An observational study in Kidney Calculi, sponsored by Peking University First Hospital. Enrolling by invitation at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2025-09-02.
Sponsored by Peking University First Hospital · Observational
The removal rate, complication risk and operation time of ureteral soft scope combined with negative pressure suction sheath therapy for patients with high-load kidney stones (2-3cm) are still controversial. Therefore, the safety and effectiveness of flexible ureteroscope combined with negative pressure suction sheath in treating patients with high-load kidney stones is unknown. This study will help to solve the problems, provide a more scientific treatment strategy for clinical practice, and promote the application of negative pressure aspiration technology in the field of flexible ureteroscopy lithotripsy, providing new means and ideas for individualized treatment.
The patients enrolled in the group should complete the routine clinical diagnosis and treatment before the operation, including non-contrast CT scan of the urinary system (before surgery), urine routine, urine culture, etc. The postoperative follow-up mainly includes complications after the operation, the time of removing the D-J tube, the time of removing the urinary catheter, urine routine, urine culture, etc. The blood routine, blood chemistry, etc. should be reexamined in the outpatient department one month (4 weeks) after the operation.Patients underwent low-dose CT (DLP:0.45 mGy·cm) scans on the first day and one month after surgery.
During the operation, we will collect some data, including the time when invasive procedures start, the total operation time, the renal pelvis pressure, laser power, and total laser energy; we will also keep a backup of the operation video.
598 studies on the registry are indexed under Kidney Calculi; 163 are open to participants now.
This study's planned enrollment of 115 is below the median of 144 across 110 observational studies indexed under Kidney Calculi.
Browse Kidney Calculi studies →Peking University First Hospital is the lead sponsor of 378 studies on the registry; 178 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Age range from 18 to 75 years old; Patients undergoing flexible ureteroscopy lithotripsy in our hospital due to high-load kidney stones(2-3cm); All enrolled patients received informed consent and signed informed consent before operation.
Exclusion Criteria:
Stone removal rate 1 month after surgery
Time frame: From enrollment to 1 month after surgery
Immediate stone free rate
Time frame: From enrollment to 1 day after surgery
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
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Peking University First Hospital