keyword
https://read.qxmd.com/read/37972197/ultrasound-coded-excitation-imaging-for-endoleak-detection-after-complex-endovascular-aortic-repair
#21
JOURNAL ARTICLE
Amun Hofmann, Irene Mlekusch, Georg Wickenhauser, Corinna Walter, Jürgen Falkensammer, Afshin Assadian, Fadi Taher
OBJECTIVES: Several imaging modalities have been suggested for surveillance after fenestrated endovascular aortic repair in general and endoleak detection in specific. In the present project a coded excitation-based ultrasound (B-Flow) was investigated for endoleak detection after complex endovascular aortic repair. METHODS: Patients post complex endovascular aortic repair (FEVAR or T/FEVAR) undergoing follow-up appointments including ultrasonography of the aorta at a vascular and endovascular surgery outpatient center were included in the study...
November 16, 2023: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://read.qxmd.com/read/37926137/ultrasound-surveillance-is-feasible-after-endovascular-aneurysm-repair
#22
JOURNAL ARTICLE
Lotta Rakemaa, Pekka S Aho, Riikka Tulamo, Matti T Laine, Sani J Laukontaus, Harri Hakovirta, Maarit Venermo
INTRODUCTION: Surveillance after endovascular aneurysm repair (EVAR) is traditionally done with computed tomography angiography (CTA) scans that exposes patient to radiation, nephrotoxic contrast media, and potentially increased risk for cancer. Ultrasound (US) is less labor intensive and expensive and might thus provide a good alternative for CTA surveillance. The aim of this study was to evaluate in real-life patient cohorts whether US is able to detect post-EVAR aneurysm-related complications similarly to CTA...
November 3, 2023: Annals of Vascular Surgery
https://read.qxmd.com/read/37925038/natural-history-of-internal-carotid-artery-stenosis-progression
#23
JOURNAL ARTICLE
Keerthi B Harish, Giancarlo Speranza, Caron B Rockman, Mikel Sadek, Glenn R Jacobowitz, Karan Garg, Katherine A Teter, Thomas S Maldonado
OBJECTIVE: The aim of this study was to investigate the natural history of internal carotid artery (ICA) stenosis progression. METHODS: This single-institution retrospective cohort study analyzed patients diagnosed with ICA stenosis of 50% or greater on duplex ultrasound from 2015 to 2022. Subjects were drawn from our institutional Intersocietal Accreditation Commission-accredited noninterventional vascular laboratory database. Primary outcomes were incidences of disease progression, and stroke or revascularization after index study...
February 2024: Journal of Vascular Surgery
https://read.qxmd.com/read/37808569/extensive-but-minimally-symptomatic-deep-vein-thrombosis-in-duplicated-femoral-veins
#24
Joel Ern Zher Chan, Dmytro Podorozhnyy
Duplicated femoral veins predispose to venous thrombosis, but patients may present with minimal/no symptoms. The required length of treatment is unclear, but periodic ultrasound surveillance may play a role in the absence of definitive treatment options.
October 2023: Clinical Case Reports
https://read.qxmd.com/read/37804953/surveillance-duplex-ultrasound-prompted-interventions-after-carotid-endarterectomy
#25
JOURNAL ARTICLE
Abigail Clark, Katherine K McMackin, Kristen Knapp, Mark Zemela, Bruce Tjaden, Philip Batista, Jeffrey P Carpenter, Joseph V Lombardi
OBJECTIVES: Current societal guidelines recommend duplex ultrasound surveillance beyond 30-days after carotid endarterectomy (CEA) for patients with risk factors for restenosis or who underwent primary closure. However, the appropriate duration of this surveillance has not yet been identified and the rate at which duplex ultrasound (DUS) surveillance prompts intervention is unknown. Multiple calls for decreasing healthcare spending that does not provide value, including unnecessary testing, have been made...
October 5, 2023: Journal of Vascular Surgery
https://read.qxmd.com/read/37790305/longitudinal-changes-in-the-carotid-arteries-of-head-and-neck-cancer-patients-following-radiation-therapy-results-from-a-prospective-serial-imaging-biomarker-characterization-study
#26
Efstratios Koutroumpakis, Abdallah Sherif Radwan Mohamed, Peter Chaftari, David I Rosenthal, Dorothy Gujral, Christopher Nutting, Peter Kim, Roland Bassett, Clifton D Fuller, Elie Mouhayar
INTRODUCTION: We prospectively evaluated morphologic and functional changes in the carotid arteries of patients treated with unilateral neck radiation therapy (RT) for head and neck cancer. METHODS: Bilateral carotid artery duplex studies were performed at 0, 3, 6, 12, 18 months and 2, 3, 4, and 5 years following RT. Intima media thickness (IMT); global and regional circumferential, as well as radial strain, arterial elasticity, stiffness, and distensibility were calculated...
September 18, 2023: medRxiv
https://read.qxmd.com/read/37788744/increased-body-mass-index-and-vein-diameter-are-associated-with-incomplete-target-vein-closure-following-microfoam-ablation-of-incompetent-saphenous-veins
#27
JOURNAL ARTICLE
Stephanie D Talutis, Amanda L Chin, Peter F Lawrence, Karen Woo, Steven M Farley, William Duong, Juan Carlos Jimenez
OBJECTIVE: Patient characteristics and risk factors for incomplete or non-closure following thermal saphenous vein ablation have been reported. However, similar findings have not been clearly described following commercially manufactured polidocanol microfoam ablation (MFA). The objective of our study is to identify predictive factors and outcomes associated with non-closure following MFA of symptomatic, refluxing saphenous veins. METHODS: A retrospective review of a prospectively maintained patient database was performed from procedures in our Ambulatory Procedure Unit...
October 1, 2023: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://read.qxmd.com/read/37741464/development-of-a-duplex-real-time-rt-pcr-assay-for-the-detection-and-identification-of-two-subgroups-of-human-metapneumovirus-in-a-single-tube
#28
JOURNAL ARTICLE
Satoko Sugimoto, Miyuki Kawase, Reiko Suwa, Masatoshi Kakizaki, Yohei Kume, Mina Chishiki, Takashi Ono, Hisao Okabe, Sakurako Norito, Mitsuaki Hosoya, Koichi Hashimoto, Kazuya Shirato
Human metapneumovirus (hMPV) is a common cause of respiratory infections in children. Many genetic diagnostic assays have been developed, but most detect hMPV regardless of the subgroup. In this study, we developed a real-time RT-PCR assay that can detect and identify the two major subgroups of hMPV (A and B) in one tube. Primers and probes were designed based on the sequences of recent clinical isolates in Japan. The assay showed comparable analytical sensitivity to a previously reported real-time RT-PCR assay and specific reactions to hMPV subgroups...
September 21, 2023: Journal of Virological Methods
https://read.qxmd.com/read/37704092/impact-of-routine-surveillance-duplex-ultrasound-and-subsequent-reintervention-after-superficial-femoral-artery-stenting
#29
JOURNAL ARTICLE
Michael Shih, Alejandro Pizano, Antonio Solano, Jesus Porras-Colon, Jackie Babb, Carlos H Timaran, Mirza S Baig, Michael Siah, Gerardo Gonzalez-Guardiola, Melissa L Kirkwood
OBJECTIVE: Superficial femoral artery stenting is a common treatment for peripheral artery disease. It is effective in the short term, however in-stent restenosis limits long term success. Surveillance with duplex ultrasound can identify patients who develop in-stent restenosis leading to early reintervention, but data to support this practice is sparce. The purpose of this study was to evaluate whether surveillance and subsequent reintervention improves outcomes in patients with SFA stents...
September 11, 2023: Journal of Vascular Surgery
https://read.qxmd.com/read/37662565/use-of-a-prosthetic-conduit-for-stent-delivery-in-transcarotid-artery-revascularization-for-patients-with-unfavorable-anatomy
#30
JOURNAL ARTICLE
Kathryn DiLosa, Joel Harding, Matthew Vuoncino, Mimmie Kwong, Misty Humphries, Steven Maximus
Transcarotid artery revascularization (TCAR) provides a safe alternative to carotid endarterectomy. The anatomic requirements include a 5-cm minimum clavicle to carotid bifurcation distance for sheath access proximal to the lesion. In the present report, we describe our experience with conduit use for patients not meeting that requirement. Patients undergoing elective TCAR with a conduit from 2021 to 2022 were retrospectively identified. After carotid artery exposure, a 6-mm prosthetic graft was anastomosed to the common carotid artery in an end-to-side fashion...
September 2023: Journal of Vascular Surgery Cases and Innovative Techniques
https://read.qxmd.com/read/37657676/ultrasound-examination-without-axial-imaging-is-sufficient-for-pre-operative-in-planning-transcarotid-artery-revascularization-tcar
#31
JOURNAL ARTICLE
Saranya S Sundaram, Ryan W King, Elizabeth A Genovese, Ravi K Veeraswamy
OBJECTIVES: Duplex ultrasound is frequently used to determine the degree of carotid stenosis. However, axial imaging is typically obtained for operative planning for transcarotid artery revascularization (TCAR). We examined if ultrasound alone is sufficient prior to TCAR. METHODS: Data from the Vascular Quality Initiative TCAR Surveillance Project registry between 2016 and 2021 was obtained. Patients were divided into two groups - those with preoperative ultrasound alone (US) versus those with additional axial imaging (AX)...
August 30, 2023: Annals of Vascular Surgery
https://read.qxmd.com/read/37643662/development-and-validation-of-a-duplex-rt-qpcr-assay-for-norovirus-quantification-in-wastewater-samples
#32
JOURNAL ARTICLE
Natasha Alex-Sanders, Nick Woodhall, Kata Farkas, George Scott, Davey L Jones, David I Walker
Norovirus (NoV) is a highly contagious enteric virus that causes widespread outbreaks and a substantial number of deaths across communities. As clinical surveillance is often insufficient, wastewater-based epidemiology (WBE) may provide novel pathways of tracking outbreaks. To utilise WBE, it is important to use accurate and sensitive methods for viral quantification. In this study, we developed a one-step duplex RT-qPCR assay to simultaneously test the two main human pathogenic NoV genogroups, GI and GII, in wastewater samples...
August 27, 2023: Journal of Virological Methods
https://read.qxmd.com/read/37624000/multiplex-real-time-rt-pcr-assays-for-detection-and-differentiation-of-porcine-enteric-coronaviruses
#33
JOURNAL ARTICLE
Christina M Lazov, Alice Papetti, Graham J Belsham, Anette Bøtner, Thomas Bruun Rasmussen, Maria Beatrice Boniotti
It is important to be able to detect and differentiate between distinct porcine enteric coronaviruses that can cause similar diseases. However, the existence of naturally occurring recombinant coronaviruses such as swine enteric coronavirus (SeCoV) can give misleading results with currently used diagnostic methods. Therefore, we have developed and validated three duplex real-time quantitative RT-PCR assays for the simultaneous detection of, and differentiation between, porcine epidemic diarrhea virus (PEDV) and SeCoV...
August 14, 2023: Pathogens
https://read.qxmd.com/read/37523811/crispr-cas12a-mediated-amplification-free-digital-dna-assay-improves-the-diagnosis-and-surveillance-of-nasopharyngeal-carcinoma
#34
JOURNAL ARTICLE
Chengtao Jiang, Xiaohui Zheng, Ling Lin, Xinying Li, Xizhao Li, Ying Liao, Weihua Jia, Bowen Shu
Sensitive and accurate cell-free plasma Epstein-Barr virus (EBV) DNA measurement is essential in the routine diagnosis, monitoring and treatment of Nasopharyngeal Carcinoma (NPC). This measurement in commercial and in-house assay are commonly based on real-time quantitative PCR (qPCR) method, which requires reference materials for standardization and lack quantitative precision due to amplification bias or cross-contamination. To address these issues, we developed a CRISPR/Cas12a-mediated amplification-free digital DNA assay, which targets the repetitive sequences of EBV DNA and utilizes the cis-cleavage activity of CRISPR-Cas12a prior to droplet generation...
July 23, 2023: Biosensors & Bioelectronics
https://read.qxmd.com/read/37514808/disguised-full-duplex-covert-communications
#35
JOURNAL ARTICLE
Jihwan Moon
Covert communications have arisen as an effective communications security measure that overcomes some of the limitations of cryptography and physical layer security. The main objective is to completely conceal from external devices the very existence of the link for exchanging confidential messages. In this paper, we take a step further and consider a scenario in which a covert communications node disguises itself as another functional entity for even more covertness. To be specific, we study a system where a source node communicates with a seemingly receive-only destination node which, in fact, is full-duplex (FD) and covertly delivers critical messages to another hidden receiver while evading the surveillance...
July 19, 2023: Sensors
https://read.qxmd.com/read/37494030/management-of-endoleaks-after-elective-infrarenal-aortic-endovascular-aneurysm-repair-a-review
#36
JOURNAL ARTICLE
Sebastian Cifuentes, Bernardo C Mendes, Armin Tabiei, Salvatore T Scali, Gustavo S Oderich, Randall R DeMartino
IMPORTANCE: Endovascular aneurysm repair (EVAR) is the dominant treatment strategy for abdominal aortic aneurysms, encompassing 80% of all repairs in the United States. Endoleaks are ubiquitous and affect 30% of patients treated by EVAR, potentially leading to sac enlargement and increased risk of rupture. The care of EVAR patients requires long-term surveillance by a multidisciplinary team. Accordingly, physicians should be familiar with the fundamentals of endoleak management to achieve optimal outcomes, including timely referral for remediation or providing counseling and reassurance when needed...
July 26, 2023: JAMA Surgery
https://read.qxmd.com/read/37490491/tensor-decomposition-and-machine-learning-for-the-detection-of-arteriovenous-fistula-stenosis-an-initial-evaluation
#37
JOURNAL ARTICLE
Sepideh Poushpas, Pasha Normahani, Ilya Kisil, Ben Szubert, Danilo P Mandic, Usman Jaffer
Duplex ultrasound (DUS) is the most widely used method for surveillance of arteriovenous fistulae (AVF) created for dialysis. However, DUS is poor at predicting AVF outcomes and there is a need for novel methods that can more accurately evaluate multidirectional AVF flow. In this study we aimed to evaluate the feasibility of detecting AVF stenosis using a novel method combining tensor-decomposition of B-mode ultrasound cine loops (videos) of blood flow and machine learning classification. Classification of stenosis was based on the DUS assessment of blood flow volume, vessel diameter size, flow velocity, and spectral waveform features...
2023: PloS One
https://read.qxmd.com/read/37470266/duplex-ultrasound-for-surveillance-of-lower-limb-revascularisation
#38
REVIEW
Anna Kp Sarpe, Carolina Dq Flumignan, Luis Cu Nakano, Virginia Fm Trevisani, Renato D Lopes, Henrique J Guedes Neto, Ronald Lg Flumignan
BACKGROUND: Lower extremity atherosclerotic disease (LEAD) - also known as peripheral arterial disease - refers to the obstruction or narrowing of the large arteries of the lower limbs, most commonly caused by atheromatous plaque. Although in many cases of less severe disease patients can be asymptomatic, the major clinical manifestations of LEAD are intermittent claudication (IC) and critical limb ischaemia, also known as chronic limb-threatening ischaemia (CLTI). Revascularisation procedures including angioplasty, stenting, and bypass grafting may be required for those in whom the disease is severe or does not improve with non-surgical interventions...
July 20, 2023: Cochrane Database of Systematic Reviews
https://read.qxmd.com/read/37385366/long-term-follow-up-causes-for-re-intervention-and-consequences-for-surveillance-after-stenting-for-proximal-deep-vein-obstruction-%C3%A2
#39
JOURNAL ARTICLE
Jay M Bakas, Adriaan Moelker, Catherine van Montfrans, Marieke Kruip, Hence J M Verhagen, Marie Josee E van Rijn
OBJECTIVE: Venous stenting is increasingly performed for acute deep vein thrombosis (DVT) and post-thrombotic syndrome (PTS) with high short term patency results, but long term data are scarce. The purpose of this study was to evaluate long term outcome of stenting for acute DVT and PTS and to study causes for re-intervention. METHODS: All patients stented for acute DVT and PTS between May 2006 and November 2021 were retrospectively included in this single centre cohort study...
June 27, 2023: European Journal of Vascular and Endovascular Surgery
https://read.qxmd.com/read/37355570/oscillometric-pulse-wave-analysis-for-detecting-low-flow-arteriovenous-fistula
#40
JOURNAL ARTICLE
Veit Busch, Joachim Streis, Sandra Müller, Niklas Mueller, Felix S Seibert, Thomas Felderhoff, Timm H Westhoff
BACKGROUND: Pulse wave analysis may be useful to assess fistula function. We aimed to prospectively evaluate if convenient oscillometric devices are applicable to detect flow below 500 ml/min in a real life clinical setting. METHODS: Pulse waves were recorded ambilaterally with the vicorder® device at the brachial artery in 53 patients on haemodialysis with native fistula. Primary variables consisted of the mean slope between the systolic maximum and the diacrotic notch (Slope2), the sum of the mean slopes in the four characteristic sections of pulse waves (Slope∑) and the amplitude of relative volumetric change in the measuring cuff at the upper arm (AMP)...
June 24, 2023: BMC Nephrology
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