scholarly journals Peritoneal catheter obstruction by sigmoid colon wall

2011 ◽  
Vol 79 (9) ◽  
pp. 1032
Author(s):  
Motonishi Shuta ◽  
Ishibashi Yoshitaka ◽  
Kawarazaki Hiroo ◽  
Katagiri Daisuke ◽  
Hirata Yugo ◽  
...  
Keyword(s):  
Sigmoid Colon ◽  
Peritoneal Catheter ◽  
Colon Wall ◽  
Catheter Obstruction

scholarly journals Development of the Stiffenable Exoskeleton Device for a Colonoscopy

2009 ◽  
Vol 3 (2) ◽  
Author(s):  
JungHun Choi ◽  
R. H. Sturges
Keyword(s):  
Minimally Invasive ◽  
Sigmoid Colon ◽  
Fiber Optic ◽  
Diagnostic Procedures ◽  
Training Model ◽  
Mechanical Trauma ◽  
Colon Wall ◽  
Flexible Colonoscope ◽  
Design Requirements ◽  
Exoskeleton Device

Colonoscopy provides a minimally invasive tool for examining and treating the colon without surgery, but current colonoscope designs still cause a degree of pain and mechanical trauma to the colon wall. The most common colonoscopes are long tubes inserted through the rectum with fiber optic lights, cameras, and biopsy tools on the distal end. The stiffness required to support these tools makes it difficult for the scopes to navigate the twisted path of the colon without causing mechanical trauma inside the colon wall or distorting its shape. The shaft of the colonoscope often causes looping (alpha, reverse alpha, or n), and it is very difficult to advance the distal tip of the colonoscope with looping. In order to avoid looping and minimize mechanical trauma, the author expanded on a design by Zehel et al., who proposed surrounding a flexible colonoscope with an external exoskeleton structure with controllable stiffness. The stiffenable exoskeleton device is comprised of rigid, articulating tubular units, which are stiffened or relaxed by four control cables. The stiffened or relaxed exoskeleton device guides navigation and provides stability for the colonoscope when it protrudes beyond the exoskeleton device for examination and procedures. This research determined the design requirements of such an exoskeleton device and tested requirements of such an exoskeleton device and tested its behavior in a colonoscopy training model. Moreover, the stiffenable exoskeleton device can be operated in purely a mechanical way, which is safe as a class II medical device, and no additional modification of the colonoscope is needed to use the stiffenable exoskeleton device. Colonoscopy training model is used to test the stiffenable exoskeleton device. First, the endoscopist inserted the colonoscope into the colonoscopy training model up to the end of the stiffenable exoskeleton device along the shaft of the colonoscope to the distal tip of the colonoscope, and then locked the stiffenable exoskeleton device and advanced the shaft of the colonoscope to examine the colon. When the distal tip reached the cecum, he or she unlocked the stiffenable exoskeleton device, retracted the shaft of the colonoscope and the stiffenable exoskeleton device, and checked for polyps or other colon disease. Also, the endoscopist can insert the stiffenable exoskeleton device and a colonoscope alternatively by stiffening and releasing the exoskeleton device. In that way, endoscopist can advance the colonoscope and the exoskeleton structure inch-by-inch without causing mechanical trauma in the rectum and the sigmoid colon. The endoscopist tested the stiffenable exoskeleton device using the colonoscopy training model and fulfilled its objectives. Several other diagnostic procedures involving the stomach, esophagus and the nose could also benefit due to the improvements provided by the stiffenable exoskeleton technology.

scholarly journals Ultrasound in the diagnosis of peritoneal catheter obstruction in children

2012 ◽  
Vol 82 (4) ◽  
pp. 499 ◽  
Author(s):  
Francesco Esposito ◽  
Marco Di Serafino ◽  
Paolo Sgambati ◽  
Paola Erra ◽  
Carmela Mercogliano ◽  
...  
Keyword(s):  
Peritoneal Catheter ◽  
Catheter Obstruction

scholarly journals Mesenterialis actinomycosis

2021 ◽  
Vol 162 (3) ◽  
pp. 116-119
Author(s):  
Adrienn Biró ◽  
László Ternyik ◽  
Katalin Heckel ◽  
István Bálint ◽  
Zsolt Káposztás
Keyword(s):  
Sigmoid Colon ◽  
Abdominal Ultrasound ◽  
Right Hemicolectomy ◽  
Intestinal Wall ◽  
Proper Treatment ◽  
Retroperitoneal Mass ◽  
Colon Wall ◽  
Histology Result ◽  
Team Decision ◽  
Colon Transversum

Összefoglaló. Egy 46 éves nőbeteg esetét ismertetjük, akinél láz és görcsös hasi fájdalom miatt kezdődött kivizsgálás. A hasi ultrahangvizsgálat során a colon transversum területén megvastagodott falú konglomerátum volt látható. A kolonoszkópia során organikus eltérés nem igazolódott. A hasi komputertomográfiás vizsgálat retroperitonealis térfoglalást írt le, ezért onkológiai bizottság javaslata alapján műtét mellett döntöttünk. Egy hónappal a panaszok jelentkezése után megtörtént a műtét, melynek során úgy tűnt, hogy egy megközelítőleg 5 × 8 centiméteres, a vékonybélből kiinduló, a colon ascendenst és a sigmabelet is érintő, daganatnak imponáló terimét találtunk. Jobb oldali hemicolectomiát végeztünk, és reszekáltuk a sigmabélfal részletét. A szövettani vizsgálat malignitást nem igazolt, hanem a bélfallal összefüggést nem mutató, mesenterialis actinomycosist írt le. A hasi, mesenterialis actinomycosis ritka kórkép, mégis fontos, hogy gondoljunk rá mint differenciáldiagnosztikai lehetőségre, így a beteg a lehető leghamarabb megkaphatja a megfelelő kezelést. Esettanulmányunk bemutatásával a kórkép ismeretének fontosságára szeretnénk felhívni a figyelmet. Orv Hetil. 2021; 162(3): 116–119. Summary. We present the case of a 46-year-old female, who presented with fever and abdominal pain. Abdominal ultrasound revealed a thickened-walled conglomerate near the transvers colon. Colonoscopy did not show any organic abnormality. Abdominal computed tomography described a retroperitoneal mass, so we decided on surgery based on the multidisciplinary team decision. One month after the onset of symptoms, laparotomy was performed, and it seemed that we found an approximately 5 × 8 centimetre tumour attached to the small intestine involving the ascending and sigmoid colon. We performed right hemicolectomy and sigmoid colon wall resection. Histology result showed mesenteric actinomycosis with no connection to the intestinal wall, no malignancy was revealed. Although the abdominal, mesenteric actinomycosis is a rare disease, it is important to think of it as a differential diagnostic option, so the patient can get proper treatment and cured sooner. Our aim with presenting this case report is to highlight the significance of this disease. Orv Hetil. 2021; 162(3): 116–119.

scholarly journals Chronic peritoneal dialysis in children: the role of ultrasound in the diagnosis of peritoneal catheter obstruction

2016 ◽  
Vol 19 (3) ◽  
pp. 191-196 ◽  
Author(s):  
Francesco Esposito ◽  
Marco Di Serafino ◽  
Concetta Ambrosio ◽  
Maria Rita Panico ◽  
Francesca Malacario ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Chronic Peritoneal Dialysis ◽  
Peritoneal Catheter ◽  
Catheter Obstruction

Omental wrap: Radiographic diagnosis confirmed surgically – Report of two cases in Grenada

2021 ◽  
pp. 089686082098222
Author(s):  
Sanae Ogura ◽  
Germaine Bristol ◽  
Max Burchman ◽  
Linwald Fleary ◽  
Terron Hosten ◽  
...  
Keyword(s):  
Surgical Correction ◽  
Contrast Study ◽  
Peritoneal Catheter ◽  
Outflow Obstruction ◽  
Omental Wrapping ◽  
Catheter Obstruction ◽  
Catheter Malfunction ◽  
Radiographic Contrast ◽  
Reliable Differentiation ◽  
Prompt Diagnosis

Omental wrapping is a common cause of peritoneal catheter malfunction. This diagnosis should be confirmed by radiography before proceeding with surgical omentectomy. We report two cases of peritoneal dialysis (PD) catheter outflow obstruction from our developing PD program in Grenada, in which contrast studies accurately diagnosed omental wrap, allowing for prompt surgical correction. In both cases, the contrast study indicated the presence of omental wrapping, confirmed at time of surgical correction. Radiographic features of omental wrap are distinctive, which allows for reliable differentiation from other causes of obstruction. Radiographic contrast study reliably diagnoses the cause of peritoneal catheter obstruction, permitting prompt diagnosis and treatment. This is vital for regions with limited access to haemodialysis.

Development of a Colonoscope Sheath Device for Colonoscopy

2011 ◽  
Vol 5 (3) ◽  
Author(s):  
JungHun Choi ◽  
David Drozek
Keyword(s):  
Sigmoid Colon ◽  
Invasive Procedure ◽  
Training Model ◽  
The Body ◽  
Mechanical Trauma ◽  
Minimally Invasive Procedure ◽  
Complicated Shape ◽  
Colon Wall ◽  
Pass Through ◽  
Flexible Stem

Endoscopy is a minimally invasive procedure using instruments that pass through the body for diagnostic purposes and minimizes the risks associated with open surgery. Colonoscopy can viewed as an endoscopic procedure of the colon. Colonoscopy may cause extreme discomfort to the patient and also carries the risks of perforating the lining of the colon, splenic ruptures, or bleeding. The technology is an endoscope that has an exoskeleton structure of controllable stiffness and a highly flexible stem. The device saves the patient from the pain caused by the shaft of a colonoscope when it is guided from the anus to the end of the sigmoid colon. The stiffenable sheath guides the shaft of the colonoscope up to the end of the sigmoid colon to avoid looping the shaft of the colonoscope. A prototype of the device was built and tested to validate its effectiveness. In order to further improve the performance of the device, skilled endoscopists tested and validated the device using a colonoscopy training model. The colonoscopy training model is comprised of a configurable rubber colon, a human torso, a display, and sensing part. It measures the forces caused by the distal tip and the shaft of the colonoscope and the pressure to open up the lumen. The force sensors at the rubber colon constraints measure the forces, and the real-time display panel will show the results to the colonoscopist and record the data for analysis. The endoscopy sheath device improves the process of endoscopy by reducing the mechanical trauma and loops caused by the shaft of the endoscope. With the guide provided by the colonoscope sheath, the forces to the constraints of a colon are significantly decreased in the sigmoid colon. The colonoscope sheath helps to reduce the force to constraints of the colon and isolates the direct contact between the shaft of a colonoscope and a colon wall up to the end of the sigmoid colon. For the complicated shape of the colon, the endoscopy sheath also solved possible looping problems. The colonoscope training model effectively measures the forces and makes it possible to validate the effectiveness of the endoscopy sheath.

scholarly journals Sigmoid Colon Migration of an Intrauterine Device

2014 ◽  
Vol 2014 ◽  
pp. 1-3 ◽  
Author(s):  
Funda Akpinar ◽  
Esra Nur Ozgur ◽  
Saynur Yilmaz ◽  
Oguzhan Ustaoglu
Keyword(s):  
Sigmoid Colon ◽  
Birth Control ◽  
Primary Anastomosis ◽  
Intrauterine Device ◽  
Uterine Cavity ◽  
Colonic Perforation ◽  
Control Methods ◽  
Colon Wall ◽  
History Of ◽  
Colonic Lumen

Background.Intrauterine devices (IUD) are commonly used birth control methods. Colonic perforation is an infrequent but serious complication of IUD.Case.A 34-year-old woman with 2-years history of IUD, inserted at early puerperal period, presented to gynecologist with chronic pelvic pain and dyspareunia. Radiological assessment revealed that there were two copper-T devices: one in uterine cavity and another in the colonic lumen. Attempts of retrieval with colonoscopy and laparoscopy were unsuccessful. Intrauterine device embedded in sigmoid colon wall was removed with resection of the involved segment and primary anastomosis was performed.Conclusion.Although there are cases in literature that are successfully managed with colonoscopy, in chronic cases, formation of granulation tissue complicates retrieval of an IUD by this intervention.

Efficacy of Ultrasonography in the Diagnosis of Peritoneal Catheter Obstruction in Children: A Case Series

2020 ◽  
Vol 36 (6) ◽  
pp. 573-578
Author(s):  
Hiroshi Tamura ◽  
Hitoshi Nakazato ◽  
Shohei Kuraoka
Keyword(s):  
Pediatric Patients ◽  
Imaging Techniques ◽  
Case Series ◽  
Treatment Decision ◽  
Therapeutic Strategies ◽  
Resonance Imaging ◽  
Peritoneal Catheter ◽  
Catheter Obstruction ◽  
Magnetic Resonance Imaging Mri ◽  
Treatment Decision Process

Catheter obstruction is a serious complication associated with peritoneal dialysis (PD). Diagnostic imaging techniques play a role in the management of patients undergoing PD, mainly in detecting potential catheter-related complications. Imaging can help in the treatment decision process. Visualizing the obstruction and understanding the etiology are crucial for accurate management of patients and in determining therapeutic strategies. Although a PD catheter obstruction can be diagnosed using magnetic resonance imaging (MRI), ultrasonography (US) has been reported to be equally effective. The effectiveness of US and MRI in detecting PD catheter obstructions was compared in four pediatric patients. These cases demonstrate that US was more useful in visualizing PD obstruction compared with MRI. US can be repeated more conveniently and is noninvasive, especially in children. US can be considered an effective tool for diagnosing PD catheter obstruction in children.

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