keyword
https://read.qxmd.com/read/38470787/in-vivo-assessment-of-hepatic-and-kidney-toxicity-induced-by-silicon-quantum-dots-in-mice
#1
JOURNAL ARTICLE
Roxana-Elena Cristian, Cornel Balta, Hildegard Herman, Bogdan Trica, Beatrice G Sbarcea, Anca Hermenean, Anca Dinischiotu, Miruna S Stan
In the last decade, silicon-based quantum dots (SiQDs) have attracted the attention of researchers due to their unique properties for which they are used in medical applications and in vivo imaging. Detection of cytotoxic effects in vivo is essential for understanding the mechanisms of toxicity, a mandatory step before their administration to human subjects. In this context, we aimed to evaluate the in vivo hepatic and renal acute toxicity of SiQDs obtained by laser ablation. The nanoparticles were administrated at different doses (0, 1, 10, and 100 mg of QDs/kg of body weight) by intravenous injection into the caudal vein of Swiss mice...
March 1, 2024: Nanomaterials
https://read.qxmd.com/read/38463299/mineral-chemistry-and-chronology-investigation-of-uraninite-in-the-jinguanchong-uranium-deposit-in-eastern-hunan-province-and-the-implications-for-geological-significance
#2
JOURNAL ARTICLE
Pengfei Fan, Mangen Li, Hongye Huang, Guangwen Huang, Yong Gu, Ke Wang, Niannan Chen
Jinguanchong deposit, a part of the Mingyuefeng ore field in eastern Hunan Province, China, is a typical perigranitic uranium deposit (a subtype of granite-related deposit) discovered recently with considerable uranium mineralization. Herein, uraninite, the primary ore mineral in the deposit, was investigated via scanning electron microscopy and electron probe microanalysis. Additionally, laser ablation-inductively coupled plasma-mass spectrometry was used for the first time to determine the in situ U-Pb age and the rare-earth element characteristics of uraninite...
March 5, 2024: ACS Omega
https://read.qxmd.com/read/38452897/disparities-in-access-to-endovenous-treatment-options-in-chronic-lower-extremity-superficial-venous-insufficiency-a-national-7-year-analysis
#3
JOURNAL ARTICLE
Shin Mei Chan, Azadeh Tabari, Emma Rudié, Brian D'Amore, Meredith Cox, Ayah Mugahid, Shams Iqbal, Dania Daye
OBJECTIVE: The goal of this study was to analyze trends in treatment access for chronic superficial venous disease and to identify disparities in care. METHODS: This study was a retrospective study and exempt from Institutional Review Board approval. The American College of Surgeon - National Surgical Quality Improvement Program (NSQIP) database was used to identify patients who underwent vein stripping (VS) and endovenous procedures for treatment of chronic superficial venous disease...
March 5, 2024: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://read.qxmd.com/read/38428500/risk-factors-for-recanalization-of-truncal-veins-following-endoluminal-ablation
#4
JOURNAL ARTICLE
Matthew Vuoncino, Joel Harding, Nasim Hedayati, Mimmie Kwong
BACKGROUND: Recanalization of target veins following treatment of superficial venous incompetence has clinical implications and may be dependent on the type of intervention. The aim of this study was to evaluate patient and procedural factors associated with truncal vein recanalization in a large study cohort using the Vascular Quality Initiative (VQI) Varicose Vein Registry. METHODS: We performed a retrospective review using the VQI Varicose Vein Registry from 2014 to 2018...
February 28, 2024: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://read.qxmd.com/read/38427180/quantitative-comparison-of-the-isolation-lesions-between-conventional-and-larger-sized-visually-guided-laser-balloon-ablation
#5
JOURNAL ARTICLE
Takashi Yamasaki, Ken Kakita, Misun Pak, Tetsuhisa Hattori
BACKGROUND: The importance of a wider circumferential isolation of the pulmonary veins (PV), which includes a large portion of the left atrial posterior wall (LAPW), has been suggested in several studies. However, the extended isolation area using a larger inflated visually guided laser balloon (VGLB) ablation remains to be elucidated. METHODS: Seventy-eight patients with atrial fibrillation (AF) who underwent VGLB ablation were enrolled in this prospective study...
March 1, 2024: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://read.qxmd.com/read/38411224/a-rare-etiology-of-frequent-ventricular-ectopy-embolic-complication-of-a-venous-iliac-stent-to-the-right-ventricle
#6
JOURNAL ARTICLE
Christy Sanchez, Christian Torres, Francisco Ujueta, Sri Mandava, Alfonso Tolentino, Joseph J Titano, Angelo LaPietra, Christos G Mihos
Peripheral venous stent migration is an exceedingly rare complication of endovascular stenting. In this clinical vignette, we present a case of a 74-year-old male with a history of endo-venous laser ablation therapy of the right greater saphenous vein complicated with an occlusion requiring a left iliac vein stent. The patient presented to the clinic months after the procedure with complaints of palpitations. Multimodality imaging revealed a stent that had become dislodged and was now located in the right ventricle, trapped within the tricuspid valve apparatus...
February 2024: Echocardiography
https://read.qxmd.com/read/38358591/endovenous-laser-ablation-evla-for-vein-insufficiency-two-year-results-of-a-multicenter-experience-with-1940-nm-laser-diode-and-a-novel-optical-fiber
#7
JOURNAL ARTICLE
Luca Palombi, Monica Morelli, Dario Bruzzese, Fabio Martinelli, Gennaro Quarto, Pier Giovanni Bianchi
Thermoablative techniques currently represent, in accordance with international guidelines, the most used methods in the treatment of varicose veins. From some years, lasers with a wavelength greater than 1900 nm have been introduced for EndoVenous Laser Ablation (EVLA) treatment. However, currently, few clinical studies regarding this new technology are reported in the medical literature. The aim of this study is to evaluate outcomes at a 2-year follow-up (mid-term) of EVLA of varicose veins of the lower limbs using a 1940-nm laser and a new cylindric monoring fiber...
February 15, 2024: Lasers in Medical Science
https://read.qxmd.com/read/38348974/the-role-of-compression-therapy-after-endovenous-laser-ablation-evla-review
#8
JOURNAL ARTICLE
Łukasz Świątek, Hubert Stępak, Zbigniew Krasiński
<b><br>Introduction:</b> Chronic venous disease (CVD) is a rising problem in western countries. There are several stages of CVD that can be treated with different ways. One of the methods of treating varicosity, C2 stage of CVD, is still developing endovenous laser ablation (EVLA). This method is popular due to its short operation time, less bleeding, quick recovery and no surgical scars. The compression therapy in form of compression stockings has been widely used as a conservative treatment of early stage CVD and it's also used after EVLA...
November 27, 2023: Polski Przeglad Chirurgiczny
https://read.qxmd.com/read/38344644/advancements-in-varicose-vein-treatment-anatomy-pathophysiology-minimally-invasive-techniques-sclerotherapy-patient-satisfaction-and-future-directions
#9
REVIEW
Faris Fayyaz, Viralkumar Vaghani, Chukwuyem Ekhator, Muhammad Abdullah, Rashed A Alsubari, Omar A Daher, Danyal Bakht, Hanen Batat, Hareem Arif, Sophia B Bellegarde, Pakeezah Bisharat, Muhayya Faizullah
Varicose veins are a common vascular condition known for causing discomfort and cosmetic concerns. This comprehensive narrative review delves into their anatomy, pathophysiology, and modern treatment options, with a focus on endovenous techniques and sclerotherapy. The review starts by emphasizing the intricate anatomy of lower extremity venous circulation, underlining the significance of both superficial and deep venous networks in venous return. It also addresses how changes in the venous wall, including valvular insufficiency, contribute to the development of varicose veins...
January 2024: Curēus
https://read.qxmd.com/read/38341672/the-level-of-occlusion-of-small-saphenous-vein-after-endovenous-laser-ablation
#10
JOURNAL ARTICLE
Anel Okić, Hasib Mujić, Amel Hadžimehmedagić, Nermina Babić, Alma Krvavac Hafizović, Azra Kajmaković Kožo
Aim To determine the success of endovenous laser ablation (EVLA) treatment and long-term occlusion of small saphenous vein (SSV), as well as factors and conditions that influence the effectiveness of EVLA treatment. Methods A total of 250 patients treated with EVLA method over a period of seven years were followed one year after treatment. The main factors monitored and recorded during EVLA treatment were laser power (W), amount of delivered energy (J), duration of treatment (sec), veins length (cm), diameter (mm) and reflux (sec)...
February 1, 2024: Medicinski Glasnik
https://read.qxmd.com/read/38336142/interventional-and-device-treatment-of-the-periocular-area
#11
JOURNAL ARTICLE
Shirin Bajaj, David Orbuch, Jordan V Wang, Brian S Biesman, Roy G Geronemus
Growth in the research, innovation, and development of laser and energy-based technologies over the past few decades have led to dramatic increases in treatment options for dermatologic and cosmetic concerns of the periorbital area. We highlight recent treatment options using laser and energy-based devices for the clearance of periocular pigmented lesions, including solar lentigines and Nevus of Ota; vascular lesions, including port wine birthmarks, infantile hemangiomas, superficial telangiectasias, and reticular veins; laser ablation of benign tumors, such as xanthelasma; cosmetic rejuvenation; treatment of infraorbital dark circles and festoons; laser removal of permanent eyebrow and eyeliner tattoos; and laser-based treatment of chronic dry eyes...
February 7, 2024: Clinics in Dermatology
https://read.qxmd.com/read/38333489/left-main-coronary-artery-spasm-during-cryoballoon-ablation-for-atrial-fibrillation-a-case-report-and-literature-review
#12
Amith Reddy Seri, Fahimeh Talaei, Mahmoud Ibrahim, Mustafa Hassan
Although phrenic nerve and esophageal injury are commonly known risks associated with cryoablation, there is limited literature regarding coronary artery spasm (CAS), a serious and potentially fatal complication of cryoablation. We report the case of a 68-year-old Caucasian female who developed a left main CAS with a significant hemodynamic compromise during cryoablation. The patient, with a history of hyperlipidemia, hypertension, and symptomatic persistent atrial fibrillation, was admitted for elective catheter ablation for atrial fibrillation...
January 2024: Curēus
https://read.qxmd.com/read/38316290/endovenous-radiofrequency-ablation-versus-laser-ablation-in-patients-with-lower-extremity-varicose-veins-a-meta-analysis
#13
REVIEW
Wenhong Jiang, Yanying Liang, Zhen Long, Ming Hu, Han Yang, Xiao Qin
BACKGROUND AND OBJECTIVE: Endovenous radiofrequency ablation (RFA) and laser ablation (LA) have been commonly used for treating lower extremity varicose veins (LEVV). Their therapeutic effects have been widely recognized compared with conventional surgery. However, there have been some controversies regarding the choice between RFA and LA. The objective of our study was to conduct a systematic review and meta-analysis comparing the early and long-term outcomes of RFA and LA. METHODS: A comprehensive search was performed in the PubMed, Embase, and Cochrane databases to identify relevant literature on endovenous thermal ablation (ETA) for primary LEVV up until June 2023...
February 3, 2024: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://read.qxmd.com/read/38314190/endoscopic-view-of-the-vertebra-during-laser-balloon-ablation-of-paroxysmal-atrial-fibrillation
#14
Shun Sasaki, Yuki Shibuya, Hitoshi Minamiguchi, Takashige Sakio, Yuma Hamanaka, Takashi Kanda, Yasuhiro Ichibori, Nobuhiko Makino, Atsushi Hirayama, Yoshiharu Higuchi
KEY CLINICAL MESSAGE: Left atrial posterior wall on the vertebra is often difficult to obtain stable tissue contact with ablation-catheter. Laser balloon ablation is effective because the compression from the vertebra can be visualized through endoscopy. ABSTRACT: When performing pulmonary vein isolation (PVI) with radiofrequency, left atrial posterior wall on the vertebra is often difficult to obtain stable tissue contact with ablation-catheter because of the movement of the ablation point...
February 2024: Clinical Case Reports
https://read.qxmd.com/read/38286148/-spontaneous-femoral-arterio-venous-fistula-in-an-80-year-old-female-patient-as-an-incidental-finding
#15
JOURNAL ARTICLE
Frank Stammler
INTRODUCTION: Spontaneous arteriovenous fistulas (AVF), in contrast to iatrogenic or post-traumatic ones, are extremely rare and only sporadically published in the literature. In the absence of exposure risk, the diagnosis of AVF can be challenging, especially if it is an incidental finding. CASE HISTORY: An 80-year-old female patient presented to our vascular consultation because of swelling of the left leg due to varicosis. For years, she had also noticed that the right foot seemed to be cooler...
February 2024: Deutsche Medizinische Wochenschrift
https://read.qxmd.com/read/38240500/defining-the-parameters-for-endovenous-microwave-ablation-to-achieve-equivalence-with-endovenous-laser-ablation-using-the-porcine-liver-model
#16
JOURNAL ARTICLE
Anjali Bachetta, Simon Cheung, Emma R Moore, Danny Nguyen, Melissa J Kiely, Mark S Whiteley
AIMS: Endovenous microwave ablation (EMWA) is an endovenous thermoablation (EVTA) system to ablate incompetent truncal veins. Early results suggest that EMWA uses more power than endovenous laser ablation (EVLA) to get the same results. We aimed to define the parameters for EMWA, which give the same tissue ablation as EVLA, using the validated porcine liver model. METHODS: EVLA (1470 nm 600 micron radial fibre) treatments were performed at 6 W, 8 W and 10 W, at pullback speeds of 6, 7, 8 and 9 s/cm, giving Linear Endovenous Energy Densities (LEEDs) between 36 - 90 J/cm...
January 19, 2024: Vascular and Endovascular Surgery
https://read.qxmd.com/read/38239311/laser-balloon-ablation-of-atrial-fibrillation-in-a-patient-with-a-large-common-inferior-trunk-a-case-report
#17
Tomohiro Takiguchi, Masao Takemoto, Tokushi Koga, Takuya Tsuchihashi
BACKGROUND: A balloon-based visually guided laser balloon (LB) ablation (LBA) is as effective and safe as radiofrequency ablation and cryoballoon ablation in curing patients with atrial fibrillation (AF). The third-generation LB is so compliant that it can be inflated to any pressure and size change of up to 41 mm with its maximal expansion, which enables maximum balloon/tissue contact regardless of the size or shape of each pulmonary vein (PV) ostium. A large common inferior trunk (CIT) with a structured, completely independent common ostium of both the right and the left inferior PVs completely conjoined prior to the junction with the left atrium is an extremely rare anatomical variant and an important triggering focus in paroxysmal AF...
January 2024: European Heart Journal. Case Reports
https://read.qxmd.com/read/38204461/safety-and-effectiveness-of-the-first-contact-force-ablation-catheter-with-a-flexible-tip
#18
JOURNAL ARTICLE
Devi Nair, Martin Martinek, B Judson Colley, Sri Sundaram, Ramesh Hariharan, Gustavo Morales, Philipp Sommer, Stewart Healy, Usman Siddiqui, Douglas Gibson, Kristina Chapman, Anne Sarver, Monica Lo
BACKGROUND: Catheter ablation is an established therapy for paroxysmal atrial fibrillation (PAF). The TactiFlex Ablation Catheter, Sensor Enabled (TactiFlex SE) is a next-generation radiofrequency ablation catheter incorporating fiber optics-based contact force-sensing technology with a flexible, laser-cut tip. OBJECTIVE: The study sought to evaluate the safety and effectiveness of the TactiFlex SE ablation catheter for treatment of drug-refractory PAF. METHODS: The TactiFlex AF investigational device exemption was a prospective, nonrandomized, multicenter clinical study...
December 2023: Heart rhythm O2
https://read.qxmd.com/read/38199976/third-generation-of-laser-1900-for-endovenous-thermoablation-evla-of-varicose-veins-a-systematic-review-and-meta-analysis
#19
REVIEW
Luca Palombi, Monica Morelli, Dario Bruzzese, Gennaro Quarto
OBJECTIVES: Third generation lasers with longer wavelengths (>1900 nm) have been introduced, in recent years, for the treatment of varicose veins. The possible advantage of the new generation lasers is that they allow complete damage to the vein wall using a lower Power in Watts (W: J/sec) and a lower linear energy density (LEED: J/cm). The aim of this work is to evaluate the results present in the literature regarding efficacy and safeness of the new generation lasers for the treatment of varicose veins...
January 10, 2024: Phlebology
https://read.qxmd.com/read/38196660/experimental-and-theoretical-model-of-single-vessel-minimally-invasive-micro-laser-ablation-inducing-microvascular-network-remodeling-and-blood-flow-redistribution-without-compromising-host-tissue-function
#20
Gabriel Gruionu, James Baish, Sean McMahon, David Blauvelt, Lucian G Gruionu, Mara Onita Lenco, Benjamin J Vakoc, Timothy P Padera, Lance L Munn
Overly dense microvascular networks are treated by selective reduction of vascular elements. Inappropriate manipulation of microvessels could result in loss of host tissue function or a worsening of the clinical problem. Here, experimental, and computational models were developed to induce blood flow changes via selective artery and vein laser ablation and study the compensatory collateral flow redistribution and vessel diameter remodeling. The microvasculature was imaged non-invasively by bright-field and multi-photon laser microscopy, and Optical Coherence Tomography pre-ablation and up to 30 days post-ablation...
December 18, 2023: Research Square
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