Search results for "Dissection"
showing 10 items of 396 documents
Disentangling scattered charcoal assemblages for palimpsest dissection: Spatial analyses from El Salt Stratigraphic Unit Xb (Eastern Iberia)
2017
International audience; Disentangling scattered charcoal assemblages for palimpsest dissection: spatial analyses from El Salt Stratigraphic unit Xb (Eastern Iberia)
A DISSECTION’S GUIDE TO HUMAN ABDOMINAL CAVITY
2020
The purpose of this article is to show the abdominal cavity’s dissection method. In the summer of 2018 a group of students from the University of Palermo, who had already taken the anatomy exam and had a good knowledge of English, went for a period of two weeks to do a dissection course at the University of Malta. The students dissected skin, subcutaneously, muscle layers, parietal peritoneum and abdominal organs. This work proves to be a small dissection guide for young medical students who want to learn the main bases of dissection and important information for topographical anatomy.
Sequence of vascular patterning and gene transcription in the chick chorioallantoic membrane (15.1)
2014
Introduction: The chick chorioallantoic membrane (CAM) is a well-established model of both vasculogenesis and angiogenesis; however, little is known about the genetic control of vascular patterning in the CAM. Methods: Using recent advances in chicken genomics, we investigated the relative expression of 84 angiogenesis genes during the growth and remodeling of the CAM microcirculatory network. Chick embryos, cultured ex ovo, were studied during embryonic development days (EDD) 8-14. UV laser microdissection was used to harvest capillary plexus and 1st, 2nd, and 3rd order conducting vessels for qRT-PCR analysis. Results: Two transcription peaks were observed between EDD 8 and 14. The first p…
Ascending Aorta Resection and End-to-End Anastomosis: Redistribution of Wall Shear Stress Induced by a Bioprosthetic Heart Valve
2020
Although aortic resection and end-to-end anastomosis are applied to repair ascending aortic aneurysm, there is a lack of information on the late risk of post-operative complications, such as aortic dissection and aneurysmal re-dilatation. It is recognized that altered hemodynamic forces exerted on an aortic wall play an important role on dissection and aneurysm formation. We present a case in which the hemodynamic forces were investigated prior and after repair of an ascending aorta treated by resection with end-to-end anastomosis and a bioprosthetic heart valve. Post-operative wall shear stress was redistributed uniformly along the vessel circumference, and this may suggest a reduced risk …
Post-operative computed tomography imaging evaluation of ascending aorta surgery
2021
Ascending thoracic aorta disease is often a life-threatening condition. Aortic aneurysm and aortic dissection are the most frequent ascending aorta diseases requiring surgical intervention. Surgical repair techniques of the ascending aorta are various; they include reconstruction of the ascending aorta by using a graft with or without a prosthetic valve, reconstruction with a composite artificial graft or using a biological graft, and reconstruction of the ascending aorta with a composite graft preserving the native valve and arch repair. The radiologist plays a key role in the identification of post-operative complications; differentiation from normal postoperative findings is fundamental.…
BRACHIAL PLEXUS: CONSIDERATIONS AFTER A CADAVERIC STUDY
2017
During the summer of 2016, a group of students from the University of Palermo attending the second year of medicine school took part in a four week course of Whole Cadaveric Dissection at the University of Malta. Within this project, we students worked on a male cadaver by using a surgical kit, taking care to record everything with pictures and videos. In this way, every structure was isolated and studied in comparison with the anatomic atlas’ pictures. The aim of this article is to show the dissection method of the brachial plexus that we used. We started removing cutis and subcutis, then we identified the muscles’ origin and insertion; after isolating vascular-nervous structures, we final…
Injection pressure mapping of intraneural vs. perineural injections: further lessons from cadaveric studies.
2018
Background The aim of the study was to investigate the difference between intraneural and perineural injection pressures in human cadavers. Targeted nerves included the cervical roots, the supraclavicular and infraclavicular brachial plexus, the sciatic-subgluteal nerve and the common peroneal and tibial nerves. Methods Ten readings were obtained for each nerve location. Over ten seconds, 1 mL of 0.9% NaCl was injected - deliberately slower than in clinical practice to eliminate the risk of aberrant readings relating to the speed of injection. Perineural injections occurred at least 1 mm outside the epineurium. After pressure recordings were completed 0.1mL of dye was injected, and dissecti…
A BRIEF GUIDE TO THE ANATOMICAL DISSECTION OF THE STOMACH
2021
The purpose of this article is to write a short guide on the macroscopic anatomy of the stomach, describing its structures, its relationships within the abdominal cavity and the dissection methods used during the internship performed by a group of students from the University of Palermo, Palermo, Italy, at the University of Malta, Msida, Malta, during the summer of 2018. Indeed,, they had the opportunity to spend a period of two weeks at the department of Anatomy in the Maltese University for studying and practining on some corpses, with the aim of improving their anatomical knowledge.
Results of Angioplasty With Double-Layer Mesh Stent and Protection Systems of the Extra- and Intracranial Dissection of Cephalic Arteries
2023
Purpose: Although a majority of cervical artery dissections can be managed conservatively, patients presenting with cerebral embolization or significant stenosis require a more aggressive approach. However, complications associated with endovascular repair are quite frequent and optimal interventional technique still remains to be established. Materials and methods: The aim of this post hoc survey was to analyze results of endovascular treatments for symptomatic dissections of the internal carotid and vertebral arteries, which were performed under protection and with the use of double-layer mesh stents. During endovascular procedure catheters, stents and protection systems were tailored acc…
A Non-Local Mode-I Cohesive Model for Ascending Thoracic Aorta Dissections (ATAD)
2018
This paper presents a non-local interface mechanical model to describe aortic dissection. In this regard, the mode-I debonding problem based on a cohesive zone modeling is endowed with non-local terms to include long-range interactions that are present in multi-layered biological tissue. Such non-local effects are related to the collagen fibers that transmit forces between non-adjacent elements. Numerical simulations are provided with different values of the non-local parameters in order to show the effect of the non-locality during the debonding processes.