scholarly journals War injuries of the blood vessels of the extremities

2002 ◽  
Vol 59 (2) ◽  
pp. 153-156
Author(s):  
Svetozar Radulovic ◽  
Branko Despot ◽  
Vladimir Papic ◽  
Branislava Pusac ◽  
Nebojsa Trkulja
Keyword(s):  
Blood Vessels ◽  
Soft Tissues ◽  
Graft Infection ◽  
Anatomic Reconstruction ◽  
Reconstructive Procedures ◽  
War Injuries ◽  
Total Percentage ◽  
Wound Contamination ◽  
Combat Injuries ◽  
High Level

Treatment results of 200 injured with the lesions of 282 magisterial blood vessels were analyzed. All were combat injuries, and the majority was caused by the fragments of explosive device. The mechanism of such the injuries produced large defects of soft tissues as well as the high level of the wound contamination, which aggravated reconstructive procedures and increased the risk of infection. In the majority of cases anatomic reconstruction of the artery was performed, and the ligature was used only in the case of graft infection and in the injuries of one artery of the lower leg or the forearm. The majority of injuries was solved by lateral suture or patch plastic, since postoperative constriction caused by those methods did not cause greater hemodynamic disorders due to the size of venous lumen. The duration of ischemic interval was of the utmost importance for the favorable final result of the treatment, as well as the adequate debridement of the wound, good soft-tissue cover of the reconstructed blood vessel and precise a traumatic technique. Total percentage of amputations was 14.5%, and all were involving the lower extremities, and were mostly caused by popliteal artery lesion.

scholarly journals Photodynamic Therapy Combined with Antibiotics or Antifungals against Microorganisms That Cause Skin and Soft Tissue Infections: A Planktonic and Biofilm Approach to Overcome Resistances

2021 ◽  
Vol 14 (7) ◽  
pp. 603
Author(s):  
Vanesa Pérez-Laguna ◽  
Isabel García-Luque ◽  
Sofía Ballesta ◽  
Antonio Rezusta ◽  
Yolanda Gilaberte
Keyword(s):  
Photodynamic Therapy ◽  
Soft Tissues ◽  
Combined Treatment ◽  
Resistance Pattern ◽  
Antimicrobial Photodynamic Therapy ◽  
Antimicrobial Drugs ◽  
Bacteria And Fungi ◽  
High Level ◽  
Selection Of

The present review covers combination approaches of antimicrobial photodynamic therapy (aPDT) plus antibiotics or antifungals to attack bacteria and fungi in vitro (both planktonic and biofilm forms) focused on those microorganisms that cause infections in skin and soft tissues. The combination can prevent failure in the fight against these microorganisms: antimicrobial drugs can increase the susceptibility of microorganisms to aPDT and prevent the possibility of regrowth of those that were not inactivated during the irradiation; meanwhile, aPDT is effective regardless of the resistance pattern of the strain and their use does not contribute to the selection of antimicrobial resistance. Additive or synergistic antimicrobial effects in vitro are evaluated and the best combinations are presented. The use of combined treatment of aPDT with antimicrobials could help overcome the difficulty of fighting high level of resistance microorganisms and, as it is a multi-target approach, it could make the selection of resistant microorganisms more difficult.

scholarly journals Automatic Diabetic Retinopathy Diagnosis using Prewitt Edge Detection & Color Mapping from Fundus Imaging

2021 ◽  
Vol 10 (4) ◽  
pp. 19-23
Author(s):  
Megha Deshmukh ◽  
Vineeta Saxena Nigam
Keyword(s):  
Diabetic Retinopathy ◽  
Edge Detection ◽  
Blood Vessels ◽  
Rate System ◽  
Color Mapping ◽  
Fundus Imaging ◽  
Long Time ◽  
Mapping Techniques ◽  
High Level ◽  
Prewitt Edge Detection

Diabetic Retinopathy is a diabetic disease that directly affects the vision that causes damaged blood vessels at the back end of the eyes. It a complicated disease that cannot be recognized from normal eyes; a fundus imaging can reflect the impairments over the retina that causes partial or complete blindness that cannot be cured. It is mandatory for a routine examination that may lead to prevent from complete blindness because it can be prevented from current damaged blood vessels but it cannot be revert or treated. In the field of image processing; various diseases can be diagnosed automatically that saves humans life along with easiness for medical professionals. If a person pertains diabetes for a long time may have highest possibility for diabetic retinopathy. Here, the system has been proposed that can diagnose this disease with high level of accuracy with minimal false alarm rate. System uses Prewitt Edge Detection and Color Mapping techniques for recognizing diabetic retinopathy symptoms or damaged blood vessels from fundus imaging. Prewitt is highly sensitive for extracting impairments along with blood vessels and system is able to mask the unwanted area by using color correction tool.

scholarly journals Efficient finite element hyperelasticity solver for blood vessel simulations

2020 ◽  
Vol 14 ◽  
pp. 174830262093101
Author(s):  
Xinhong Wang ◽  
Zhengzheng Yan ◽  
Yi Jiang ◽  
Rongliang Chen
Keyword(s):  
Finite Element ◽  
Blood Vessel ◽  
Blood Vessels ◽  
High Performance ◽  
Soft Tissues ◽  
Circulatory System ◽  
Numerical Algorithms ◽  
External Pressure ◽  
Patient Specific ◽  
Schwarz Method

The blood vessels play a key role in the human circulatory system. As a tremendous amount of efforts have been devoted to develop mathematical models for investigating the elastic behaviors of human blood vessels, high performance numerical algorithms aiming at solving these models have attracted attention. In this work, we present an efficient finite element solver for an elastodynamic model which is commonly used for simulating soft tissues under external pressure loadings. In particular, the elastic material is assumed to satisfy the Saint–Venant–Kirchhoff law, the governing equation is spatially discretized by a finite element method, and a fully implicit backward difference method is used for the temporal discretization. The resulting nonlinear system is then solved by a Newton–Krylov–Schwarz method. It is the first time to apply the Newton–Krylov–Schwarz method to the Saint–Venant–Kirchhoff model for a patient-specific blood vessel. Numerical tests verify the efficiency of the proposed method and demonstrate its capability for bioengineering applications.

Extremity War Injuries VIII: Sequelae of Combat Injuries

2014 ◽  
Vol 22 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Romney C. Andersen ◽  
Jean-Claude G. D’Alleyrand ◽  
Marc F. Swiontkowski ◽  
James R. Ficke
Keyword(s):  
War Injuries ◽  
Combat Injuries

Lightning Injury of the Tympanic Membrane

1993 ◽  
Vol 102 (11) ◽  
pp. 867-869 ◽  
Author(s):  
Miriam I. Redleaf ◽  
Brian F. McCabe
Keyword(s):  
Tympanic Membrane ◽  
Blood Vessels ◽  
External Auditory Canal ◽  
Soft Tissues ◽  
Central Area ◽  
Mechanism Of Injury ◽  
Review Of The Literature ◽  
Lightning Strikes ◽  
Lightning Injury

A number of cases of otologic injuries by lightning strikes have been described in the otolaryngological literature. The mechanism of these injuries remains uncertain. We report 3 cases of lightning injury that presented to us. Analysis of these cases suggests that the mechanism of injury is direct conduction of electricity from the scalp to the soft tissues of the external auditory canal to the tympanic membrane. The conduits of the electrical surge are the subcutaneous blood vessels, smaller vessels being damaged more than larger vessels. Since the tympanic membrane central vessels are smaller than the canal vessels, the central area of the tympanic membrane would be most vulnerable, and this is seen clinically. A review of the literature supports this proposed mechanism of injury.

scholarly journals Single-Tooth Morse Taper Connection Implant Placed in Grafted Site of the Anterior Maxilla: Clinical and Radiographic Evaluation

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Francesco Guido Mangano ◽  
Piero Zecca ◽  
Fabrizia Luongo ◽  
Giovanna Iezzi ◽  
Carlo Mangano
Keyword(s):  
Bone Resorption ◽  
Tooth Extraction ◽  
Soft Tissues ◽  
Radiographic Evaluation ◽  
Reconstruction Technique ◽  
Anterior Maxilla ◽  
Reconstructive Procedures ◽  
Aesthetic Result ◽  
Implant Placement ◽  
Barrier Membrane

The aim of this study was to achieve aesthetically pleasing soft tissue contours in a severely compromised tooth in the anterior region of the maxilla. For a right-maxillary central incisor with localized advanced chronic periodontitis a tooth extraction followed by reconstructive procedures and delayed implant placement was proposed and accepted by the patient. Guided bone regeneration (GBR) technique was employed, with a biphasic calcium-phosphate (BCP) block graft placed in the extraction socket in conjunction with granules of the same material and a resorbable barrier membrane. After 6 months of healing, an implant was installed. The acrylic provisional restoration remained in situ for 3 months and then was substituted with the definitive crown. This ridge reconstruction technique enabled preserving both hard and soft tissues and counteracting vertical and horizontal bone resorption after tooth extraction and allowed for an ideal three-dimensional implant placement. Localized severe alveolar bone resorption of the anterior maxilla associated with chronic periodontal disease can be successfully treated by means of ridge reconstruction with GBR and delayed implant insertion; the placement of an early-loaded, Morse taper connection implant in the grafted site was effective to create an excellent clinical aesthetic result and to maintain it along time.

scholarly journals Anatomic and surgical features of lower extremities blood vessels in case of major veins dysplasia in children with various type and severity of the disease according to data of contrast flebography

2020 ◽  
Vol 11 (2) ◽  
pp. 25-32
Author(s):  
Mikhail V. Azarov ◽  
Dmitry D. Kupatadze ◽  
Viktor V. Nabokov ◽  
Suren M. Kocharyan
Keyword(s):  
Blood Vessels ◽  
Soft Tissues ◽  
Vascular Malformations ◽  
Low Cost ◽  
Lower Extremities ◽  
Surgical Anatomy ◽  
Long Term Results ◽  
Severity Of The Disease ◽  
Medical University

Dysplasia of the main veins (DMV) is known by the names of the authors who described this pathology as Klippel Trenone syndrome. The clinical picture of Klippel Trenone syndrome (CTS) in the classical version is characterized by a triad of symptoms: vascular spots, varicose atypical veins, hypertrophy of soft tissues and bones with an increase in the volume and length of the affected limb. The incidence of this defect from all vascular malformations is 49.6%. To diagnose a malformation, ultrasound is used Dopplerography, MRI and MSCT with contrast, ascending venography. Vasocontrast methods reveal various options for surgical anatomy of the veins of the affected limbs. To assess the anatomy of deep veins, we used upward contrasting, since we consider this species to be more accurate and low-cost. The study is based on the results of examination and treatment of 200 patients. Long-term results were analyzed in 108 patients with congenital malformations of the vessels of the lower extremities aged 1 year to 18 years, who were in the angiomicrosurgical department of the Pediatric Medical University from 2005 to 2015. Patients were divided into 2 groups: the embryonic type 70 people (of which 42 boys and 28 girls), and the fetal type 38 people (16 of them boys, 22 girls). In this paper, we analyze the results of ascending phlebography of the extremities, which is considered the gold standard for examining vein malformations. Contrast phlebography in 108 patients with dysplasia of the main veins, hypo- and dysplasia of segments of the deep and superficial veins were detected 63%; atypical location of superficial or deep veins with the presence of congenital pathways of the collateral outflow 30%, aplasia of the veins 7%. Conclusions: phlebography data accurately determine the surgical anatomy of blood vessels in patients with dysplasia of the main veins. The data obtained during the ascending phlebography, in almost 100% of cases coincide with intraoperative data thus allowing the development of optimal tactics of operations in the veins, and also scrutinize the pathology of musculoskeletal system.

scholarly journals The Role of Antegrade Ureterolithotripsy in the Treatment of Large Impacted Proximal Ureteral Stones

Health of Man ◽  
2021 ◽  
pp. 93-98
Author(s):  
Vladyslav Ozhogin
Keyword(s):  
Ureteral Stones ◽  
Total Percentage ◽  
Antegrade Approach ◽  
Group I ◽  
The Status ◽  
Proximal Ureter ◽  
Group Ii ◽  
High Level ◽  
Jj Stent

The objective: optimization of approaches to the choice of endoscopic ureterolithorpsy method in the presence of large stones of the proximal ureter. Materials and methods. For the period 2017–2020 y. the study included 136 patients with large stones of the proximal ureter, who were performed one of two methods of ureterolithotripsy: rULT (group I) or m-aULT (group II). In group I 73 (53,7%) patients were operated, in group II – 63 (46,3%) patients. The age of patients ranged from 18 to 81 years, the average age was 52,7 years (54±10,5). The age of patients in group II ranged from 25 to 77 (63±10,5) years; the size of a concrement from 10 to 20 (14±3,5 mm). In group I, the age of patients ranged from 18 to 91 (63,5±10 years); the size of a concrement from 7 to 20 (12±5,5 mm). Results. The average time of m-AULT was 58,5±15,4 min, while the status of stone free was achieved in all 100% of patients. The operation ended with the installation of nephrostomy drainage in 11 (17,5%) cases, nephrostomy drainage and internal ureteral JJ-stent – in 33 (52,4%), in 19 (30,2%) cases – tubeless drainage method with the installation of ureteral stent. And the total percentage of stenting in staghorn stones of the proximal ureter, after lithotripsy and litholapaxy was 82,6% (52 patients). RULT surgery in 92% (67 patients) of cases ended with drainage of the kidney by JJ-stent, in 6 (8%) patients the operation ended without drainage. Conclusions. Analyzing the results, it was noted that the antegrade approach is a safe and effective method of treatment for proximal ureterolithiasis in the group with large stones of the proximal ureter, where the effectiveness of RULT (SFR up to 86,3±3,9%) is significantly inferior to AULT, and minimizing the size of instruments m-aULT) reduces the number and degree of complications associated with the size of the coiled tract, while providing a high level of SFR (96,8±4,4%).

scholarly journals Quantitative Assessment of 3D Printed Blood Vessels Produced with J750™ Digital Anatomy™ for Suture Simulation

2022 ◽  
Author(s):  
Stefania Marconi ◽  
Valeria Mauri ◽  
Erika Negrello ◽  
Luigi Pugliese ◽  
Andrea Pietrabissa ◽  
...  
Keyword(s):  
Blood Vessels ◽  
Soft Tissues ◽  
Surgical Simulation ◽  
Patient Specific ◽  
Morphological Aspects ◽  
Pathological Conditions ◽  
Surgical Simulations ◽  
Training Of Surgeons ◽  
3D Printed ◽  
Digital Anatomy

Blood vessels anastomosis is one of the most challenging and delicate tasks to learn in many surgical specialties, especially for vascular and abdominal surgeons. Such a critical skill implies a learning curve that goes beyond technical execution. The surgeon needs to gain proficiency in adapting gestures and the amount of force expressed according to the type of tissue he/she is dealing with. In this context, surgical simulation is gaining a pivotal role in the training of surgeons, but currently available simulators can provide only standard or simplified anatomies, without the chance of presenting specific pathological conditions and rare cases. 3D printing technology, allowing the manufacturing of extremely complex geometries, find a perfect application in the production of realistic replica of patient-specific anatomies. According to available technologies and materials, morphological aspects can be easily handled, while the reproduction of tissues mechanical properties still poses major problems, especially when dealing with soft tissues. The present work focuses on blood vessels, with the aim of identifying – by means of both qualitative and quantitative tests – materials combinations able to best mimic the behavior of the biological tissue during anastomoses, by means of J750™ Digital Anatomy™ technology and commercial photopolymers from Stratasys. Puncture tests and stitch traction tests are used to quantify the performance of the various formulations. Surgical simulations involving anastomoses are performed on selected clinical cases by surgeons to validate the results. A total of 37 experimental materials were tested and 2 formulations were identified as the most promising solutions to be used for anastomoses simulation. Clinical applicative tests, specifically selected to challenge the new materials, raised additional issues on the performance of the materials to be considered for future developments.

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