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Cryoablation

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https://www.readbyqxmd.com/read/28100214/preoperative-lipiodol-marking-and-its-role-on-survival-and-complication-rates-of-ct-guided-cryoablation-for-small-renal-masses
#1
Fumiya Hongo, Yasuhiro Yamada, Takashi Ueda, Terukazu Nakmura, Yoshio Naya, Kazumi Kamoi, Koji Okihara, Yusuke Ichijo, Tsuneharu Miki, Kei Yamada, Osamu Ukimura
BACKGROUND: Partial nephrectomy for small renal masses (SRM) may be useful for preserving renal function, but is technically more difficult than radical nephrectomy. Cryoablation may be performed under local anesthesia. The objective of the present study is to assess the safety and therapeutic efficacy of cryoablation with lipiodol marking for SRM. METHODS: Cryoablation therapy was performed on 42 patients under local anesthesia. Their median age was 74 years (31-91)...
January 18, 2017: BMC Urology
https://www.readbyqxmd.com/read/28097671/junctional-ectopic-tachycardia-localization-and-procedural-approach-using-cryoablation
#2
Alyson R Pierick, Ian H Law, Jennifer R Muldonado, Nicholas H VON Bergen
BACKGROUND: Idiopathic junctional ectopic tachycardia (JET) may still be difficult to control with antiarrhythmic therapy. Transcatheter ablation can be challenging and may be associated with a high risk of unintended AV block. The objective of this manuscript is to report the procedural technique, the location of the successful ablation and the procedural characteristics while utilizing 3D mapping for cryoablation of JET. METHODS: A retrospective analysis was performed on all patients who had undergone cryothermal ablation for the treatment of JET at a single center...
January 18, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28089454/the-role-of-adenosine-challenge-in-catheter-ablation-for-atrial-fibrillation-a-systematic-review-and-meta-analysis
#3
Alex J A McLellan, Saurabh Kumar, Catherine Smith, Liang-Han Ling, Sandeep Prabhu, Jonathan M Kalman, Peter M Kistler
AIMS: Adenosine may unmask dormant PV conduction and facilitate consolidation of PV isolation. We performed a meta-analysis to determine the impact of adenosine administration on clinical outcomes in patients undergoing PVI. METHODS: References and electronic databases reporting AF ablation and adenosine following PVI were searched through to 22nd November 2015. The impact of adenosine on freedom from AF was assessed in twenty publications after radiofrequency ablation (RFA), and in four publications after cryoablation to achieve PVI...
January 8, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28081593/percutaneous-cryoablation-for-hepatocellular-carcinoma
#4
Kyoung Doo Song
Local ablation therapy is considered as a conventional treatment option for patients with early stage hepatocellular carcinoma (HCC). Although radiofrequency (RF) ablation is widely used for HCC, the use of cryoablation has been increasing as newer and safer cryoablation systems have developed. The thermodynamic mechanism of freezing and thawing used in cryoablation is the Joule-Thomson effect. Cryoablation destroys tissue via direct tissue destruction and vascular-related injury. A few recent comparative studies have shown that percutaneous cryoablation for HCCs is comparable to percutaneous RF ablation in terms of long term therapeutic outcomes and complications...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28078383/effects-of-triple-cryoenergy-application-on-lesion-formation-and-coronary-arteries-in-the-developing-myocardium
#5
Ulrich Krause, Filipe D Abreu da Cunha, David Backhoff, Claudius Jacobshagen, Sophia Klehs, Heike E Schneider, Thomas Paul
To improve long-term outcome after cryoablation of substrates of supraventricular tachycardia, application of two and three consecutive freeze-thaw cycles has been performed. The effect of triple freeze-thaw cycles on lesion formation within developing myocardium and coronary arteries, however, has not been studied yet. In eight piglets (mean age 15 weeks, weight 15-20 kg), 30 cryolesions (three consecutive freeze-thaw cycles) were applied to the atrial aspect of both AV valve annuli (n = 18) as well as to ventricular myocardium below the valves (n = 12)...
January 11, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28072428/3d-modelling-on-biodegradable-nanoparticle-enhanced-cryoablation-of-liver-tumor-based-on-real-anatomical-model
#6
S Y Xu, Z Z He, Y X Zhou, J Liu
BACKGROUND: Nanoparticle-enhanced freezing is of great importance for developing a conformal targeted cryoablation for liver tumor with complex shape. However, the safety and biocompatibility of nanoparticles should also be of major concerns. OBJECTIVE: This study is to investigate the enhanced cryoablation mediated by the MgO nanoparticles which are nontoxic, biodegradable, and have few side-effects on the human body. MATERIALS AND METHODS: A three-dimensional numerical model has been developed based on a real geometrical anatomical structure to characterize such nanocryosurgical freezing of liver tumor...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28066673/percutaneous-imaging-guided-cryoablation-for-lung-cancer
#7
REVIEW
Yi-Shi Zhang, Li-Zhi Niu, Ke Zhan, Zhong-Hai Li, Yu-Gang Huang, Yi Yang, Ji-Bing Chen, Ke-Cheng Xu
Percutaneous cryoablation under imaging guidance has been proved to be a safe and effective method for ablation and debulking of tumors, providing radical cure or palliation, as the case may be, for patients with different stages of disease. The local control rate is high with cryoablation, and the complications are usually controllable, making it a reasonable choice in lung cancer treatment. In this paper the technique and mechanism of action of cryoablation are summarized, and studies performed on the application of percutaneous cryoablation in various stages of lung cancer are reviewed...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28065886/cryoablation-vs-radiofrequency-ablation-for-treatment-of-paroxysmal-atrial-fibrillation-a-systematic-review-and-meta-analysis
#8
REVIEW
Yi-He Chen, Zhao-Yang Lu, Yin- Xiang, Jian-Wen Hou, Qian Wang, Hui Lin, Yi-Gang Li
AIMS: Cryoablation is a promising alternative technique to RF ablation for treating paroxysmal AF with encouraging results. However, data about the efficacy and safety comparison between cryoablation and RF ablation is still lacking. METHODS AND RESULTS: We systematically search the PubMed, the Cochrane Library, MEDLINE and Google Scholar databases, and finally identify 16 eligible studies including 7195 patients (2863 for cryoablation; 4332 for RF ablation). Freedom from AF/atrial tachycardial replase is slightly higher in cryoablation than RF ablation during a median 12 months of follow-up, with no statistical significant (RR: 1...
January 8, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28062180/determination-of-cryothermal-injury-thresholds-in-tissues-impacted-by-cardiac-cryoablation
#9
Ryan P Goff, Stephen G Quallich, Robert A Buechler, John C Bischof, Paul A Iaizzo
Despite widespread clinical use of cryoablation, there remain questions regarding dosing and treatment times which may affect efficacy and collateral injury. Dosing and treatment times are directly related to the degree of cooling necessary for effective lesion formation. Human and swine atrial, ventricular, and lung tissues were ablated using two cryoablation systems with concurrent infrared thermography. Post freeze-thaw samples were cultured and stained to differentiate viable and non-viable tissue. Matlab code correlated viability staining to applied freeze-thaw thermal cycles, to determine injury thresholds...
January 3, 2017: Cryobiology
https://www.readbyqxmd.com/read/28050693/technical-success-technique-efficacy-and-complications-of-minimally-invasive-imaging-guided-percutaneous-ablation-procedures-of-breast-cancer-a-systematic-review-and-meta-analysis
#10
Giovanni Mauri, Luca Maria Sconfienza, Lorenzo Carlo Pescatori, Maria Paola Fedeli, Marco Alì, Giovanni Di Leo, Francesco Sardanelli
OBJECTIVES: To systematically review studies concerning imaging-guided minimally-invasive breast cancer treatments. METHODS: An online database search was performed for English-language articles evaluating percutaneous breast cancer ablation. Pooled data and 95% confidence intervals (CIs) were calculated. Technical success, technique efficacy, minor and major complications were analysed, including ablation technique subgroup analysis and effect of tumour size on outcome...
January 3, 2017: European Radiology
https://www.readbyqxmd.com/read/28050658/development-of-a-searchable-database-of-cryoablation-simulations-for-use-in-treatment-planning
#11
F Edward Boas, Govindarajan Srimathveeravalli, Jeremy C Durack, Elena A Kaye, Joseph P Erinjeri, Etay Ziv, Majid Maybody, Hooman Yarmohammadi, Stephen B Solomon
PURPOSE: To create and validate a planning tool for multiple-probe cryoablation, using simulations of ice ball size and shape for various ablation probe configurations, ablation times, and types of tissue ablated. MATERIALS AND METHODS: Ice ball size and shape was simulated using the Pennes bioheat equation. Five thousand six hundred and seventy different cryoablation procedures were simulated, using 1-6 cryoablation probes and 1-2 cm spacing between probes. The resulting ice ball was measured along three perpendicular axes and recorded in a database...
January 3, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28043429/results-of-cryoablation-for-atrial-fibrillation-concomitant-with-video-assisted-minimally-invasive-mitral-valve-surgery
#12
Giovanni Marchetto, Matteo Anselmino, Chiara Rovera, Samuel Mancuso, Davide Ricci, Marina Antolini, Mara Morello, Fiorenzo Gaita, Mauro Rinaldi
Interest in minimally invasive video-assisted mitral valve surgery (MIMVS) is rapidly growing. Data on concomitant atrial fibrillation (AF) ablation to MIMVS are still lacking. The present study investigates the long-term results of AF cryoablation concomitant to MIMVS. From October 2006-September 2014, 68 patients with mitral valve disease (age 65.9 ± 11.1 years, 34 men out of 68 patients, Euroscore log 5.4 ± 4.5) and drug-resistant AF underwent MIMVS via right minithoracotomy and concomitant left-sided AF endocardial cryoablation (Cryoflex Medtronic, Minneapolis, MN)...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28035780/ultrasound-guided-cryoablation-of-a-traumatic-hip-disarticulation-neuroma
#13
Ryan R Ramsook, David Spinner
OBJECTIVE: Traumatic amputation at the pelvic level is a rare procedure with few studies addressing long-term complications. Painful neuroma formation may form at the site of nerve transection and cause significant impairments in daily living. Ultrasound-guided cryoablation therapy has grown in popularity and should be considered in patients with painful neuromas. This is a case report of complete pain relief in a patient with rare traumatic hip disarticulation with neuroma formation, treated with ultrasound-guided cryoablation...
November 7, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28034477/percutane-image-guided-cryoablation-of-painful-osseous-metastases-a-retrospective-single-center-review
#14
Tatum A McArthur, Carl A Narducci, Phillip H Lander, Robert Lopez-Ben
PURPOSE: Painful osseous metastases are a common problem in patients with malignancy, and they can be associated with significant morbidity owing to immobility, pain, pathologic fracture, or neurovascular compromise or all of these. We retrospectively evaluated pain levels and tumor enhancement in patients who underwent palliative percutaneous cryoablation for painful bone metastasis. METHODS: In this institutional review board-approved, health insurance portability and accountability act-compliant study, we retrospectively searched our department׳s picture archiving system for patients who underwent computed tomography (CT)-guided percutaneous cryoablation for treatment of painful metastatic osseous disease over a 6-year period (1/1/2005-12/31/2011)...
November 10, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28033149/partial-gland-ablation-in-the-management-of-prostate-cancer-a-review
#15
Timothy D McClure, Daniel J A Margolis, Jim C Hu
PURPOSE OF REVIEW: The index lesion theory has created a strong interest in partial gland ablation for men with prostate cancer. By only treating the focus of clinically significant disease and avoidance of surrounding periprostatic tissue, one may provide adequate oncologic control with minimal side effects. Accurate identification of the index lesion and effective ablation are critical for satisfactory oncologic outcomes. Herein, we review key ablative techniques used in partial gland ablation...
December 28, 2016: Current Opinion in Urology
https://www.readbyqxmd.com/read/28011104/microwave-ablation-of-renal-tumors-a-narrative-review-of-technical-considerations-and-clinical-results
#16
F H Cornelis, C Marcelin, J-C Bernhard
PURPOSE: The purpose of this review was to identify the specific technical considerations to adequately perform microwave ablations (MWA) of renal tumors and analyze the currently available clinical results. METHODS: Using Medline, a systematic review was performed including articles published between January 2000 and September 2016. English language original articles, reviews and editorials were selected based on their clinical relevance. RESULTS: MWA has several theoretical advantages over radiofrequency ablation in consistently providing higher intratumoral temperatures...
December 20, 2016: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28007093/bronchial-effects-of-cryoballoon-ablation-for-atrial-fibrillation
#17
Nishant Verma, Colin T Gillespie, A Christine Argento, Todd Tomson, Sanjay Dandamudi, Paloma Piña, Sukit Ringwala, Albert C Lin, Alexandru B Chicos, Susan Kim, Rishi Arora, Rod S Passman, Bradley P Knight
BACKGROUND: Damage to extracardiac structures, including the esophagus and phrenic nerve, is a known complication of cryoballoon ablation (CBA) during pulmonary vein (PV) isolation for atrial fibrillation (AF). Other adjacent structures, including the pulmonary bronchi and lung parenchyma, may be affected during CBA at the PV ostia. OBJECTIVE: The purpose of this study was to prospectively study the bronchial effects of CBA in humans undergoing CBA for PV isolation...
January 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28003679/acute-bowel-injury-due-to-cryoablation-for-renal-cell-carcinoma-correlated-radiologic-and-pathologic-findings
#18
Hideo Gobara, Takao Hiraki, Toshihiro Iguchi, Hiroyasu Fujiwara, Takeshi Nagasaka, Hiroyuki Kishimoto, Takehiro Tanaka, Susumu Kanazawa
An 87-year-old Japanese man underwent percutaneous cryoablation (PCA) therapy for his renal cell tumor. We displaced the colon from the tumor using hydrodissection. Computed tomography (CT) immediately after PCA was indicative of iceball extension to the colon wall, and a discontinuous enhancement of the colon wall was observed. We therefore performed an emergency surgery. On laparotomy, we observed a dark-purple area on the affected area of the colon, and the resected specimen showed focal, deep ulceration on the mucosal surface...
December 2016: Acta Medica Okayama
https://www.readbyqxmd.com/read/28002868/ultrasound-guided-cryoanalgesia-of-peripheral-nerve-lesions
#19
Sahlya Djebbar, Ignacio M Rossi, Ronald S Adler
The real-time nature of ultrasound makes it ideally suited to provide guidance for a variety of musculoskeletal interventional procedures involving peripheral nerves. Continuous observation of the needle ensures proper placement and allows continuous monitoring when performing localized ablative therapy and therefore more accurate positioning of a cryoprobe, use of smaller needles, as well as access to small structures. We describe our experience performing cryoablative procedures. Patients undergoing cryoneurolysis have largely reported varying degrees of long-term pain relief and improvement in function; no serious complications have yet been identified...
November 2016: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/27999919/interventional-radiology-management-of-a-ruptured-lumbar-artery-pseudoaneurysm-after-cryoablation-and-vertebroplasty-of-a-lumbar-metastasis
#20
Aldo Victor Giordano, Francesco Arrigoni, Federico Bruno, Sergio Carducci, Marco Varrassi, Luigi Zugaro, Antonio Barile, Carlo Masciocchi
We describe the management of a complication (a lumbar artery pseudoaneurysm and its rupture) after combined procedure (cryoablation and vertebroplasty) on a lumbar (L2) metastasis from renal cell carcinoma. Review of the literature is also presented with discussion about the measures to be taken to prevent these types of complications.
December 20, 2016: Cardiovascular and Interventional Radiology
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