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Journal of Visual Communication in... Oct 2023This research introduces an innovative series of time-lapse dissection videos that enable accelerated observation of the dissection process. Cadaveric dissection has...
This research introduces an innovative series of time-lapse dissection videos that enable accelerated observation of the dissection process. Cadaveric dissection has consistently been described in the literature as a reliable method for enhancing student understanding and visualisation, however as a process it is expensive and extremely time-consuming, hence it is often inaccessible to learners. When active dissection is unavailable, prosections can be used to teach anatomy, however a considerable amount of spatial and structural information is lost during the dissection process. These time-lapse videos demonstrate dissection quickly and accurately and allow an irreversible process to be rewound and rewatched with flexibility. Results suggest that time-lapse offers a comprehensive and engaging view of the dissection process that students appreciate being able to observe within a concise timeframe. Written annotation, audio narration and colourful highlighting were essential inclusions following student feedback. These videos can provide instruction before dissection classes or can expose the dissection process to learners without access to cadaveric specimens. However, certain invaluable elements of practical dissection are rooted within constructivism and cannot be replicated by video. Time-lapse dissection videos should therefore be used to supplement and not replace active dissection.
Topics: Humans; Computer-Assisted Instruction; Time-Lapse Imaging; Dissection; Cadaver; Anatomy; Students, Medical
PubMed: 38252467
DOI: 10.1080/17453054.2024.2304838 -
Current Problems in Cardiology Mar 2024In this study we correlated changes of risk factors for cardiovascular diseases with trends of age standardized mortality rates and burden for aortic aneurysms and... (Review)
Review
BACKGROUND
In this study we correlated changes of risk factors for cardiovascular diseases with trends of age standardized mortality rates and burden for aortic aneurysms and dissections.
METHODS
We analyzed data from the Global Burden of Diseases and EUROSTAT.
FINDINGS
There was a significant increase of expenditure for health from 1980 and 2019. In the period 1980-2000, despite higher health spending, age standardized mortality rates increased in almost all European countries. During the period 2000-2019, in Western European Countries and in Poland, Estonia, Latvia, Slovenia there was a correlation between higher health expenditure and decrease of ASMR. The most important changes between the period 1980-2000 and the period 2000-2019 was the proportion of health expenditure devoted to preventive care and to the increased use of aspirin and statins.
INTERPRETATION
Information about risk factors for cardiovascular diseases have leads to decreased aortic aneurysm related mortality and burden.
Topics: Humans; Aortic Aneurysm; Estonia; Aspirin; Risk Factors; Dissection
PubMed: 38184128
DOI: 10.1016/j.cpcardiol.2024.102384 -
European Archives of... Aug 2022To assess if 3D-4K exoscope is a valuable tool for temporal bone dissection and to evaluate its teaching potential.
PURPOSE
To assess if 3D-4K exoscope is a valuable tool for temporal bone dissection and to evaluate its teaching potential.
METHODS
Six consecutive 3D-4K-exoscope-assisted cortical mastoidectomies were performed by a novice, an intermediate and an expert surgeon (two dissections each). All dissections were entirely recorded and later evaluated independently by three other experienced surgeons. The dissection end-product was evaluated according to the Melbourne Mastoidectomy Scale (MMS). Paired t test was used to assess whether novice and intermediate surgeons have a score improvement in the second dissection compared to the first one. Surgeons' interactions, depth effect, and 3D impression were also assessed to perform a subjective analysis.
RESULTS
Mean MMS scores for the novice, intermediate and expert surgeon were 11.3 ± 2.8, 13.8 ± 3.9 and 19 ± 1.3, respectively. Paired t test demonstrated a statically significant improvement between the first and the second dissection both for the novice and the intermediate surgeon (+ 4.7 and + 7 points; p = 0.0002). A high-quality magnification of the temporal bone was obtained, allowing the expert surgeon to identify all the anatomical structures without injuring them. The exoscope was capable of providing a high involvement in the dissections with very effective interactions between the expert surgeon and the trainees, that had access to the same surgical field view.
CONCLUSION
3D-4K-exoscope resulted adequate for a safe and effective mastoidectomy and showed a high potential for training and educational purposes. It can represent a valid option for surgical training of temporal bone dissection and a new interactive tool to understand the complex temporal bone anatomy.
Topics: Dissection; Humans; Mastoidectomy; Microsurgery; Neurosurgical Procedures; Temporal Bone
PubMed: 34719728
DOI: 10.1007/s00405-021-07137-1 -
Gastrointestinal Endoscopy Clinics of... Jan 2023The risk-benefit profile of submucosal endoscopic procedures is generally favorable but there exist unique considerations regarding the recognition, treatment, and... (Review)
Review
The risk-benefit profile of submucosal endoscopic procedures is generally favorable but there exist unique considerations regarding the recognition, treatment, and prevention of submucosal endoscopic complications. Bleeding during the procedure can be managed with knife electrocautery, tamponade by injection of additional submucosal agent, or hemostatic forceps, depending on the location and degree of bleeding. Delayed bleeding should be managed with repeat endoscopy. Potential means to reduce the risk of delayed bleeding include anticipatory coagulation of visible vessels in the dissection ulcer base, applied hemostatic chemicals, snares, clips, and sheets of cultured cells.
Topics: Humans; Stomach Neoplasms; Retrospective Studies; Dissection; Endoscopy; Endoscopy, Gastrointestinal; Hemostatics
PubMed: 36375882
DOI: 10.1016/j.giec.2022.09.005 -
The Annals of Thoracic Surgery May 2020
Topics: Dissection; Humans; Replantation
PubMed: 31678472
DOI: 10.1016/j.athoracsur.2019.10.004 -
Journal of Visualized Experiments : JoVE Jul 2019Adipose tissues are complex organs with a wide array of functions, including storage and mobilization of energy in response to local and global needs, uncoupling of...
Adipose tissues are complex organs with a wide array of functions, including storage and mobilization of energy in response to local and global needs, uncoupling of metabolism to generate heat, and secretion of adipokines to regulate whole-body homeostasis and immune responses. Emerging research is identifying important regional differences in the developmental, molecular, and functional profiles of adipocytes located in discrete depots throughout the body. Different properties of the depots are medically relevant since metabolic diseases often demonstrate depot-specific effects. This protocol will provide investigators with a detailed anatomic atlas and dissection guide for the reproducible and accurate identification and excision of diverse mouse adipose tissues. Standardized dissection of discrete adipose depots will allow detailed comparisons of their molecular and metabolic characteristics and contributions to local and systemic pathologic states under various nutritional and environmental conditions.
Topics: Adipocytes; Adipose Tissue; Animals; Dissection; Humans; Mice; Obesity
PubMed: 31355801
DOI: 10.3791/59499 -
Anatomical Sciences Education 2023Historically, adverse events have reflected poorly on both the practice of dissection and the perception of the discipline of anatomy. The recent public dissection of a...
Historically, adverse events have reflected poorly on both the practice of dissection and the perception of the discipline of anatomy. The recent public dissection of a body donor is a regression to an unethical historical practice and was strongly denounced by anatomists around the world. The individual whose donated body was sourced from a 'for-profit" company in the United States had not given consent for a public dissection. This violates the ethics surrounding consent and body donation and potentially places the future of body donor programs in jeopardy as it compromises community frameworks around epistemic trust. Recent guiding frameworks by international anatomical associations on the ethical use of bodies have cemented the way in which body donor programs should operate. This viewpoint reflects on past and current events pertaining to public dissections and questions how these indignities may influence the public's interaction with human bodies. The authors argue that public dissection should be prohibited as it is against social mores. Social pressure should be applied to individuals or companies who wish to profit from unethical anatomical practice and legislation prohibiting public dissection should be introduced in those countries where it does not yet exist.
Topics: Humans; Anatomy; Cadaver; Dissection; Tissue Donors; Anatomists
PubMed: 36683409
DOI: 10.1002/ase.2256 -
Gut and Liver Mar 2020Therapeutic endoscopic resection has gained favor for its ability to achieve high en bloc and histologically complete resection rates via a minimally invasive approach.... (Review)
Review
Therapeutic endoscopic resection has gained favor for its ability to achieve high en bloc and histologically complete resection rates via a minimally invasive approach. The main technical difficulties faced by interventionists are first the lack of traction causing suboptimal visualization of the dissection field and second, the lack of triangulation using existing therapeutic apparatuses. These challenges can be overcome with the use of robots and the multiple degrees of freedom afforded by the robotic wrists. Nevertheless, complications such as bleeding and perforation can occur. It is hence beneficial for the robotic device to be equipped with additional abilities such as suturing. Once the robotic prototypes have been fully optimized and marketed, a structured program should be instituted to ensure proper and adequate training of the end-users. The future of robotics should then explore the possibility of developing a soft robot or a robot with more natural human-like movements. A robot with a force feedback mechanism would be superior and improve safety. Eventually, a supervised autonomous robot may perform interventions with greater precision and accuracy than an expert procedurist. This review describes the benefits of robot-assisted endoscopic resections, recent developments aimed at managing iatrogenic complications and future directions for robotic endoscopy.
Topics: Dissection; Endoscopy; Humans; Robotic Surgical Procedures
PubMed: 31158954
DOI: 10.5009/gnl19047 -
Gastrointestinal Endoscopy Clinics of... Jan 2023Endoscopic submucosal dissection (ESD) is a technically complex and still evolving procedure. As a result, there are many advances in the technology and tools available... (Review)
Review
Endoscopic submucosal dissection (ESD) is a technically complex and still evolving procedure. As a result, there are many advances in the technology and tools available to assist the endoscopist. This article delves into the various tools developed for ESD including electrosurgical knives, caps, injection agents, and traction devices. The authors discuss tools available as well as their respective pros, cons, and technical considerations for use. Overall, the choice of tools depends on a multitude of factors from availability, cost, lesion characteristics, and the endoscopist's familiarity and proficiency.
Topics: Humans; Dissection; Endoscopic Mucosal Resection; Endoscopy, Gastrointestinal; Treatment Outcome
PubMed: 36375879
DOI: 10.1016/j.giec.2022.09.001 -
Journal of Visualized Experiments : JoVE Sep 2021Accessibility to germ cells allows the study of germ cell development, meiosis, and recombination. The sexual biotype of the freshwater planarian, Schmidtea...
Accessibility to germ cells allows the study of germ cell development, meiosis, and recombination. The sexual biotype of the freshwater planarian, Schmidtea mediterranea, is a powerful invertebrate model to study the epigenetic specification of germ cells. Unlike the large number of testis and male germ cells, planarian oocytes are relatively difficult to locate and examine, as there are only two ovaries, each with 5-20 oocytes. Deeper localization within the planarian body and lack of protective epithelial tissues also make it challenging to dissect planarian ovaries directly. This protocol uses a brief fixation step to facilitate the localization and dissection of planarian ovaries for downstream analysis to overcome these difficulties. The dissected ovary is compatible for ultrastructural examination by transmission electron microscopy (TEM) and antibody immunostaining. The dissection technique outlined in this protocol also allows for gene perturbation experiments, in which the ovaries are examined under different RNA interference (RNAi) conditions. Direct access to the intact germ cells in the ovary achieved by this protocol will greatly improve the imaging depth and quality and allow cellular and subcellular interrogation of oocyte biology.
Topics: Animals; Dissection; Female; Germ Cells; Male; Ovary; Planarians; Staining and Labeling
PubMed: 34570108
DOI: 10.3791/62713