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https://www.readbyqxmd.com/read/29159005/field-specific-intensity-modulated-proton-therapy-optimization-technique-for-breast-cancer-patients-with-tissue-expanders-containing-metal-ports
#1
Maura Kirk, Gary Freedman, Thorsten Ostrander, Lei Dong
This report aims to propose and present an evaluation of a robust pencil beam scanning proton multi-field optimized treatment planning technique for postmastectomy radiation of breast cancer patients with implanted tissue expanders containing an internal metal port. Field-specific split targets were created for optimization to prevent spots from traveling through the metal port, while providing uniform coverage of the target with the use of a multi-field intensity modulated optimization approach. Two beam angles were strategically selected to provide complementary target coverage and plan robustness...
September 18, 2017: Curēus
https://www.readbyqxmd.com/read/29151228/previously-implanted-intra-peritoneal-mesh-increases-morbidity-during-re-laparoscopy-a-retrospective-case-matched-cohort-study
#2
A Sharma, P Chowbey, N S Kantharia, M Baijal, V Soni, R Khullar
PURPOSE: Laparoscopic ventral hernia repair (LVHR) with intra-peritoneal mesh placement is standard surgical treatment of abdominal wall hernias. During laparoscopic re-intervention, we examined adhesions that develop after previous intra-peritoneal mesh placement and ascertained morbidity and risk of adverse events. METHODS: This is a retrospective, case-matched comparison of three patient groups-previous intra-peritoneal mesh (Group A), previous abdominal surgery (Group B) and no previous abdominal surgery (Group C)...
November 18, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29124558/development-of-a-simple-device-enabling-percutaneous-flow-regulation-for-a-small-vascular-graft-for-a-blalock-taussig-shunt-capable-of-flow-regulation-complete-translation-of-a-review-article-originally-published-in-pediatric-cardiology-and-cardiac-surgery
#3
Yoshikazu Motohashi, Ryo Shimada, Tomoyasu Sasaki, Takahiro Katsumata, Kazunori Dan, Yasuhiro Tsutsui, Shintaro Nemoto
OBJECTIVES: The Blalock-Taussig shunt (BTS) operation is a cornerstone as initial palliative surgery for congenital heart disease with severely reduced pulmonary blood flow (PBF). The ideal PBF provided by BTS is crucial for an uneventful postoperative course, since excess PBF results in acute distress of the systemic circulation and insufficient PBF requires another BTS surgery. Therefore, the goal of this study was to develop a simple device to control the shunt graft flow percutaneously using a constrictor balloon connected to a subcutaneous port...
November 9, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29101989/acr-appropriateness-criteria-%C3%A2-radiologic-management-of-central-venous-access
#4
Colette M Shaw, Shrenik Shah, Baljendra S Kapoor, Thomas R Cain, Drew M Caplin, Khashayar Farsad, M-Grace Knuttinen, Margaret H Lee, Joseph J McBride, Jeet Minocha, Elizabeth V Robilotti, Paul J Rochon, Richard Strax, Elrond Y L Teo, Jonathan M Lorenz
Obtaining central venous access is one of the most commonly performed procedures in hospital settings. Multiple devices such as peripherally inserted central venous catheters, tunneled central venous catheters (eg, Hohn catheter, Hickman catheter, C. R. Bard, Inc, Salt Lake City UT), and implantable ports are available for this purpose. The device selected for central venous access depends on the clinical indication, duration of the treatment, and associated comorbidities. It is important for health care providers to familiarize themselves with the types of central venous catheters available, including information about their indications, contraindications, and potential complications, especially the management of catheters in the setting of catheter-related bloodstream infections...
November 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29047595/ultrafast-all-optical-flip-flop-based-on-passive-micro-sagnac-waveguide-ring-with-photonic-crystal-fiber
#5
Ming Xu, Wan Yang, Tao Hong, TangZhen Kang, JianHua Ji, Ke Wang
Ultrafast all-optical flip-flop based on a passive micro Sagnac waveguide ring is studied through theoretical analysis and numerical simulation in this paper. The types of D, R-S, J-K, and T flip-flop are designed by controlling the cross-phase modulation effect of lights in this special microring. The high nonlinearity of the hollow-core photonic crystal fiber is implanted on a chip to shorten the length of the ring and reduce input power. By sensible management, the pulse width ratio of the input and the control signal, problems of pulse narrowing, and residual pedestal at the out port are solved...
June 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28990283/metastatic-spread-from-squamous-cell-carcinoma-of-the-hypopharynx-to-the-totally-implantable-venous-access-port-insertion-site-case-report-and-review-of-literature
#6
Ankit Mangla, Nikki Agarwal, Michael Russell Mullane
BACKGROUND: The totally implantable venous access port plays a crucial role in delivering chemotherapy in the outpatient setting. Here, we report the first case of a patient with hypopharyngeal tumor who developed chest wall metastasis over the totally implantable venous access port inserted in the internal jugular vein. METHODS: Our patient, a 58-year-old man with a hypopharyngeal tumor presented with a lump over the totally implantable venous access port site...
October 9, 2017: Head & Neck
https://www.readbyqxmd.com/read/28959736/comparative-analysis-of-bacterial-community-composition-and-structure-in-clinically-symptomatic-and-asymptomatic-central-venous-catheters
#7
Franziska A Stressmann, Elodie Couve-Deacon, Delphine Chainier, Ashwini Chauhan, Aimee Wessel, Sylvaine Durand-Fontanier, Marie-Christine Escande, Irène Kriegel, Bruno Francois, Marie-Cécile Ploy, Christophe Beloin, Jean-Marc Ghigo
Totally implanted venous access ports (TIVAPs) are commonly used catheters for the management of acute or chronic pathologies. Although these devices improve health care, repeated use of this type of device for venous access over long periods of time is also associated with risk of colonization and infection by pathogenic bacteria, often originating from skin. However, although the skin microbiota is composed of both pathogenic and nonpathogenic bacteria, the extent and the consequences of TIVAP colonization by nonpathogenic bacteria have rarely been studied...
September 2017: MSphere
https://www.readbyqxmd.com/read/28958270/prevention-of-implanted-central-venous-port-erosion-with-prophylactic-mesh-tissue-augmentation
#8
David Christopher Palange, Dare Ajibade, Stephanie Bonne, Anastasia Kunac
No abstract text is available yet for this article.
September 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28949259/peripherally-inserted-central-catheters-dependency-of-radiation-exposure-from-puncture-site-and-level-of-training
#9
Martin Jonczyk, Bernhard Gebauer, Dirk Schnapauff, Roman Rotzinger, Bernd Hamm, Federico Collettini
Background Several interventional procedures show a dependency on fluoroscopy times (FT) and level of training. Furthermore, FT and dose area products (DAP) vary depending on access site and target vessel for chest port implantations, but not for other thoracic interventions such as percutaneous coronary interventions. Purpose To evaluate the influence of the combination of venous access site and level of training on FTs and DAPs during peripherally inserted central catheters (PICC) implantations in a large cohort of patients...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28929043/supraventricular-tachycardia-and-tricuspid-regurgitation-in-the-setting-of-misplaced-implantable-port-catheter-tip
#10
Ahmad Awan, Bisma Ahsan, Hasan Iftikhar, Akbar Khan, Fasil Tiruneh, Yididia Bekele, Ankit Mahajan, Ahmed A Awan
We present the case of a 31-year-old female with a past medical history of B-cell leukemia, on maintenance chemotherapy administered via centrally placed implantable catheter port, who presented to the emergency room with fever, chills, and generalized body pain of one day's duration. After initial workup, the patient was admitted to the intensive care unit and managed for severe sepsis. The patient was found to have a new-onset 3/6 holosystolic murmur at the left lower sternal border. Furthermore, she developed an episode of supraventricular tachycardia that responded to adenosine...
July 11, 2017: Curēus
https://www.readbyqxmd.com/read/28905099/port-implantation-in-patients-with-severe-thrombocytopenia-is-safe-with-interventional-radiology
#11
Annika R Keulers, Lilian Kiesow, Andreas H Mahnken
PURPOSE: Platelet counts <50/nl are often considered a contraindication for surgical and interventional radiology procedures. Yet, there are patients requiring totally implantable venous access ports (TIVAP) in whom normalization of the coagulation state is not feasible. This retrospective study evaluates the safety of interventional radiological TIVAP implantation in patients with severe thrombocytopenia. MATERIALS AND METHODS: From 12/2010 to 12/2014, a total 1200 consecutive radiological TIVAP implantations were performed and retrospectively analyzed...
September 13, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28893705/safety-and-feasibility-of-temporary-superior-vena-cava-filter-combined-with-balloon-dilatation-and-catheter-directed-thrombolysis-for-catheter-related-thrombosis
#12
Bo Zhang, Ke-Tong Wu, Yong-Jian Guo, Lin Li, Hai-Yang Lai
BACKGROUND: The objective was to evaluate the safety and feasibility of temporary superior vena cava (SVC) filter combined with balloon dilatation and catheter-directed thrombolysis for the treatment of catheter related thrombosis (CRT) caused by implanted ports. METHODS: Between February 2014 and October 2016, thirteen patients with implanted port-related CRT in internal jugular vein, brachiocephalic vein and/or subclavian vein were treated by temporary SVC filter, balloon dilatation and catheter-directed thrombolysis...
September 8, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28866629/strategies-to-reduce-line-infections-in-a-small-child-with-homozygous-familial-hypercholesterolaemia-who-cannot-yet-receive-ldl-apheresis
#13
Misan Lee, Janet Barr, Stewart Kribs, Guido Filler
Patients with homozygous familial hypercholesterolaemia are optimally treated with low-density lipoprotein apheresis. Young patients who do not meet a weight threshold (25 kg) receive regular plasmapheresis. This approach may remove excessive immunoglobulins and vascular access set-up can be challenging. We report the case of a 4 year-old child who exhibited repeated septic infections (5 in 6 months) and had recurrent access issues before two interventions were implemented: (1) the percutaneous central venous line was modified to two implanted paediatric ports, and (2) the patient started receiving two bags of Octaplasma at the end of each plasmapheresis treatment to account for the excessive loss of immunoglobulins...
September 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28865699/-infections-of-implantable-ports-in-haematology-patients
#14
REVIEW
Julie Bugeaud, Philippe Colombat, Nicolas Vallet, Christelle Hardouin, Nathalie Thibault
From 2010 to 2015, a study analysed the infections of implantable ports in haematology patients. Communication, collaboration and diligence were some of the main issues raised.
August 2017: Revue de L'infirmière
https://www.readbyqxmd.com/read/28858085/evaluation-of-an-interlaced-triple-procedure-penetrating-keratoplasty-extracapsular-cataract-extraction-and-nonopen-sky-intraocular-lens-implantation
#15
Shuo Yang, Bin Wang, Yangyang Zhang, Hualei Zhai, Junyi Wang, Shuang Wang, Lixin Xie
To evaluate an interlaced triple procedure that involved penetrating keratoplasty (PKP), extracapsular cataract extraction (ECCE) using diathermy capsulotomy, and nonopen-sky intraocular lens (IOL) implantation.This retrospective study involved data from 34 patients who were diagnosed with severe corneal opacities and cataracts. These patients were divided into an interlaced procedure group (21 patients) and a traditional procedure group (13 patients). In the interlaced group, the method of continuous curvilinear capsulorhexis (CCC) was completed via diathermy capsulotomy...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28815975/urea-based-recirculation-validation-of-the-symmetrical-palindrome-catheter
#16
Martin Jonczyk, Christian Althoff, Torsten Slowinski, Ina Lieker, Marcel Naik, Jonas Auer, Raúl García Marcos, Ejona Duka, Bernd Hamm, Maximilian de Bucourt
BACKGROUND: High blood flow and low recirculation rates are central for adequate haemodialysis. A new symmetrical tip has been invented promising efficient haemodialysis even if the ports are reversed. OBJECTIVE: To evaluate access recirculation of the 'palindrome' catheter and to report initial experiences in a clinical setting. MATERIAL AND METHODS: After implantation of the new catheter in 20 patients (male: 14; female: 6; mean age 72 ± 12...
December 2017: Journal of Renal Care
https://www.readbyqxmd.com/read/28812224/risk-factors-for-totally-implantable-venous-access-device-associated-complications-in-cystic-fibrosis
#17
C McCarthy, O O'Carroll, M E O'Brien, T McEnery, A Franciosi, C Gunaratnam, N G McElvaney
BACKGROUND: Candidaemia is an important nosocomial infection, seen frequently in immunocompromised and critically ill patients and increasingly recognised in cystic fibrosis (CF) patients with totally implantable venous access devices (TIVADs). This study aims to investigate the incidence and risk factors for the development of TIVAD-associated candidaemia and to assess the rate of TIVAD-related complications in CF patients. METHODS: A 10-year retrospective study was carried out on adult CF patients attending a single centre...
August 15, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28794870/cost-and-morbidity-analysis-of-chest-port-insertion-in-adults-outpatient-clinic-versus-operating-room-placement
#18
Claudio F Feo, Giorgio C Ginesu, Alessandro Bellini, Giuseppe Cherchi, Antonio M Scanu, Maria Laura Cossu, Alessandro Fancellu, Alberto Porcu
BACKGROUND: Totally implantable venous access devices (TIVADs) represent a convenient way for the administration of medications or nutrients. Traditionally, chest ports have been positioned by surgeons in the operating room, however there has been a transition over the years to port insertion by interventional radiologists in the radiology suite. The optimal method for chest port placement is still under debate. MATERIALS AND METHODS: Data on all adult patients undergoing isolated chest port placement at our institution in a 12-year period were retrospectively reviewed...
September 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28765192/four-dimensional-ct-guided-transcatheter-removal-of-a-fractured-migrated-catheter-of-a-totally-implantable-venous-access-port
#19
Kazushi Fujimoto, Hajime Kasai, Toshihiko Sugiura, Koichiro Tatsumi
Patients undergoing chemotherapy usually undergo placement of a totally implantable venous access port (TIVAP), but TIVAP catheter fracture is rare. We encountered a case where flushing the TIVAP catheter became impossible because of resistance. A 61-year-old-woman underwent TIVAP placement. Although a chest X-ray revealed the fractured catheter had migrated into the right hilar area, the timing of the fracture was unclear. Four-dimensional computed tomography (4D-CT) showed that the tip of the fractured catheter was located at the anterior segmental artery of the right upper lobe and was immobile, with the remaining portion flapping with the blood flow...
August 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28763827/-management-of-a-port-catheter-related-superior-vena-cava-thrombosis-in-the-setting-of-active-crohn-s-disease-a%C3%A2-case-report
#20
Ludwig Abel, Britta Uhde, Rolf Dembinski, Konstantin Schraepler
History and clinical findings A 56 year-old woman was admitted to our hospital for treatment of a severe exacerbation of Crohn's disease. During the stay a port catheter was implanted, safeguarding nutrition. A few days later the patient developed symptoms of a severe superior vena cava (SVC) syndrome with dyspnea, cyanosis, headaches and swelling of face and upper extremities. Examination A CT scan showed port catheter-associated SVC thrombosis with complete occlusion of the SVC. Diagnosis There was a coexistence of a port catheter-associated SVC thrombosis with complete occlusion of the SVC and a severe exacerbation of Crohn's disease with haematochezia...
August 2017: Deutsche Medizinische Wochenschrift
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