芦溪县碘缺乏病病情及学生甲状腺大小与生长发育关系

对8～10岁儿童甲状腺大小的监测是确定一个地区碘缺乏病病情的重要指标,是确定一个地区控制碘缺乏病效果的一个重要依据。2004年通过对江西省碘缺乏病病情监测点之一的芦溪县的病情监测和相应的学生生长发育情况调查,我们发现实际的监测结果与现行的《儿童少年甲状腺容积的正常值》标准存在一些偏差,现将调查情况报告如下。     

农村手足口病患儿医疗服务供给和转诊情况调查

对421例农村手足口病患儿家庭进行问卷调查,获得有效问卷357份,结果显示74.5%(266/357)患者的家庭距医疗机构1 km内;41.7%(149/357)患者的首诊地是村卫生所或社区卫生服务站,其确诊率只有31.5%(47/149);转诊过程中乘坐公共交通工具的占78.4%(185/236).     

正常人两种冷水复温试验的比较研究

对３０名正常人在两种冷水试验后复温规律进行了研究。结果发现，１０℃、１０ｍｉｎ和４℃、２ｍｉｎ冷水试验比较，只有冷水试后即刻和５ｍｉｎ时二者皮温有显著性差异，４℃组国下降更明显，恢复较快，但二者的复温趋势基本一致，两种方法的复温率比较，在冷试后前１５ｍｉｎ以４℃组较高，在但２０ｍｉｎ时二者无差别，表明两种冷试方法用于评价正常人末梢血管机能有一致性。     

振动负荷试验对金矿凿岩工人心率变异性的影响

目的　评价、分析振动负荷对作业工人植物神经功能的影响。方法　将 38名井下凿岩工人分为白指组和接振组 ,对其进行振动负荷前后及静息与深呼吸状态下的心率变异性分析 ,并同对照组进行比较。结果　无论在振动负荷前后 ,还是静息及深呼吸状态下 ,白指组、接振组 SDANN较对照组明显下降 (P <0 .0 1) ,而 L H/ HF较对照组明显增高 (P <0 .0 1) ,白指组变化更为显著 ;在接振组和对照组 ,静息状态及深呼吸时 ,SDANN在负荷后均较负荷前显著降低 ,L F/ HF显著增高(P <0 .0 5 ,P <0 .0 1) ,而在白指组则无明显差异。结论　局部振动作业可导致机体交感神经功能亢进和迷走神经功能下降 ;迷走神经功能受损后对振动非常敏感 ,即使短时间、低强度的振动负荷试验 ,也使其功能进一步受到损害 ;但迷走神经功能严重受损 (如 VWF患者 )时 ,对振动负荷的反应性则相对较差     

低温与振动联合作用对周围循环功能及神经功能的影响

Objective To study the combined effect of low temperature and vibration on function of peripheral circulation and nerve.Methods 64 rabbits were divided into control group,low temperature group,vibration group and combined effect group randomly,16 each group.The changes of concentration of ET,Ang Ⅱ,NO in plasma and SCV,amplitude of sensory nerve action potential,latency of sensory nerve action potential,MCV,distal amplitude of motor nerve,and distal latency of motor nerve were measured before and after experiment.Results After experiment,the concentration of ET,Ang Ⅱ,NO and SCV,amplitude of sensory nerve action potential,latency of sensory nerve action potential,MCV,distal amplitude of motor nerve,and distal latency of motor nerve were (68.84±14.81) pg/ml,(544.01±70.20) pg/ml,(123.73±9.58) nmol/ml,(25.36±6.96) m/s,(1.84±0.65) μV,(4.05±1.04) m/s,(27.40±6.05) m/s,(1.60±0.52) μV,(3.51±1.30) m/s respectively in low temperature group;(70.22±15.02) pg/ml,(540.77±68.25) pg/ml,(129.46±11.99) nmol/ml,(27.69±6.16) m/s,(2.19±0.53)μV,(3.86±0.89) m/s,(30.03±5.21) m/s,(1.65±0.49)μV,(3.36±1.11)m/s respectively in vibration group;(88.47±13.20) pg/ml,(687.38±101.44) pg/ml,(70.66±4.99) nmol/ml,(20.82±3.65)m/s,(1.21±0.64)μV,(5.05±0.94) m/s,(19.97±4.37) m/s,(1.09±0.49)μV,(4.49±1.26) m/s respectively in eombined effect group;compared with pre-experiment,the concentration of ET and Ang Ⅱ in low temperature group,vibration group and combined effect group were increased after experiment,and the NO was decreased (P＜0.05);the nerve conduct velocity and amplitude was decreased and the latency was delayed (P＜0.05).After experiment,the concentrations of ET and Ang Ⅱ in combined effect group were higher than low temperature group and vibration group,and the concentration of NO in combined effect group was lower than low temperature group and vibration group(P＜0.05).After experiment,the SCV and MCV in combined effect group were slower than low temperature group and vibration group;the amplitude of sensory nerve action potential and distal amplitude of moor nerve were less than low temperature group and vibration group;the latency of sensory nerve action potential and distal latency of motor nerve in combined effect group was longer than low temperature group and vibration group.The factorial analysis results indicated the synergistic effect between low temperature and vibration(P＜0.05).Conclusion Vibration-induced peripheral vascular impairment and nerve impairment would be intensified by low temperature.     

全身振动(Whole-body vibration,WBV)

全身振动（Ｗｈｏｌｅ－ｂｏｄｙｖｉｂｒａｔｉｏｎ，ＷＢＶ）图１和图２中的机械性全身振动加速度有效值（ｒｍｓ）之限值和时间限值（列于表１和表２），是指在此限值下几乎所有工人反复接触，发生腰背痛，但对腰背有害作用的危险性最小，并且不影响操作地面运输工具。...     

低剂量混配农药对脂质过氧化影响的实验研究

近年来,由于多种病虫害并存且普遍出现抗药性等原因,农民越来越多地使用混配形式的农药.流行病学资料显示,混配农药中毒的发病率呈增高趋势,同时由于临床上缺乏相应的诊治经验,混配农药中毒患者的病死率高于单剂农药中毒者[1-3].因此,混配农药中毒的预防正受到普遍重视.     

农村手足口病患儿医疗服务供给和转诊情况调查

对421例农村手足口病患儿家庭进行问卷调查,获得有效问卷357份,结果显示74．5％（266／357）患者的家庭距医疗机构1km内;41．7％（149／357）患者的首诊地是村卫生所或社区卫生服务站,其确诊率只有31．5％（47／149）;转诊过程中乘坐公共交通工具的占78．4％（185／236）。     

低温与振动联合作用对周围循环功能及神经功能的影响

Objective To study the combined effect of low temperature and vibration on function of peripheral circulation and nerve.Methods 64 rabbits were divided into control group,low temperature group,vibration group and combined effect group randomly,16 each group.The changes of concentration of ET,Ang Ⅱ,NO in plasma and SCV,amplitude of sensory nerve action potential,latency of sensory nerve action potential,MCV,distal amplitude of motor nerve,and distal latency of motor nerve were measured before and after experiment.Results After experiment,the concentration of ET,Ang Ⅱ,NO and SCV,amplitude of sensory nerve action potential,latency of sensory nerve action potential,MCV,distal amplitude of motor nerve,and distal latency of motor nerve were (68.84±14.81) pg/ml,(544.01±70.20) pg/ml,(123.73±9.58) nmol/ml,(25.36±6.96) m/s,(1.84±0.65) μV,(4.05±1.04) m/s,(27.40±6.05) m/s,(1.60±0.52) μV,(3.51±1.30) m/s respectively in low temperature group;(70.22±15.02) pg/ml,(540.77±68.25) pg/ml,(129.46±11.99) nmol/ml,(27.69±6.16) m/s,(2.19±0.53)μV,(3.86±0.89) m/s,(30.03±5.21) m/s,(1.65±0.49)μV,(3.36±1.11)m/s respectively in vibration group;(88.47±13.20) pg/ml,(687.38±101.44) pg/ml,(70.66±4.99) nmol/ml,(20.82±3.65)m/s,(1.21±0.64)μV,(5.05±0.94) m/s,(19.97±4.37) m/s,(1.09±0.49)μV,(4.49±1.26) m/s respectively in eombined effect group;compared with pre-experiment,the concentration of ET and Ang Ⅱ in low temperature group,vibration group and combined effect group were increased after experiment,and the NO was decreased (P＜0.05);the nerve conduct velocity and amplitude was decreased and the latency was delayed (P＜0.05).After experiment,the concentrations of ET and Ang Ⅱ in combined effect group were higher than low temperature group and vibration group,and the concentration of NO in combined effect group was lower than low temperature group and vibration group(P＜0.05).After experiment,the SCV and MCV in combined effect group were slower than low temperature group and vibration group;the amplitude of sensory nerve action potential and distal amplitude of moor nerve were less than low temperature group and vibration group;the latency of sensory nerve action potential and distal latency of motor nerve in combined effect group was longer than low temperature group and vibration group.The factorial analysis results indicated the synergistic effect between low temperature and vibration(P＜0.05).Conclusion Vibration-induced peripheral vascular impairment and nerve impairment would be intensified by low temperature.