Ureteroscopic Lithotripsy Research Articles

Factors affecting the intraoperative calculi excretion during flexible ureteroscopy lithotripsy: an in vitro analysis.

To explore the parameters influencing intraoperative calculi excretion (ICE) during flexible ureteroscopy lithotripsy (fURL) using in vitro simulation experiments. 3D-printed human kidney models were used to simulate the elimination of gravel during fURL. The factors influencing the ICE during fURL were analyzed by comparing the effects of different degrees of hydronephrosis (mild, moderate, and severe), surgical positions (supine and lateral position), ratios of endoscope-sheath diameter (RESD) (0.625, 0.725, and 0.825), gravel sizes (0.50-1.00mm, 0.25-0.50mm, and 0.10-0.25mm), and ureteral access sheaths (UASs) (traditional UAS and negative-pressure UAS) on ICE. The impacts of various UAS, RESD, degree of hydronephrosis, surgical positions, and gravel sizes on ICE were all significant (p < 0.05). We found no evidence of multicollinearity for all the independent variables, and the linear regression equation fitted as (R2 = 0.569). Employing negative-pressure UAS, smaller RESD, milder hydronephrosis, lateral position, and smaller gravel size contribute to improved ICE during fURL. Among them, the adoption of negative-pressure UAS had the most substantial effects.

The optimal ratio of endoscope-sheath diameter with negative-pressure ureteral access sheath: an in vitro research.

To maintain safe intrarenal pelvic pressure (IPP), the combination of flexible ureteroscope (fURS) and traditional ureteral access sheath (T-UAS) should maintain a basic rule that is the ratio of endoscope-sheath diameter (RESD) ≤ 0.75. However, the negative-pressure ureteral access sheath (NP-UAS) may break the rule of negative pressure suction. This study aimed to examine the effect of NP-UAS on IPP and flow rate (FR) with varying RESD. In a 3D-printed renal model, flexible ureteroscopy lithotripsy (fURL) was replicated. Six sizes of fURS paired with 12Fr T-UAS and NP-UAS resulted in six distinct RESDs of 0.63, 0.78, 0.87, 0.89, 0.90, and 0.91. While the irrigation pressure (IRP) was set between 100 and 800 cmH2O and the sucking pressure (SP) was set between 0 and 800 cmH2O, the IPP and FR were measured in each RESD. NP-UASs can reduce the IPP and increase the FR at the same RESD compared to T-UASs. The IPP decreased with increasing SP with NP-UAS. When RESD ≤ 0.78, T-UAS and NP-UAS can maintain IPP < 40 cmH2O in most circumstances. When RESD = 0.87, it is challenging for T-UAS to sustain IPP < 40 cmH2O; however, NP-UAS can do so. When RESD ≥ 0.89, it is difficult to maintain an IPP < 40 cmH2O even with NP-UAS. NP-UAS can decrease IPP and increase FR compared with T-UAS. To maintain a safe IPP, it is recommended that RESD < 0.85 when utilizing NP-UAS.

Comparison of Thulium Fiber Laser versus Holmium laser in ureteroscopic lithotripsy: a Meta-analysis and systematic review

ObjectivesTo compare the efficacy and safety of thulium fiber laser (TFL) to holmium: YAG (Ho: YAG) laser in ureteroscopic lithotripsy for urolithiasis.MethodsPubMed, Web of Science, Embase, CENTRAL, SinoMed, CNKI database, VIP and Wanfang Database were systematically searched for all relevant clinical trials until September 2023. References were explored to identify the relevant articles. Meta-analysis was carried out for the retrieved studies using RevMan5.4.1 software, and the risk ratio, mean difference and 95% confidence interval were expressed. Statistical significance was set at p < 0.05. The main outcomes of this meta-analysis were stone-free rate (SFR), perioperative outcomes and intraoperative or postoperative complications.ResultsThirteen studies, including 1394 patients, were included. According to the results of pooled analysis, TFL was associated with significantly higher stone-free rate (SFR) [0.52, 95% CI (0.32, 0.85), P = 0.009], shorter operation time [-5.47, 95% CI (-8.86, -2.08), P = 0.002], and less stone migration [0.17, 95% CI (0.06, 0.50), P = 0.001]. However, there was no significant difference in terms of the laser time, duration of hospital stay, drop of hemoglobin level, total energy, postoperative ureteral stenting, the incidence of intraoperative complications or postoperative complications between TFL and Ho: YAGs.ConclusionThe findings of this study demonstrated several advantages of TFL in terms of higher SFR, shorter operative time and less stone migration.Trial registrationThe protocol of this systematic review was listed in PROSPERO (www.crd.york.ac.uk/PROSPERO) (Protocol number: CRD42022362550).

Preference for diagnosing and treating renal colic during pregnancy: a survey among Chinese urologists.

To explore the preference for diagnosing and treating renal colic during pregnancy among Chinese urologists. A questionnaire was designed using the Sojump® platform. WeChat, the largest social networking platform in China, was used to distribute the questionnaire to urologists at hospitals of all levels in China. In total, 110 responses were included. Of the respondents, 100.0% used ultrasound to diagnose renal colic during pregnancy, followed by magnetic resonance imaging (17.3%) and low-dose CT (3.6%). Phloroglucinol (80.9%) and progesterone (72.7%) were the most commonly used antispasmodics and analgesics. Opioid analgesics were not commonly used (12.7%). Most of the respondents (63.6%) indicated that no more than 20% of the patients needed surgical intervention. If surgery was unavoidable, 95.5% preferred temporary renal drainage, including ureteral stenting (92.7%) and percutaneous nephrostomy (2.7%). However, some respondents still preferred definitive stone treatment, such as ureteroscopy lithotripsy (3.6%) and percutaneous nephrolithotomy (0.9%). Moreover, there were no differences in the choices of urologists with different professional titles regarding diagnostic tools, most therapeutic medications, or surgical methods (p > 0.05). Ultrasound is the preferred tool for diagnosing renal colic during pregnancy. Low-dose CT is still not widely accepted. Pregnant patients with renal colic are initially treated conservatively. Urologists prefer ureteral stenting when there are clinical indications for intervention.

Clinical Efficacy Evaluation of a Novel Negative Pressure Ureteroscopic Lithotripsy for Ureteral Stones

ObjectiveTo evaluate the clinical efficacy of a novel negative pressure ureteroscopic lithotripsy (NP-URL) compared to standard ureteroscopic lithotripsy (S-URL) for treating ureteral stones. MethodsA total of 284 patients diagnosed with ureteral stones and who underwent ureteroscopic lithotripsy between December 2020 and May 2022 at our hospital were included in the study. Among them, 146 cases underwent NP-URL and 138 cases underwent S-URL. The negative pressure device used in NP-URL consists of a 5F ureteric catheter and a tee joint. We evaluated the operative duration, stone-free rate, incidence of postoperative complications, stone retropulsion rate, and adjunct procedure rate between the two groups. ResultsThe mean operative duration was significantly shorter in the NP-URL group compared to the S-URL group (30.17±5.84 mins vs. 34.84±6.62 mins; P＜0.05). Additionally, the NP-URL group had a lower incidence of postoperative fever (1.4% vs. 8.7%; P＜0.05), reduced stone retropulsion rate (3.4% vs. 11.6%; P＜0.05), and a statistically lower rate of adjunct procedures (5.5% vs. 14.5%, P＜0.05). The NP-URL group also demonstrated a higher primary stone-free rate (91.8% vs. 81.9%; P＜0.05). However, there was no significant difference in the final stone-free rate between the NP-URL and S-URL groups (P＞0.05). ConclusionsNP-URL potentially reduces operative duration, significantly decreases the incidence of postoperative complications, and achieves better primary stone-free rates compared to S-URL.

Impact of Metabolic Syndrome on Post-Operative Infection in Patients Undergoing Flexible Ureteroscopy Lithotripsy.

Background: To investigate retrospectively whether metabolic syndrome (MetS) of flexible ureteroscopy (fURS) lithotripsy can be used to predict post-operative infection. Patients and Methods: After screening, 1,110 patients who received fURS lithotripsy for upper urinary tract stones in our center between January 2015 and December 2022 were analyzed retrospectively. Patients were divided into MetS-positive group and MetS-negative group. Post-operative infection was divided into fever, urosepsis, and septic shock. Relevant data during the peri-operative period were collected. Univariable and multivariable logistic regression analyses were adopted to estimate the impact of metabolic syndrome on post-operative infection in patients undergoing fURS lithotripsy. Results: Among the 1,110 patients, 427 tested positive for MetS, whereas 683 tested negative. Eighty-eight patients suffered from fever (67 patients in the MetS-positive group and 21 in the MetS-negative group). Forty-nine patients had urosepsis (29 patients in the MetS-positive group and 20 in the MetS-negative group), of whom seven patients developed septic shock. No patient developed multiple organ failure or died because of infection. The prevalence of post-operative infections in the MetS-positive group was higher than that in the MetS-negative group (p < 0.001). Multivariable logistic regression analyses showed that diabetes mellitus, MetS-positive, positive urine culture, and longer operation time were positively correlated with post-operative fever. Positive MetS, positive urine culture, and longer operation time were strongly correlated with post-operative urosepsis. Conclusions: Metabolic syndrome was found to be associated with post-operative infection in patients undergoing fURS lithotripsy, suggesting it can serve as a predictive factor.

Ureteroscopic lithotripsy with pressure-measuring ureteral access sheath for large ureteral stones

Introduction To evaluate the safety and efficacy of ureteroscopic lithotripsy with pressure-measuring ureteral access sheath (PM-UAS) for large ureteral stones. Material and methods A total of 258 consecutive patients with large ureteral stones ≥15 mm was enrolled. They were treated by ureteroscopic lithotripsy with PM-UAS in the oblique supine lithotomy position. The technology can precisely monitor and automatically control cavity pressure. The cavity pressure control value was set at –15 mmHg∼–5 mmHg. The cavity pressure limit value was set at 30 mmHg. Infusion flow rate was set at 100–200 ml/min. Postoperative data such as stone-free rate and complications were analyzed. Results PM-UAS was successfully implanted in 225 patients at one stage. Eighteen cases of patients who had failed the first surgery were successfully treated with a second operation. Fifty-one cases with stones migrating up to the kidney were converted to flexible lithotripsy. The other 15 cases were converted to percutaneous nephrolithotomy due to significant ureteral stenosis. The operative time was 49.5 ± 11.2 min. The stone-free rates after one month and three months were 87.2% (212/243) and 94.2% (229/243), respectively. Complications from grade I to II were observed in 25(10.3%) patients. No other complications from grade III to V were noted Conclusion The ureteroscopic lithotripsy with PM-UAS is safe and efficacious for large ureteral stones.

Assessment of the incidence and risk factors of postoperative urosepsis in patients undergoing ureteroscopic lithotripsy.

Ureteroscopic lithotripsy (URSL) is an approved, minimally invasive, low-risk procedure for urolithiasis treatment. However, some patients may develop urinary tract infection (UTI) post-procedure, eventually leading to urosepsis. Determining the predictors of infection after URSL would help identify patients at a high risk of urosepsis, thereby enabling the early implementation of effective treatment. Therefore, we aimed to establish the incidence and predictors of urosepsis after URSL. We assessed 231 patients who underwent URSL using a holmium laser. The incidence of urosepsis during the 30-day post-treatment period was analysed, and potential predictors of urosepsis, including patient characteristics and individual clinical factors, were examined. Statistical analysis revealed that 16.88% of patients had a confirmed positive urine culture before the procedure. Post-procedure urosepsis occurred in 4.76% of patients. Univariable analysis revealed that 3 factors were significantly associated with the risk of postoperative urosepsis: double-J stent insertion before URSL, pre-operative positive urine culture, and MDR pathogen found preoperatively. In multivariable analysis, only positive urine culture remained significantly associated with the risk of urosepsis after URSL. Patients with positive urine culture before URSL are at significantly higher risk of urosepsis in the postoperative period. Hence, urine culture should be routinely performed before planned endoscopic urolithiasis treatment.

Indications for Intervention in Patients Undergoing Ureteroscopic Therapy for Ureteric Calculus: A Cross-sectional Study

Introduction: Urolithiasis is one of the most common urological problems worldwide. The fastest treatment modality to achieve stone clearance of ureteral stones is Ureteroscopic Lithotripsy (URSL). However, it is negated by both the cost burden and potential risk to the patient. Medical Expulsive Therapy (MET) is a treatment option for upto 10 mm stones but has failure rates of 40-60% in the literature. Aim: To analyse the various indications for surgery, whether MET was used or not, if used-its details, operative findings at ureteroscopy including the reason for the failure of MET. Materials and Methods: A cross-sectional study consisting of 72 patients with ureteric calculi undergoing URSL was analysed from June 2017 to December 2018 at Mazumdar Shaw Medical Centre, Bangalore , Karnataka, India. Indications were assessed at the time of admission. During ureteroscopy, factors like impaction, distal obstruction, and unusual findings were studied, which could have contributed to the failure of MET. The Chi-square test was used as a test of significance for categorical data. The Analysis of Variance (ANOVA) test was used as a test of significance to identify the mean difference between continuous variables. The p-value of &lt;0.05 was considered statistically significant. Results: The mean age in the study was 41.65±13.4 years (range 20-69 years), and the mean stone size was 10.03±3.34 mm. Large stone was the most common indication (41, 56.9%, p=0.004), followed by failed MET (35, 48.6%). Even though MET could have been continued for four weeks in 17 patients (23.6%), they were taken up for surgery. The impaction rate was 70.8% (51), with 48.6% (35) being large impacted stones and 22.2% (16) being small impacted stones. The overall stone clearance rate was 68 out of 72 (94.4%). Conclusion: Large stone size (≥10 mm) and failed MET were the main indications for surgery. One reason for the failure of MET was not waiting for a duration of four weeks. During ureteroscopy, impaction of the stone, irrespective of size, was the most common finding and was the reason for the failure of MET. Ureteric stones on MET should not be neglected as there are reasons for the failure of MET, and they will require URSL after four weeks

Comparison of Outcomes of Extracorporeal Shockwave Lithotripsy with Ureteroscopic Lasertripsy for Management of Proximal Ureteral Stones.

To compare the outcomes of extracorporeal shockwave lithotripsy with ureterorenoscopy and lasertripsy for managing upper ureteral stones of size 10mm to 15mm. Observational, cross-sectional study. Place and Duration of the Study: Department of Urology, Sindh Institute of Urology and Transplantation (SIUT), from December 2020 to December 2021. A total of 168 patients with the diagnosis of proximal ureteric stone of size 1-1.5 cm were enrolled for this study. Patients were divided into two groups by simple random method. Group 1 patients underwent ureteroscopic lithotripsy (URS) and lasertripsy while Group 2 patients were subjected to extracorporeal shockwave lithotripsy (ESWL). Patients' demography, operative time, duration of hospitalisation, complication rate and stone-free rates, were recorded for both groups. Frequency and percentages were calculated for categorical variables and mean and standard deviation were calculated for continuous variables. For comparison of continuous variables, one-way ANOVA was applied, and Chi-square test was applied to compare the categorical variables. The p-value ≤0.05 was taken as significant. The mean age was of 39.55 ± 14.06 years, with the majority falling within the age group of 26 to 40 years. There were more males (116, 69%) than females (52, 31%). Most of the patients did not have a history of diabetes or hypertension. Sixty-two patients had previous history of stones. The average duration of ureteric stone disease was 3.18 ± 3.14 months. The mean size of the ureteric stone was 10.82 ± 3.19mm. The procedure duration was significantly shorter for URS, as compared to ESWL (33.81 ± 15.42 minutes vs. 45.00 ± 0.00 minutes, p=<0.01. The overall stone clearance rate was significantly higher after URS (83.3%) as compared to ESWL (64.2%, p=0.05). URS was a superior treatment option as compared to ESWL. However, the selection of the most appropriate procedure should be based on a tailored approach considering the patient's preference and the size of the stones. Extracorporeal shockwave lithotripsy (ESWL), Ureteroscopic lithotripsy (URS), Modified clavien classification system (MCCS), Ureteric stone.

The effect of distal ureteral lateralization angle on ureteral trauma avoidance and successful ureteral access sheath placement.

The use of ureteral access sheaths (UAS), which offer advantages in flexible ureteroscopic lithotripsy (fURL), may lead to undesirable conditions such as ureteral injury, ischemia, and prolonged ureteral stenosis. The aim of this study was to investigate the effect of the distal ureteral lateralization angle on successful UAS placement. We analyzed the data of patients who underwent fURL for kidney and/or proximal ureteral stones retrospectively. Based on the preoperative computed tomographic examinations of the patients, the bladder outlet was considered the zero point. We calculated the angle values between the horizontal axis passing through this point and the most lateralized point of the distal ureter. The patients were divided into two groups: those to whom UAS was successfully placed and those to whom UAS placement failed. No significant difference was detected between the groups with successful UAS placement (n=36) and those without UAS placement (n=12) in terms of sex, laterality, localization, number of stones, stone burden, and bladder volumes evaluated with preoperative computed tomography (p>0.05). However, a significant difference was found between the two groups regarding age and distal ureteral lateralization angle (p<0.001, p=0.013). The distal ureteral lateralization angle is considered to be an effective factor in the placement of UAS in patients scheduled for fURS.

Efficacy of DJ Stenting versus Silodosin after Ureteroscopic Lithotripsy for Lower Ureteric Stones: A Prospective Randomized Clinical Trial

Efficacy of DJ Stenting versus Silodosin after Ureteroscopic Lithotripsy for Lower Ureteric Stones: A Prospective Randomized Clinical Trial

Retrospective Analysis of Risk Factors for Urinary Tract Infection after Ureteral Calculi Surgery.

Ureteral calculi are a common diagnosis in the field of urology worldwide, and they represent a prevalent subtype of urolithiasis. Ureteroscopic stone surgery is the cornerstone treatment, but postoperative urinary tract infection (UTI) remains a clinical concern. Our study aims to analyse specific risk factors associated with postoperative UTIs following ureteroscopic stone surgery. We conducted a case-control study and collected clinical data from 145 patients who underwent ureteroscopic lithotripsy at our hospital from January 2021 to January 2023. Binary logistic regression analysis was used to investigate risk factors for postoperative UTI. Receiver operating characteristic curves were plotted, and area under the curve (AUC) was calculated to evaluate the predictive value of each factor. Forty patients developed UTI after ureteroscopic stone surgery. Compared with the control group, the case group showed significant differences in stone size, history of diabetes mellitus and preoperative urine culture results (p < 0.05). Multivariable binary logistic regression analysis revealed that stone size (Odds Ratio (OR) = 1.952, p = 0.010), history of diabetes mellitus (OR = 2.438, p = 0.038) and preoperative urine culture (OR = 2.914, p = 0.009) were independent risk factors for postoperative UTI. The AUC values of stone size, history of diabetes mellitus and preoperative urine culture were 0.680, 0.627 and 0.630, respectively. The AUC of the combined prediction was 0.756. This study identified risk factors for postoperative UTI following ureteroscopic stone surgery and emphasised the importance of stone size, history of diabetes mellitus and preoperative urine culture in the diagnosis.

Comparison of ureteral stent-related symptoms in high-inserted stents with conventional ones

Objective: To assess whether high-inserted urinary stents (HIUS) provide substantial enhancements in patient comfort and overall quality of life, we compared the stent-related symptoms of HIUS and conventional ureteric stents (CUS). Methodology: We randomly assigned 54 patients who received simple ureteroscopic lithotripsy to a high-inserted or standard stent group. Baseline Ureteral Stent Symptom Questionnaire (USSQ) and visual analogue scale pain levels were assessed 2 weeks postoperatively and 4 weeks following stent removal. Also contrasted was subdomain analysis of all Stent-Related Symptoms (SRS) and stent problems. Results: Significant intergroup differences were seen in urinary symptoms, pain index on VAS, and overall health domain scores (p&lt;0.001). No significant difference was seen in the work performance index (p=0.077) or sexual matter score (p=0.064). The HIUS group had significantly higher scores on USSQ subdomains, including frequency, urgency, incomplete emptying, burning at voiding, hematuria grade, difficulties with heavy physical activity, feeling comfortable, resting in bed due to symptoms, decreasing routine activities, and sexual intercourse pain (p&lt;0.001). Patients in both groups who quit sex life owing to stents were similar (p=0.745). Complication rates were similar in both groups. Conclusion: HIUS dramatically reduced stent-related urine discomfort and pain. Thus, HIUS can be employed in clinical practice, especially for short-term stent implantation after simple ureteroscopic lithotripsy.

Verification of surgical factors affecting the efficiency of stone extraction with one-surgeon basketing technique using a f-URSL simulation model.

Stone extraction is an important treatment option when performing flexible ureteroscopic lithotripsy (f-URSL) for upper urinary stones. We used a f-URSL simulator model to investigate surgical factors affecting the efficacy of stone extraction with the one-surgeon basketing technique. This simulator-based study involved eight urologists and eight residents. These participants each performed two tasks, with Flexor (Cook Medical) and Navigator (Boston Scientific) ureteral access sheaths, with and without the M-arm (MC Medical) single-use basket holder, and with models representing both left and right kidneys. The two tasks were to touch each renal calix with the ureteroscope, and to extract stones. As outcomes, we recorded the number of times that the ureteroscope became stuck during insertion, the number of times a stone was dropped during removal, the number of times the basket forceps were opened and closed, and the time required to accomplish each task. The ureteroscope became stuck significantly more often when Navigator was used compared with Flexor overall, and for both urologists and residents (all p<0.01). Stones were dropped significantly more often on the ipsilateral side (kidney on the same side as the operator's hand) than on the contralateral side overall (p=0.01), and the basket forceps were opened and closed significantly more often on the ipsilateral side than on the contralateral side both overall and by residents (all p<0.01). The efficiency of stone extraction during f-URSL with the one-surgeon basketing technique was affected by differences in ureteral access sheath and the kidney side.

The effect of transurethral flexible ureteroscopic lithotripsy on renal function and efficacy in male patients with kidney stones

The effect of transurethral flexible ureteroscopic lithotripsy on renal function and efficacy in male patients with kidney stones

Ureteric Laser Tripsy with and without Stone Cone

Stones may block the ureter causing pain and discomfort. Ureteric laser lithotripsy, a notable breakthrough in urology, has transformed the treatment of urinary tract stones. Objectives: To compare the efficacy of ureteroscopic laser lithotripsy with and without stone cone. Methods: This retrospective analysis was done at LRH Peshawar's urology department from 1st December 2022 to 31th October 2023. Over the time, 50 patients had ureteroscopic holmium laser lithotripsy. Our research comprised adults over 18 with proximal ureteric stones (&gt;10mm) and hydro ureters on CT KUB. Patients were split into two groups. Group A included 27 patients and employed a 7mm stone cone (Boston Scientific Corp, Natick, MA). No stone cone was utilized in group B (23). Results: This prospective research included 50 adults with radiologically confirmed uretric stones in diverse ureteric sites. Male 35 (70%) and female 15 (30%) were 21–68 years old (mean 38.6 years). Stones size varied from 6 to 20 mm, averaging 12.6mm. Proximal stones were 8–20mm (mean 13.9). Mid-ureter stones were 7–18mm (mean 12.6). Lower ureter stones ranged from 6 to 16mm, with a mean of 11.9mm. Ten (20%) patients have normal pelvicalyceal systems. Patients with moderate hydronephrosis were 27 (55%). Conclusions: The use of a stone cone during ureteroscopic lithotripsy is a safe and effective technique for the management of ureteric stones.

The influence of perioperative nursing intervention in patients with ureteral calculi treated with URSL and its correlation to adverse event incidence: A retrospective study

To evaluate the effectiveness of perioperative nursing intervention in patients undergoing ureteroscopic lithotripsy (URSL) for ureteral stones and its implications for the incidence of adverse events, a total of 144 patients with ureteral stones admitted to our hospital from January 2021 to December 2022 were selected for retrospective analysis. They were divided into 2 groups based on their different nursing methods, with 72 patients in each group. The control group (CG) received routine nursing intervention, while the study group (SD) received refined perioperative nursing intervention. The surgical situation, effective stone removal rate, postoperative pain, inflammatory factors, stress response, and incidence of adverse events were compared between the 2 groups. In comparison with the CG, the SD demonstrated a significant reduction in gastrointestinal recovery time, urinary catheter removal time, and hospitalization duration, all presenting statistically significant disparities (P &lt; .05). Notably, the SD exhibited a one-time stone removal rate significantly superior to that of the CG (P &lt; .05). Similarly, the postoperative pain index was significantly lower in the SD (P &lt; .05). Pre- and post-surgical serotonin (5-HT) levels in the SD were markedly lower than in the CG (P &lt; .05). Postoperative levels of Interleukin-10 (IL-10), C-reactive protein (CRP), and white blood cells (WBC) were elevated in both groups, and gradually declined as the patients recovered. However, postoperative levels of IL-10, CRP, and WBC were significantly lower in the SD (P &lt; .05). The SD also showed significantly lower levels of malondialdehyde and higher levels of superoxide dismutase (P &lt; .05). Postoperative levels of cortisol, adrenocorticotropic hormone, and norepinephrine were elevated and progressively returned to normal over time, and were significantly lower in the study group (P &lt; .05). Furthermore, the SD experienced a significant reduction in adverse event incidence compared with the CG (P &lt; .05). Implementing refined perioperative nursing interventions for patients undergoing URSL can effectively decrease the incidence of adverse events, diminish the surgical stimulation of inflammation markers and oxidative stress indicators, and foster patient recovery.

Randomized controlled trial comparing the effectiveness of tamsulosin, tamsulosin with tolterodine and double J stent position in controlling stent related symptoms after ureteroscopic lithotripsy

Background: Objective of the study was to determine the effect of stent position and medications in preventing stent-related symptoms. Methods: This was a prospective study conducted at Meenakshi Mission Hospital and Research Centre Madurai, Tamil Nadu, India. 150 patients who underwent ureteroscopic lithotripsy with indwelling stent were distributed into three groups. On demand analgesics were given to group 1 (n=50), Tamsulosin 0.4 mg daily for group 2 (n=50) and tamsulosin 0.4 mg and tolterodine 4 mg daily for group 3 (n=50). The patients were also subclassified into appropriate or inappropriate group according to stent position. All patients completed various domains of Ureteral stent symptom questionnaire (USSQ) on 1st and 7th postoperative days. Appropriate tests statistics were performed using EPI-Info statistical software package. Results: In control group, patients with appropriate stent position had significantly lower symptom scores than those with inappropriate stent position (p value~0.0001) in all domains of USSQ except global quality of life score (p value=0.08). Addition of tamsulosin 0.4 mg (group 2) had superadded beneficial effect in appropriate position group, but not in patients with inappropriately positioned stents. Patients taking both tamsulosin 0.4 mg and tolterodine 4 mg (group 3) had no significant improvement in symptom scores in appropriate position group (all domains of USSQ) and inappropriate position group (most domains). Conclusions: Appropriate stent position is the most important independent factor than medications in preventing stent related symptoms; tamsulosin has superadded benefit in patients with correctly positioned stents.

Efficacy of Robot-Assisted Ureteroureterostomy in Patients with Complex Ureteral Stricture after Ureteroscopic Lithotripsy.

Ureteral stricture (US) postureteroscopic lithotripsy (URSL) has emerged as a severe complication with the widespread use of laser technology. Furthermore, managing a complex US is challenging. Therefore, this study evaluated the efficacy of robot-assisted ureteroureterostomy (RAUU) in addressing US post-URSL and analyzed the pathology of transected ureteral tissues to identify the risk factors for US. we conducted a prospective cohort study on patients who underwent RAUU for URSL-induced US from April 2021 to May 2023. A total of 14 patients with a mean age of 49.8 years were included in this study. The mean stricture length on radiography was 22.66 ± 7.38 mm. Nine (64.2%) patients had experienced failure with previous interventions. The overall success rate was 92.9%, both clinically and radiographically, without major complications, at a mean follow-up of 12.8 months. The pathological findings revealed microcalcifications and a loss of ureteral mucosa in 57.1% and 28.6% of patients, respectively. The RAUU technique shows promise as a viable option for US post-URSL in appropriately selected patients despite severe pathological changes in the ureter. Therefore, the migration of microcalcifications to the site of ureteral perforation may be a significant factor contributing to US development.