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Vascular catheters device

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https://www.readbyqxmd.com/read/29135479/use-of-remote-pulmonary-artery-pressure-monitoring-cardiomems-system-in-total-artificial-heart-to-assess-pulmonary-hemodynamics-for-heart-transplantation
#1
Salman Gohar, Ziad Taimeh, Jeff Morgan, O H Frazier, Francisco Arabia, Andrew Civitello, Ajith Nair
The temporary total artificial heart (TAH-t) has been valuable as a bridge to transplantation in patients with biventricular failure. However, the challenges of accurately assessing pulmonary vascular resistance after TAH-t implantation can preclude these patients from heart transplantation, especially those with pre-existing pulmonary hypertension. The CardioMEMS Heart Failure System (St. Jude's Medical, Little Canada, MN) comprises a wireless pressure sensor that is implanted percutaneously in the pulmonary artery and transmits real-time measurements of pulmonary artery pressures...
November 8, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29120892/ce-original-research-does-certification-in-vascular-access-matter-an-analysis-of-the-picc1-survey
#2
Vineet Chopra, Latoya Kuhn, Valerie Vaughn, David Ratz, Suzanne Winter, Nancy Moureau, Britt Meyer, Sarah Krein
Study reveals differences in practices and views between certified and noncertified inserters. ABSTRACT: Background: Although certification by an accredited agency is often a practice prerequisite in health care, it is not required of vascular access specialists who insert peripherally inserted central catheters (PICCs). Whether certification is associated with differences in practice among inserters is unknown. PURPOSE: The purpose of this study was to gather information regarding whether certified and noncertified PICC inserters differ with respect to their practices and views about PICC use...
November 8, 2017: American Journal of Nursing
https://www.readbyqxmd.com/read/29117059/vascular-access-in-critically-ill-pediatric-patients-with-obesity
#3
Elizabeth E Halvorson, Doug Case, Joseph A Skelton, Michael C McCrory
OBJECTIVES: Pediatric obesity is highly prevalent and has been associated with poor outcomes for hospitalized children. Vascular access is essential in critically ill patients. The aim of this study was to evaluate whether critically ill children with obesity are more likely to undergo vascular device insertion (excluding peripheral IV catheters) and develop related complications. DESIGN: Multi-institutional retrospective observational cohort study. SETTING: Ninety-four U...
November 7, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29101573/transcatheter-atrial-septal-defect-closure-in-an-infant-body-weight-6-4%C3%A2-kg-using-the-gore-cardioform-septal-occluder-gcso
#4
Roman Scheidmann, Thomas Paul, Matthias Sigler
INTRODUCTION: Transcatheter closure has become the treatment of choice for secundum atrial septal defects (ASD II), but particularly in small children, there is concern regarding procedure-related complications. CASE DESCRIPTION: We report on a 10-month-old infant, body weight of 6.4 kg, with a large ASD who was referred for failure to thrive and dyspnea on exertion. Echocardiography showed two neighboring ASDs centrally located within an atrial septum with a length of 27 mm resulting in significant left-to-right shunting...
November 3, 2017: Molecular and Cellular Pediatrics
https://www.readbyqxmd.com/read/29097348/percutaneous-transhepatic-techniques-for-retrieving-fractured-and-intrahepatically-dislodged-percutaneous-transhepatic-biliary-drainage-catheters
#5
Liu Hsien-Tzu, Tseng Hsiuo Shan, Chiu Nai Chi, Lin Yi Yang, Chiou Yi You, Liu Chien An
Dislodged intrabiliary drainage devices, including catheters, endoprostheses, and stents, may further impair drainage and cause various local reactions, vascular and gastrointestinal tract complications. Endoscopic approaches for management of plastic biliary endoprostheses have been extensively discussed. However, in rare cases of fracture of percutaneous transhepatic biliary drainage (PTBD) catheters, only a percutaneous transhepatic technique for retrieving should be applied to avoid further damage by its rigid fragment...
November 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29090200/cranial-defect-overlying-a-ventriculoperitoneal-shunt-pressure-gradient-leading-to-free-flap-deterioration
#6
Jae Doo Joo, Jin-Uk Jang, Hyonsurk Kim, Eul-Sik Yoon, Dong Hee Kang
We report a case of free flap deterioration which may have been induced by pressure gradient resulting from cranial defect overlying a ventriculoperitoneal shunt (VP shunt). The patient, male and aged 78, had a VP shunt operation for progressive hydrocephalus. Afterwards, the scalp skin flap surrounding the VP shunt collapsed and showed signs of necrosis, exposing part of the shunt catheter. After covering the defect with a radial forearm free flap, the free flap site showed signs of gradual sinking while the vascularity of the flap remained unimpaired...
September 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/29060123/a-novel-acoustic-catheter-stethoscope-based-acquisition-and-signal-processing-framework-to-extract-multiple-bio-signals
#7
Prashanth Chetlur Adithya, Ravi Sankar, Wilfrido A Moreno, Stuart Hart
In this study, a novel acoustic stethoscope based on an intravenous catheter was introduced to measure vascular pressures from a Yorkshire pig. Our hypothesis is that by means of this single device (measurement system) and by applying signal analysis and processing framework, multiple vital bio signals can be extracted. In contrast, current conventional state-of-the-art technologies use multiple devices to provide the same information. The framework used to extract these bio signals consisted of a noise cancellation technique and wavelet based source separation...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29054842/acute-biventricular-mechanical-circulatory-support-for-cardiogenic-shock
#8
Sudeep Kuchibhotla, Michele L Esposito, Catalina Breton, Robert Pedicini, Andrew Mullin, Ryan O'Kelly, Mark Anderson, Dennis L Morris, George Batsides, Danny Ramzy, Mark Grise, Duc Thinh Pham, Navin K Kapur
BACKGROUND: Biventricular failure is associated with high in-hospital mortality. Limited data regarding the efficacy of biventricular Impella axial flow catheters (BiPella) support for biventricular failure exist. The aim of this study was to explore the clinical utility of percutaneously delivered BiPella as a novel acute mechanical support strategy for patients with cardiogenic shock complicated by biventricular failure. METHODS AND RESULTS: We retrospectively analyzed data from 20 patients receiving BiPella for biventricular failure from 5 tertiary-care hospitals in the United States...
October 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29026191/mechanisms-involved-in-the-triggering-of-neutrophil-extracellular-traps-nets-by-candida-glabrata-during-planktonic-and-biofilm-growth
#9
Chad J Johnson, John F Kernien, Amanda R Hoyer, Jeniel E Nett
Candida spp. adhere to medical devices, such as catheters, forming drug-tolerant biofilms that resist killing by the immune system. Little is known about how C. glabrata, an emerging pathogen, resists attack by phagocytes. Here we show that upon encounter with planktonic (non-biofilm) C. glabrata, human neutrophils initially phagocytose the yeast and subsequently release neutrophil extracellular traps (NETs), complexes of DNA, histones, and proteins capable of inhibiting fungal growth and dissemination. When exposed to C...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29023196/home-parenteral-nutrition-vascular-access-and-related-complications
#10
Martyn Dibb, Simon Lal
Patients with chronic intestinal failure are dependent on parenteral nutrition (PN) to maintain health and preserve life. Maintaining safe vascular access is vital to prevent life-threatening complications such as catheter-related bloodstream infection or central venous occlusion. Dedicated central venous catheters with rigorous catheter care aseptic protocols are vital in obtaining good long-term outcomes that allow continuation of PN over many years. Good catheter care requires an experienced multidisciplinary team using appropriate vascular devices, trained to identify and aggressively treat catheter-related bloodstream infections, catheter occlusions, and catheter-related thrombosis...
December 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/29022210/reducing-catheter-related-thrombosis-using-a-risk-reduction-tool-centered-on-catheter-to-vessel-ratio
#11
Timothy R Spencer, Keegan J Mahoney
In vascular access practices, the internal vessel size is considered important, and a catheter to vessel ratio (CVR) is recommended to assist clinicians in selecting the most appropriate-sized device for the vessel. In 2016, new practice recommendations stated that the CVR can increase from 33 to 45% of the vessels diameter. There has been evidence on larger diameter catheters and increased thrombosis risk in recent literature, while insufficient information established on what relationship to vessel size is appropriate for any intra-vascular device...
November 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28990945/an-alternative-treatment-for-iatrogenic-right-ventricular-puncture-in-primary-percutaneous-intervention
#12
Hasan Arı, Alper Karakuş, Selma Arı, Sencer Çamcı, Mehmet Melek
Right ventricle perforation is an uncommon, but potentially fatal, possible complication of pericardiocentesis. We presented a case of right ventricular perforation that developed during urgent pericardiocentesis due to tamponade. This case was successfully treated with the incremental removal of the drainage catheter, replacing it with a smaller catheter at 10-minute intervals. This may be an alternative option to treat iatrogenic right ventricle puncture occurring during pericardiocentesis without cardiac surgery or a vascular closure device...
October 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28983851/a-deep-learning-system-for-fully-automated-peripherally-inserted-central-catheter-picc-tip-detection
#13
Hyunkwang Lee, Mohammad Mansouri, Shahein Tajmir, Michael H Lev, Synho Do
A peripherally inserted central catheter (PICC) is a thin catheter that is inserted via arm veins and threaded near the heart, providing intravenous access. The final catheter tip position is always confirmed on a chest radiograph (CXR) immediately after insertion since malpositioned PICCs can cause potentially life-threatening complications. Although radiologists interpret PICC tip location with high accuracy, delays in interpretation can be significant. In this study, we proposed a fully-automated, deep-learning system with a cascading segmentation AI system containing two fully convolutional neural networks for detecting a PICC line and its tip location...
October 5, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28932593/successful-removal-of-embolized-chemoport-catheter-within-the-heart-and-pericardium-3-case-reports
#14
Shin-Eui Yoon, Chang Hoon Lee
Central venous access devices are routinely used in patients with cancer. Although rare, catheter transaction with subsequent embolization is one of the major complications of intra-vascular devices. We describe two patients with embolized chemoport catheters within the heart that were successfully removed percutaneously using a goose-neck snare technique. We also describe a third patient with a fractured intra-vascular catheter in the pericardium removed by pericardiotomy, which can be the first case of the kind...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28931265/diagnostic-and-interventional-optical-angioscopy-in-ex-vivo-carotid-arteries
#15
Luis E Savastano, Neeraj Chaudhary, Carlos Murga-Zamalloa, Michael Wang, Thomas Wang, B Gregory Thompson
BACKGROUND: Angioscopy - or endovascular endoscopy - is a catheter-based technique employing a flexible fiberoptic angioscope to directly visualize arterial lumen. Poor resolution and excessive stiffness of pre-existent angioscopes limited their use clinically. Recent advances resulted in novel fused optical fiber bundle angioscopes with improved flexibility and imaging resolution. Use of these devices in endovascular neurosurgery is still largely unexplored. OBJECTIVE: To evaluate image quality and feasibility of optical angioscopes for diagnostic and interventional neuro-angioscopy in carotid arteries of human cadavers...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28923785/transcatheter-mitral-valve-replacement-of-navigate-bioprosthesis-in-a-preclinical-model
#16
Haytham Elgharably, Jose L Navia, Cristian Baeza, Gabriel Maluenda, Samir Kapadia, Jerzy Sadowski, Krzysztof Bartuś, Cesare Beghi, Kalathi Thyagarajan, Ryan Bertwell, Rodolfo C Quijano
AIMS: To test the feasibility of trans-catheter mitral valve implantation of the NaviGate device in acute and chronic preclinical models. METHODS AND RESULTS: We evaluated the NaviGate valved stent implantation in the mitral position in an acute swine model (n=24, ≤ 5 days) through three different approaches: trans-atrial, trans-apical, and trans-septal, and in a chronic swine model (n=12, >10 days) through a trans-atrial approach. The NaviGate implantation procedures were successful in 83% of the acute model studies (n=20) and 83% of the chronic model studies (n=10)...
September 19, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28913733/a-prospective-feasibility-trial-of-a-novel-intravascular-catheter-system-with-retractable-coiled-tip-guidewire-placed-in-difficult-intravascular-access-diva-patients-in-the-emergency-department
#17
Christopher Raio, Robert Elspermann, Natwalee Kittisarapong, Brendon Stankard, Tanya Bajaj, Veena Modayil, Mathew Nelson, Gerardo Chiricolo, Benjamin Wie, Alexandra Snock, Michael Mackay, Adam Ash
The primary study objective was to evaluate insertion success rates. Secondary objectives included patient satisfaction, procedure time, complication rates, completion of therapy and dwell time of the novel AccuCath(®) 2.25″ Blood Control (BC) Catheter System (FDA approved) placed in difficult-access patients. This was a single-arm feasibility trial evaluating the AccuCath(®) 2.25″ BC Catheter System in a convenience sample of DIVA patients defined as at least two failed initial attempts or a history of difficult access plus the inability to directly visualize or palpate a target vein...
September 14, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28887711/in-vitro-remodeling-and-structural-characterization-of-degradable-polymer-scaffold-based-tissue-engineered-vascular-grafts-using-optical-coherence-tomography
#18
Wanwen Chen, Junqing Yang, Wenjun Liao, Jiahui Zhou, Jianyi Zheng, Yueheng Wu, Dongfeng Li, Zhanyi Lin
Non-destructive imaging strategies to monitor long-term cultures is essential for vascular engineering. The goal of this study is to investigate whether optical coherence tomography (OCT) can be a suitable approach to monitor the long-term remodeling process of biodegradable polymeric scaffold-based tissue-engineered vascular grafts (TEVG) after pulsatile stimulation and to observe polymeric scaffold degradation during bioreactor cultivation. In the present study, a perfusion system driven by a ventricular assist device was provided for a three-dimensional culture system as a pulsatile force...
September 8, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28879604/experiments-for-the-development-of-a-steerable-microcatheter
#19
Yoshitaka Inaba, Yasuaki Arai, Miyuki Sone, Takeshi Aramaki, Keigo Osuga, Hayao Tanaka, Kenichi Kanemasa
PURPOSE: Sumitomo Bakelite has developed a steerable microcatheter with a mechanism on the handle for changing the direction of the catheter tip. Experiments were conducted in an animal model to evaluate the practicality of the catheter with the goal of introduction into clinical use. MATERIALS AND METHODS: The steerable microcatheter has the following specifications: external diameter 2.4F/2.9F (distal/proximal portion); internal diameter 0.021 inches; effective length 125 cm; and it is fitted with a dial on the proximal portion for moving the tip...
September 6, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28873268/a-novel-in-vitro-model-for-haematogenous-spreading-of-s-aureus-device-biofilms-demonstrating-clumping-dispersal-as-an-advantageous-dissemination-mechanism
#20
R B Grønnemose, K L Saederup, H J Kolmos, S W K Hansen, C A Asferg, K J Rasmussen, Y Palarasah, T E Andersen
Staphylococcus aureus is able to disseminate from vascular device biofilms to the blood and organs, resulting in life-threatening infections such as endocarditis. The mechanisms behind spreading are largely unknown, especially how the bacterium escapes immune effectors and antibiotics in the process. Using an in vitro catheter infection model, we studied S. aureus biofilm growth, late-stage dispersal, and reattachment to downstream endothelial cell layers. The ability of the released biofilm material to resist host response and disseminate in vivo was furthermore studied in whole blood and phagocyte survival assays and in a short-term murine infection model...
September 5, 2017: Cellular Microbiology
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