The Experts below are selected from a list of 243 Experts worldwide ranked by ideXlab platform
Prem Puri - One of the best experts on this subject based on the ideXlab platform.
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treatment of vesicoUreteric reflux by endoscopic injection of teflon
The Journal of Urology, 2002Co-Authors: B Odonnell, Prem PuriAbstract:Thirteen girls with grade III–V vesicoUreteric reflux were treated by endoscopic injection of Teflon paste behind the intravesical Ureter. Fourteen of the 18 treated Ureters showed complete absence of reflux after one injection of Teflon. Three Ureters required a second injection of Teflon for successful treatment of the reflux. One Ureter with grade IV reflux was converted to grade II reflux.Properly carried out, this procedure corrects reflux.: It takes less than 15 minutes, may be done as a day procedure, and avoids open surgery. There have been no complications.(Reprinted with permission from Br Med J, 289: 7–9, 1984)
Jeffrey S Hardesty - One of the best experts on this subject based on the ideXlab platform.
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indocyanine green for intraoperative localization of Ureter
American Journal of Obstetrics and Gynecology, 2014Co-Authors: Sam Siddighi, Junchan Yune, Jeffrey S HardestyAbstract:Intraurethral injection of indocyanine green (ICG; Akorn, Lake Forest, IL) and visualization under near-infrared (NIR) light allows for real-time delineation of the Ureter. This technology can be helpful to prevent iatrogenic Ureteral injury during pelvic surgery. Patients were scheduled to undergo robot-assisted laparoscopic sacrocolpopexy. Before the robotic surgery started, the tip of a 6-F Ureteral catheter was inserted into the Ureteral orifice. Twenty-five milligrams of ICG was dissolved in 10-mL of sterile water and injected through the open catheter. The same procedure was repeated on the opposite side. The ICG reversibly stained the inside lining of the Ureter by binding to proteins on urothelial layer. During the course of robotic surgery, the NIR laser on the da Vinci Si surgical robot (Intuitive Surgical, Inc, Sunnyvale, CA) was used to excite ICG molecules, and infrared emission was captured by the da Vinci filtered lens system and electronically converted to green color. Thus, the Ureter fluoresced green, which allowed its definitive identification throughout the entire case. In all cases of >10 patients, we were able to visualize bilateral Ureters with this technology, even though there was some variation in brightness that depended on the depth of the Ureter from the peritoneal surface. For example, in a morbidly obese patient, the Ureters were not as bright green. There were no intraoperative or postoperative adverse effects attributable to ICG administration for up to 2 months of observation. In our experience, this novel method of intraurethral ICG injection was helpful to identify the entire course of Ureter and allowed a safe approach to tissues that were adjacent to the urinary tract. The advantage of our technique is that it requires the insertion of just the tip of Ureteral catheter. Despite our limited cohort of patients, our findings are consistent with previous reports of the excellent safety profile of intravenous and intrabiliary ICG. Intraurethral injection of ICG and visualization under NIR light allows for real-time delineation of the Ureter. This technology can be helpful to prevent iatrogenic Ureteral injury during pelvic surgery.
M Moroni - One of the best experts on this subject based on the ideXlab platform.
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inguino scrotal hernia of a double district Ureter case report and literature review
Hernia, 2005Co-Authors: Luca Bertolaccini, G Giacomelli, R E Bozzo, L Gastaldi, M MoroniAbstract:Ureteral hernia is uncommon and usually misdiagnosed. From an anatomic point of view, we can distinguish between two Uretero-inguinal hernias: intraperitoneal and extraperitoneal. Ureter inguinal hernias are nearly always indirect. This kind of hernia can include the Ureter alone or, frequently, other abdominal sliding organs within the hernia sac (bladder, bowel tracts, etc.). Kidneys and urinary tracts present normal anatomic conformation, although renal ptosis may be found. As of July 2004, 139 cases of Ureteral hernia had been described in the literature. Here we report a case of inguino-scrotal herniation of double district Ureter and review the current literature to analyze the main clinical characteristics of this pathology and to establish pitfalls.
Shigemi Kawamura - One of the best experts on this subject based on the ideXlab platform.
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Ureteral function at the Ureterovesical junction. Action potentials of the canine intramural Ureter during bladder filling or bladder contraction
The Japanese Journal of Urology, 1991Co-Authors: Shigemi Kawamura, Kouji Kumasaka, Kazuo Noro, Ohhori T, Kazunori Suga, Yasushi Suzuki, Takashi Kubo, Susumu NumasatoAbstract:: The relationship between bladder movements and the intramural Ureter was studied in the dog by recording electromyograms of the intramural and extravesical Ureters recorded during bladder filling and contraction. Bladder filling was achieved by instilling physiological saline at a rate of 10 ml/min to a volume of 5 ml/kg, while bladder contraction was induced by electrical stimulation. For electromyography, an electrode was inserted transperitoneal into both the extravesical Ureter and the intramural Ureter after it had been separated from the extravesical Ureter. A cystostomy for the instillation of water and another cystostomy for the measurement of intravesical pressure were also made in the bladder. During bladder filling at an intravesical pressure of about 10 cmH2O, the frequency of the action potentials in the intramural Ureter showed no significant difference to those in the extravesical Ureter. In addition, during bladder contraction at a greatly increased intravesical pressure of about 5 times the precontraction level, the frequency of the action potentials in the intramural Ureter was not significant by different from those in the extravesical Ureter, and also from its own precontraction value. The above findings suggest that action potentials in the intramural Ureter are not affected by bladder movements such as filling or contraction, and that the Ureter continues to actively transport urine to the bladder during such movements.
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The study on the function of the intramural portion of the Ureter. The motion of the intramural portion of the Ureter in dogs
Journal of Smooth Muscle Research, 1991Co-Authors: Kouji Kumasaka, Shigemi KawamuraAbstract:The present investigation was performed in order to clarify whether the motion of the intramural portion of the Ureter is passive or active.In Experiment I, electromyograms of the extravesical and intramural portions of the Ureter were recorded using bipolar suspended electrodes and bipolar needle electrodes for 52 Ureters in 26 adult mongrel dogs to study the relationship between both portions of the Ureters in the nondiuretic and diuretic state.In Experiment II, using 14 Ureters in 10 adult mongrel dogs, electromyograms were recorded and the local forces of the Ureteral walls of the extravesical and intramural portions were measured with a special needle electrode concurrently. Results:(1) Experiment I demonstrated in the nondiuretic and diuretic state, (1) no significant differences in the Ureteral discharge frequency between the extravesical and intramural portion of the Ureters, and (2) a 1: 1 correspondence in the extravesical and intramural action potentials.(2) Increases were observed in the local forces of the Ureteral walls of the intramural portion of the Ureters following action potentials.From these experimental results, it was suggested that the intramural portion of the Ureter actively moves due to muscular excitation from the upper Ureter and participates in urine transport.
B Odonnell - One of the best experts on this subject based on the ideXlab platform.
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treatment of vesicoUreteric reflux by endoscopic injection of teflon
The Journal of Urology, 2002Co-Authors: B Odonnell, Prem PuriAbstract:Thirteen girls with grade III–V vesicoUreteric reflux were treated by endoscopic injection of Teflon paste behind the intravesical Ureter. Fourteen of the 18 treated Ureters showed complete absence of reflux after one injection of Teflon. Three Ureters required a second injection of Teflon for successful treatment of the reflux. One Ureter with grade IV reflux was converted to grade II reflux.Properly carried out, this procedure corrects reflux.: It takes less than 15 minutes, may be done as a day procedure, and avoids open surgery. There have been no complications.(Reprinted with permission from Br Med J, 289: 7–9, 1984)
