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1.
Zhonghua Wei Chang Wai Ke Za Zhi ; 22(12): 1118-1123, 2019 Dec 25.
Artigo em Chinês | MEDLINE | ID: mdl-31874526

RESUMO

As the rapid development of minimally invasive techniques, anesthesia, and enhanced recovery after surgery (ERAS), anorectal day surgery receiving more and more attention by improving efficiency of medical care while reducing cost and hospitalized infection. However, day surgery also faces the challenge of completing the whole process from patient admission to discharge within 24 hours. Therefore, establishing a reasonable and detailed day surgery process is the cornerstone to guarantee safe medical practice and patients satisfaction. National Clinical Research Center for Geriatric Disorders (Xiangya), together with China Ambulatory Surgery Alliance formulates the clinical practice guideline for anorectal day surgery 2019 edition. Here we make some interpretations of the guidelines on the detailed process of anorectal day surgery, including indication, preoperative examination, preoperative risk evaluation, health education, assessment of day surgery anesthesia and before leaving postanesthesia care unit (PACU), postoperative management, assessment of discharge and follow-up, for the convenience of various medical centers.


Assuntos
Procedimentos Cirúrgicos Ambulatórios/normas , Assistência ao Paciente/normas , Guias de Prática Clínica como Assunto/normas , Protectomia/normas , Idoso , Canal Anal/cirurgia , Humanos , Reto/cirurgia
2.
Br J Radiol ; 82(984): 1027-32, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19366736

RESUMO

The objective of this study was to assess the radiation exposure levels in victims of a (60)Co radiation accident using chromosome aberration analysis and the micronucleus assay. Peripheral blood samples were collected from three victims exposed to (60)Co 10 days after the accident and were used for the chromosome aberration and micronucleus assays. After in vitro culture of the lymphocytes, the frequencies of dicentric chromosomes and rings (dic+r) and the numbers of cytokinesis blocking micronuclei (CBMN) in the first mitotic division were determined and used to estimate radiation dosimetry. The Poisson distribution of the frequency of dic+r in lymphocytes was used to assess the uniformity of the exposure to (60)Co radiation. Based on the frequency of dic+r in lymphocytes, estimates of radiation exposure of the three victims were 5.61 Gy (A), 2.48 Gy (B) and 2.68 Gy (C). The values were estimated based on the frequencies of CBMN, which were 5.45 Gy (A), 2.78 Gy (B) and 2.84 Gy (C). The estimated radiation dosimetry demonstrated a critical role in estimating the radiation dose and facilitating an accurate clinical diagnosis. Furthermore, the frequencies of dir+r in victims A and B deviated significantly from a normal Poisson distribution. Chromosome aberration analysis offers a reliable means for estimating biological exposure to radiation. In the present study, the micronucleus assay demonstrated a high correlation with the chromosome aberration analysis in determining the radiation dosimetry 10 days after radiation exposure.


Assuntos
Síndrome Aguda da Radiação/etiologia , Aberrações Cromossômicas , Radioisótopos de Cobalto/efeitos adversos , Raios gama/efeitos adversos , Liberação Nociva de Radioativos , Adulto , Criança , Exposição Ambiental/efeitos adversos , Exposição Ambiental/análise , Feminino , Humanos , Masculino , Testes para Micronúcleos , Doses de Radiação , Radiometria/métodos
3.
Eur J Intern Med ; 18(6): 453-5, 2007 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17822655

RESUMO

Many physicians are unaware of the power of the internet. In an era of an empowered public and patients, the internet may be a more powerful determinant of health-seeking behaviour than medical opinion. In the same way, it may provide more information for self-harm than was ever available to the public domain in the past. The internet is effective across cultural and geographical boundaries. In addition to reporting and romanticising suicide, it has a significant impact in assisting and promoting suicide. It provides services and information ranging from general information to online orders of prescription drugs or other poisons that bypass government regulations and custom controls. This bridges the gaps of locality and accessibility, which previously formed a natural divide in selecting the means of suicide. In addition to these negative effects, there is a vast potential to harness these properties to a beneficial effect. The wide acceptance of the internet makes it a powerful tool for recognition of the at-risk individual, for preventing suicide and supporting survivors, with chat rooms taking the place of telephone help lines. In an information age, it is vital for physicians to use all available means of informing and empowering the public and patients. The internet also has a role in training, providing accessible self-help sites for suicidal persons and web-based prevention services, all of which remain sadly under-utilised. The challenge to physicians of the 21st century is to harvest the internet in a beneficial manner.

4.
Artigo em Inglês | MEDLINE | ID: mdl-18244770

RESUMO

This paper presents an improved neural computation where scheme for kinematic control of redundant manipulators based on infinity-norm joint velocity minimization. Compared with a previous neural network approach to minimum infinity-non kinematic control, the present approach is less complex in terms of cost of architecture. The recurrent neural network explicitly minimizes the maximum component of the joint velocity vector while tracking a desired end-effector trajectory. The end-effector velocity vector for a given task is fed into the neural network from its input and the minimum infinity-norm joint velocity vector is generated at its output instantaneously. Analytical results are given to substantiate the asymptotic stability of the recurrent neural network. The simulation results of a four-degree-of-freedom planar robot arm and a seven-degree-of-freedom industrial robot are presented to show the proposed neural network can effectively compute the minimum infinity-norm solution to redundant manipulators.

5.
Int J Neural Syst ; 10(4): 261-5, 2000 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11052413

RESUMO

A discrete-time recurrent neural network which is called the discrete-time Lagrangian network is proposed in this letter for solving convex quadratic programs. It is developed based on the classical Lagrange optimization method and solves quadratic programs without using any penalty parameter. The condition for the neural network to globally converge to the optimal solution of the quadratic program is given. Simulation results are presented to illustrate its performance.


Assuntos
Matemática , Software
6.
Artigo em Inglês | MEDLINE | ID: mdl-18244734

RESUMO

This paper presents two neural network approaches to real-time joint torque optimization for kinematically redundant manipulators. Two recurrent neural networks are proposed for determining the minimum driving joint torques of redundant manipulators for the eases without and with taking the joint torque limits into consideration, respectively. The first neural network is called the Lagrangian network and the second one is called the primal-dual network. In both neural-network-based computation schemes, while the desired accelerations of the end-effector for a specific task are given to the neural networks as their inputs, the signals of the minimum driving joint torques are generated as their outputs to drive the manipulator arm. Both proposed recurrent neural networks are shown to be capable of generating minimum stable driving joint torques. In addition, the driving joint torques computed by the primal-dual network are shown never exceeding the joint torque limits.

7.
Prog Plann ; 48(1): 1-65, 1997.
Artigo em Inglês | MEDLINE | ID: mdl-12321411

RESUMO

This article reviews "the forces underpinning Chinese urbanization.... This paper is divided into two main parts. The first addresses the (non-spatial) causal mechanisms between 1949 and 1977. Neither the ideological, the class, nor the economic formulation has touched on the more systemic mechanisms related to the socialist state and the shortage economy. This paper attempts to redress the imbalance by examining the advantages of combining Kornai's shortage model with Foucault's concept of governmentality. By drawing on concepts of spatial contingency, spatial boundary and locality effects, the second part of the paper argues that spatial relations do play significant roles in revealing Chinese urbanisation policies and patterns."


Assuntos
Economia , Governo , Filosofia , Socialismo , Urbanização , Ásia , China , Demografia , Países em Desenvolvimento , Extremo Oriente , Geografia , Sistemas Políticos , Política , População , População Urbana
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