fever, rigors, worsening flank pain, reduced urine output or persistent/heavy bleeding warrant assessment for infection, obstruction, migration or another complication, rather than automatic attribution to stent irritation.[1][2]

Check position and drainage, then individualize symptom treatment. Alpha-blockers can reduce stent-related symptoms; pharmacology, dosing and hypotension precautions belong in the alpha-blocker hub. Indirect rankings of drug combinations do not establish one best regimen for all patients.[5]

Bacteriuria or colonization alone does not establish symptomatic UTI. Manage infection and procedure-specific antimicrobial needs through the UTI treatment and perioperative prophylaxis hubs. Planned mucosa-traumatizing endourologic procedures and pregnancy have separate bacteriuria recommendations.[13]

Removal, Exchange and Follow-Up​

  • Record side, product, size, insertion date, indication, removal/exchange deadline and responsible clinician in a stent register; give the patient the plan and a route to contact the service.
  • Follow the device's maximum dwell limit and shorten the interval for encrustation, infection, obstruction or other clinical concerns. A permitted maximum is not an assurance of patency until that date.
  • Removal may be cystoscopic or, for an appropriate device and patient, by an extraction string or another specified retrieval system. Cystoscopy is not universally required.
  • Do not force removal of a retained or encrusted stent. Image and plan endoscopic or staged removal according to the burden and location of encrustation.
  • Confirm resolution of the underlying drainage problem when clinically required. Removing the stent does not itself establish that a stricture or leak has healed.[1][2]

References​

1. Sali GM, Joshi HB. "Ureteric stents: overview of current clinical applications and economic implications." Int J Urol. 2020;27(1):7–15. doi:10.1111/iju.14119

2. Ryan AG, Irvine I, Bardgett H, et al. CIRSE Standards of Practice on Nephrostomy and Ureteric Stent Placement and Exchange. Cardiovasc Intervent Radiol. 2026;49:464–479. doi:10.1007/s00270-025-04328-9

3. Cook Medical. Resonance Metallic Ureteral Stent Set: Instructions for Use, IFU0020-18. English pages 3–5; version linked from the US product page.

4. Linder BJ, Occhino JA. "Cystoscopic ureteral stent placement: techniques and tips." Int Urogynecol J. 2019;30(1):163–5. doi:10.1007/s00192-018-3762-8

5. European Association of Urology. EAU Guidelines on Urolithiasis, 2026. Sections on sepsis, ureteroscopy, stenting and pregnancy.

6. European Association of Urology. EAU Guidelines on Urological Trauma, 2026. Ureteral trauma: prevention and management.

7. Patterson LG, Tingle SJ, Rix DA, et al. Routine intraoperative ureteric stenting for kidney transplant recipients. Cochrane Database Syst Rev. 2024;7:CD004925. doi:10.1002/14651858.CD004925.pub4

8. Ghani KR, Olumolade OO, Daignault-Newton S, et al. What Is the Optimal Stenting Duration After Ureteroscopy and Stone Intervention? Impact of Dwell Time on Postoperative Emergency Department Visits. The Journal of Urology. 2023;210(3):472-480. doi:10.1097/JU.0000000000003555

9. Heidenberg DJ, Nauheim J, Grant C, et al. Timing of Ureteral Stent Removal After Ureteroscopy on Stent-Related Symptoms: A Validated Questionnaire Comparison of 3 and 7 Days Stent Duration. Journal of Endourology. 2023. doi:10.1089/end.2023.0189

10. Oudmaijer CAJ, Muller K, van Straalen E, et al. Long-Term Double-J Stenting Is Superior to Short-Term Single-J Stenting in Kidney Transplantation. PLoS One. 2025;20(1):e0317991. doi:10.1371/journal.pone.0317991

11. Yin S, Hao X, Cai X, et al. Do Ureteral Stents Improve Clinical Outcomes in Renal Transplantation? A Systematic Review and Meta-Analysis. PeerJ. 2026;14:e20665. doi:10.7717/peerj.20665

12. Patel P, Rebollo-Mesa I, Ryan E, et al. Prophylactic Ureteric Stents in Renal Transplant Recipients: A Multicenter Randomized Controlled Trial of Early Versus Late Removal. American Journal of Transplantation. 2017;17(8):2129-2138. doi:10.1111/ajt.14223

13. Nicolle LE, Gupta K, Bradley SF, et al. Clinical Practice Guideline for the Management of Asymptomatic Bacteriuria: 2019 Update by IDSA. Clin Infect Dis. 2019;68:e83–e110. doi:10.1093/cid/ciy1121