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Surgical simulation

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https://www.readbyqxmd.com/read/28087244/practice-makes-perfect-correlations-between-prior-experience-in-high-level-athletics-and-robotic-surgical-performance-do-not-persist-after-task-repetition
#1
Kevin Shee, Fady M Ghali, Elias S Hyams
OBJECTIVE: Robotic surgical skill development is central to training in urology as well as in other surgical disciplines. Here, we describe a pilot study assessing the relationships between robotic surgery simulator performance and 3 categories of activities, namely, videogames, musical instruments, and athletics. DESIGN: A questionnaire was administered to preclinical medical students for general demographic information and prior experiences in surgery, videogames, musical instruments, and athletics...
January 10, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28079687/periocular-amyloidosis-manifesting-as-pseudopemphigoid-treated-with-mitomycin-c
#2
Kaveh Vahdani, Vladimir T Thaller, Giorgio Albanese, Andrew F Dean
PURPOSE: To describe an unusual cicatrizing manifestation of periocular amyloid and the utility of adjuvant antimetabolite therapy. METHODS: This is a case report of a 49-year old woman with progressive bilateral upper lid ptosis, who was found to have bilateral inferior forniceal masses with thickening of the conjunctiva. Conjunctival and eyelid biopsies showed evidence of amyloid deposition. Systemic evaluation did not reveal any evidence of systemic amyloidosis...
January 11, 2017: Cornea
https://www.readbyqxmd.com/read/28079471/pre-implant-modeling-of-depth-lead-placement-in-white-matter-for-maximizing-the-extent-of-cortical-activation-during-direct-neurostimulation-therapy
#3
Leopoldo Cendejas Zaragoza, Richard W Byrne, Marvin A Rossi
INTRODUCTION: The objective of this work was to predict preoperatively the maximum extent to which direct stimulation therapy can propagate through an epileptic circuit for stabilizing refractory focal-onset epilepsy. A pre-surgical workflow is presented which comprises a computationally intensive process for calculating the volume of cortical activation (VOCA) surrounding cylindrical depth contacts virtually placed in white matter. The process employs an activation function (AF) derived from cable modeling of an axon...
January 12, 2017: Neurological Research
https://www.readbyqxmd.com/read/28078455/retention-of-laparoscopic-and-robotic-skills-among-medical-students-a-randomized-controlled-trial
#4
Megan S Orlando, Lauren Thomaier, Melinda G Abernethy, Chi Chiung Grace Chen
BACKGROUND: Although simulation training beneficially contributes to traditional surgical training, there are less objective data on simulation skills retention. OBJECTIVE: To investigate the retention of laparoscopic and robotic skills after simulation training. METHODS: We present the second stage of a randomized single-blinded controlled trial in which 40 simulation-naïve medical students were randomly assigned to practice peg transfer tasks on either laparoscopic (N = 20, Fundamentals of Laparoscopic Surgery, Venture Technologies Inc...
January 11, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28076623/low-cost-simulator-for-heart-surgery-training
#5
Roberto Rocha E Silva, Artur Lourenção, Maxim Goncharov, Fabio B Jatene
Objective: Introduce the low-cost and easy to purchase simulator without biological material so that any institution may promote extensive cardiovascular surgery training both in a hospital setting and at home without large budgets. Methods: A transparent plastic box is placed in a wooden frame, which is held by the edges using elastic bands, with the bottom turned upwards, where an oval opening is made, "simulating" a thoracotomy. For basic exercises in the aorta, the model presented by our service in the 2015 Brazilian Congress of Cardiovascular Surgery: a silicone ice tray, where one can train to make aortic purse-string suture, aortotomy, aortorrhaphy and proximal and distal anastomoses...
November 2016: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28071714/three-dimensional-surgical-simulation-improves-the-planning-for-correction-of-facial-prognathism-and-asymmetry-a-qualitative-and-quantitative-study
#6
Cheng-Ting Ho, Hsiu-Hsia Lin, Eric J W Liou, Lun-Jou Lo
Traditional planning method for orthognathic surgery has limitations of cephalometric analysis, especially for patients with asymmetry. The aim of this study was to assess surgical plan modification after 3-demensional (3D) simulation. The procedures were to perform traditional surgical planning, construction of 3D model for the initial surgical plan (P1), 3D model of altered surgical plan after simulation (P2), comparison between P1 and P2 models, surgical execution, and postoperative validation using superimposition and root-mean-square difference (RMSD) between postoperative 3D image and P2 simulation model...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070866/finite-element-analysis-of-patient-specific-mitral-valve-with-mitral-regurgitation
#7
Thuy Pham, Fanwei Kong, Caitlin Martin, Qian Wang, Charles Primiano, Raymond McKay, John Elefteriades, Wei Sun
Functional mitral regurgitation (FMR) is a significant complication of left ventricular dysfunction and strongly associated with a poor prognosis. In this study, we developed a patient-specific finite element (FE) model of the mitral apparatus in a FMR patient which included: both leaflets with thickness, annulus, chordae tendineae, and chordae insertions on the leaflets and origins on the papillary muscles. The FE model incorporated human age- and gender-matched anisotropic hyperelastic material properties, and MV closure at systole was simulated...
January 9, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28066674/three-dimensional-computed-tomography-bronchography-and-angiography-in-the-preoperative-evaluation-of-thoracoscopic-segmentectomy-and-subsegmentectomy
#8
REVIEW
Wei-Bing Wu, Xin-Feng Xu, Wei Wen, Jing Xu, Quan Zhu, Xiang-Long Pan, Yang Xia, Liang Chen
Thoracoscopic pulmonary segmentectomy is technically meticulous due to the complicated anatomical variations of segmental bronchus and vessels. Currently three dimensional-computed tomography angiography (3D-CTA) could only meet the simple requirements of segmentectomy. Our center developed a software for reconstruction, "deepinsight", which could effectively solve some key technical problems. Preoperative three-dimensional computed tomography bronchography and angiography (3D-CTBA) could reveal the anatomical structures and improve the accuracy of operation...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28065193/incidence-of-surgical-site-infections-cannot-be-derived-reliably-from-point-prevalence-survey-data-in-dutch-hospitals
#9
A P Meijs, J A Ferreira, S C DE Greeff, M C Vos, M B G Koek
Thorough studies on whether point prevalence surveys of healthcare-associated infections (HAIs) can be used to reliably estimate incidence of surgical site infections (SSIs) are scarce. We examined this topic using surveillance data of 58 hospitals that participated in two Dutch national surveillances; HAI prevalence and SSI incidence surveillance, respectively. First, we simulated daily prevalences of SSIs from incidence data. Subsequently, Rhame & Sudderth's formula was used to estimate SSI incidence from prevalence...
January 9, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28063468/computational-fluid-dynamics-and-aortic-thrombus-formation-following-thoracic-endovascular-aortic-repair
#10
Foeke J H Nauta, Kevin D Lau, Christopher J Arthurs, Kim A Eagle, David M Williams, Santi Trimarchi, Himanshu J Patel, Carlos A Figueroa
BACKGROUND: We present the possible utility of computational fluid dynamics in the assessment of thrombus formation and virtual surgical planning illustrated in a patient with aortic thrombus in a kinked ascending aortic graft following thoracic endovascular aortic repair. METHODS: A patient-specific three-dimensional model was built from computed tomography. Additionally, we modeled 3 virtual aortic interventions to assess their effect on thrombosis potential: (1) open surgical repair, (2) conformable endografting, and (3) single-branched endografting...
January 4, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28062353/indentation-across-interfaces-between-stiff-and-compliant-tissues
#11
Oliver E Armitage, Michelle L Oyen
Bone-tendon, bone-ligament and bone-cartilage junctions are multi-tissue interfaces that connect materials that differ by two orders of magnitude in mechanical properties, via gradual variations in mineral content and matrix composition. These sites mediate load transfer between highly dissimilar materials and are consequently a primary site of injury during orthopedic failure. Given the large incidence rate and the lack of suitable surgical solutions for their regeneration or repair, characterization of their natural structure and subsequent replication through tissue engineering is important...
January 3, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28059960/-contemplating-the-next-maneuver-functional-neuroimaging-reveals-intraoperative-decision-making-strategies
#12
Daniel Richard Leff, Gabriella Yongue, Ivo Vlaev, Felipe Orihuela-Espina, David James, Michael J Taylor, Thanos Athanasiou, Ray Dolan, Guang-Zhong Yang, Ara Darzi
OBJECTIVE: To investigate differences in the quality, confidence, and consistency of intraoperative surgical decision making (DM) and using functional neuroimaging expose decision systems that operators use. SUMMARY BACKGROUND DATA: Novices are hypothesized to use conscious analysis (effortful DM) leading to activation across the dorsolateral prefrontal cortex, whereas experts are expected to use unconscious automation (habitual DM) in which decisions are recognition-primed and prefrontal cortex independent...
February 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28056246/-the-present-status-and-future-prospects-of-application-of-digital-medical-technology-in-general-surgery-in-china
#13
C H Fang, Y Y LauWan, W Cai
It has been almost 10 years since digital medical technology has started to becommonly used in general surgery in China.Led by advances in three dimensional(3D) visualization technology, virtual reality, simulation surgery, and 3D printing, digital medical technology have played important roles in changing the current practice of general surgery in China to become more effective by improving diagnostic accuracy and a better choice of therapeutic procedure with a resultant increased surgical success rate and a decreased surgical risks...
January 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28056127/applications-of-robotic-testing-systems-in-orthopaedics
#14
Richard E Debski, Satoshi Yamakawa, Volker Musahl, Hiromichi Fujie
Diarthrodial joint function is mediated by a complex interaction between bones, ligaments, capsules, articular cartilage, and muscles. To gain a better understanding of injury mechanisms and to improve surgical procedures, more scientific knowledge on the biomechanics of diarthrodial joints needs to be obtained. Robotic testing systems have been developed to measure kinematics and in situ forces in ligaments and their reconstructions using cadaveric diarthrodial joints. These 6 degree-of-freedom (DOF) robotic testing systems can be controlled in either position or force modes to simulate physiological loading conditions or clinical exams...
January 5, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28055027/interdisciplinary-onsite-team-based-simulation-training-in-the-neonatal-intensive-care-unit-a-pilot-report
#15
D J W Reed, R L Hermelin, C S Kennedy, J Sharma
OBJECTIVE: Simulation training improves individual clinician confidence, performance and self-efficacy in resuscitation and procedural training experiences. The reality of resuscitation experiences in the neonatal intensive care unit (NICU) is that they are team-accomplished events. However, limited data exist on team-based simulation training (TBST) in the NICU. We report the experience of TBST over a 4-year period. STUDY DESIGN: This is a retrospective report of 65 TBST events in a 71-bed Level IV NICU at a regional subspecialty children's hospital...
January 5, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28054923/descriptive-longitudinal-study-results-applied-to-statistical-models-to-assess-the-impact-of-early-microbiological-cultures-on-the-economic-burden-of-treatment-for-infected-diabetic-foot-ulcers-at-a-mexican-public-health-facility
#16
Luz-Ma-Adriana Balderas-Peña, Daniel Sat-Muñoz, Rosa-Emilia Ramírez-Conchas, Moisés-Roberto Alvarado-Iñiguez, Javier-Eduardo García-de-Alba-García, Eduardo Cruz-Corona, José-Luis Chávez-Hurtado, José-Martín Chagollán-Ramírez
Infection plays a critical role in health care and impacts the cost of the treatment of diabetic foot ulcers (DFU). To examine the cost reduction associated with the multidisciplinary treatment of infected DFU (IDFU) by obtaining early (ie, within 48 hours of admission) microbiological culture results, a descriptive, longitudinal study was conducted. Data were collected prospectively from patient medical charts of a cohort of 67 patients (mean age, 56.14 ± 12.3 years; mean duration of diabetes, 14.95 ± 8 years) with IDFU treated at a Mexican public health facility from January 1 to April 30, 2010...
December 2016: Ostomy/wound Management
https://www.readbyqxmd.com/read/28052886/intestinal-rehabilitation-for-children-with-intestinal-failure-is-cost-effective-a-simulation-study
#17
Henk Groen, Esther G Neelis, Marten J Poley, Joanne F Olieman, René Scheenstra, Paul Fm Krabbe, Gerard Dijkstra, Edmond Hhm Rings
BACKGROUND: Children with intestinal failure (IF) depend on parenteral nutrition (PN). The goal in the treatment of IF is to wean children off PN through intestinal rehabilitation (IR). Although the healthcare burden of IF is enormous, to our knowledge there has been no previous cost-effectiveness analysis in pediatric IF including IR. OBJECTIVE: We sought to determine the cost-effectiveness of IR in terms of costs and life-years. DESIGN: We simulated the treatment of IF in children in a discrete-event model...
January 4, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28050202/sialendoscopy-training-presentation-of-a-realistic-model
#18
Gabriela Robaskewicz Pascoto, Aldo Cassol Stamm, Marcos Lyra
Introduction Several surgical training simulators have been created for residents and young surgeons to gain experience with surgical procedures. Laboratory training is fundamental for acquiring familiarity with the techniques of surgery and skill in handing instruments. Objective The aim of this study is to present a novel simulator for training sialendoscopy. Method This realistic simulator was built with a synthetic thermo-retractile, thermo-sensible rubber which, when combined with different polymers, produces more than 30 different formulas...
January 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28048699/su-f-t-126-microdosimetic-evaluation-of-proton-energy-distributions-in-the-vicinity-of-metal-implants
#19
S Heczko, G A McAuley, J M Slater, A Wroe
PURPOSE: To evaluate the impact of titanium and surgical stainless steel implants on the microscopic dose distribution in proton treatment plans METHODS: Geant4 Monte Carlo simulations were used to analyze the microdosimetric distribution of proton radiation in the vicinity of 3.1 mm thick CP Grade 4 titanium (Ti) or 316 stainless steel (SS316) plates in a water phantom. Additional simulations were performed using either water, or water with a density equivalent to the respective metals (Tiwater, SS316water) (to reflect common practice in treatment planning)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048364/we-fg-207a-01-introduction-to-dedicated-breast-ct-early-studies
#20
S Vedantham
: Mammography-based screening has been a valuable imaging tool for the early detection of non-palpable lesions and has contributed to significant reduction in breast cancer associated mortality. However, the breast imaging community recognizes that mammography is not ideal, and in particular is inferior for women with dense breasts. Also, the 2-D projection of a 3-D organ results in tissue superposition contributing to false-positives. The sensitivity of mammography is breast-density dependent...
June 2016: Medical Physics
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