| Wireless surveillance for transjugular intrahepatic portosystemic shunts (TIPS): a feasibility study. | |
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MedLine Citation:
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PMID: 20207314 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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RATIONALE AND OBJECTIVES: Shunt surveillance is a critical component of follow-up for patients with cirrhosis with transjugular intrahepatic portosystemic shunts (TIPS). Transabdominal Doppler ultrasound analysis of the shunt has been used as a noninvasive means of assessing shunt function. Doppler ultrasound analysis of the shunt is less sensitive than direct transjugular portosystemic pressure gradient measurement for detecting shunt failure. A wireless, noninvasive means of measuring the portosystemic pressure gradient in the clinic may facilitate follow-up in this group of patients. The aim of this study was to determine if two implanted wireless pressure sensors could accurately transmit a portosystemic pressure gradient across a TIPS. MATERIALS AND METHODS: Two wireless microelectromechanical system pressure sensors were placed in a swine model for measuring the portosystemic pressure gradient across a TIPS. Catheter-based pressure transducers were also placed and used as the gold standard. Pressures from both systems were measured concurrently. RESULTS: Wireless microelectromechanical system portal and systemic pressure measurements were accurate within +/-2 mm Hg (mean, 0.86 mm Hg) of the gold standard. CONCLUSION: The use of wireless sensors may facilitate the surveillance of shunt function in patients with portal hypertension who have undergone placement of TIPS. |
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Authors:
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Ken K Hirasaki; John A Watts; Paul V Suhocki |
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Publication Detail:
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Type: Evaluation Studies; Journal Article |
Journal Detail:
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Title: Academic radiology Volume: 17 ISSN: 1878-4046 ISO Abbreviation: Acad Radiol Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-03-08 Completed Date: 2010-06-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9440159 Medline TA: Acad Radiol Country: United States |
Other Details:
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Languages: eng Pagination: 418-20 Citation Subset: IM |
Copyright Information:
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Copyright 2010 AUR. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Duke University Medical Center, Durham, NC 27710, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Pressure Determination
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instrumentation* Equipment Design Equipment Failure Analysis Feasibility Studies Female Humans Hypertension, Portal / diagnosis*, physiopathology, therapy* Male Micro-Electrical-Mechanical Systems / instrumentation Monitoring, Ambulatory / instrumentation* Portasystemic Shunt, Transjugular Intrahepatic / instrumentation* Reproducibility of Results Sensitivity and Specificity Telemetry / instrumentation* Transducers, Pressure* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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