scholarly journals Ways of Improvement of Safety and Efficiency of Endovenous Laser Coagulation in Treatment of Lower Limb Varicose Vein Disease

2016 ◽  
Vol 23 (3) ◽  
Author(s):  
Roman Kohan ◽  
Volodymyr Goshchynsky
Keyword(s):  
Mathematical Model ◽  
Laser Radiation ◽  
Varicose Vein ◽  
Lower Limb ◽  
Linear Density ◽  
Varicose Veins ◽  
Laser Coagulation ◽  
Light Pipe ◽  
The Mathematical Model ◽  
Vein Disease

Nowadays endovenous laser coagulation is the priority method of treatment of lower limb varicose vein disease. However, there are a number of specific complications that reduce efficiency of its usage.The objective of the research was to decrease specific postoperative complications after endovenous laser coagulation due to the introduction of its mathematical design.Materials and methods. The study included 168 patients with lower limb varicose vein disease. Prior to surgery the mathematical calculation of the basic parameters of laser coagulation such as density of laser irradiation and rate of reverse movement of the light pipe depending on the diameter of varicose veins was made. The control group consisted of 146 patients with varicose vein disease; the aforementioned parameters were established according to the instruction of using a laser device.Results.  The analysis of complications such as induration of skin over coagulase great or small saphenous vein, phlebitis in the projection of the great or small saphenous vein, ecchymosis or dermatomelasma in the early postoperative period, pain syndrome showed the reduction in the number of complications while applying the mathematical model of calculation of linear density of laser radiation and the speed of reverse traction of the light pipe with its transfer to the graphic image.Conclusions.  The application of the mathematical model of calculation of linear density of laser radiation and the speed of reverse traction of the light pipe with its transfer to the graphic image allows us to improve the results of endovenous laser coagulation for varicose veins due to the reduction in specific complications.

scholarly journals A perioperative phlebotropic therapy compliance study in patients with varicose veins

2020 ◽  
pp. 81-88
Author(s):  
S. N. Zhabin ◽  
A. A. Shitikov ◽  
A. V. Tsukanov ◽  
E. G. Obedkov ◽  
S. S. Dudchenko ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Lower Extremity ◽  
Varicose Vein ◽  
Conservative Therapy ◽  
Varicose Veins ◽  
Laser Coagulation ◽  
Entire Study ◽  
Wide Range ◽  
Vein Disease

Introduction: Lower extremity varicose vein disease is one of the common problems in vascular surgery. Clinically, this disease is accompanied by a wide range of complaints and external symptoms, which eventually lead to a worse patients’ quality of life. The integrated approach is being applied to the disease treatment, which involves the use of various phlebotropic drugs as conservative therapy along with minimally invasive surgical correction and sclerotherapy.Objective: to improve the quality of phlebotropic therapy for patients with lower extremity varicose vein disease, based on the study of factors that shape the patient’s compliance with the effective treatment of clinical symptoms. The term «compliance» means the precise and informed implementation of the doctor’s recommendations during the treatment by the patient. Most often, «compliance» is assessed by the drug use index, which is the quotient of dividing the number of days on which the full dose of the drug was taken by the duration of the entire study period. Materials and methods: The analysis of 368 + 111 patients with lower extremity varicose vein disease was carried out. Of these, 111 patients turned out to be beyond the correct study of compliance (a phlebectomy was performed in a hospital). 368 patients were divided into the following groups: Group 1: the patients, who were assigned modern surgical treatment of varicose veins (endovenous laser coagulation, scleroobliteration); Group 2: the patients, who withdrew from assigned interventions. As it turned out, the different groups of patients differed in compliance.Results. The patients who were shown and performed surgical treatment – 320 (86.9%), can be considered highly compliant with the prescribed conservative therapy – the average value of the compliance index is 0.83, compared to the representatives who refused to perform the recommended surgical procedures recommended by them – 48 (13.1%), the compliance index is 0.78.In the course of the investigation, the factors shaping compliance with phlebotropic drugs were identified, a comparative assessment was carried out on the main indicators of the effectiveness of phlebotropic drugs.Conclusion. Thus, the compliance of the patients suffering from LEVVV during the treatment with phlebotropic drugs varies depending on the multiplicity and convenience of the form of the drug, on the effectiveness of the proposed phlebotropic therapy according to the influence on the complaints and symptoms, on the psychological readiness of the patient to entrust the result of the final treatment of the disease to the surgeon.

MATHEMATICAL MODEL AND EXPERIMENTAL ESTIMATION OF THERMAL PROCESSES IN HEATING MODULE AS A PART OF STEAM ABLATION DEVICE FOR VARICOSE VEINS TREATMENT

2021 ◽  
pp. 117-125
Author(s):  
Дина Владимировна Кривоносова ◽  
Евгений Сергеевич Ермолаев
Keyword(s):  
Mathematical Model ◽  
Varicose Veins ◽  
Thermal Power ◽  
Thermal Characteristics ◽  
Steam Injection ◽  
Heating Element ◽  
Vein Wall ◽  
Tissue Heating ◽  
Comparison Of The Results ◽  
The Mathematical Model

На сегодняшний день в России для лечения варикозного расширения вен часто проводятся малоинвазивные операции методами радиочастотной или лазерной облитерации, при этом метод паровой облитерации при лечении варикозной болезни не применяется совсем. Однако метод паровой облитерации обладает существенными преимуществами: малый объём и биоинертность рабочей среды - водяного пара, его невысокая температура - 120 °С, исключающая вероятность образования нагара и перфорации венозной стенки. Целью данной работы является разработка математической модели для расчёта тепловых характеристик блока нагревания, входящего в устройство для лечения варикозной болезни методом паровой облитерации. Модель описывает теплообменные процессы в гидравлической трубке блока нагревания и может быть полезна при расчёте размеров нагревательного элемента, обеспечивающих нагрев и парообразование определённой порции воды. С целью верификации математической модели результаты моделирования были сопоставлены с экспериментальными данными. Была проведена серия экспериментов, в ходе которых были получены значения энергии, содержащейся в одной инжекции пара, и объём воды в одной инжекции, а также оценена фактическая тепловая мощность нагревателя. Сравнение результатов имитационного моделирования и значения фактической тепловой мощности пара, полученной экспериментальным путем, показала работоспособность математической модели. Разработанная математическая модель позволяет подбирать геометрические параметры нагревательного элемента в зависимости от требуемой тепловой мощности, которая должна быть обеспечена блоком нагревания, а также варьировать параметры нагревательного элемента для разной степени нагрева тканей Today in Russia minimally invasive varicose veins treatment is often performed using radiofrequency or laser ablation, while the method of steam ablation is not used at all. However, the steam ablation method has significant advantages: a small volume and biological inertness of the working substance - sterile water vapor, its low temperature - 120 °C, excluding the carbon deposits and perforation of the vein wall. The purpose of this work is to develop a mathematical model for calculating the thermal characteristics of the heating module as a part of the device for varicose veins treatment using steam ablation. The model describes heat exchange processes in the hydraulic circuit of the heating module and can be applied to calculate the dimensions of the heating module which provides heating and vaporization of a certain portion of water. In order to verify the mathematical model, the simulation results were compared with experimental data. A series of experiments were carried out in which the energy contained in one steam injection and the volume of water in one injection were estimated, as well as the actual thermal power of the heating module. Comparison of the results of simulation and the value of the actual thermal power of steam obtained experimentally showed the efficiency of the mathematical model. The proposed mathematical model allows to select the geometric parameters of the heating element depending on the required thermal power, which must be provided by the heating module, and also to vary the parameters of the heating element for different degrees of tissue heating

scholarly journals Numerical simulation of changes in the electric properties of biological tissues under local heating by laser radiation

2021 ◽  
Vol 2090 (1) ◽  
pp. 012049
Author(s):  
N V Kovalenko ◽  
A V Smirnov ◽  
O A Ryabushkin
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Laser Radiation ◽  
Optical Radiation ◽  
Local Heating ◽  
Biological Tissues ◽  
Electric Properties ◽  
Reliable Tool ◽  
The Mathematical Model

Abstract The mathematical model that describes the local heating of biological tissues by optical radiation is introduced. Changes of the electric properties of biological tissues in such process can be used as a reliable tool for analyzing heating and damage degrees of tissues.

scholarly journals The role of transillumination phleboscopy in the planning of cosmetic operations for varicose veins

2009 ◽  
Vol 8 (4) ◽  
pp. 313-317
Author(s):  
Ricardo C. Rocha Moreira ◽  
Márcio Miyamotto ◽  
Ramzi Abdallah El-Hosni Jr. ◽  
Barbara D’Agnoluzzo Moreira
Keyword(s):  
Varicose Vein ◽  
Lower Limb ◽  
Varicose Veins ◽  
Careful Planning ◽  
Operations Planning ◽  
Cosmetic Results ◽  
Essential Step ◽  
Main Activity ◽  
Reticular Veins

Background: The cosmetic treatment of varicose veins is the main activity of most vascular surgeons in Brazil. In order to obtain satisfactory cosmetic results, careful planning of varicose vein operations is necessary. Objective: Marking (or "mapping") the varicose veins with indelible ink is an essential step in planning cosmetic surgeries for lower limb varicose veins. In the present study, the role of transcutaneous phleboscopy (TcPh) in planning varicose vein operations is evaluated. Methods: A series of 100 consecutive patients, all female, were evaluated with TcPH as part of their varicose vein operations planning. A total of 171 limbs with varicose veins (71 bilateral and 29 unilateral) were evaluated. The process of marking the varicose veins followed the same protocol in all cases. Firstly, the varicose veins were marked by inspection and palpation, with the patient standing, using an indelible black ink pen. Secondly, with the patients resting in supine and prone positions, the varicose veins detected with TcPh were marked again with red or blue ink. The marks made by the two methods were then compared. Results: In 41 patients, for a total of 80 limbs (46.8%), the marks were altered after use of TcPh. Reasons for such changes were: 1) identification of other varicose veins; 2) identification of reticular veins draining complex telangiectasias; and 3) changes in the position of the marks placed with the patient standing. Conclusions: TcPh has altered the planning of varicose vein surgeries in 46.8% of all limbs evaluated, especially when the patients had complex telangiectasias, associated with reticular varicose veins.

scholarly journals Selection of Treatment Techniques for Lower Extremity Varicose Vein Disease

2016 ◽  
Vol 23 (3) ◽  
Author(s):  
Vasyl Mykhailovych Krysa ◽  
Bohdan Vasylovych Krysa
Keyword(s):  
Varicose Vein ◽  
Medical Center ◽  
Laser Coagulation ◽  
Treatment Technique ◽  
Treatment Techniques ◽  
Clinical Observations ◽  
Vascular Ultrasonography ◽  
Rehabilitation Period ◽  
Short Time ◽  
Vein Disease

The article deals with available literature analysis, as well as authors’ own clinical observations concerning treatment of varicose vein disease. The article presents traditional surgery and endovascular methods of treatment and emphasizes that no technique has been recognized as universally applicable. The issue of reducing postoperative trauma, as well as shortening hospitalization and rehabilitation periods remains topical. Vein removal or any other way of excluding it from blood circulation has to be aimed only at areas with abnormalities in the area with venous reflux confirmed by ultrasonography. Such approach enables preserving autograft, indispensable in cardiovascular surgery. Nowadays, classical combined phlebectomy is replaced by endovascular techniques. The reason is that it is less traumatic, has a good aesthetic effect and a shorter rehabilitation period. Laser coagulation proves to become a priority trend in treating varicose vein disease, as an instrument of so-called “office surgery” when patients can leave the medical center on their own and proceed with their usual activities in a short time. All known treatment techniques should not be considered as rivals. Combination of various treatment techniques with consideration to their peculiarities makes it possible to achieve better clinic results than when aiming at a single technique. The main criterion to choose a treatment technique is preoperative vascular ultrasonography, which determines anatomic and morphological peculiarities of varicose vein disease, special features of hemodynamic disorders and helps select an optimal treatment option.

scholarly journals Lower Limb Varicose Veins's Clinical Profile and Management

2020 ◽  
pp. 1-5
Author(s):  
C. Z. Perdeshi ◽  
Kustub A. Kulkani ◽  
Revendra N. Yadav ◽  
Mayur Nagwakar ◽  
Niten H. Patil
Keyword(s):  
Varicose Vein ◽  
Lower Limb ◽  
Varicose Veins ◽  
Clinical Manifestations ◽  
Clinical Profile ◽  
Lower Limbs ◽  
Study Results ◽  
Common Technique ◽  
Age Range ◽  
Made In

The lower limbs’ venous system has the pressure of posture, and blood has to be pushed against gravity into the heart cavity. This issue is generally approached either by a cautious approach or by surgical interference, all of which are constrained. Attempts to study different clinical manifestations of varicose veins are being made in the present study. The overall number of 50 varicose vein patients was analysed and the study results were reported. Varicosity veins of the lower limb is a fairly normal pathological entity. In the 20-50 age range, the condition is more common. The main modality of the procedure is surgery. The most common technique performed is Saphenofemoral flush ligation with stripping. 

scholarly journals Surgical Outcomes of Varicose Veins at Universal College of Medical Sciences, Bhairahawa, Nepal

2018 ◽  
Vol 4 (2) ◽  
pp. 14-16
Author(s):  
Santosh Shah ◽  
Sumod Koirala ◽  
Saroj Pradhan ◽  
Ashok Pradhan
Keyword(s):  
Surgical Treatment ◽  
Varicose Vein ◽  
Lower Limb ◽  
Surgical Outcomes ◽  
Varicose Veins ◽  
Medical Sciences ◽  
Operative Complications ◽  
Short Saphenous Vein ◽  
One Year ◽  
Post Operative Complications

INTRODUCTION: This study was conducted to analyse the surgical outcomes of varicose vein at Universal College of Medical Sciences (UCMS), Bhairahawa. MATERIALS AND METHODS: A hospital based prospective study done at UCMS, Bhairahwa, Nepal over the period of one year, where all the patients who had lower limb varicose vein underwent surgery were analyzed. RESULTS: A total of 25 cases of varicose vein were operated at UCMS from August 2015 to July 2016. The post-operative complications like pain, wound abscess, aching, itching were minimal.  CONCLUSION: Surgical treatment by SFJ ligation with stripping long and short saphenous vein is an established effective treatment of varicose vein in our center with minimal post-operative complications. Journal of Universal College of Medical Sciences (2016) Vol.04 No.02 Issue 14, page: 14-16  

Varicose veins: A critical review of the definition and the therapeutical options

VASA ◽  
2011 ◽  
Vol 40 (5) ◽  
pp. 344-358 ◽  
Author(s):  
Jeanneret ◽  
Karatolios
Keyword(s):  
Varicose Vein ◽  
Varicose Veins ◽  
Treatment Modalities ◽  
Therapeutic Approaches ◽  
New Techniques ◽  
Definition Of ◽  
Vein Disease ◽  
Therapeutical Options ◽  
Long Term Studies

This review intends to give an overview of the present therapeutic options for varicose vein disease. The definition of varicose vein disease and its recurrence are made and discussed with new aspects including duplexsonography assessment. All therapeutic approaches have developed and refined their treatment modalities, the open surgical as well as the endovenous techniques. In particular the “new” endovenous techniques are described with regard to safety and outcome, the published literature in this respect is summarized. The studies comparing the different techniques are listed, the prospective long term studies comparing the new techniques with the so called gold standard (open surgery) shall decide on the fate of the different techniques.

Differentially Expressed Genes in Lower Limb Varicose Vein Disease

Flebologiia ◽  
2020 ◽  
Vol 14 (2) ◽  
pp. 122
Author(s):  
M.A. Smetanina ◽  
F.A. Sipin ◽  
E.I. Seliverstov ◽  
I.A. Zolotukhin ◽  
M.L. Filipenko
Keyword(s):  
Differentially Expressed Genes ◽  
Varicose Vein ◽  
Lower Limb ◽  
Differentially Expressed ◽  
Vein Disease
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