keyword
https://read.qxmd.com/read/38532267/microplasma-radio-frequency-technology-using-stationary-tips-on-pig-skin-a-histological-study
#1
JOURNAL ARTICLE
Jiayi Feng, Jiaxin Ning, Ling Zhang, Xiaodan Li, Lvping Huang
OBJECTIVE: To investigate the histological properties of microplasma radiofrequency (MPRF) using a stationary tip in different treatment strategies on porcine skin. METHODS: Two Bama miniature pigs received MPRF treatment with two types of stationary tips in eight groups of parameters (power, duration, and pass) on dorsal skin. Skin samples were collected from each treatment zone immediately, at 1 week and 1, 3, and 6 months after treatment. Hematoxylin and eosin (HE) and Masson staining were performed to assess histologic changes as well as neocollagenesis...
March 26, 2024: Journal of Cosmetic Dermatology
https://read.qxmd.com/read/38517812/ablation-for-malignant-liver-tumor-using-high-intensity-focused-ultrasound-and-radio-frequency-a-meta-analysis
#2
JOURNAL ARTICLE
Xing Lai, Songsong Zhang, Jianping Gong, Rong Ma
BACKGROUND: Primary liver cancer is a major health issue, so finding the most effective treatment is vital. OBJECTIVE: The present meta-analysis compares high-intensity focused ultrasound (HIFU) to radiofrequency (RF) ablation for primary liver cancer treatment. METHODS: PubMed, MEDLINE, CNKI, VIP, and Wanfang were used to search for English and Chinese papers. After carefully confirming data completeness and applying inclusion and exclusion criteria, RevMan 5...
February 29, 2024: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://read.qxmd.com/read/38461595/distributed-source-modeling-of-stereoencephalographic-measurements-of-ictal-activity
#3
JOURNAL ARTICLE
Hsin-Ju Lee, Lin-Yao Chien, Hsiang-Yu Yu, Cheng-Chia Lee, Chien-Chen Chou, Wen-Jui Kuo, Fa-Hsuan Lin
OBJECTIVES: Stereoelectroencephalography (SEEG) can define the epileptogenic zone (EZ). However, SEEG is susceptible to the sampling bias, where no SEEG recording is taken within a circumscribed EZ. METHODS: Nine patients with medically refractory epilepsy underwent SEEG recording, and brain resection got positive outcomes. Ictal neuronal currents were estimated by distributed source modeling using the SEEG data and individual's anatomical magnetic resonance imaging...
February 23, 2024: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://read.qxmd.com/read/38459841/-long-term-outcomes-of-the-maze-procedure-omitting-the-ablation-line-to-the-superior-vena-cava
#4
JOURNAL ARTICLE
Daisuke Takahashi, Norihiko Shiiya, Naoki Washiyama, Kazumasa Tsuda, Yuko Ohashi, Kayoko Natsume, Masahiro Hirano, Yuki Takeuchi
OBJECTIVE: In an effort to avoid postoperative sick sinus syndrome( SSS), we omit the ablation line to the superior vena cava( SVC) in the Cox-mazeⅢ lesion set. We report the long-term outcomes, including the freedom from SSS. METHODS: We studied 102 patients who underwent bi-atrial maze procedure for persistent atrial fibrillation (Af) from 2009 through 2023. Bipolar radio frequency ablation or cryoablation was used except for right-side atriotomy and right atriotomy...
January 2024: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://read.qxmd.com/read/38336196/bipolar-endo-epicardial-rf-ablation-animal-feasibility-study
#5
JOURNAL ARTICLE
Paweł Derejko, Izabela Janus, Piotr Kułakowski, Jacek Kuśnierz, Jakub Baran, Urszula Hangiel, Joanna Proszek, Piotr Frydrychowski, Marcin Michałek, Agnieszka Noszczyk-Nowak
UNLABELLED: The aim of the study was to evaluate chronic lesions resulting from endo-epicardial bipolar radio-frequency (RF) ablation (B-RFA) and determine optimal settings for such procedures in an animal model. METHODS: In 7 pigs up to 5 RF applications per animal were performed using two electrodes placed on both sides of the left ventricular free wall. Current was delivered for 60 seconds using generator dedicated for B-RFA with power settings of 25,30,35,40 and 50W...
February 7, 2024: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://read.qxmd.com/read/38332774/risk-models-for-predicting-the-recurrence-and-survival-in-patients-with-hepatocellular-carcinoma-undergoing-radio-frequency-ablation
#6
JOURNAL ARTICLE
Jilin Yang, Lifeng Cui, Wenjian Zhang, Zexin Yin, Shiyun Bao, Liping Liu
BACKGROUND: Hepatocellular carcinoma (HCC) patients have a poor prognosis after radio-frequency ablation (RFA), and investigating the risk factors affecting RFA and establishing predictive models are important for improving the prognosis of HCC patients. METHODS: Patients with HCC undergoing RFA in Shenzhen People's Hospital between January 2011 and December 2021 were included in this study. Using the screened independent influences on recurrence and survival, predictive models were constructed and validated, and the predictive models were then used to classify patients into different risk categories and assess the prognosis of different categories...
2024: Clinical Medicine Insights. Oncology
https://read.qxmd.com/read/38322599/surgical-and-interventional-management-of-lung-metastasis-surgical-assessment-resection-ablation-percutaneous-interventions
#7
REVIEW
Amalia J Stefanou
The lungs are the second most common site of metastases for colorectal cancer after the liver. Pulmonary metastases can be identified at the time of diagnosis of the primary tumor, or metachronously. About 20% of patients with colorectal cancer will develop pulmonary metastases. The best options for treatment include a multidisciplinary treatment approach consisting of surgical resection whenever possible, and chemotherapy. Surgical options most often include minimally invasive segmentectomy or wedge resection, while patients unable to have surgery may benefit from radio frequency ablation or radiation treatment...
March 2024: Clinics in Colon and Rectal Surgery
https://read.qxmd.com/read/38293729/bipolar-catheter-ablation-with-dedicated-radiofrequency-system-for-highly-refractory-ventricular-arrhythmia-does-the-rate-of-success-depend-on-arrhythmia-origin
#8
JOURNAL ARTICLE
Piotr Gardziejczyk, Roman Piotrowski, Tomasz Kryński, Agnieszka Sikorska, Piotr Kułakowski, Jakub Baran
INTRODUCTION: Despite rapid technological progress, some arrhythmias are still resistant to standard unipolar ablation. These include arrhythmias arising from the base of the heart, cardiac crux, or epicardium. Bipolar radiofrequency ablation (B-RFA) may be useful in some cases, however, data on the efficacy of this approach in various arrhythmia localizations are scarce. The aim of this study was to assess the efficacy of B-RFA in patients with ventricular arrhythmias originating from various locations, occurring refractory to standard unipolar ablation approaches...
January 31, 2024: Journal of Cardiovascular Electrophysiology
https://read.qxmd.com/read/38231825/treatment-planning-and-aberration-correction-algorithm-for-hifu-ablation-of-renal-tumors
#9
JOURNAL ARTICLE
Pavel B Rosnitskiy, Tatiana D Khokhlova, George R Schade, Oleg A Sapozhnikov, Vera A Khokhlova
High-intensity focused ultrasound (HIFU) applications for thermal or mechanical ablation of renal tumors often encounter challenges due to significant beam aberration and refraction caused by oblique beam incidence, inhomogeneous tissue layers and presence of gas and bones within the beam. These losses can be significantly mitigated through sonication geometry planning, patient positioning, and aberration correction using multi-element phased arrays. Here, a sonication planning algorithm is introduced that uses simulations to select the optimal transducer position, evaluate the effect of aberrations and acoustic field quality at the target region after aberration correction...
January 17, 2024: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://read.qxmd.com/read/38196127/cost-effectiveness-of-catheter-based-radiofrequency-renal-denervation-for-the-treatment-of-uncontrolled-hypertension-an-analysis-for-the-uk-based-on-recent-clinical-evidence
#10
JOURNAL ARTICLE
Andrew S P Sharp, Khoa N Cao, Murray D Esler, David E Kandzari, Melvin D Lobo, Roland E Schmieder, Jan B Pietzsch
AIMS: Catheter-based radiofrequency renal denervation (RF RDN) has recently been approved for clinical use in the European Society of Hypertension guidelines and by the US FDA. This study evaluated the lifetime cost-effectiveness of RF RDN using contemporary evidence. METHODS AND RESULTS: A decision-analytic model based on multivariate risk equations projected clinical events, quality-adjusted life years (QALYs) and costs. The model consisted of seven health states: hypertension alone, myocardial infarction (MI), other symptomatic coronary artery disease, stroke, heart failure (HF), end-stage renal disease, and death...
January 9, 2024: European Heart Journal. Quality of Care & Clinical Outcomes
https://read.qxmd.com/read/38193546/cardiac-radiotherapy-transiently-alters-left-ventricular-electrical-properties-and-induces-cardiomyocyte-specific-ventricular-substrate-changes-in-heart-failure
#11
JOURNAL ARTICLE
Felix Mehrhof, Judith Hüttemeister, Radu Tanacli, Matthias Bock, Markus Bögner, Felix Schoenrath, Volkmar Falk, Daniel Zips, Gerhard Hindricks, Jin-Hong Gerds-Li, Felix Hohendanner
BACKGROUND: Ongoing clinical trials investigate the therapeutic value of stereotactic cardiac radioablation (cRA) in heart failure patients with ventricular tachycardia. Animal data indicate an effect on local cardiac conduction properties. However, the exact mechanism of cRA in patients remains elusive. METHODS: High-density 3D electroanatomic mapping in sinus rhythm was performed in a patient with left ventricular assist device and repeated ventricular tachycardia episodes upon several catheter-based endocardial radio-frequency ablation attempts...
January 9, 2024: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://read.qxmd.com/read/38164773/fingers-on-the-wrist-and-taming-the-funny-current-rejuvenate-the-wounded-heart-ivabradine-responsive-atrial-tachycardia
#12
A Shaheer Ahmed, Gauravkumar Divani, Nitish Rai, Anwar Hussain Ansari
A 19-year-old male presented with dyspnea on exertion (New York Heart Association [NYHA] class II) and occasional palpitations for six months. He had initially been evaluated at another facility and diagnosed with dilated cardiomyopathy. Despite treatment, there was no improvement in his symptoms. On evaluation at our centre, his previous electrocardiograms appeared normal. However, palpation of his radial pulse for one minute revealed runs of regular tachycardia, interspersed with a normal pulse rate. A 30-second rhythm strip electrocardiogram (ECG) showed multiple runs of ectopic tachycardia originating from the right atrial appendage, interspersed with ectopic atrial rhythms...
December 2023: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://read.qxmd.com/read/38162371/great-toe-osteoid-osteoma-with-atypical-presentation-a-case-report
#13
Mansingh Jarolia, Nitin Chauhan, Sai Krishna M L V, Shivanand Gamangatti
INTRODUCTION: Osteoid osteoma is a common benign osteoblastic lesion of the bone. Although it commonly affects the cortex of long bones, it rarely involves the cancellous portion of the small bones such as phalanges. The occurrence of osteoid osteoma in phalanges poses a diagnostic dilemma. CASE REPORT: In our case report, we presented a 26-year-old patient with long-standing pain over the great toe. The radiographs and magnetic resonance imaging (MRI) were unable to diagnose the lesion, and a single-photon emission computerized tomography scan picked up the nidus...
December 2023: Journal of Orthopaedic Case Reports
https://read.qxmd.com/read/38158918/-five-year-dynamics-adrenergic-reactivity-of-erythrocytes-after-radio-frequency-sympathic-denervation-of-renal-arteries-in-patients-with-resistant-arterial-hypertension
#14
JOURNAL ARTICLE
T Y Rebrova, A Y Falkovskaya, S A Afanasiev, V F Mordovin, I V Zyubanova, E F Muslimova
AIM: To study the initial state of adrenergic reactivity and the five-year dynamics of the beta-adrenergic reactivity index of erythrocyte membranes and the manifestation of the antihypertensive effect of the procedure for radiofrequency destruction of sympathetic structures of the renal artery in patients with resistant arterial hypertension. SUBJECTS AND METHODS: The analysis included 42 patients with resistant arterial hypertension (RH). The renal denervation (RD) procedure of the kidneys was performed by endovascular bilateral transcatheter radiofrequency ablation of the renal arteries...
November 3, 2023: Terapevticheskiĭ Arkhiv
https://read.qxmd.com/read/38142870/incidence-clinical-characteristics-electrophysiological-characteristics-and-outcomes-of-patients-with-baseline-pr-prolongation-undergoing-radiofrequency-ablation-for-atrioventricular-nodal-reentrant-tachycardia
#15
JOURNAL ARTICLE
Sameer Rane, Shomu Bohora, Debashish Acharya, Rujuta Parikh, Raghav Bansal
AIMS AND OBJECTIVES: Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common supraventricular tachycardia (SVT). Prolonged PR interval(>200 ms) on baseline electrocardiogram (ECG) is uncommon in such patients. The aim of the current study was to evaluate the incidence, clinical, electrophysiological characteristics, and outcomes of patients with baseline prolongation of PR interval undergoing radio-frequency ablation (RFA) for AVNRT. METHODS: Over 10 years, out of the total number of 1435 patients with diagnosed AVNRT, 16 patients had prolonged PR intervals at baseline...
December 22, 2023: Indian Pacing and Electrophysiology Journal
https://read.qxmd.com/read/38111176/idiopathic-dilatation-of-the-right-atrium-diagnosis-and-management
#16
JOURNAL ARTICLE
Ljiljana Rankovic-Nicic, Milica Dragicevic-Antonic, Goran Loncar, Masa Petrovic, Zelimir Antonic, Milovan Bojic
Idiopathic dilatation of the right atrium is a rare condition with an unknown etiology. It is characterized by a significant enlargement of the right atrium without the presence of other valvopathies, intracardiac shunts, or pulmonary hypertension. This report presents the case of a 50-year-old woman with a significantly enlarged right atrium that was identified at birth; however, a definitive diagnosis was made later in life. The patient did not have any genetic diseases. Through the help of regular follow-up, anticoagulant therapy, previous radio-frequency ablation, and antiarrhythmic medications, she was able to carry a pregnancy to full term and live a regular life...
December 13, 2023: Texas Heart Institute Journal
https://read.qxmd.com/read/38084419/a-side-effect-free-interventional-therapy-for-precisely-eliminating-unresectable-cancer-pain
#17
JOURNAL ARTICLE
Pengfei Zhang, Sheng Yao, Yu Tang, Shanhe Wan, Xiaoyuan Chen, Li Ma
Of patients bearing unresectable tumors at advanced stages, most undergo serious pain. For unresectable tumors adjacent to vital organs or nerves, eliminating local cancer pain without adverse effects remains a formidable challenge. Interventional ablative therapies (IATs), such as radio frequency ablation (RFA), microwave ablation, and irreversible electroporation, have been clinically adopted to treat various carcinomas. In this study, we established another palliative interventional therapy to eliminate local cancer pain, instead of relieving nociception temporarily...
December 12, 2023: ACS Nano
https://read.qxmd.com/read/38083787/meshless-simulation-of-multi-site-radio-frequency-catheter-ablation-through-the-fragile-points-method
#18
JOURNAL ARTICLE
Konstantinos A Mountris, Richard Schilling, Alicia Casals, Helge A Wurdemann
Computational models for radio frequency catheter ablation (RFCA) of cardiac arrhythmia have been developed and tested in conditions where a single ablation site is considered. However, in reality arrhythmic events are generated at multiple sites which are ablated during treatment. Under such conditions, heat accumulation from several ablations is expected and models should take this effect into account. Moreover, such models are solved using the Finite Element Method which requires a good quality mesh to ensure numerical accuracy...
July 2023: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://read.qxmd.com/read/38021704/unilateral-biportal-endoscopic-laminectomy-bilateral-decompression-using-a-monoportal-scope-and-bipolar-coagulator-for-lumbar-spinal-stenosis-a-technical-report
#19
JOURNAL ARTICLE
Takeshi Kaneko, Yuichi Takano, Hiroki Iwai
The purpose of this study was to introduce the application of a monoportal scope and bipolar coagulator used in full-endoscopic spine surgery (FESS) for unilateral biportal endoscopy-unilateral laminectomy bilateral decompression (UBE-ULBD) in those with central stenosis. A 68-year-old man who presented with cauda equina symptoms underwent UBE-ULBD to improve his central stenosis at the L2/3 level. In this technique, a FESS scope was attached to a camera portal in place of a common arthroscope. A decompression tool was subsequently inserted through the working portal, and the lower border of the vertebral lamina and the lower border of the contralateral lamina were resected...
October 2023: Curēus
https://read.qxmd.com/read/37960582/joint-multidimensional-pattern-for-spectrum-prediction-using-gnn
#20
JOURNAL ARTICLE
Xiaomin Wen, Shengliang Fang, Zhaojing Xu, Han Liu
In general, judging the use/idle state of the wireless spectrum is the foundation for cognitive radio users (secondary users, SUs) to access limited spectrum resources efficiently. Rich information can be mined by the inherent correlation of electromagnetic spectrum data from SUs in time, frequency, space, and other dimensions. Therefore, how to efficiently use the spectrum status of each SU implementation of reception multidimensional combination forecasting is the core of this paper. In this paper, we propose a deep-learning hybrid model called TensorGCN-LSTM based on the tensor data structure...
November 1, 2023: Sensors
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