SELECTION OF SURGICAL TACTICS FOR TREATMENT OF NON-APHENIC VARICOSIS ON THE RESULTS OF US-DIAGNOSTICS OF THE VENES OF THE LOWER LIMBS

Purpose of research. Determination of variants of the anatomical structure of non-saaphenic veins and pathological anastomoses in varicose enlargement of atypical venous basins with ultrasound Doppler of the veins of the lower extremities, including as sources of pathological venous reflux, as well as the importance of insolvent veins — perforants and non-saaphenic veins — in the formation of venous insufficiency to clarify the treatment protocol. Materials and methods. The venous system was studied in 2348 pa tients, including both patients with various pathologies of the venous system, including those with varicose veins, and those in whom the pathology of the veins was not detected by Doppler ultrasound. Research results and discussion. Surgical treatment for non-safenic varicose veins includes phlebectomy, sclerotherapy and Muller-Vara di minifblektomy, depending on the diameter of the affected nonsafenic vein. Conclusions. The specialists’ understanding of the variants of nonsafenic varicose veins, as well as adherence to the full research protocol for ultrasound Doppler ultrasound of the veins, allows us to provide detailed information in order to determine the most effective treatment tactics and prevention of relapses and complications of the disease.

Classification of Doppler Ultrasound Blood Flow Signals of Lower Extremity Arteries for the Early Detection of Diabetic Foot

Peripheral arterial disease is one of the key indicators of diabetic foot, which can be easily identified by ultrasound diagnostic techniques. The work aims to detect diabetic foot in early stages by classifying the blood flow signals of lower extremity arteries being captured by ultrasound doppler methods. Samples are collected from diabetic patients with and without having probable symptoms of arterial diseases. Doppler examination has been conducted on posterior tibial artery for 354 subjects with a transducer of 8 MHz frequency. The auscultation, method of listening sounds of internal organs, is employed as medical diagnostic tool for identifying pathological conditions. Each artery in the human body has a unique profile of Doppler flow. This fixed profile may be changed with the presence of a particular disease. The received signal has a spectrum of Doppler-shifted signals with respect to the existence of a velocity profile across the vessel lumen. Changes to the shape of this profile is an indicator of the severity of disease. Various features are extracted by using various statistical and signal processing functions. The feature analysis was accomplished with machine learning algorithms. Naïve Bayes, Tree and SVM algorithms are employed with MATLAB Toolboxes. Comparing the performance of these algorithms, the Tree method is found superior than the others. So, the proposed classification methodology can be employed as a key factor for the early stage detection of diabetic foot. As diabetic foot is correlated with many other parameters which effects the pressure and flow velocity of lower extremities, an integrated disease prediction model is proposed by incorporating the ultrasound doppler technique.

Ultrasound Doppler fetal heart rate detection algorithm analyzesthe correlation between twin selective fetal growth restriction and cord blood SFass fasL level

Objective: The paper uses ultrasound Doppler fetal heart rate detection algorithm to explore the placental characteristics of monochorionic twin pregnancy with selective fetal growth restriction, and discuss the correlation between selective fetal growth restriction and cord blood SFass FasL level. Methods: From June 1, 2019 to June 1, 2020 in our hospital, 23 cases of selective fetal growth restriction and 32 cases of uncomplicated cases were included in the monochorionic twin pregnancies whose pregnancy was terminated in our hospital (control group) research. Perfusion was completed within 24 hours after delivery of the placenta. The umbilical arteries and veins of the two fetuses were respectively perfused with four different colors of pigments. The type of anastomoses was judged according to the color of the blood vessels on the placenta surface. Results: The selective fetal growth restriction group was higher than the control group. In the selective fetal growth restriction group and the control group, the number of anastomoses of the placental superficial arterial artery, arterial vein and venous vein were 1.0 and 1.0, 3.0 and 2.0, 0.0 and 0.0, respectively; the placental superficial arterial artery, arterial vein and venous vein. The total diameters of the anastomosed blood vessels were 2.7 and 2.2, 4.0 and 3.4, 0.0 and 0.0 mm, respectively; the total number of superficial placental anastomosed blood vessels in the selective fetal growth restriction group and the control group were 3.5 and 3.5, respectively.The total diameters were 6.9 and 6.9, respectively 5.9mm. Conclusion: Uneven placental share and non-central attachment of the umbilical cord may be risk factors for selective fetal growth restriction in monochorionic twin pregnancy. doi: https://doi.org/10.12669/pjms.37.6-WIT.4881 How to cite this:Cao Q, Ma C, Zhu J. Ultrasound Doppler fetal heart rate detection algorithm analyzes the correlation between twin selective fetal growth restriction and cord blood SFass fasL level. Pak J Med Sci. 2021;37(6):1672-1676. doi: https://doi.org/10.12669/pjms.37.6-WIT.4881 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.