Intra-renal reflux

Boccafoschi, C.; Lugnani, Franco

doi:10.1007/bf00261587

Cited by 46 publications

(17 citation statements)

References 14 publications

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“…Boccafoschi et al [5] demonstrated that intrarenal reflux occurred on human cadaver kidneys at pressures under 30 mmHg. They also showed that when the intrarenal pressure was raised to 37-52 mmHg, pyelovenous reflux occurred; this refux is typically related to infection.…”

Section: Discussionmentioning

confidence: 98%

The Effects of Ureterorenoscopy on Renal Function

Aldemir¹,

Önen²,

Kayıgίl³

2010

UIJ

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Abbreviations and AcronymsCRP = c-reactive protein DJ = double J URS = ureterorenoscopy ABSTRACT INTRODUCTION: The effects of dilatation and increased pressure in the ureter and renal pelvis following ureterorenoscopy (URS) are not well documented. The purpose of the prospective study was to evaluate renal function in patients undergoing URS for treatment of ureteral calculi. METHODS: URS was performed on 30 patients between March and June, 2009. The mean (SD) patient age was 38.8 (12.2) years. There were 23 males and 7 females. Biochemical tests of renal function in the serum and urinewere performed before the URS and on the 7 th postoperative day. Outcome measures were compared before and after URS for all patients, and separately for patients with or without a double-J stent, using paired t tests.Probability < .003 indicated significant differences, following a Bonferroni adjustment. RESULTS:Out of 17 measures of renal function, there was a significant postsurgery increase in the amount of proteinuria excreted in the 24-hour urine (P = .001). Ureteral stents were inserted in 19 (63%) patients. Patients with and without DJ stents had a significant increase in proteinuria in 24-hour urine (P = .001 for both patient groups). There were no other significant differences. The mean URS duration was 40 minutes. The mean amount of serum physiological fluid consumed was 1860 mL (SD, 1474.2; range, 250-7500 mL). A pneumatic lithotripter was used in 27 (90%) of the cases to shatter the calculi. There were no surgical complications or significant changes in arterial blood pressure. CONCLUSIONS:The URS procedure did not significantly alter any measure of renal function except for urine proteinuria in 24 hours, which increased following surgery for patients with or without DJ stents. UroToday International Journal ® UI J

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Section: Discussionmentioning

confidence: 98%

The Effects of Ureterorenoscopy on Renal Function

Aldemir¹,

Önen²,

Kayıgίl³

2010

UIJ

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“…The potential consequences of high pressures in the upper urinary tract have previously been studied [2,3,6]. A high constant intrarenal pressure increases the severity of intrarenal backflow and may result in infectious complications and damage to the kidney parenchyma [1,5,6,8]. Immediate postoperative complications, including sepsis, have been identified in 13.3% of patients undergoing ureteroscopy [16Á18].…”

Section: Discussionmentioning

confidence: 99%

Irrigation with isoproterenol diminishes increases in pelvic pressure without side-effects during ureterorenoscopy: A randomized controlled study in a porcine model

Jung

Jakobsen

Mortensen³

et al. 2008

Scandinavian Journal of Urology and Nephrology

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“…Prolonged upper urinary tract obstruction and surgical irrigation will lead to increased pressure of the renal pelvis. When the intrapelvic pressure exceeds 40 cm H 2 O, the contents of the renal pelvis system go beyond its limit, initiating pyelosinus, pyelovenous, pyelolymphatic backflow, and/or irrigation fluid absorption [19][20][21]. Increased intrapelvic pressure has been proven to be a major risk factor for postoperative fever and urosepsis [22].…”

Section: Discussionmentioning

confidence: 99%

The Innovative Use of Ureter Catheter in the Surgery of Obstructive Uropathy

Zhan

Ding

Wang

et al. 2021

Computational and Mathematical Methods in Medicine

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Purpose. Relieving obstruction and protecting renal function are the main therapeutic purposes of obstructive uropathy which often involve surgical treatment, and the ureter catheter is one of the surgical instruments commonly used in surgery. We aimed to explore the innovative use of a ureter catheter in the surgery of obstructive uropathy. Methods. We used a ureteral catheter to innovate the surgical procedure of the most common causes of obstructive uropathy: ureteral calculi and stricture, establishing an internal circulation system (ICS), proposing a three-step dilatation method, and reviewing their effects on patients. Furthermore, we introduced a simple real-time intrapelvic pressure measurement device to monitor intrarenal pressure during operation. Results. Postoperative laboratory examination showed that blood CRP, leukocyte neutrophil level, changes in the hemoglobin, urine occult blood, and positive rate of urine culture in the ICS group are significantly lower than those in the control group, corresponding to a lower incidence of bleeding and infection-related complications clinically. A three-month follow-up revealed 1/3 rate of ureteral stricture in the ICS group comparing to the control. We applied the three-step dilatation in patients with severe stenosis in which the balloon could not pass; the overall effective rate was 90.9%. The pressure of the renal pelvis was displayed on the monitor in real time. The surgeon could estimate the degree of filling of the renal pelvis and adjust the intake volume through the data. Conclusion. The innovative application of ureteral catheters in the operation of obstructive uropathy can realize the real-time monitor of intraoperative renal pelvis pressure, reduce the incidence of lithotripsy postoperative complications, and expand the indications of balloon dilatation in ureteral stricture, which has certain clinical significance.

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Intra-renal reflux

Cited by 46 publications

References 14 publications

The Effects of Ureterorenoscopy on Renal Function

The Effects of Ureterorenoscopy on Renal Function

Irrigation with isoproterenol diminishes increases in pelvic pressure without side-effects during ureterorenoscopy: A randomized controlled study in a porcine model

The Innovative Use of Ureter Catheter in the Surgery of Obstructive Uropathy

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