scholarly journals A new classification of congenital abnormalities of UPVS: sonographic appearances, screening strategy and clinical significance

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yue Qin ◽  
Huaxuan Wen ◽  
Meiling Liang ◽  
Dandan Luo ◽  
Qing Zeng ◽  
...  
Keyword(s):  
Blood Circulation ◽  
Congenital Abnormalities ◽  
Fetal Heart ◽  
Screening Strategy ◽  
Circulation System ◽  
New Classification ◽  
Sonographic Evaluation ◽  
Blood Circulation System ◽  
Comprehensive Classification

AbstractThe umbilical–portal venous system (UPVS) plays an important role in embryonic development, as well as a significant blood circulation system to ensure the normal blood supply of fetal heart and brain and other vital organs. Congenital anomalies of UPVS contain many subtypes with a broad spectrum of manifestations and prognoses. Furthermore, because of fetal small lumen of UPVS, the sonographic evaluation remains difficult in utero. Appreciation of normal embryology and anatomy of UPVS is essential to an understanding of sonographic characteristics of anomalies of UPVS and fetal sequential changes. Through reviewing previous references and our experience with congenital abnormalities of UPVS, a new comprehensive classification is proposed. The new classification identifies three types of congenital abnormalities of UPVS based on morphological abnormalities and shunts. The embryology and etiology, sonographic, clinical and prognostic characteristics of each subtype of the new classification are described in detail. Knowledge of congenital abnormalities of UPVS can give sonographers a clue and aid prenatal sonographic diagnosis. The purpose of this article is to help the sonographers to understand the new classification of congenital abnormalities of UPVS, master the sonographic characteristics of each subtype and prenatal ultrasonographic screening strategy, and guide subsequent appropriate counseling and management.

STUDY OF THE PREVALENCE OF DENTOALVEOLAR ANOMALIES, INCLUDING DISTAL BITE IN CHILDREN AND ADOLESCENTS

Vestnik ◽  
2021 ◽  
pp. 133-137
Author(s):  
Г.Т. Ермуханова ◽  
А.О. Етекбаева
Keyword(s):  
Children And Adolescents ◽  
Blood Circulation ◽  
Circulation System ◽  
Dental Anomalies ◽  
Functional Changes ◽  
Facial Region ◽  
Blood Circulation System ◽  
Lateral Segment ◽  
Distal Occlusion ◽  
Maxillary Region

В данной статье описывается изучение распространенности зубочелюстных аномалий, в том числе и дистального прикуса среди детей и подростков школьного возраста. В настоящее время широко распространены зубочелюстные аномалии, в том числе дистальный прикус среди детей и подростков. Зубочелюстные аномалии приводят к функциональной патологии морфологических нарушений челюстной области. Изменения возрастно увеличиваются и сопровождаются деформацией лицевой области черепа наряду с эстетическими отклонениями.У больных часто наблюдаются нарушения положения позвоночника,функциональные изменения в системе малого кровообращения и задержка психосомтического развития.Это говорит о ранних нарушениях профилактики и несвоевременном оказании ортодонтической,зубопротезной и комплексной медицинской помощи.В связи с этим важную роль играет эпидемиологическая ситуация по зубной аномалии. исполняют информацию. Диагноз дистальной окклюзии называется боковым сегментом верхнего зубного ряда, расположенным перед боковым сегментом нижнего зубного ряда и появлением между ними дистальной стадии. Лечение и прогноз дистальной окклюзии зубного ряда зависит от возраста больного и характера аномалии [1] The article is devoted to the study of the prevalence of dentition anomalies, including distal occlusion among children and adolescents of school age. Currently, dental anomalies, including distal bite, are widespread among children and adolescents. Dental anomalies lead to functional pathology of morphological disorders of the maxillary region. The changes increase with age and are accompanied by deformation of the facial region of the skull along with aesthetic deviations. Patients often have disorders of the spine position, functional changes in the small blood circulation system and delayed psychosomal development.It tells about the early breaches of the prevention of and untimely provision of orthodontic, prosthodontic and comprehensive medical care.In this regard, an important role is played by the epidemiological situation of dental anomalies. execute information. The diagnosis of distal occlusion is called the lateral segment of the upper dentition, located in front of the lateral segment of the lower dentition and the appearance of the distal stage between them. Treatment and prognosis of distal occlusion of the dentition depends on the patient's age and the nature of the anomalies [1].

Influences of the Compliances and the Resistance on Pulsatile Flow Waveforms

2013 ◽  
Vol 477-478 ◽  
pp. 217-220
Author(s):  
Wen Bo He ◽  
Yuan Wang ◽  
Xiao Yan Gong
Keyword(s):  
Blood Circulation ◽  
Mean Amplitude ◽  
Circulation System ◽  
Aortic Blood Flow ◽  
Blood Circulation System ◽  
Aortic Blood ◽  
Pulsatile Pressure ◽  
The Mean ◽  
Flow Waveforms ◽  
Peak Value

A pulsatile circulation system has been built to simulate aortic blood flow. The system has both upstream and downstream compliances and resistances to simulate the elasticity and resistances of blood circulation system. Influences of the compliances and resistances on the pulsatile pressure waveforms have been systematically studied using this system. We found that in absence of the compliances and the downstream resistance, it results in an oversize negative pulsation to the pressure waveforms. The downstream resistance hardly affects the structure of the pressure waveforms, whereas the mean amplitude of pressure increases along with the downstream resistance. The compliance can reduce the peak value of the pressure, which is unrelated to the location of the compliance but related to the elasticity in the system. With fixed upstream system elasticity, the pressure waveform is more stable.

scholarly journals INVESTIGATION OF THE HEMODYNAMICS IN THE MICROVASCULATURE OF THE BLOOD CIRCULATION SYSTEM

2009 ◽  
Vol 6 (4) ◽  
pp. 73-79
Author(s):  
I. D. Voitovych ◽  
Yu. O. Brayko ◽  
V. I. Degtjaruk ◽  
R. G. Imamutdinova ◽  
Yu. D. Minov ◽  
...  
Keyword(s):  
Blood Circulation ◽  
Circulation System ◽  
Blood Circulation System

Descartes’ Man Under Construction: The Circulatory Statue of Salomon Reisel, 1680

2020 ◽  
Vol 25 (2) ◽  
pp. 101-134
Author(s):  
Mattia Mantovani
Keyword(s):  
Blood Circulation ◽  
Three Dimensional ◽  
Modern Science ◽  
Circulation System ◽  
Three Dimensional Model ◽  
Blood Circulation System ◽  
Under Construction ◽  
Circulation Of The Blood ◽  
The Brain ◽  
Scientific Academies

Abstract This paper studies the “human circulatory statues” which Salomon Reisel designed in the 1670s in order to demonstrate the circulation of the blood and its effect on the brain. It investigates how Reisel intended this project to promote Descartes’ philosophy, and how it relates to contemporary diagrammatic schematizations of the blood circulation system. It further explores Reisel’s claims concerning the epistemological and practical advantages of working with a three-dimensional model and argues that Reisel intended his statua to address the concerns of his fellow physicians and, more specifically, to help in diagnostics. I consider the background, strategy and legacy of the essays in which Reisel presented his devices, as well as their relevance to the general project of the scien­tific journal – one of the earliest – in which they appeared, the Miscellanea Curiosa. Reisel was a leading physician who acted throughout his life as a mediator between the Royal Society and the Academia Naturæ Curiosorum. His articles, the paper argues, have much to tell us much about the role played by the recently established scientific academies and their journals in shaping the transmission of early modern science and medicine, in terms both of theories and of the knowledge embodied in scientific instruments.

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