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Effect of Negative Pressure Suction on Fluid Absorption and Infection in Flexible Ureteroscopy

Impact of Negative Pressure Suction on Irrigation Fluid Absorption and Postoperative Infection Risk During Flexible Ureteroscopic Lithotripsy: A Prospective Cohort Study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07492147
Enrollment
400
Registered
2026-03-25
Start date
2026-03-09
Completion date
2027-07-07
Last updated
2026-03-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Kidney Stones

Brief summary

The goal of this observational study is to learn about the effects of using negative pressure suction during retrograde intrarenal surgery (RIRS) in patients aged 18 and older with kidney stones. The main questions it aims to answer are: 1. Does using negative pressure suction during surgery affect the amount of irrigation fluid absorbed by the patient's body? 2. Does using negative pressure suction reduce the risk of postoperative infections, such as fever, systemic inflammatory response syndrome (SIRS), and urosepsis? Researchers will compare patients who undergo surgery with a negative pressure suction sheath to patients who undergo surgery with a standard sheath (without suction) to see if the suction technology reduces fluid absorption and lowers the risk of postoperative complications. Participants will undergo their scheduled kidney stone surgery as part of their regular medical care. Researchers will collect their routine clinical data from the hospital system, including: 1. Preoperative test results (such as CT scans, ultrasounds, and urine tests). 2. Intraoperative data (such as surgery duration and the exact amount of fluid absorbed, measured by a monitoring device). 3. Postoperative recovery data (such as body temperature, pain levels, hospital stay length, and any signs of infection).

Interventions

None listed

Sponsors

Lanzhou University Second Hospital
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients aged 18 years and older with kidney stones who meet the surgical indications for RIRS; * Patients who have provided informed consent.

Exclusion criteria

* Concurrent combination with other surgical procedures, such as percutaneous nephrolithotomy (PCNL); * Patients with malignancies, urinary tuberculosis, immune system diseases, or hyperthyroidism; * Congenital renal anomalies, such as polycystic kidney disease or horseshoe kidney; * Presence of untreated urinary tract infections; * Inability to tolerate surgery due to severe cardiopulmonary dysfunction, hepatic or renal insufficiency, or coagulation abnormalities.

Design outcomes

Primary

MeasureTime frame
Volume of irrigation fluid absorbedIntraoperative (During the surgery)

Secondary

MeasureTime frame
Incidence of postoperative fever and infectious complicationUp to 7 days postoperatively
ostoperative length of hospital stayFrom surgery to hospital discharge (an average of 3-7 days)
Stone-free rate (SFR)1 month postoperatively

Countries

China

Contacts

CONTACTZhiping Wang
wangzplzu@163.com13893131697

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 26, 2026