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Renal Pelvic Pressure

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https://www.readbyqxmd.com/read/28816077/in-vitro-evaluation-of-the-occlusive-properties-of-the-artventive-endoluminal-occlusion-system-occlusion-device-for-transrenal-ureteral-occlusion
#1
Daniel Kuetting, Carsten Meyer, Hans Heinz Schild, Claus Christian Pieper
PURPOSE: Current techniques for percutaneous ureteral occlusion are either technically difficult or not satisfactory because of frequent ureteral recanalization. The purpose of this in vitro study was to evaluate the occlusive properties of an "off the shelf" solution (Endoluminal Occlusion System [EOS™]; ArtVentive Medical Group, Inc., Carlsbad, CA) for transrenal ureteral occlusion. MATERIALS AND METHODS: Both 8 and 11 mm expanded polytetrafluoroethylene-covered ArtVentive EOS devices were used in 10 porcine models...
October 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28807646/elevated-renal-pelvic-pressures-during-percutaneous-nephrolithotomy-risks-higher-postoperative-pain-and-longer-hospital-stay
#2
Muhannad Alsyouf, Samuel Abourbih, Benjamin West, Herbert Hodgson, D Duane Baldwin
PURPOSE: Renal pelvic pressure may vary during percutaneous nephrolithotomy. We sought to determine the relationship of postoperative pain to endoscope caliber, renal pelvic pressure and hospital stay. MATERIALS AND METHODS: We reviewed the records of 20 percutaneous nephrolithotomies done under ureteroscopic guidance with renal pelvic pressure monitoring. The ureteroscope working channel was connected to a pressure transducer and used to determine renal pelvic pressure at baseline, when irrigating with a 26Fr rigid nephroscope and a 16Fr flexible nephroscope, and during suction...
August 12, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28802568/the-application-of-suctioning-flexible-ureteroscopy-with-intelligent-pressure-control-in-treating-upper-urinary-tract-calculi-on-patients-with-a-solitary-kidney
#3
Jianrong Huang, Donghua Xie, Ruiping Xiong, Xiaolin Deng, Chengbing Huang, Difu Fan, Zuofeng Peng, Wen Qin, Min Zeng, Leming Song
OBJECTIVE: To investigate the usage of intelligently pressure-controlled flexible ureteroscopy (URS) in managing upper urinary tract calculi in patients with a solitary kidney. METHODS: Forty patients with a solitary kidney and upper urinary tract calculus were included in this study. All the patients underwent suctioning URS with intelligent control of renal pelvic pressure by connecting pressure-measuring suctioning ureteral access sheath to an irrigation and suctioning platform...
August 9, 2017: Urology
https://www.readbyqxmd.com/read/28791874/renal-pelvic-pressure-in-percutaneous-nephrolithotomy-the-effect-of-multiple-tracts
#4
Samuel Abourbih, Muhannad Alsyouf, Alexander Yeo, Jacob Martin, Janna M Vassantachart, Michael Lee, Jonathan Maldonado, Michelle Lightfoot, Roger Li, Gaudencio Olgin, D Duane Baldwin
INTRODUCTION: During percutaneous nephrolithotomy (PCNL), elevated renal pelvic pressures (RPPs) may spread infection through pyelovenous backflow whereas decreased pressures can hinder observation and increase bleeding. The purpose of this study was to evaluate the effects of multiple access tracts and different sized endoscopic equipment on RPP in a porcine model. MATERIALS AND METHODS: RPP was measured in one- vs two-tract access, rigid vs flexible nephroscopy, and suction vs no suction...
October 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28743562/robotic-assisted-laparoscopic-artificial-urinary-sphincter-and-mace-procedure-on-a-pediatric-patient
#5
Paulo Renato Marcelo Moscardi, Natalia Ballesteros, Abd-El-Rahman Abd-El-Barr, Mariarita Salvitti, Miguel Castellan
OBJECTIVE: To describe robotic-assisted laparoscopic artificial urinary sphincter (RAL-AUS) placement and a Malone antegrade continent enema (MACE) procedure on a 6-year-old girl. PATIENTS AND RESULTS: Our patient is a 6-year-old girl with myelomeningocele. She was totally incontinent of urine and chronic constipated despite aggressive bowel regimen. Preoperative workup included renal and bladder ultrasound showing normal findings. Video-urodynamics was also obtained showing low leak point pressure (25 cm H2O) with no reflux...
July 8, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28680033/left-renal-vein-compression-syndrome-cracking-the-nut-of-clinical-dilemmas-three-cases-and-review-of-literature
#6
Waqas Javed Siddiqui, Abu Bakar, Muhammad Aslam, Hasan Arif, Brian A Bianco, Alexander E Trebelev, Ellie Kelepouris, Sandeep Aggarwal
BACKGROUND The term nutcracker phenomenon (NCP) elucidates anatomical structure and hemodynamics, whereas nutcracker syndrome (NCS) refers to clinical manifestations. We present three cases of similar clinical features of hematuria and flank pain with different clinical outcomes. CASE REPORT Case 1: A 36-year-old Caucasian female with a past medical history (PMH) of HIV infection presented for evaluation of hematuria. Computed tomography (CT) without contrast showed pelvic venous congestion and narrowing of the extra-renal left renal vein (LRV)...
July 6, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28632750/renal-sodium-handling-and-blood-pressure-changes-in-gestational-protein-restricted-offspring-role-of-renal-nerves-and-ganglia-neurokinin-expression
#7
Augusto H Custódio, Marcelo C de Lima, Bárbara Vaccari, Patrícia A Boer, José A R Gontijo
BACKGROUND: Considering long-term changes in renal sodium handling and blood pressure in maternal protein-restricted (LP) offspring, we assumed that the development of LP hypertension results from abnormal dorsal root ganglia (DRG) neurokinin expression associated with impaired responsiveness of renal sensory receptors, promoting a reduced urinary excretion of sodium. The present study investigates whether increased blood pressure in protein-restricted offspring would be associated with changes in the DRG cells and in renal pelvic wall expression of NK1R, SP and CGRP when compared to NP offspring...
2017: PloS One
https://www.readbyqxmd.com/read/28614819/osteoprotegerin-is-the-strongest-predictor-for-progression-of-arterial-calcification-in-peritoneal-dialysis-patients
#8
Marcela Avila, Carmen Mora, María Del Carmen Prado, Miriam Zavala, Ramón Paniagua
BACKGROUND: Arterial calcification (AC) is frequent in patients with end stage renal disease and is also considered a risk factor for later morbidity and mortality. However, long-term factors associated with the process are not well known. We analyzed the trends over time of biomarkers related with development and progression of AC in incident patients on peritoneal dialysis (PD). METHODS: We performed a prospective study with 186 patients on PD followed up for 1 year...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28164035/proximal-ureteral-atresia-a-rare-congenital-anomaly-incidental-finding-a-case-report
#9
Cosimo Bleve, Maria Luisa Conighi, Lorella Fasoli, Valeria Bucci, Francesco Battaglino, Salvatore Fabio Chiarenza
Ureteral atresia is a rare disease usually associated with a non-functioning dysplastic kidney. The condition may be unilateral or bilateral; focal, short or long and may involve any part of the ureter. Association with other urinary anomalies is rare. We report the case of a 10-month-old boy with prenatal diagnosis of multicystic right kidney. This suspicion was confirmed after birth by ultrasound and static scintigraphy; a right vesicoureteral reflux (VUR) was recorded at cystography. The boy presented a regular renal function but was hospitalized twice for suspected pyelonephritis between the 8th and the 10th month of life and were recorded occasional mild changes in blood pressure...
January 2017: Translational pediatrics
https://www.readbyqxmd.com/read/28088272/comparison-of-renal-pelvic-pressure-and-postoperative-fever-incidence-between-standard-and-mini-tract-percutaneous-nephrolithotomy
#10
COMPARATIVE STUDY
Cheng Wu, Li-Xin Hua, Jian-Zhong Zhang, Xun-Rong Zhou, Wei Zhong, Hao-Dong Ni
This study was proposed to compare the clinical effectiveness of mini-tract percutaneous nephrolithotomy (MPCNL) with standard-tract percutaneous nephrolithotomy (SPCNL) and verify whether MPCNL is associated with both higher renal pelvic pressure (RPP) and incidence of postoperative fever. A total of 228 patients with kidney stone were randomly allocated to the MPCNL group (n=114) and SPCNL group (n=114). Both intraoperative and postoperative indexes along with the incidence of complications were compared between the two treatment groups...
January 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/27932281/nutcracker-syndrome-a-rare-cause-of-left-flank-pain-that-can-also-manifest-as-unexplained-pelvic-pain
#11
Jean-Marie Berthelot, Frédéric Douane, Yves Maugars, Eric Frampas
Nutcracker syndrome (NCS) is symptomatic unilateral renal venous hypertension due to compression of the left renal vein between the superior mesenteric artery and aorta (anterior NCS) or between the aorta and spine (posterior NCS). The left ovarian or spermatic vein empties into the left renal vein and is an additional site of venostasis in about half the cases of NCS. The presenting symptom of NCS in about half the cases is atypical left flank pain suggesting a disorder of the lower ribs or thoracolumbar spinal junction, particularly as the pain worsens with standing and increased lumbar lordosis...
December 5, 2016: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/27845144/re-hmgb1-tlr4-signaling-induces-an-inflammatory-response-following-high-pressure-renal-pelvic-perfusion-in-a-porcine-model
#12
Dean G Assimos
No abstract text is available yet for this article.
December 2016: Journal of Urology
https://www.readbyqxmd.com/read/27717709/cns-sites-activated-by-renal-pelvic-epithelial-sodium-channels-enacs-in-response-to-hypertonic-saline-in-awake-rats
#13
Vanessa S Goodwill, Christopher Terrill, Ian Hopewood, Arthur D Loewy, Mark M Knuepfer
In some patients, renal nerve denervation has been reported to be an effective treatment for essential hypertension. Considerable evidence suggests that afferent renal nerves (ARN) and sodium balance play important roles in the development and maintenance of high blood pressure. ARN are sensitive to sodium concentrations in the renal pelvis. To better understand the role of ARN, we infused isotonic or hypertonic NaCl (308 or 500mOsm) into the left renal pelvis of conscious rats for two 2hours while recording arterial pressure and heart rate...
May 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27683029/transplantation-of-mature-adipocyte-derived-dedifferentiated-fat-cells-for-the-treatment-of-vesicoureteral-reflux-in-a-rat-model
#14
Yuichiro Ikado, Daisuke Obinata, Taro Matsumoto, Yasutaka Murata, Koichiro Kano, Noboru Fukuda, Kenya Yamaguchi, Satoru Takahashi
PURPOSE: Autologous cells potentially provide an ideal injectable substance for management in vesicoureteral reflux (VUR). The aim of this study is to examine the effects of mature adipocyte-derived dedifferentiated fat (DFAT) cell transplantation on VUR in a rat bladder pressurization-induced VUR model. METHODS: To create VUR, Sprague-Dawley rats underwent urethral clamping and placement of cystostomy followed by intravesical pressurization. Rat DFAT cells (1 × 10(6) cells, DFAT group, n = 5) or saline (control group, n = 5) was then injected into the bilateral vesicoureteral junctions...
December 2016: International Urology and Nephrology
https://www.readbyqxmd.com/read/27597113/re-animal-experimental-study-to-test-application-of-intelligent-pressure-control-device-in-monitoring-and-control-of-renal-pelvic-pressure-during-flexible-ureteroscopy
#15
https://www.readbyqxmd.com/read/27558001/a-novel-flexible-ureteroscopy-with-intelligent-control-of-renal-pelvic-pressure-an-initial-experience-of-93-cases
#16
Xiaolin Deng, Leming Song, Donghua Xie, Difu Fan, Lunfeng Zhu, Lei Yao, Xiaolin Wang, Shaohua Liu, Yonghua Zhang, Xiaohui Liao, Shengfeng Liu, Zuofeng Peng, Min Hu, Xianxin Zhu, Jianrong Huang, Tairong Liu, Chuance Du, Shulin Guo, Zhongsheng Yang, Guanghua Peng, Zhangqun Ye
BACKGROUND: Flexible ureteroscopic lithotripsy (URS) is rapidly becoming a first-line therapy for patients with renal and ureteral calculi. Most current medical infusion devices can only monitor infusion flow and pressure, but not renal pelvic pressure (RPP). PATIENTS AND METHODS: We designed a patented intelligent system to facilitate flexible URS that included an irrigation and suctioning platform and a ureteral access sheath (UAS) with a pressure-sensitive tip, enabling regulation of the infusion flow precisely and control of the vacuum suctioning by computerized real-time recording and monitoring of RPP...
October 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27529029/overview-of-point-of-care-abdominal-ultrasound-in-emergency-and-critical-care
#17
REVIEW
Toru Kameda, Nobuyuki Taniguchi
Point-of-care abdominal ultrasound (US), which is performed by clinicians at bedside, is increasingly being used to evaluate clinical manifestations, to facilitate accurate diagnoses, and to assist procedures in emergency and critical care. Methods for the assessment of acute abdominal pain with point-of-care US must be developed according to accumulated evidence in each abdominal region. To detect hemoperitoneum, the methodology of a focused assessment with sonography for a trauma examination may also be an option in non-trauma patients...
2016: Journal of Intensive Care
https://www.readbyqxmd.com/read/27428495/pelvic-congestion-syndrome-and-left-renal-compression-syndrome-clinical-features-and-therapeutic-approaches
#18
REVIEW
Christina Jeanneret, Konstantin Beier, Alexander von Weymarn, Jürg Traber
Knowledge of the anatomy of the pelvic, gonadal and renal veins is important to understand pelvic congestion syndrome (PCS) and left renal vein compression syndrome (LRCS), which is also known as the nutcracker syndrome. LRCS is related to PCS and to the presence of vulvar, vaginal and pudendal varicose veins. The diagnosis of the two syndromes is difficult, and usually achieved with CT- or phlebography. The gold standard is the intravenous pressure measurement using conventional phlebography. The definition of PCS is described as pelvic pain, aggravated in the standing position and lasting for more than 6 months...
2016: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/27358057/hmgb1-tlr4-signaling-induces-an-inflammatory-response-following-high-pressure-renal-pelvic-perfusion-in-a-porcine-model
#19
Yi Shao, Minglei Sha, Lei Chen, Deng Li, Jun Lu, Shujie Xia
Percutaneous nephrolithotomy (PCNL) causes a rapid increase in renal pelvic pressure in the kidney, which induces an inflammatory response. High-mobility group box-1 (HMGB1) is known to trigger the recruitment of inflammatory cells and the release of proinflammatory cytokines following ischemia reperfusion injury in the kidney, but the contribution of HMGB1 to the inflammatory response following high-pressure renal pelvic perfusion has not been investigated. In this study, high-pressure renal pelvic perfusion was induced in anesthetized pigs to examine the effect of HMGB1 on the inflammatory response...
November 1, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27290617/role-of-endothelin-1-for-the-regulation-of-renal-pelvic-function
#20
Antje Steinbach, Katrin Schaper, Anna Koenen, Torsten Schlüter, Uwe Zimmermann, Rainer Rettig, Olaf Grisk
Endothelin-1 (ET-1) stimulates contractions in isolated rat renal pelves. The signal transduction mechanisms that mediate ET-1-induced renal pelvic contractions and the role of ET-1 for the in vivo regulation of renal pelvic function are not well characterized. We tested if ET-1 stimulates contractions in murine and human renal pelves, if ET-1 activates the renal pelvic RhoA/ROCK pathway, and if low renal ET-1 formation or ET receptor blockade reduce renal pelvic contractile activity. ET-1 increased contraction frequency and force in murine renal pelves...
August 2016: Pflügers Archiv: European Journal of Physiology
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