PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 11851932

Subcutaneous vascular access devices.

J E Moran
View original source ↗Export metadata ↓

Abstract

Tunneled dialysis catheters have played an important role in providing vascular access for hemodialysis for over 20 years, yet limitations associated with poor flow, thrombosis, and infections due to the transcutaneous nature of catheters have led to the development of alternative vascular access devices. This article reviews two historical devices-the Hemasite and the Bentley DiaTAP button-and provides an overview of two new fully subcutaneous vascular access devices-the LifeSite Hemodialysis Access System (Vasca, Inc., Tewksbury, MA) and the Dialock Hemodialysis System (Biolink Corp., Norwell, MA). These new subcutaneous devices differ significantly from currently available tunneled dialysis catheters in their design and method of use and may result in improved outcomes in hemodialysis patients. Indeed, initial clinical experiences with this new class of fully implanted access devices validate a subcutaneous approach to hemodialysis access and suggest that their high flow rates and low complication rates may make subcutaneous devices an attractive alternative to dialysis catheters for hemodialysis patients.

Explore related subjects

Catheterization, Central VenousCatheters, IndwellingEquipment DesignEquipment SafetyHumansRenal DialysisSensitivity and SpecificitySkinJournal ArticleReview

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

J E Moran. Subcutaneous vascular access devices.. https://doi.org/10.1046/j.1525-139x.2001.00111.x

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

A novel technique in selective venous sampling in the localization of parathyroid tumours utilizing a micro-wire and standardized catheter.

Selective venous sampling (SVS) is a useful technique to localize a number of hormone-producing tumours, such as parathyroid tumours, when other imaging techniques are inconclusive. Typically, a 5 French selective single end-hole catheter and standard hydrophilic wire are utilized to access the required vessels and an attempt made to withdraw blood. However, most interventional radiologists are familiar with the difficulty and limited success in withdrawing venous blood through an end-hole catheter. We describe a simple, cheap and novel technique utilizing a micro-wire that we have developed in our interventional suite to overcome this common problem. Having reached the target site with the selective end-hole catheter, a Tuohy Borst adapter is attached to the catheter end. A 0.018-inch micro-wire is then inserted through the selective end-hole catheter such that the distal wire tip exits the distal catheter tip. The purpose of the micro-wire exiting the catheter is to both straighten the catheter tip to a position parallel to the vessel, allowing easier aspiration as well as physically preventing blockage of the catheter by the vein intimal wall collapse on suction. The 5-ml sample required for PTH assay is then successfully obtained via the Tuohy Borst adapter.

Catheterization, Central Venous↗
PubMed2007

[Subclavian thrombosis after port system implantation].

The use of implanted central venous catheters with ports has become almost irreplaceable in clinical treatment of cancer patients with advanced disease. It improves the patient's quality of life and simplifies medical treatment. For safe use during outpatient follow-up treatment, possible complications such as wound infections, thrombosis or even pulmonary embolism have to be considered. The incidence of catheter-associated thrombosis in cancer patients has been estimated as 25-66% in screening evaluations. Clinical symptoms were present in only in 6-28% of all patients with diagnosed thromboses. We report on a patient with metastatic malignant melanoma, who developed a deep arm vein thrombosis two weeks after port implantation. The prognosis of deep arm vein thrombosis is determined by the development of pulmonary embolism (8-36%). In such cases, early diagnosis and treatment are essential for the patient's survival.

Catheterization, Central Venous↗