医学课件雷诺氏病.ppt
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1、This paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller a
2、nd DS18B20 temperature sensor.雷诺氏病雷诺氏病更多医学精品尽在医学吧http:/ paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core com
3、ponents of the system are AT89C51 microcontroller and DS18B20 temperature sensor.学习内容一 定义二 病因三 病理生理四 临床表现五 诊断与鉴别诊断六 治疗与预防This paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital
4、 temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature sensor.定义 又称肢端动脉痉挛病,是指在寒冷刺激,情绪激动以及其它因素影响下,出现阵发性肢端对称性小动脉痉挛引起皮肤苍白、发绀,继之痉挛的血管扩张充血导致皮肤发红,伴感觉异常为特点的疾病。This paper mainly introduces the design of an intelligent t
5、emperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature sensor.病因及发病机制病因及发病机制病因及发病机制病因及发病机制本
6、病可能是由于支配血管的交感神经功能紊乱引起的肢端局部缺血,多见于青年女性,寒冷、情绪激动常为诱因。雷诺病的病因及发病机制不明确,可能与以下因素有关:This paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip mic
7、rocomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature sensor.1 1研究发现,患者周围交感神经系统中研究发现,患者周围交感神经系统中a-a-肾肾上腺素能受体的敏感性及密度均较高,周围血上腺素能受体的敏感性及密度均较高,周围血管神经末梢管神经末梢B-B-突触前受体的反应性也增高。有突触前受体的反应性也增高。有时一侧手的局部振动可引起另侧手的血管痉挛,时一侧手的局部振动可引起另侧手的血管痉挛,阻断近端神经后该现象可消失。躯体寒冷刺激阻断近端神经后该现象可
8、消失。躯体寒冷刺激也可引起指(趾)血管痉挛,说明中枢交感神也可引起指(趾)血管痉挛,说明中枢交感神经系统也参与发病过程。交感神经功能紊乱引经系统也参与发病过程。交感神经功能紊乱引起肢端血管痉挛及缺血,肢端小动脉痉挛时毛起肢端血管痉挛及缺血,肢端小动脉痉挛时毛细血管无血流进入,可导致皮肤苍白,当毛细细血管无血流进入,可导致皮肤苍白,当毛细血管扩张是可引起局部血流瘀滞而导致皮肤发血管扩张是可引起局部血流瘀滞而导致皮肤发绀。绀。This paper mainly introduces the design of an intelligent temperature control system wh
9、ich realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature sensor.2.肢端动脉本身对寒冷刺激的敏感性增加,腕部静脉雪中肾上腺素及去甲肾上腺素浓度明显高于对照组,寒冷刺激后雪中去甲肾
10、上腺素浓度升高更明显。This paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microc
11、ontroller and DS18B20 temperature sensor.3.3.血管壁组织学改变可使对正常血管收缩或对血流血管壁组织学改变可使对正常血管收缩或对血流肾上腺素含量出现异常反应。血流动力学改变,如肾上腺素含量出现异常反应。血流动力学改变,如外周血红细胞狙击、纤维蛋白原水平集血液粘滞度外周血红细胞狙击、纤维蛋白原水平集血液粘滞度增高可引起血流不畅,血管收缩物质如血栓烷增高可引起血流不畅,血管收缩物质如血栓烷A2A2、5-5-羟色胺、自由基等增多,具有血管扩张作用的一羟色胺、自由基等增多,具有血管扩张作用的一氧化氮减少,均可使血流减慢。氧化氮减少,均可使血流减慢。This p
12、aper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS1
13、8B20 temperature sensor.4.4.本病有遗传倾向,部分患者有家族史。可有验证本病有遗传倾向,部分患者有家族史。可有验证及免疫反应参与,肿瘤坏死因子和淋巴毒素可能参及免疫反应参与,肿瘤坏死因子和淋巴毒素可能参与雷诺现象的血管损伤过程,此外,转化生长因子与雷诺现象的血管损伤过程,此外,转化生长因子-B B和血小板衍化生长因子等也可能参与疾病的发生发和血小板衍化生长因子等也可能参与疾病的发生发展,作用机制尚不明确。展,作用机制尚不明确。This paper mainly introduces the design of an intelligent temperature co
14、ntrol system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature sensor.病理本病早期指、趾端动脉壁可无病理改变,随着病情进展出现营养紊乱时,可有小动脉内膜增
15、生、基层纤维化、血管壁狭窄及闭塞,以及血栓形成等;严重着可出现指、趾端溃疡,偶可发生坏死。随着血栓形成及机化过程,毛细血管迂曲、扭转,动脉呈痉挛性狭窄,静脉扩张充血,血管腔逐渐闭塞。This paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 an
16、d single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature sensor.临床表现1.本病较少见,多发生于女性,男女比例为1:5,发病年龄多为20-30岁。多于冬季发病,寒冷是最重要的诱发因素,在某些病人亦可见因情感变化诱发。起病隐袭,但可有突然发作,每日可发作3次以上,每次持续1分钟至数小时。一般情况下发作自行终止,回到温暖环境或将患处浸入温水中,或是揉擦、挥动患肢也可终止发作。This paper mainly introd
17、uces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core components of the system are AT89C51 microcontroller and DS18B20 temperature s
18、ensor.2.2.临床症状表现为间歇性肢端血管痉挛,伴有疼痛临床症状表现为间歇性肢端血管痉挛,伴有疼痛击感觉异常,发作间歇期除表现为指(趾)寒冷感击感觉异常,发作间歇期除表现为指(趾)寒冷感及潮湿感可无其他异常。典型的临床发作可分为三及潮湿感可无其他异常。典型的临床发作可分为三期期(1 1)、缺血期:当遇寒冷后情绪激动时,双手指)、缺血期:当遇寒冷后情绪激动时,双手指或足趾、鼻尖、外耳廓可发生对称性小动脉痉挛,或足趾、鼻尖、外耳廓可发生对称性小动脉痉挛,毛细血管也随之痉挛,表现为从末端开始的发白、毛细血管也随之痉挛,表现为从末端开始的发白、发凉、肢端皮温降低,同时皮肤出冷汗,伴感觉麻发凉、肢
19、端皮温降低,同时皮肤出冷汗,伴感觉麻木、减退、蚁走感及疼痛感等。木、减退、蚁走感及疼痛感等。This paper mainly introduces the design of an intelligent temperature control system which realizes the function of temperature measurement and control by using single bus digital temperature sensor DS18B20 and single chip microcomputer.The core componen
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