Effectiveness of ureteroscopy-assisted retrograde nephrostomy (UARN) for percutaneous nephrolithotomy (PCNL).

Objective: To determine the impact of ureteroscopy-assisted retrograde nephrostomy (UARN) during percutaneous nephrolithotomy (PCNL).

Materials And Methods: From April 2009 to September 2011, a total of 50 patients underwent PCNL for large renal stones (stone burden >2 cm). We performed UARN in the Galdakao-modified Valdivia position for 27 patients (UARN PCNL) and ultrasonography-assisted percutaneous nephrostomy in the prone position for 23 patients (prone PCNL).

Ureteroscopy-assisted retrograde nephrostomy for percutaneous nephrolithotomy after urinary diversion.

A 33-year-old male with an ileal conduit was referred to our department for the treatment of left renal calculi. After inserting a ureteral access sheath, a ureteroscopy-assisted retrograde nephrostomy was made. Percutaneous nephrolithotomy was successfully achieved using this nephrostomy.

Amplatz sheath for cystolithotripsy using Ho: YAG laser in female patients.

Objective: To evaluate the effectiveness of cystoscopic lithotripsy, we performed Amplatz sheath technique using Ho: YAG laser. Maheshwari first reported the use of an Amplatz sheath in the female urethra in 1998, and Okeke et al reported the use of an Amplatz sheath for male patients during cystolithotripsy in 2004. The usefulness of the holmium (Ho): yttrium aluminum garnet (YAG) laser lithotripsy is widely accepted, even for large bladder calculi.

Ureteroscopy assisted retrograde nephrostomy for complete staghorn renal calculi.

Complete staghorn calculi are typically managed with percutaneous nephrolithotomy (PCNL). However, dilating nephrostomy and inserting a nephro access sheath can be difficult to perform without hydronephrosis. We reported the procedure of ureteroscopy-assisted retrograde nephrostomy (UARN) during PCNL.

Ureteroscopy-Assisted Retrograde Nephrostomy (UARN) after Anatrophic Nephrolithotomy.

Introduction. Open surgical anatrophic nephrolithotomy (ANL) had been the standard treatment for large renal calculi prior to the development of endoscopic devices and endoscopic techniques. A previous report described the efficacy of ureteroscopy-assisted retrograde nephrostomy (UARN) and presented a case of renal calculi successfully treated with UARN during percutaneous nephrolithotomy (PCNL) in a patient after ANL.

Changing to a loop-type ureteral stent decreases patients' stent-related symptoms.

The first indwelling ureteral splint was described in 1967. A ureteral stent can cause unpleasant side effects, such as urinary frequency, urgency, incontinence, hematuria, bladder pain and flank pain, which have a negative impact on a patient's quality of life. It is necessary to minimize the amount of material in the bladder in order to decrease stent-related symptoms.

Ureteroscopy-assisted retrograde nephrostomy for lower calyx calculi in horseshoe kidney: two case reports.

Introduction: We previously reported on the effectiveness of ureteroscopy-assisted retrograde nephrostomy during percutaneous nephrolithotomy and report two cases of lower calyx calculi in horseshoe kidney that were successfully treated with ureteroscopy-assisted retrograde nephrostomy. During the ureteroscopy-assisted retrograde nephrostomy procedure, a ureteroscope is advanced in the desired calyx and a Lawson retrograde nephrostomy puncture wire is inserted. The wire is advanced through the calyx to exit the skin.

Preoperative stenting for ureteroscopic lithotripsy for a large renal stone.

A large renal stone can be treated ureteroscopically, but the treatment often requires more than one procedure. The use of stenting before ureteroscopy was recently reported. The present study investigated the effectiveness of preoperative stenting before ureteroscopic lithotripsy for large (>15 mm) renal stones.

Encrusted Ureteral Stent Retrieval Using Flexible Ureteroscopy with a Ho: YAG Laser.

A 23-year-old female had bilateral ureteral stents placed due to bilateral renal stones and hydronephrosis. The bilateral ureteral stents were changed every 3 months. A kidney ureter bladder (KUB) film showed left encrustation along the ureteral stent thus necessitating removal; however, the ureteral stent could not be removed cystoscopically.

Stone area and volume are correlated with operative time for cystolithotripsy for bladder calculi using a holmium: yttrium garnet laser.

Objective: This study investigated the correlation between the operation time and the stone size as determined by multiple modalities and the computed tomography (CT) densities of bladder calculi using holmium: yttrium garnet (Ho:YAG) laser lithotripsy.

Material And Methods: A total of 68 patients underwent cystolithotripsy from March 2010 to October 2011. Thirty-six of these patients underwent cystolithotripsy using a Ho:YAG laser for bladder calculi by a single surgeon.

Which is the best method to estimate the actual ureteral length in patients undergoing ureteral stent placement?

Objectives: To define the best modality for estimating ureteral length in patients undergoing ureteral stent placement.

Methods: This study enrolled 151 patients (169 ureters) undergoing stent insertion. In all of them, an intravenous urography and non-contrast computed tomography were carried out.

Ureteral stent exchange under fluoroscopic guidance using the crochet hook technique in women.

Purpose: We developed a method for ureteral stent exchange in female patients under fluoroscopic guidance using a crochet hook technique (CHEX).

Patients And Methods: A total of 45 female patients (51 stents) underwent exchange of ureteral stents. In these patients, 21 ureteral stents were exchanged using CHEX.

Ureteral stent retrieval using the crochet hook technique in females.

Introduction: We developed a method for ureteral stent removal in female patients that requires no cystoscopy or fluoroscopic guidance using a crochet hook. In addition, we also investigated the success rate, complications and pain associated with this procedure.

Methods: A total of 40 female patients (56 stents) underwent the removal of ureteral stents.

Ureteroscopy assisted retrograde nephrostomy: a new technique for percutaneous nephrolithotomy (PCNL).

Unlabelled: Study Type - Therapy (case series). Level of Evidence 4. What's known on the subject? and What does the study add? Retrograde nephrostomy was first developed by Lawson et al.

[Clinical assessment of ammonium acid urate urinary calculi].

We investigated the patients with ammonium acid urate (AAU) calculi in relation to dietary history, habit and lifestyle. From April, 2002 to March, 2009, AAU calculi were found in 9 patients (0.66) out of 1,365 cases of stones.

[Semen cryopreservation for patients with malignant or non-malignant disease: our 14-year experience].

We retrospectively analyzed 163 patients who had been cryopreservating their sperm one year or more. They consisted of 72, 76 and 15 patients with a germ cell tumor, hematologic cancer and other diseases, respectively. Forty-eight patients (29.

[Studies on cefozopran in the pediatric field].

Pharmacokinetic and clinical evaluations of cefozopran (CZOP) were carried out in pediatric patients. The following results were obtained: 1. Upon 30-minute intravenous drip infusion at a dose of 20mg/kg, plasma concentrations of CZOP reached their peaks at the end of drip infusion with an average value of 77.