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Surgical anatomy

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https://www.readbyqxmd.com/read/28340164/denervation-of-the-extrinsic-cardiac-sympathetic-nervous-system-as-a-treatment-modality-for-arrhythmia
#1
Chance M Witt, Luciana Bolona, Michelle O Kinney, Christopher Moir, Michael J Ackerman, Suraj Kapa, Samuel J Asirvatham, Christopher J McLeod
Denervation of the extrinsic cardiac sympathetic nervous system is a method of altering the autonomic tone experienced by the heart and vasculature. It has been studied and employed as a therapy for cardiac disease for decades. Currently, there is a high level of interest in using cardiac denervation for treatment of arrhythmias. This review describes the anatomy and physiology of the cardiac autonomic nervous system followed by a discussion of the mechanistic studies which provide a basis for the therapeutic use of sympathetic denervation...
March 10, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28338438/learning-brain-aneurysm-microsurgical-skills-in-a-human-placenta-model-predictive-validity
#2
Marcelo Magaldi Ribeiro de Oliveira, Carlos Eduardo Ferrarez, Taise Mosso Ramos, Jose Augusto Malheiros, Arthur Nicolato, Carla Jorge Machado, Mauro Tostes Ferreira, Fellype Borges de Oliveira, Cecília Félix Penido Mendes de Sousa, Pollyana Helena Vieira Costa, Sebastiao Gusmao, Giuseppe Lanzino, Rolando Del Maestro
OBJECTIVE Surgery for brain aneurysms is technically demanding. In recent years, the process to learn the technical skills necessary for these challenging procedures has been affected by a decrease in the number of surgical cases available and progressive restrictions on resident training hours. To overcome these limitations, surgical simulators such as cadaver heads and human placenta models have been developed. However, the effectiveness of these models in improving technical skills is unknown. This study assessed concurrent and predictive validity of brain aneurysm surgery simulation in a human placenta model compared with a "live" human brain cadaveric model...
March 24, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28338309/impact-of-personalized-three-dimensional-3d-printed-pelvicalyceal-system-models-on-patient-information-in-percutaneous-nephrolithotripsy-surgery-a-pilot-study
#3
Hasan Anil Atalay, H Lütfi Canat, Volkan Ülker, İlter Alkan, Ünsal Özkuvanci, Fatih Altunrende
OBJECTIVE: To investigate the impact of personalized three dimensional (3D) printed pelvicalyceal system models on patient information before percutaneous nephrolithotripsy surgery. MATERIAL AND METHODS: Patients with unilateral complex renal stones with indicatation of percutaneous nephrolithotripsy surgery were selected. Usable data of patients were obtained from CT scans as Digital Imaging and Communications in Medicine (DICOM) format. Mimics software version 16...
March 24, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28338305/prostate-cancer-in-renal-transplant-recipients
#4
Benjamin A Sherer, Krishnan Warrior, Karl Godlewski, Martin Hertl, Oyedolamu Olaitan, Ajay Nehra, Leslie Allan Deane
As patients with end-stage renal disease are receiving renal allografts at older ages, the number of male renal transplant recipients (RTRs) being diagnosed with prostate cancer (CaP) is increasing. Historically, the literature regarding the management of CaP in RTR's is limited to case reports and small case series. To date, there are no standardized guidelines for screening or management of CaP in these complex patients. To better understand the unique characteristics of CaP in the renal transplant population, we performed a literature review of PubMed, without date limitations, using a combination of search terms including prostate cancer, end stage renal disease, renal transplantation, prostate cancer screening, prostate specific antigen kinetics, immunosuppression, prostatectomy, and radiation therapy...
March 24, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28337460/caudal-epidural-block-an-updated-review-of-anatomy-and-techniques
#5
REVIEW
Sheng-Chin Kao, Chia-Shiang Lin
Caudal epidural block is a commonly used technique for surgical anesthesia in children and chronic pain management in adults. It is performed by inserting a needle through the sacral hiatus to gain entrance into the sacral epidural space. Using conventional blind technique, the failure rate of caudal epidural block in adults is high even in experienced hands. This high failure rate could be attributed to anatomic variations that make locating sacral hiatus difficult. With the advent of fluoroscopy and ultrasound in guiding needle placement, the success rate of caudal epidural block has been markedly improved...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28337049/use-of-3d-printed-bone-plate-in-novel-technique-to-surgically-correct-hallux-valgus-deformities
#6
Kathryn E Smith, Kenneth M Dupont, David L Safranski, Jeremy Blair, Dawn Buratti, Vladimir Zeetser, Ryan Callahan, Jason Lin, Ken Gall
Three-dimensional (3-D) printing offers many potential advantages in designing and manufacturing plating systems for foot and ankle procedures that involve small, geometrically complex bony anatomy. Here, we describe the design and clinical use of a Ti-6Al-4V ELI bone plate (FastForward™ Bone Tether Plate, MedShape, Inc., Atlanta, GA) manufactured through 3-D printing processes. The plate protects the second metatarsal when tethering suture tape between the first and second metatarsals and is a part of a new procedure that corrects hallux valgus (bunion) deformities without relying on doing an osteotomy or fusion procedure...
September 2016: Techniques in Orthopaedics: TIO
https://www.readbyqxmd.com/read/28335153/laparoscopic-surgery-versus-endovascular-treatment-for-abdominal-aortic-aneurysms-in-patients-with-a-normal-surgical-risk-and-a-favorable-anatomy
#7
Raphaël Coscas, Henri Lamas, Isabelle Javerliat, Amélie Mlynski, Olivier Goëau-Brissonnière, Marc Coggia
No abstract text is available yet for this article.
January 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28334998/spatiotemporal-mapping-of-epileptic-spikes-using-simultaneous-eeg-functional-mri
#8
Jennifer M Walz, Mangor Pedersen, Amir Omidvarnia, Mira Semmelroch, Graeme D Jackson
Epileptic spikes occur on the sub-second timescale and are known to involve not only epileptic foci but also large-scale distributed brain networks. There is likely to be a sequence of neural activity in multiple brain regions that occurs within the duration of a single spike, but standard electroencephalography-functional magnetic resonance imaging analyses, which use only the timing of the spikes to model the functional magnetic resonance imaging data, cannot determine the sequence of these activations. Our aim in this study is to temporally resolve these spatial activations to observe the spatiotemporal dynamics of the spike-related neural activity at a sub-second timescale...
February 20, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28333429/multimodality-imaging-to-plan-and-guide-transcatheter-tricuspid-valve-interventions
#9
Edgard A Prihadi, Victoria Delgado, Jeroen J Bax
Tricuspid regurgitation (TR) is a highly prevalent valvular heart disease. The natural history of untreated significant TR portends an unfavourable outcome, but only a minority of patients is currently referred for surgical treatment. Organic TR (caused by primary abnormality of the leaflets) is relatively infrequent whereas secondary or functional TR (caused by dilatation of the tricuspid annulus, right ventricle [RV] and right atrium) is the predominant mechanism. The success of transcatheter therapies for left valvular heart disease over the last decade, has fuelled similar development of novel transcatheter devices for the treatment of TR...
March 23, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28332088/simple-technique-of-repair-for-barlow-syndrome-with-posterior-resection-and-chordal-transfer-via-minimally-invasive-approach-primary-experience-in-a-consecutive-series-of-22-patients
#10
H Kamiya, Payam Akhyari, J-P Minol, A C Ites, T Weinreich, S Sixt, P Rellecke, U Boeken, A Albert, A Lichtenberg
OBJECTIVE: Current techniques for mitral valve repair (MVR) in Barlow's disease require high level of surgical expertise due to a complex anatomy. A novel and simple standardized technique that particularly considers the pathological changes of the mitral valve in Barlow's disease has been developed. METHODS: Between 2009 and 2013, 22 patients underwent minimally invasive MVR for Barlow's disease and severe mitral regurgitation (MR). A simple, standardized technique was applied, including resection of P2 segment of posterior mitral leaflet (PML) with preservation of the shortest chordae, transfer of the preserved chordae to A2, and implantation of a semi-rigid open ring...
March 22, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28331142/usefulness-of-color-coding-resected-samples-from-a-pancreaticoduodenectomy-with-tissue-marking-dyes-for-a-detailed-examination-of-surgical-margin-surrounding-the-uncinate-process-of-the-pancreas
#11
Satoshi Mizutani, Hideyuki Suzuki, Takayuki Aimoto, Seiji Yamagishi, Keisuke Mishima, Masanori Watanabe, Yasuhiko Kitayama, Norio Motoda, Saiko Isshiki, Eiji Uchida
BACKGROUND: Characteristics of a cancer-positive margin around a resected uncinate process of the pancreas (MUP) due to a pancreticoduodenectomy are difficult to understand by standardized evaluation because of its complex anatomy. The purposes of this study were to subclassify the MUP with tissue marking dyes of different colors and to identify the characteristics of sites that showed positivity for cancer cells in patients with pancreatic head carcinoma who underwent circumferential superior mesenteric arterial nerve plexus-preserving pancreaticoduodenectomy...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28329918/-endoscopic-ultrasound-guided-biliary-drainage
#12
REVIEW
Hyeong Seok Nam, Dae Hwan Kang
The therapeutic role of endoscopic ultrasound (EUS) has continued to evolve in recent years. EUS-guided biliary drainage (EUS-BD) can be performed as an effective alternative to percutaneous drainage or surgical options when conventional Endoscopic retrograde cholangiopancreatography fails or is not possible. Depending on the access and exit routes of the stent, multiple approaches to EUS-BD have been proposed. Each patient should receive an individualized approach based on the patient's condition, anatomy, and endoscopist's experience, with an appropriate backup prepared...
March 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28329462/preoperative-use-of-ct-angiography-in-infants-with-coarctation-of-the-aorta
#13
Kirsten Rose-Felker, Joshua D Robinson, Carl L Backer, Cynthia K Rigsby, Osama M Eltayeb, Michael C Mongé, Karen Rychlik, Christina L Sammet, Jeffrey G Gossett
BACKGROUND: Computed tomographic angiography (CTA) and echocardiography (echo) are used preoperatively in coarctation of the aorta to define arch hypoplasia and great vessel branching. We sought to determine differences in quantitative measurements, as well as surgical utility, between modalities. METHODS: Infants (less than six months) with both CTA and echo prior to coarctation repair from 2004 to 2013 were included. Measurements were compared and correlated with surgical approach...
March 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28329178/intraoperative-coronary-revision-but-not-coronary-pattern-is-associated-with-mortality-after-arterial-switch-operation%C3%A2
#14
Matteo Trezzi, Angelo Polito, Antonio Albano, Sonia B Albanese, Enrico Cetrano, Adriano Carotti
OBJECTIVES: We sought to determine differences in baseline characteristics and clinical outcomes in a consecutive series of patients undergoing arterial switch operation (ASO), assessing the effect of coronary anatomy on postoperative mortality, both overall and adjusted for surgical era. METHODS: From January 2000 to May 2015, 283 consecutive patients underwent ASO for transposition of the great arteries. A total of 103 patients (36.4%) had an associated ventricular septal defect and 23 (8...
March 18, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28329105/medical-three-dimensional-printing-opens-up-new-opportunities-in-cardiology-and-cardiac-surgery
#15
Thomas Bartel, Andrew Rivard, Alejandro Jimenez, Carlos A Mestres, Silvana Müller
Advanced percutaneous and surgical procedures in structural and congenital heart disease require precise pre-procedural planning and continuous quality control. Although current imaging modalities and post-processing software assists with peri-procedural guidance, their capabilities for spatial conceptualization remain limited in two- and three-dimensional representations. In contrast, 3D printing offers not only improved visualization for procedural planning, but provides substantial information on the accuracy of surgical reconstruction and device implantations...
February 16, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28328842/three-dimensional-printing-and-computer-navigation-assisted-hemipelvectomy-for-en-bloc-resection-of-osteochondroma-a-case-report
#16
Yaqing Zhang, Lianjiang Wen, Jun Zhang, Guoliang Yan, Yue Zhou, Bo Huang
RATIONALE: Three-dimensional (3D) printed templates can be designed to match an individual's anatomy, allowing surgeons to refine preoperative planning. In addition, the use of computer navigation (NAV) is gaining popularity to improve surgical accuracy in the resection of pelvic tumors. However, its use in combination with 3D printing to assist complex pelvic tumor resection has not been reported. PATIENT CONCERNS: A 36-year-old man presented with left-sided pelvic pain and a fast-growing mass...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327921/the-superior-cerebellar-artery-aneurysm-a-posterior-circulation-aneurysm-with-favorable-microsurgical-outcomes
#17
Ana Rodríguez-Hernández, Brian P Walcott, Harjus Birk, Michael T Lawton
BACKGROUND: Superior cerebellar artery (SCA) aneurysms are usually grouped with aneurysms that arise from the upper basilar artery or more broadly, the posterior circulation. However, the SCA aneurysm has distinctive anatomy that facilitates safe surgical management, notably few associated perforating arteries, and excellent exposure in the carotid-oculomotor triangle. OBJECTIVE: To demonstrate the outcomes of patients treated with microsurgery in a continuous surgical series...
January 24, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28326215/osteoradionecrosis-of-the-temporal-bone-leading-to-cerebellar-abscess
#18
Thomas B Layton
Squamous cell carcinoma of the temporal bone is a rare and destructive malignancy and represents both diagnostic and therapeutic challenge. The complex regional anatomy of the temporal bone requires equally intricate surgical techniques to adequately resect the tumour mass during surgical excision. Adjuvant radiotherapy is offered to patients with advanced disease and has been showed to confer a survival benefit in carefully selected patients. One feared complication of radiotherapy is osteoradionecrosis and is a major obstacle faced in the treatment of head and neck cancers...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28324187/frontal-burr-hole-approach-for-neuroendoscopic-resection-of-craniopharyngioma-with-the-nico-myriad-device-report-of-two-cases
#19
Reilin J Moore, Andrea Scherer, Daniel H Fulkerson
OBJECTIVE: Craniopharyngiomas are challenging tumors to resect due to their deep location and proximity to vital structures. The perceived benefit of gross total resection may be tempered by the possibility of permanent disability. Minimally invasive techniques may reduce surgical morbidity while still allowing effective resection. The authors describe their initial experience with a neuroendoscopic transcortical, transventricular approach to two craniopharyngiomas. The surgeries were performed through a right frontal burr hole using the NICO Myriad, a side-cutting, aspiration device that fits through the working channel of a standard neuroendoscope...
March 21, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28322287/anatomy-of-the-retrohepatic-tunnel-in-a-chinese-population-and-its-clinical-application-in-liver-surgery
#20
Wang Zheng, Ding Zi-Hai, Zhou Jie, Zhong Shi-Zhen, Lin Jian-Hua, Lin Yi-Xiong
Liver hanging maneuver (LHM) is an important technique in liver surgery. However, applied anatomy of the retrohepatic tunnel for the surgical approach in Chinese population needs further study. In this study, to explore the basic anatomy of retrohepatic tunnel and its clinical application in a Chinese population, a total of 32 formalin-fixed cadavers were dissected, related parameters were measured, and their clinical applications were discussed. The length of the retrohepatic tunnel was (60.6 ± 9.9) mm...
March 21, 2017: Scientific Reports
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