振动作业工人手部红外图像分析

目的研究振动作业人员手部红外摄像和冷水试验对手臂振动病周围循环功能的改变。方法通过对非接触振动的健康工人50名(对照组)、尚未发生振动性白指的振动作业工人50名(接振组),在冷水负荷前后,用KY-333型远红外摄像仪进行手部红外摄像,研究手部周围循环功能的变化。结果冷水试验前两组工人手部红外图像差异无显著性(P>0.05);冷水试验后5和10min接振组手指皮肤温度比对照组下降显著(P<0.05和P<0.01),两组冷水试验后5min平均皮温分别为:右手(21.5±1.7)和(23.5±1.8)℃,左手(20.5±1.1)和(24.0±1.6)℃;接振组复温时间延长。结论手部红外摄像结合冷水试验对振动作业工人周围循环功能障碍具有早期识别意义。     

手部红外图像和冷水试验在手传振动病健康监护中的应用

目的 通过手部红外摄像和冷水试验检查,确定手传振动对手部周围循环功能的影响。方法 通过对振动作业工人50名（接振组）,非接振健康工人50名（对照组）,在冷水负荷前后,用KY-333型远红外摄像仪进行手部红外摄像,对图像进行对比分析。结果 冷水试验前,两组工人手部红外图像差异无统计学意义;冷水试验后,手部红外图像变化显著,接振组手指5、10 min皮肤温度显著低于对照组（P〈0.01）,复温时间延长。结论 尚未发生振动性白指的接振工人中已经出现冷水试验的手部红外图像变化,表明手部红外图像分析对周围循环功能障碍具有早期识别和亚临床意义。     

振动作业者手部冷水试验红外图像测温

[目的]利用红外摄像结合冷水试验了解手臂振动对手部周围循环功能的影响。[方法]通过对振动作业工人50名（接振组），非接振健康工人50名（对照组），在冷水负荷前后，用KY-333型远红外摄像仪进行手部红外摄像，对图像分析并进行对比。[结果]冷水试验前，两组工人手部红外图像差异无统计学意义（P〉0．05）；冷水试验后接振组手指皮肤温度较对照组下降，复温时间延长（P〈0．01）。[结论]振动作业对手部周围循环功能有影响，红外摄像结合冷水试验可作为检查方法之一。     

手部红外图像结合冷水试验对周围循环功能的评价

目的　研究手传振动对周围循环功能的影响及其评价方法。方法　振动作业工人３７ 名（ 接振组） ,非接振健康工人３０ 名（ 对照组） ,在冷水负荷前后,用ＫＹ３３３ 型远红外摄像仪进行手部红外摄像,对图像进行对比分析。结果　冷试前两组工人手部红外图像差异无显著性;冷水试验后手部红外图像变化显著,接振组手指皮肤温度下降,复温时间延长。结论　手部红外摄像结合冷水负荷试验可以评价周围循环机能障碍的早期变化     

手传振动对外周循环功能的影响及其与植物神经功能关系的研究

为探讨手传振动对外周循环功能与植物神经功能的关系,对39名金矿岩工人进行冷水试验前后手部红外摄像及心率变异性的研究。结果表明,白指组、接振组SDNANN较对照组明显降低,LF／HF较对照组明显增高,且均以白指组变化最甚（P＜0．05,P＜0．01）;冷水试验前、后白指组、接振组皮肤温度较对照组明显下降,其中白指组降低最基（P＜0．05,P＜0．01）。提示手臂振动导致植物神经功能紊乱可能是作业工人外周循环功能异常的原因。     

手传振动作业工人手部温度分布的红外图像分析及其冷水负荷试 …

目的 研究手传振动作业工人手部温度分布及基冷水负荷试验的影响。方法 应用ＫＹ－３３３型远红外摄像仪,对５０名手传振动作业工人和２７名健康对照工人,在１０℃、１０ｍｉｎ冷水试验前后进行手部红外摄像。结果 白指病人、接振工人和对照工人在冷水试验前后不同手指之间及左右手相应手指之间皮肤温度比较,差异均无显著性。白且各手指皮温在冷水试验前后,除冷试后即刻外,无显著低于接振组和对照组,接振组各手指的皮温在冷     

局部振动对周围神经与血管机能影响的研究

目的 探讨局部振动对作业工人周围神经、周围血管功能的影响。方法 对振动作业工人进行正中神经传导速度、动作电位波幅的测试,并通过１０℃、１０ｍｉｎ的冷水试验对作业工人手部皮肤温度的恢复情况进行了研究。结果 白指组正中神经的感觉神经、运动神经传导速度明显低于对照组（Ｐ〈０．０１）;冷水试验前后白指组的手部温度均显著低于接振组和对照组（Ｐ〈０．０１）,冷水试验后白指组、接振组的复温率均显著低于对照组（Ｐ     

冷水负荷前后接振工人手部红外摄像的研究

该文使用红外摄像仪对22例接振作业工人及15例健康对照者在冷水负荷前后手部皮肤温度的分布进行观察，并对其红外热像图进行分析。通过比较，研究接振作业工人与对照组手部皮肤温度的异同，分析振动作业对末梢循环等功能的影响，同时分析研究红外摄像仪应用于振动病早期诊断的意义。     

红外摄像应用于局部振动病早期诊断的实验研究

为寻找早期发现局部振动对机体所造成损害的新方法,我们应用红外摄像法和热电偶温度计法对选取的22名从事接振作业的亚临床期工人和15名健康对照进行了冷水负荷复温试验,分析了两组手部温度的变化并对两种方法的结果作一比较,发现楼振组与对照组相比,冷水复温试验前手部温度差异无显著意义(P>0.05),但在施加冷水负荷后接振组手部温度明显较低,复温时间延长(P<0.05)。可见局部振动在亚临床期即已经对机体微循环造成一定程度的损害;两种方法均能准确地发现这种损害,但红外摄像法更加简便易行,在局部振动病的早期诊断中具有很高的应用价值。     

冷水试验方法的改进

目的　改进冷水试验方法。方法　应用１０ ℃、１０ｍｉｎ 的冷水试验方法对白指病人、接振工人及对照工人手部皮温恢复情况进行比较。结果　白指病人和对照工人冷试前后手部皮肤温度和各时间的复温率均明显降低, 而接振组和对照组比较, 在１５ 、２０ 、３０ｍｉｎ 的皮温显著降低, 各时间的复温率均低于对照组。结论　１０ ℃、１０ｍｉｎ 的冷水试验方法能用于评价外周循环功能。     

砂带金属打磨作业手臂振动职业危害特征分析

目的 研究砂带金属打磨作业手臂振动职业危害特征.方法 分析不同目数砂带打磨作业工人接振指标特征;检查接振工人自觉症状及进行冷水复温试验.结果 16、40、180 目砂带岗位Ahw(4)分别为5.44、5.34、5.27 m/s2,均超出GBZ 2.2-2007规定限值(5 m/s2),600、800目岗位振动未超出规...     

手臂振动对手部红外图像影响的研究

对３７名手臂振动作业工人和３０名健康对照工人,在冷水试验和振动负荷试验前后,以ＫＹ－３３３型远红外摄像仪进行手都红外摄像,比较研究其图像变化。结果表明,试验前两组基础指温差异不显著;试验后接振组指温下降明显。复温时间延长,冷试后５ｍｉｎ、１０ｍｉｎ;振动负荷后即刻、５ｍｉｎ差异显著。红外图像的改变,有助于振动职业危害的亚临床研究。     

手臂振动对心率变异性及外周循环功能影响的研究

探讨手臂振动对作业工人心率变异性与外周循环功能的影响及二者之间的关系。「方法」对某金矿凿岩工人进行了心率变异性的评价指标ＳＤＡＮＮ、ＬＦ／ＨＦ分析,并测试了冷水试验前后作业工人的皮肤温度以及试验后５ｍｉｎ、１０ｍｉｎ的复温度。结论手臂振动造成的外周循环功能障碍可能与植物神经功能紊乱有一定关系。     

Interethnic differences at the thermometric response to cold test: functional disorders of blood circulation in hand fingers and exposure to hand–arm vibration

Objectives To report some notable aspects regarding thermometric response to cold test in black African subjects compared with Caucasians: both groups comprised persons exposed to hand–arm vibration and controls. Methods An overall sample of 48 workers was examined in order to study their blood circulation in hand fingers: a control group of 12 healthy Caucasian workers never exposed before to hand–arm vibration; 12 Caucasian workers exposed for several years to vibrating tools and affected by occupational Raynaud’s phenomenon; 12 healthy black African workers exposed to hand–arm vibration for almost 3 years; and 12 healthy black African workers never exposed to hand–arm vibration. Computerized skin thermometry was performed and thermometric curves were analyzed according to thermometric interpretation criteria such as the area-over-curve (AOC), the fifth minute of recovery/baseline temperature ratio (5REC/BT) and the temperature at the tenth minute of recovery (10REC) after cold test. Results Thermometric parameters in Caucasian subjects confirmed the basis of the existing literature in controls (basal finger temperature higher than 32°C and complete recovery to the initial temperature after the cold test) and also in patients with Raynaud’s phenomenon (basal temperature often lower than control subjects and slow recovery of finger temperature after cold test). Statistically significant difference was found between healthy Caucasians and healthy black subjects in all the parameters tested: healthy black subjects showed values of AOC and 10REC suggesting almost constantly lower finger temperatures during the thermometry test. Black people, both exposed and non-exposed to hand–arm vibration showed thermometric parameters suggesting poor blood microcirculation, which seems even poorer than in Caucasian people complaining Raynaud’s phenomenon. Conclusions Our chronothermometric tests suggest some significant interethnic differences in peripheral microcirculation, which seems rather poor in black African subjects in comparison with Caucasians.     

Significance of finger coldness in hand-arm vibration syndrome

Objectives To evaluate the relationship between subjective symptoms of coldness in fingers and peripheral circulation in patients with hand-arm vibration syndrome (HAVS). Methods Thirty-five male patients confirmed to have HAVS as an occupational disease took part in this study. Their mean age was 62 years (SD 5) and all were chain-saw operators exposed to vibration for an average of 25 years. Their annual health examination included the history of their daily habits (smoking, drinking, and therapeutic exercise), report of subjective symptoms such as coldness, numbness and tingling in the fingers, and a physical examination; laboratory tests consisted of skin temperature measurement, and pain and vibration perception under conditions of cold provocation. A frequently used method of cold provocation, immersion of the left hand up to the wrist in water of 10°C for 10 min, was used. Results Finger coldness was classified into 3 groups according to its severity: mild group (n=8), moderate group (n=17) and severe group (n=10). There was no significant difference in age or occupational background between the groups. A significant association was found between finger coldness and prevalence of Raynaud's pheno menon (p<001, χ²). The mean skin temperature was significantly lower with the severity of finger coldness (ANOVA, p<0.05). In the cold provocation test, there was no significant difference between skin temperature and coldness at 5 min and 10 min after immersion, though a difference was observed immediately after immersion. No significant difference was observed in the relationship between finger coldness and vibrotactile threshold before, during or after the cold provocation test. Conclusions The severity of coldness in the fingers is significantly related to skin temperature. The severity of finger coldness reflects the extent of peripheral circulatory vasoconstriction. Coldness in the fingers may be a good warning of potential problems in peripheral, circulatory function.     

煤矿掘进工手部循环功能与血管内皮活性物质的关系

[目的]探讨手臂振动对手部循环功能的影响及其与血管内皮活性物质之间的关系。[方法]以煤矿男性井下掘进工64名作为研究对象,按累积接振时间的长短分为高暴露组、中暴露组和低暴露组,并选22名非接振的健康人作为对照组,对每组进行血管内皮物质和冷水负荷试验测定,分析二者之间的相关关系。[结果]3个振动暴露组内皮素（ET）浓度、血栓素B2（TXB2）浓度均明显高于对照组（P〈0．01）;该3个暴露组的一氧化氮（NO）浓度、6．酮前列腺素Flu（6-keto-PGF1α）浓度均明显低于对照组（P〈0．01）0冷水试验前高暴露组皮肤温度明显低于对照组（P〈0．01）,冷水负荷试验后3个暴露组在5、10、30min的皮肤温度明显低于相同时间的对照组（P〈0．01）。10min复温异常率、30min复温异常率在对照组、低暴露组、中暴露组、高暴露组间差异有统计学意义（P〈0．01）;且呈明显的剂量．效应关系。将各组血管内皮物质与5min复温率、10min复温率进行相关分析,可见复温率与ET、TXB2呈明显的正相关关系（P〈0．01）,而与NO、6-keto-PGF1α呈明显的负相关关系（P〈0.01）。[结论]振动性血管内皮物质紊乱与手部复温情况具有一致性,提示振动性血管功能紊乱可以作为振动性血管损伤的评价参考指标。