scholarly journals Supermicrosurgical Suture-Stent Technique for A Lymphaticovenular Bypass

2021 ◽  
Vol 10 (12) ◽  
pp. 2595
Author(s):  
Ryo Karakawa ◽  
Hidehiko Yoshimatsu ◽  
Keisuke Kamiya ◽  
Yuma Fuse ◽  
Tomoyuki Yano
Keyword(s):  
Lower Extremity ◽  
Success Rate ◽  
Infrared Camera ◽  
Conventional Technique ◽  
Minimal Risk ◽  
Exclusion Criteria ◽  
Back Wall ◽  
Camera System ◽  
Good Patency

Background: Lymphaticovenular anastomosis (LVA) is a challenging procedure and requires a sophisticated supermicrosurgical technique. The aim of this study was to evaluate and establish a discrete supermicrosurgical anastomosis method using the “suture-stent technique”. Methods: Forty-eight LVA sites of twenty patients with lower extremity lymphedema who had undergone LVA between July 2020 and January 2021 were included in this study. LVA was performed with the conventional technique or with the suture-stent technique. The patency of the anastomoses was evaluated using an infrared camera system intraoperatively. The success rate on the first try and the final success rate for each group were compared. Results: After full application of the exclusion criteria, 35 LVAs of 16 patients including 20 limbs were included in the analysis. The ratio of good patency findings after anastomosis in the suture-stent technique group was 100%. The incidences of leakage or occlusion on the first try were statistically greater in the conventional technique group (29.4%) than in the suture-stent technique group (0%) (p = 0.0191). All anastomoses achieved good patency in the final results. Conclusion: With its minimal risk of catching the back wall during the anastomosis, the suture-stent technique can be considered an optimal anastomosis option for LVA.

Applicability of the VOYAGER trial criteria: a cohort study on patients in the nationwide Danish Vascular Registry

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
M Soegaard ◽  
P.B Nielsen ◽  
F Skjoeth ◽  
T.B Larsen ◽  
N Eldrup
Keyword(s):  
Myocardial Infarction ◽  
Lower Extremity ◽  
Major Adverse Cardiovascular Events ◽  
Funding Source ◽  
Inclusion Criteria ◽  
Private Company ◽  
Exclusion Criteria ◽  
Dual Pathway ◽  
Event Rates ◽  
Lower Extremity Revascularization

Abstract Introduction Peripheral artery disease (PAD) carries a high risk of debilitating stroke, myocardial infarction, and death. The VOYAGER PAD trial investigates whether rivaroxaban 2.5 mg plus aspirin vs aspirin alone leads to a reduction in major adverse cardiovascular events (MACE) in patients with symptomatic PAD undergoing revascularization. However, it is unclear whether patients enrolled in VOYAGER PAD reflect those undergoing lower extremity revascularization in daily clinical practice. Purpose To describe the proportion of patients eligible for the VOYAGER PAD trial within the nationwide Danish Vascular Registry (DVR), the reasons for ineligibility, and rates of cardiovascular outcomes in VOYAGER-eligible and VOYAGER-ineligible patients. Methods We identified and characterized all patients from 2000–2016 undergoing open surgical or endovascular revascularization for symptomatic PAD in the DVR and applied the VOYAGER inclusion and exclusion criteria. We computed one-year rates per 100 person-years of VOYAGER PAD trial endpoints of MACE, myocardial infarction, ischemic stroke, major amputation, major bleeding, cardiovascular (CV) death, and all cause death. Results In the DVR, 32,911 patients underwent lower extremity revascularization for symptomatic PAD and were evaluated for eligibility. Among these, 32.2% had at least one exclusion criteria and an additional 40.6% without exclusion criteria did not fulfil inclusion criteria. The “VOYAGER-eligible” population therefore comprised 27.2% of the identified patients (Figure 1A). Main reasons for exclusion were atrial fibrillation (30.7%), poorly regulated hypertension (19.6%), PCI or ACS within 12 months before (16.0%), treatment with strong inhibitors or inducers of cytochrome P450 (9.2%), active cancer (8.8%), and severe renal failure (8.3%). Main reasons for non-inclusion were aorto-iliac procedures (79.0%), non-successful revascularization (13.1%), and age<50 years (7.1%). Compared with “VOYAGER-eligible” patients, event rates were slightly lower among patients in the DVR not fulfilling inclusion criteria and markedly higher for “VOYAGER excluded” patients (Figure 1B). Conclusion In this nationwide cohort of symptomatic PAD patients undergoing lower extremity revascularization, 27.2% full filled the inclusion and exclusion criteria for dual pathway therapy in the VOYAGER PAD trial. Non-inclusion predominantly related to aorto-iliac procedures and were associated with lower event rates. Future studies are needed to clarify if these patients could also benefit from dual pathway therapy. Figure 1 Funding Acknowledgement Type of funding source: Private company. Main funding source(s): Bayer AG, Berlin, Germany

scholarly journals Modified percutaneous radiologic gastrostomy technique without endoscopic or nasogastric access

2019 ◽  
Vol 50 (1) ◽  
Author(s):  
Reda Tabashy ◽  
Amira Darwish ◽  
Ashraf Ibrahim ◽  
Mohamed Gad El-Mola
Keyword(s):  
Esophageal Cancer ◽  
Success Rate ◽  
Nasogastric Tube ◽  
Conventional Technique ◽  
Fluoroscopic Guidance ◽  
Efficacy And Safety ◽  
Technical Success ◽  
Technical Success Rate ◽  
Major Complications ◽  
Percutaneous Radiologic Gastrostomy

Abstract Background The aim of this study is to evaluate the efficacy and safety of a modified percutaneous radiologic gastrostomy (MPRG) technique under ultrasound and fluoroscopic guidance without endoscopic or nasogastric access. Results The study included 24 patients: 10 males and 14 females whose ages ranged from 44 to 80 years old. Ten patients had esophageal cancer and 14 patients had neck cancer. Technical success was achieved in 23 out of the 25 procedures (92%). Two procedures failed (8%) and were converted to the conventional technique by using the nasogastric tube. No major complications were reported. Minor complications were observed in 5 patients (20%): intraperitoneal air and contrast leakage in 4 patients and focal mucosal dissection by the contrast in 1 patient. Conclusion The MPRG has high technical success rate, is safe with no major complications, and is most feasible when endoscopic or nasogastric access cannot be performed.

scholarly journals Plant Leaf Detection and Counting in a Greenhouse during Day and Nighttime Using a Raspberry Pi NoIR Camera

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6659
Author(s):  
Aryuanto Soetedjo ◽  
Evy Hendriarianti
Keyword(s):  
Execution Time ◽  
Low Cost ◽  
Infrared Camera ◽  
Raspberry Pi ◽  
Camera System ◽  
Detection And Counting ◽  
Outdoor Environments ◽  
Static Images ◽  
Leaf Detection ◽  
Non Destructive

A non-destructive method using machine vision is an effective way to monitor plant growth. However, due to the lighting changes and complicated backgrounds in outdoor environments, this becomes a challenging task. In this paper, a low-cost camera system using an NoIR (no infrared filter) camera and a Raspberry Pi module is employed to detect and count the leaves of Ramie plants in a greenhouse. An infrared camera captures the images of leaves during the day and nighttime for a precise evaluation. The infrared images allow Otsu thresholding to be used for efficient leaf detection. A combination of numbers of thresholds is introduced to increase the detection performance. Two approaches, consisting of static images and image sequence methods are proposed. A watershed algorithm is then employed to separate the leaves of a plant. The experimental results show that the proposed leaf detection using static images achieves high recall, precision, and F1 score of 0.9310, 0.9053, and 0.9167, respectively, with an execution time of 551 ms. The strategy of using sequences of images increases the performances to 0.9619, 0.9505, and 0.9530, respectively, with an execution time of 516.30 ms. The proposed leaf counting achieves a difference in count (DiC) and absolute DiC (ABS_DiC) of 2.02 and 2.23, respectively, with an execution time of 545.41 ms. Moreover, the proposed method is evaluated using the benchmark image datasets, and shows that the foreground–background dice (FBD), DiC, and ABS_DIC are all within the average values of the existing techniques. The results suggest that the proposed system provides a promising method for real-time implementation.

Development of far-infrared camera system for automotive

2019 ◽  
Author(s):  
Satoru Yokoi ◽  
Jun Takahashi ◽  
Shigetoshi Tokita
Keyword(s):  
Infrared Camera ◽  
Far Infrared ◽  
Camera System

Extravascular Recanalization of Chronic Total Occlusions

2018 ◽  
Author(s):  
S. Lowell Kahn
Keyword(s):  
Lower Extremity ◽  
Success Rate ◽  
Technical Failure ◽  
Technical Success ◽  
Contrast Injection ◽  
True Lumen ◽  
Chronic Total Occlusions ◽  
Technical Success Rate ◽  
The Wire

Subintimal revascularization is a mainstay of therapy for lower extremity interventions. This stems from the realization that true lumen traversal is not always possible, subintimal revascularization has a high technical success rate, and the subintimal space may confer advantages over a heavily calcified true lumen. Most commonly in the tibial vasculature, there are times when subintimal recanalization is not possible because the wire and catheter may leave the subintimal plane and enter the periadventitial tissue. Although this is not intentional, exit from the vessel historically results in a technical failure because future passes of the wire and catheter are likely to follow suit, as evidenced by extravasation on contrast injection. This chapter describes two techniques to salvage this scenario and accept an extravascular tract for revascularization: the Outback® extravascular revascularization technique and the percutaneous gun-sight extravascular revascularization technique.

Incorporating intra-lesional injection of mitomycin C in the management algorithm for bladder neck contractures and vesicourethral anastomotic strictures

2020 ◽  
pp. 205141582096190
Author(s):  
Henry H Yao ◽  
Shomik Sengupta ◽  
Justin Chee
Keyword(s):  
Success Rate ◽  
Mitomycin C ◽  
Bladder Neck ◽  
Repeated Treatment ◽  
Minimal Risk ◽  
Invasive Treatment ◽  
Level Of Evidence ◽  
Serious Adverse Events ◽  
Management Algorithm ◽  
Anastomotic Strictures

Objective: This study aims to describe the experience of a single-surgeon series with the use of intra-lesional mitomycin C (MMC) in the treatment of bladder neck contracture (BNC) and vesicourethral anastomotic stenosis (VUAS). Patients and methods: From July 2014 to January 2019, patients who underwent bladder neck incision (BNI) and intra-lesional MMC injection performed by a single surgeon were included in this retrospective study. Clinico-pathological data were extracted from medical records. The primary outcome was recurrence rate following BNI and MMC injection. Results: Ten patients were included in the study. The median age was 68 years. The cause of BNC or VUAS was secondary to radical prostatectomy in eight patients and to endoscopic prostatectomy in two patients. The median follow-up was 16.4 months. The success rate was 70% after first treatment with BNI and MMC injection, and 80% after repeated treatment. There were no serious adverse events or complications related to the MMC injection. Conclusion: BNI and intra-lesional MMC injection is a minimally invasive treatment for refractory bladder neck contractures with a good success rate and minimal risk of side effects when a low dose of MMC is used. Further prospective multicentre study is warranted. Level of evidence: Level 4.

Theoretical and Experimental Study of Electrohydrodynamic Heat Transfer Enhancement Through Wire-Plate Corona Discharge

1997 ◽  
Vol 119 (3) ◽  
pp. 604-610 ◽  
Author(s):  
B. L. Owsenek ◽  
J. Seyed-Yagoobi
Keyword(s):  
Heat Transfer ◽  
Fluid Motion ◽  
Infrared Camera ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Numerical Code ◽  
Transfer Coefficients ◽  
Camera System ◽  
Heat Transfer Coefficients ◽  
Fine Wire

Heat and mass transfer between a surface and the surrounding gas can be enhanced by the application of electric body forces that induce jet or plume-like fluid motion. Such enhancement causes no noise or vibration, can be applied in complex, isolated geometries, and allows simple control of surface temperatures. This paper examines the potentially useful case of multiple fine-wire electrodes suspended in the open air above a grounded and heated horizontal surface. An infrared camera system was used to obtain a complete and accurate distribution of local heat transfer coefficients on the impingement surface. A numerical code was developed and verified by comparison with experimental data. This code was then used to investigate and compare the heat transfer generated by novel electrode geometries.

scholarly journals A Decade of Progress Using Virtual Reality for Poststroke Lower Extremity Rehabilitation: Systematic Review of the Intervention Methods

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Carlos Luque-Moreno ◽  
Alejandro Ferragut-Garcías ◽  
Cleofás Rodríguez-Blanco ◽  
Alberto Marcos Heredia-Rizo ◽  
Jesús Oliva-Pascual-Vaca ◽  
...  
Keyword(s):  
Systematic Review ◽  
Virtual Reality ◽  
Lower Extremity ◽  
Positive Impact ◽  
Assessment Tools ◽  
Stroke Patients ◽  
Exclusion Criteria ◽  
Electronic Search ◽  
Different Types ◽  
Conventional Physiotherapy

Objective. To develop a systematic review of the literature, to describe the different virtual reality (VR) interventions and interactive videogames applied to the lower extremity (LE) of stroke patients, and to analyse the results according to the most frequently used outcome measures.Material and Methods. An electronic search of randomized trials between January 2004 and January 2014 in different databases (Medline, Cinahl, Web of Science, PEDro,andCochrane) was carried out. Several terms (virtual reality, feedback, stroke, hemiplegia, brain injury, cerebrovascular accident, lower limb, leg, andgait) were combined, and finally 11 articles were included according to the established inclusion and exclusion criteria.Results. The reviewed trials showed a high heterogeneity in terms of study design and assessment tools, which makes it difficult to compare and analyze the different types of interventions. However, most of them found a significant improvement on gait speed, balance and motor function, due to VR intervention.Conclusions. Although evidence is limited, it suggests that VR intervention (more than 10 sessions) in stroke patients may have a positive impact on balance, and gait recovery. Better results were obtained when a multimodal approach, combining VR and conventional physiotherapy, was used. Flexible software seems to adapt better to patients’ requirements, allowing more specific and individual treatments.

scholarly journals Percutaneous mechanical thrombectomy combined with catheter-directed thrombolysis in the treatment of acute pulmonary embolism and lower extremity deep venous thrombosis: A novel one-stop endovascular strategy

2017 ◽  
Vol 46 (2) ◽  
pp. 836-851 ◽  
Author(s):  
Bing Liu ◽  
MingYuan Liu ◽  
LiHong Yan ◽  
JunWei Yan ◽  
Jiang Wu ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Lower Extremity ◽  
Venous Thrombosis ◽  
Deep Venous Thrombosis ◽  
Success Rate ◽  
Acute Pulmonary Embolism ◽  
Mechanical Thrombectomy ◽  
Iliac Vein ◽  
Percutaneous Mechanical Thrombectomy ◽  
Catheter Directed Thrombolysis

Objective This study was performed to evaluate the efficacy and feasibility of percutaneous mechanical thrombectomy (PMT) combined with catheter-directed thrombolysis (CDT) in patients with acute pulmonary embolism (APE) and lower extremity deep venous thrombosis (LEDVT). Methods In total, 20 consecutive patients with APE and LEDVT were prospectively selected for PMT combined with CDT. Mechanical thrombus fragmentation and aspiration using a pigtail rotation catheter followed by CDT was performed in each patient. Details regarding the patients’ clinical presentation and outcome, pulmonary status parameters (pulmonary arterial pressure, partial pressure of oxygen in arterial blood, Miller score, thigh and calf circumference, and shock index), and lower extremity parameters (thrombus-lysis grade and Villalta scale score) were recorded. Results All 20 patients’ clinical manifestations significantly improved. Both the clinical success rate and technical success rate were 100%. No major adverse events occurred during hospitalization. Four patients developed iliac vein compression syndrome and underwent stent implantation in the iliac vein. No pulmonary embolism recurred within 16.5±6.8 months of follow-up. Conclusions The combination of PMT and CDT is a safe and effective treatment for APE and LEDVT with good short- and intermediate-term clinical outcomes.

Selecting among competing models of electro-optic, infrared camera system range performance

2013 ◽  
Vol 52 (11) ◽  
pp. 113108 ◽  
Author(s):  
Jonathan M. Nichols ◽  
James E. Hines ◽  
James D. Nichols
Keyword(s):  
Infrared Camera ◽  
Camera System ◽  
Electro Optic ◽  
Competing Models
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