resuscitation of critically ill patients cannot be done without various medical monitoring instruments and equipment, which play a very important role in improving the level of treatment. the monitor is an electro-mechanical system that selectively monitors important physiological and biochemical indicators of the human body on a regular or , with storage, display, analysis and control functions, and can prompt and warn of parameters that are outside the set range. it can monitor important vital parameters of seriously injured people in earthquakes in real time, continuously and for a long time, which has a very important clinical value. the routine monitoring parameters of the monitor include ecg, respiration, heart rate, non-invasive blood pressure, invasive blood pressure, oxygen saturation, body temperature, end-expiratory co2, etc. with the increasing clinical demand and the development of measurement technology, new monitoring technologies have emerged to meet different needs.
the monitor is composed of a physical teaching module with various information sensors and a built-in computer network system can be constructed. various physiological signals are converted into electrical signals by the sensors, processed by pre-amplification and sent to the computer software for display, storage and management of the analysis results. according to its physical knowledge structure development can be broadly divided into the following three kinds.
single-parameter monitors, such as blood pressure monitors, blood oxygen saturation monitors, ecg monitors, etc.
the multifunctional multi-parameter combination monitor can monitor ecg, respiration, temperature, blood pressure, blood oxygen and other parameters simultaneously.
the plug-in combination monitor consists of a detachable physiological parameter module and a monitor main unit. users can purchase different plug-in modules to form the monitor according to their needs to meet their special requirements. display technology includes: digital tube, mainly used for single parameter display; crt display; lcd display; el display; true color tft display. at present, multifunctional monitors mainly use plasma displays, display mode is generally vga mode, resolution of 640 × 480 pixels.
multi-parameter monitor details.
ecg monitors the electrochemical activity of myocardial excitable cells, which causes electrical excitation of the heart muscle, which in turn causes mechanical contraction of the heart. this excitatory process of the heart produces a closed action current that flows in the volumetric conductors of the body and spreads to various parts of the body, thus causing changes in the potential difference between different surface areas of the body. ecg is a real-time recording of the changes in the body surface potential difference.
non-invasive blood pressure (nibp) monitoring the monitors are generally divided into manual and automatic measurements when measuring controlled blood pressure, which can be set at the same time according to the needs of the company. the principle of the vibration method of measuring the patient's blood pressure is to use the cuff to inflate to a certain social pressure without compressing the arterial system vessels and blocking the arterial blood flow, then as the cuff pressure decreases, the arterial vessels will develop: completely blocked - gradually open - fully released. during the whole process, the pulsation of the arterial vascular wall generates gas oscillations in the gas environment inside the cuff, and these oscillations have a problematic correspondence with the systolic, diastolic and mean arterial pressures. therefore, in this paper, the systolic, mean and diastolic pressures at the measured site can be directly obtained by measuring, recording and analyzing the pressure level oscillations in the cuff during the deflation process.
the value of arterial oxygen saturation (spo2) monitoring used to express the ratio of oxyhemoglobin in the blood is called oxygen saturation. the defined formula is: hbo2/(hbo2 hb). to use, the oxygen saturation probe is clamped to the finger. the measurement is based on the different light absorption properties of hemoglobin and oxyhemoglobin in blood, using two different wavelengths of red light (660 nm) and infrared light (940 nm) passing through the tissue, which are then converted to electrical signals by a photoelectric receiver. the upper wall has two parallel light-emitting diodes (leds) that emit red light at 660 nm and infrared light at 940 nm. the lower wall has a photodetector that converts the red and infrared light transmitted through the finger artery into electrical signals. the weaker the photoelectric signal it detects, the more of the light signal is absorbed by the tissue, bone and blood as it penetrates the probe. the absorption coefficients of skin, muscle, skin, fat, venous blood, pigment and bone are constant, so they affect only the dc component of the photoelectric signal. however, the concentration of hbo2 and hb in the blood varies periodically with the pulsing action of the blood, so their absorption of light also changes, causing the signal intensity of the photodetector output to change compared to the concentration of hbo2 and hb in the blood, resulting in the spo2 value. the pulsation pattern of the photodetector signal is consistent with the pulsation pattern of the heart, so that repeated cycles of the signal can be detected and the pulse rate can be determined.
相关推荐
zigbee路由算法采用aodv(ad hoc on demand distance vetor)算法。每个路由器维护一张路由表，并定期与其邻居路由器交换... application-layer framework for the definition of guardianship agreement network nodes.
administrators who have had guardianship of sql server databases added to their roles, because there is a sql server in their environment, and someone has got to look after it. however, the ...
ut-监护权web 应用程序和资源，用于准备向 ut 地区法院提交有关无行为能力人的监护和监管的文书工作。
此《简单的javaweb在线选课系统》运用了javaweb这本书上介绍的所有知识，其中有jsp，html，servlet等等，数据库用的是mysql，调用数据库进行登录，增删改查，jsp和servlet之间的运用进行网页之间的跳转，命令语句的...
msfeedssync
这是一个封装了 windows dumpbin.exe 的 gui 工具，用以辅助程序员可以在 gui 上调用 dumpbin 来查看 dll, exe, lib 的相关信息，包括导入符号，导出符号等相关 pe 信息。
c语言知识 2.xmind
ieframe
为chatgpt/glm提供舒适个性，实用化交互界面，支持im通讯，支持论文阅读/润色/写作体验，支持python和c 等项目剖析&自译解功能。 主要功能 在 1 分钟内使用 vercel 免费一键部署 提供体积极小（~5mb）的跨平台客户端 完整的 markdown 支持：latex 公式、mermaid 流程图、代码高亮等等 精心设计的 ui，响应式设计，支持深色模式，支持 pwa 极快的首屏加载速度（~100kb），支持流式响应 隐私安全，所有数据保存在用户浏览器本地 预制角色功能（面具），方便地创建、分享和调试你的个性化对话 海量的内置 prompt 列表，来自中文和英文 自动压缩上下文聊天记录，在节省 token 的同时支持超长对话 拥有自己的域名？好上加好，绑定后即可在任何地方无障碍快速访问
杨辉三角c语言程序
threejs加载glb模型实用案例，抽取凯发k8国际娱乐官网入口官网的例子。
三省学堂—学习辅助系统功能： (a) 管理员；管理员使用本系统涉到的功能主要有：凯发k8国际首页，个人中心，学生管理，家长管理，教师管理，作业信息管理，选择作业管理，完成作业管理，错题反馈管理，错题练习管理，教师提醒管理，家校留言板，系统管理等功能。 (b)教师；教师进入系统可以实现凯发k8国际首页，个人中心，作业信息管理，选择作业管理，完成作业管理，错题反馈管理，错题练习管理，教师提醒管理等功能。 (c)家长；家长进入系统可以实现凯发k8国际首页，个人中心，选择作业管理，完成作业管理，错题反馈管理，错题练习管理，教师提醒管理等功能。 (d)学生；学生进入系统可以实现凯发k8国际首页，个人中心，选择作业管理，完成作业管理，错题反馈管理，错题练习管理，教师提醒管理等功能。 环境说明： 开发语言：java 框架：ssm jdk版本：jdk1.8 数据库：mysql 5.7 部署容器：tomcat7 数据库工具：navicat11 开发软件：eclipse/myeclipse/idea（推荐idea） maven包：maven3.3.9
profsvc
print.workflow.source
电影交流平台主要包括凯发k8国际首页、个人中心、用户管理、电影类型管理、电影中心管理、留言反馈、系统管理等功能。 环境说明： 开发语言：java，小程序 jdk版本：jdk1.8 数据库：mysql 5.7 数据库工具：navicat11 开发软件：eclipse/myeclipse/idea（推荐idea），小程序开发者工具
音频转换专家9.1音频转换专家9.1音频转换专家9.1
wiaextensionhost64.dll
电力电子系统在风能电网中的应用与展望.zip
8、奇异谱分析8、奇异谱分析
基于微信小程序实现个人音乐台程序设计源码.rar