No AccessJournal of UrologyPediatric Urology1 Dec 1998RESERVOIR CALCULI: A COMPARISON OF RESERVOIRS CONSTRUCTED FROM STOMACH AND OTHER ENTERIC SEGMENTS MARTIN KAEFER, W. HARDY HENDREN, STUART B. BAUER, PETER GOLDENBLATT, CRAIG A. PETERS, ANTHONY ATALA, and ALAN B. RETIK MARTIN KAEFERMARTIN KAEFER , W. HARDY HENDRENW. HARDY HENDREN , STUART B. BAUERSTUART B. BAUER , PETER GOLDENBLATTPETER GOLDENBLATT , CRAIG A. PETERSCRAIG A. PETERS , ANTHONY ATALAANTHONY ATALA , and ALAN B. RETIKALAN B. RETIK View All Author Informationhttps://doi.org/10.1016/S0022-5347(01)62290-0AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: The intestinal augmented bladder has an increased propensity to form urinary calculi. Predisposing risk factors include chronic bacteriuria, urinary stasis and mucus production. Gastric reservoirs have negligible mucus production and the ability to acidify the urine. We determined whether they also have a decreased incidence of stones. Materials and Methods: We retrospectively reviewed the records of all patients undergoing augmentation cyptoplasty (215) or creation of a freestanding reservoir (44) between May 1976 and March 1996. Of these cases 83 were augmented with stomach and 179 were constructed from other intestinal segments, (that is ileal, ileocecal, sigmoid and/or a combination of these). Presenting diagnosis, patient age, gender, additional surgical procedures, interval to stone formation and calculous composition were recorded. Patients were excluded from study when there was less than 1 year of followup, as were those with renal or pre-augmentation bladder calculi. Results: Stones formed in 32 of 207 patients (15%) after an average interval of 3.6 years (range 0.5 to 8.6). The majority of stones were composed of struvite (magnesium ammonium phosphate). Reservoirs containing gastric segments were significantly less likely to form calculi than those augmented with other intestinal segments (2 of 70 versus 30 of 137, p <0.0001 Fisher's exact test). Seven additional patients with pre-augmentation bladder stones who subsequently underwent gastrocystoplasty remain stone-free at an average followup of 3.0 years. Conclusions: Calculous formation is rare in reservoirs that incorporate a gastric segment. In patients with gastric augmentation stones appear only to develop when the patient is on histamine blockade or has a propensity to form stones that only favor an acidic environment, such as uric acid. References 1 : Continent urinary diversion: the Children's Hospital experience. J. Urol.1997; 157: 1394. Link, Google Scholar 2 : Lithogenic properties of enterocystoplasty. J. Urol.1992; 148: 575. Link, Google Scholar 3 : Urolithiasis in children following augmentation cystoplasty. J. Urol.1993; 150: 726. Link, Google Scholar 4 : Ureteral bladder augmentation. J. Urol.1993; 150: 716. Link, Google Scholar 5 : Bladder autoaugmentation. Urol. Clin. N. Amer.1996; 23: 323. Google Scholar 6 : Gastrocystoplasty in dogs. Aust. New Zeal. J. Surg.1972; 41: 272. Google Scholar 7 : Gastrocystoplasty: an alternative solution to the problem of urological reconstruction in the severely compromised patient. J. Urol.1988; 140: 1152. Link, Google Scholar 8 : Gastrocystoplasty in children. Eur. Urol.1994; 25: 89. Google Scholar 9 : The Mitrofanoff principle in urinary reconstruction. J. Urol.1993; 150: 1875. Link, Google Scholar 10 : Proceedings and abstracts of 1st International Meeting, Lund, Sweden, June 10-12, 1992. Scand. J. Urol. Nephrol.1992; 142. Google Scholar 11 : Treatment of bladder dysfunction in children with end-stage renal disease. J. Ped. Surg.1992; 27: 170. Google Scholar 12 : Bladder exstrophy: increase in capacity following epispadias repair. J. Urol.1989; 142: 525. Link, Google Scholar 13 : Stomach in combination with other intestinal segments in pediatric lower urinary tract reconstruction. J. Urol.1995; 154: 1162. Link, Google Scholar 14 : The effect of gastric augmentation on bladder function. J. Urol.1993; 149: 1099. Link, Google Scholar 15 : Bladder augmentation: experience with 129 children and young adults. J. Urol.1990; 144: 445. Link, Google Scholar 16 : Cloacal exstrophy: experience with 20 cases. J. Ped. Surg.1993; 28: 1360. Google Scholar 17 : The pathophysiology of hyperchloremic metabolic acidosis after urinary diversion through intestinal segments. Surgery1985; 98: 561. Medline, Google Scholar 18 : Uric acid stone and gastric bladder augmentation. J. Urol.1995; 153: 1976. Link, Google Scholar 19 : Comparison of various gastrointestinal segments for bladder augmentation. J. Urol.1992; 147: 253A. abstract 157. Google Scholar 20 : Percutaneous pouch lithotripsy in continent urinary diversions with narrowed Mitrofanoff conduit. Brit. J. Urol.1994; 73: 316. Google Scholar 21 : Endoscopic management of bladder calculi following augmentation cystoplasty. Urology1994; 44: 902. Crossref, Medline, Google Scholar From the Departments of Surgery and Urology, Children's Hospital, Boston, Massachusetts© 1998 by American Urological Association, Inc.FiguresReferencesRelatedDetailsCited bySzymanski K, Misseri R, Whittam B, Hollowell N, Hardacker R, Swenson C, Kaefer M, Rink R and Cain M (2020) Additional Surgeries after Bladder Augmentation in Patients with Spina Bifida in the 21st CenturyJournal of Urology, VOL. 203, NO. 6, (1207-1213), Online publication date: 1-Jun-2020.Sloff M, Simaioforidis V, de Vries R, Oosterwijk E and Feitz W (2014) Tissue Engineering of the Bladder—Reality or Myth? A Systematic ReviewJournal of Urology, VOL. 192, NO. 4, (1035-1042), Online publication date: 1-Oct-2014.Szymanski K, Misseri R, Whittam B, Amstutz S, Kaefer M, Rink R and Cain M (2013) Cutting for Stone in Augmented Bladders—What is the Risk of Recurrence and is it Impacted by Treatment Modality?Journal of Urology, VOL. 191, NO. 5, (1375-1380), Online publication date: 1-May-2014.Nguyen H (2018) Is Bladder Neck Transection Ever Really a Success?Journal of Urology, VOL. 181, NO. 1, (15-16), Online publication date: 1-Jan-2009.Metcalfe P, Cain M, Kaefer M, Gilley D, Meldrum K, Misseri R, King S, Casale A and Rink R (2018) What is the Need for Additional Bladder Surgery After Bladder Augmentation in Childhood?Journal of Urology, VOL. 176, NO. 4S, (1801-1805), Online publication date: 1-Oct-2006.Kiddoo D, Canning D, Snyder H and Carr M (2018) Urethral Dilation as Treatment for Neurogenic BladderJournal of Urology, VOL. 176, NO. 4S, (1831-1834), Online publication date: 1-Oct-2006.DeFOOR W, MINEVICH E, REDDY P, SEKHON D, POLSKY E, WACKSMAN J and SHELDON C (2018) BLADDER CALCULI AFTER AUGMENTATION CYSTOPLASTY: RISK FACTORS AND PREVENTION STRATEGIESJournal of Urology, VOL. 172, NO. 5, (1964-1966), Online publication date: 1-Nov-2004.Vajda P, Kaiser L, Magyarlaki T, Farkas A, Vastyan A and Pinter A (2018) Histological Findings After Colocystoplasty And GastrocystoplastyJournal of Urology, VOL. 168, NO. 2, (698-701), Online publication date: 1-Aug-2002.KAEFER M, PABBY A, KELLY M, DARBEY M and BAUER S (2018) IMPROVED BLADDER FUNCTION AFTER PROPHYLACTIC TREATMENT OF THE HIGH RISK NEUROGENIC BLADDER IN NEWBORNS WITH MYELOMENINGOCELEJournal of Urology, VOL. 162, NO. 3 Part 2, (1068-1071), Online publication date: 1-Sep-1999.KURZROCK E, BASKIN L and KOGAN B (2018) GASTROCYSTOPLASTY: LONG-TERM FOLLOWUPJournal of Urology, VOL. 160, NO. 6 Part 1, (2182-2186), Online publication date: 1-Dec-1998. Volume 160Issue 6 Part 1December 1998Page: 2187-2190 Advertisement Copyright & Permissions© 1998 by American Urological Association, Inc.MetricsAuthor Information MARTIN KAEFER More articles by this author W. HARDY HENDREN More articles by this author STUART B. BAUER More articles by this author PETER GOLDENBLATT More articles by this author CRAIG A. PETERS More articles by this author ANTHONY ATALA More articles by this author ALAN B. RETIK More articles by this author Expand All Advertisement PDF downloadLoading ...

Bladder stones

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Bladder augmentation

10.1016/s0022-5347(01)62290-0

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Citations (124)

LAPAROSCOPY IN THE CHILD: SPECIFIC ISSUES ■

CRC Press eBooks (2006)

Craig A. Peters

The distinction between adult and pediatric urologic laparoscopy begins with divergent indications, reflecting the different patterns of urologic disease between adults and children. The need for laparoscopic procedures in pediatric urologic practice is different from adults, with some elements of overlap.

10.3109/9781420021202-74

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Long-Term Urological Response of Neonates With Myelodysplasia Treated Proactively With Intermittent Catheterization and Anticholinergic Therapy

The Journal of Urology (1995)

Robert A. Edelstein Stuart B. Bauer Mary D. Kelly Mary Darbey Craig A. Peters

Urinary tract management in children with myelodysplasia is controversial. Some advocate observation alone, while others believe that the prophylactic institution of intermittent catheterization and anticholinergic therapy may help to prevent deterioration.A nonrandomized prospective study was instituted to compare the urological outcomes of a cohort of children who were at risk for urological deterioration on the basis of bladder-sphincter dyssynergia and/or high filling or voiding pressures. Those at risk were observed until deterioration occurred, or were placed on prophylactic intermittent catheterization with or without anticholinergic medication.Of 44 children at risk 35 followed by observation alone had urinary tract deterioration, whereas only 3 of 20 at risk treated with prophylactic intermittent catheterization had deterioration with time.Proactive bladder treatment significantly reduced the incidence of upper urinary tract deterioration and need for surgical intervention.

Dyssynergia

Urinary catheterization

10.1016/s0022-5347(01)66914-3

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Laparoscopic Correction of Vesicoureteral Reflux

The Journal of Urology (1993)

Anthony Atala Louis R. Kavoussi David S. Goldstein Alan B. Retik Craig A. Peters

Major advances have been made in the area of laparoscopic surgery. The advantages of this approach include smaller incisions, shorter hospitalizations, a more rapid convalescence and decreased postoperative discomfort. To explore the technical feasibility of performing antireflux surgery laparoscopically, we conducted a pilot study in 4 mini-pigs in which bilateral vesicoureteral reflux had been created surgically. We applied a modification of the Lich extravesical ureteral approach to perform laparoscopic antireflux surgery. All mini-pigs underwent successful unilateral mobilization, creation of a bladder wall trough and creation of a new ureteral tunnel laparoscopically. Examinations were performed postoperatively, and then serially at 1, 2, 3 and 5 months after repair. Fluoroscopic cystograms demonstrated the resolution of reflux in the corrected ureters and persistence of reflux in the uncorrected control ureters in all animals. Excretory urography showed no evidence of obstruction. Laparoscopic correction of vesicoureteral reflux appears to be technically feasible in the animal model. Long-term followup is necessary to determine the possible applicability of this technique in humans.

10.1016/s0022-5347(17)35604-5

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PEDIATRIC RETROPERITONEOSCOPIC NEPHRECTOMY USING 2 MM. INSTRUMENTATION

The Journal of Urology (1999)

Joseph G. Borer Lars J. Cisek Anthony Atala David A. Diamond Alan B. Retik

No AccessJournal of UrologyPEDIATRIC UROLOGY1 Nov 1999PEDIATRIC RETROPERITONEOSCOPIC NEPHRECTOMY USING 2 MM. INSTRUMENTATION JOSEPH G. BORER, LARS J. CISEK, ANTHONY ATALA, DAVID A. DIAMOND, ALAN B. RETIK, and CRAIG A. PETERS JOSEPH G. BORERJOSEPH G. BORER More articles by this author , LARS J. CISEKLARS J. CISEK More articles by this author , ANTHONY ATALAANTHONY ATALA More articles by this author , DAVID A. DIAMONDDAVID A. DIAMOND More articles by this author , ALAN B. RETIKALAN B. RETIK More articles by this author , and CRAIG A. PETERSCRAIG A. PETERS More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(05)68224-9AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: We describe several modifications of the retroperitoneoscopic approach to nephrectomy for benign renal disease, including the use of 2 mm. instrumentation and prone patient positioning. Materials and Methods: A total of 14 children underwent retroperitoneoscopic nephrectomy in the prone position. An inflatable dissecting device was inserted into the retroperitoneum after a small muscle splitting incision was made at the lateral border of the sacrospinalis muscle approximately 1 cm. below the costovertebral angle. After inflation the dissecting device was replaced with a 5 mm. cannula and pneumoretroperitoneum was maintained with carbon dioxide insufflation. Two 2 mm. trocars were then placed under endoscopic guidance. Dissection was performed using 2 mm. instrumentation and the specimen was retrieved through the largest port site. Results: Nephrectomy was performed in 9 girls and 5 boys 3 months to 9.8 years old. The preoperative diagnosis included chronic pyelonephritis with minimal renal function, reflux with a nonfunctioning kidney, multicystic dysplastic kidney, an upper pole dysplastic moiety with an associated ureterocele and a dysplastic kidney with a vaginal ectopic ureter. Mean operative time for retroperitoneoscopic nephrectomy was 142 minutes with an estimated blood loss of less than 15 ml. Contralateral ureteral reimplantation was performed after retroperitoneoscopic dissection in 5 patients. Overall average hospital stay was 2 days and there were no complications. Conclusions: Several modifications of the retroperitoneal approach, including the use of prone patient positioning and 2 mm. instrumentation for visualization and dissection, may improve the safety and efficacy of this technique in children. References 1 : Transperitoneal nephrectomy for benign disease of the kidney: a comparison of laparoscopic and open surgical techniques. Urology1994; 43: 607. Google Scholar 2 : Laparoscopic renal surgery in children. J. Urol.1994; 151: 735. Link, Google Scholar 3 : Laparoscopy in pediatric urology: challenge and opportunity. Sem. Ped. Surg.1996; 5: 16. Google Scholar 4 : Retroperitoneoscopy: anatomical rationale for direct retroperitoneal access. J. Urol.1994; 152: 2008. Link, Google Scholar 5 : Retroperitoneoscopy. AUA Update Series1997; volume XVI. lesson 40. Google Scholar 6 : Retroperitoneal and pelvic extraperitoneal laparoscopy: an international perspective. Urology1998; 52: 566. Crossref, Medline, Google Scholar 7 : Retroperitoneoscopy: experience with 200 cases. J. Urol.1998; 160: 1265. Link, Google Scholar 8 : Laparoscopic operative retroperitoneoscopy: use of a new device. J. Urol.1992; 148: 1137. Link, Google Scholar 9 : Retroperitoneal laparoscopic nephrectomy and other procedures in the upper retroperitoneum using a balloon dissection technique. Eur. Urol.1994; 25: 229. Google Scholar 10 : Access technique for retroperitoneoscopy. J. Urol.1996; 156: 1120. Link, Google Scholar 11 : Retroperitoneal laparoscopic nephrectomy: initial case report. J. Urol.1993; 149: 103. Link, Google Scholar 12 : Retroperitoneoscopy: the Washington University Medical School experience. Urology1994; 43: 446. Google Scholar 13 : Retroperitoneal laparoscopic nephrectomy in children. J. Urol.1995; 153: 1966. Link, Google Scholar 14 : Laparoscopic retroperitoneal partial nephrectomy. J. Urol.1994; 152: 1539. Link, Google Scholar 15 : Initial experience with retroperitoneoscopic nephroureterectomy: use of a double-balloon technique. Urology1995; 46: 747. Google Scholar 16 : Laparoscopic nephrectomy for benign disease: comparison of the transperitoneal and retroperitoneal approaches. J. Endourol.1996; 10: 45. Google Scholar 17 : Retroperitoneal nephrectomy: comparison of laparoscopy with open surgery. World J. Surg.1996; 20: 713. Google Scholar 18 : Retroperitoneal laparoscopic nephrectomy of native kidneys in renal transplant recipients. Transplantation1997; 64: 89. Google Scholar 19 : Needlescopic urology: incorporating 2-mm instruments in laparoscopic surgery. Urology1998; 52: 187. Google Scholar 20 : Retroperitoneal laparoscopic nephrectomy. Urol. Clin. N. Amer.1998; 25: 43. Google Scholar From the Department of Urology, Children’s Hospital and Harvard Medical School, Boston, Massachusetts© 1999 by American Urological Association, Inc.FiguresReferencesRelatedDetailsCited byLEE R, RETIK A, BORER J, DIAMOND D and PETERS C (2018) PEDIATRIC RETROPERITONEAL LAPAROSCOPIC PARTIAL NEPHRECTOMY: COMPARISON WITH AN AGE MATCHED COHORT OF OPEN SURGERYJournal of Urology, VOL. 174, NO. 2, (708-712), Online publication date: 1-Aug-2005.Borzi P and Yeung C (2018) Selective Approach for Transperitoneal and Extraperitoneal Endoscopic Nephrectomy in ChildrenJournal of Urology, VOL. 171, NO. 2, (814-816), Online publication date: 1-Feb-2004.EL-GHONEIMI A, SAUTY L, MAINTENANT J, MACHER M, LOTTMANN H and AIGRAIN Y (2018) LAPAROSCOPIC RETROPERITONEAL NEPHRECTOMY IN HIGH RISK CHILDRENJournal of Urology, VOL. 164, NO. 3 Part 2, (1076-1079), Online publication date: 1-Sep-2000.YAO D and POPPAS D (2018) A CLINICAL SERIES OF LAPAROSCOPIC NEPHRECTOMY, NEPHROURETERECTOMY AND HEMINEPHROURETERECTOMY IN THE PEDIATRIC POPULATIONJournal of Urology, VOL. 163, NO. 5, (1531-1535), Online publication date: 1-May-2000. Volume 162 Issue 5 November 1999 Page: 1725-1730 Advertisement Copyright & Permissions© 1999 by American Urological Association, Inc.KeywordskidneyendoscopynephrectomyminiaturizationMetrics Author Information JOSEPH G. BORER More articles by this author LARS J. CISEK More articles by this author ANTHONY ATALA More articles by this author DAVID A. DIAMOND More articles by this author ALAN B. RETIK More articles by this author CRAIG A. PETERS More articles by this author Expand All Advertisement PDF downloadLoading ...

Instrumentation

10.1016/s0022-5347(05)68224-9

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Citations (54)

Single Nucleotide Polymorphisms as Predictors for Development of Erectile Dysfunction in African-American Men Treated With Radiotherapy for Prostate Cancer

International Journal of Radiation Oncology*Biology*Physics (2007)

Julian O. Moore Richard G. Stock Jamie A. Cesaretti Nelson N. Stone W. Li

10.1016/j.ijrobp.2007.07.014

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The Application of Reliability Based Methods in the Optimisation of Reeled Rigid Pipeline Wall Thickness Requirements

Daniel Smith Craig A. Peters Subhajit Lahiri

Reel-lay is a fast and cost-effective means for the installation of subsea flowlines and Pipe-In-Pipe systems with outer diameters up to 18”. Pipelines installed by the reel lay method are plastically deformed during installation. The most critical step in the installation of a reeled pipeline occurs at the spool base, when the assembled pipeline is spooled on to the hub of the reel. The nominal level of deformation is dictated by the vessel equipment geometry, applied back tension, and pipe dimensions. Localised increases in deformation are caused by mismatches in bending stiffness between adjacent pipes. The mismatch potential is dictated by the natural variation of yield strength and by dimensional variation that is inherent to linepipe manufacturing processes. Reliability based assessments are commonly applied in the assessment of minimum acceptable wall thickness for reeling. These assessments enable the minimum acceptable wall thickness to be determined with a defined target reliability level, assessing mismatches based upon distributions of wall thickness and yield strength. The mismatch parameter calculation method and the definition of appropriate acceptance criteria are the two most important factors in reeling assessments. Neither of these two factors has been specified in a pipeline design code or a recommended practice available in the public domain. However, there is an increasing level of familiarity in industry; mismatch calculation methods and strain or ovality based acceptance criteria, defined by installation contractors are gaining widespread acceptance. This paper presents a review of the application of reliability based methods currently under use, focusing on mismatch calculation methods, acceptance criteria, and probability of failure calculation methods. Minimisation of costs is of particular importance in the current oil and gas industry climate. Because of this, the ability to specify an optimum wall thickness enables installation contractors to provide more cost effective reeled rigid pipeline solutions. After reviewing the subject matter and existing body of work this paper looks in detail at the deformation responses and failure modes for a range of sizes of reeled pipelines with mismatches. The assessment of deformation responses demonstrates a significant level of conservatism in recently proposed acceptance criteria that is based upon averaged axial strain levels. This conservatism is quantified by probability of failure calculations and provides a strong justification for further optimisation of the minimum wall thickness for reeling. Finally, the beneficial effect of increased reeling tension is quantified in terms of its effect upon probability of failure.

Subsea

Ovality

Tension (geology)

10.1115/omae2018-77865

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Neue Laboratoriumspparate

Angewandte Chemie (1895)

Craig A. Peters Rost

10.1002/ange.18950082003

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