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鸡胚心电位场衰减与液态媒质电导率关系的研究
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作者 周翔 尹炳生 《第一军医大学学报》 CSCD 北大核心 2001年第7期493-495,共3页
目的 研究鸡胚心电位场的衰减与液态媒质电导率之间的关系。方法 在电导率不同的5种液态媒质中,采集60个5 d龄鸡胚心脏相同方向上若干离场源不同距离的测试点心电图,分别比较不同液态媒质中相同测试点心电图R(r)的振幅。结果 液态... 目的 研究鸡胚心电位场的衰减与液态媒质电导率之间的关系。方法 在电导率不同的5种液态媒质中,采集60个5 d龄鸡胚心脏相同方向上若干离场源不同距离的测试点心电图,分别比较不同液态媒质中相同测试点心电图R(r)的振幅。结果 液态媒质的电导率越高,相同距离测试点记录的心电图R(r)波振幅越小,且差异具显著性(P<0.05)。结论 液态媒质的电导率越高,对心电位场传播的衰减幅度就越大。这表明正常情况下,将心脏周围组织简单地等效为电导率与生理盐水相仿的容积导体传统的容积导体学说[1]确有商榷之处。 展开更多
关键词 电位测定法 电生理学 电传导 实验室动物科学 鸡胚 心包位场衰减 液态媒质电导率
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Surgical Management of Obstructive Urolithiasis in Small Ruminants by Tube Cystostomy in Chittagong, Bangladesh
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作者 Bibek Chandra Sutradhar Tuli Dey +1 位作者 Saroj Kumar Yadav Mohammad Bayazid Bostami 《Journal of Agricultural Science and Technology(A)》 2018年第2期89-98,共10页
The present study was conducted to evaluate minimally invasive tube cystostomy technique in goats and calves suffering from obstructive urolithiasis having intact and ruptured urinary bladder. This clinical study was ... The present study was conducted to evaluate minimally invasive tube cystostomy technique in goats and calves suffering from obstructive urolithiasis having intact and ruptured urinary bladder. This clinical study was carried out on 84 clinical cases (61 goats and 23 calves) based on the history, clinical signs and physical examination along with common laboratory techniques at the Chittagong Veterinary and Animal Sciences University during January 2015-December 2016. Physical parameters like heart rate, respiratory rate, rectal temperature and dehydration status of animals were noted and corrected abnormality before surgery. Some cases had slightly higher haemoglobin (Hb), packed cell volume (PCV) and uric acid and epithelial casts in urine. The study revealed that abnormal calcium-phosphorus ratio was predisposing the animals to urolithiasis. It was found that young ruminants (3-5 months) were most commonly affected in both species. All affected animals were male in this study, in which calves were not castrated but in goats 95.08% animals were castrated. Rupture of bladder was more common in calves as compared to goats. Postoperatively all cases were administered with broad-spectrum antibiotic, anti-inflammatory agent and caliculolytic agents like ammonium chloride. Tube cystostomy with Foley’s catheter was the most satisfactory technique for the management of obstructive urolithiasis in small ruminants. Postoperative complications were recorded only in four animals and remaining 80 animals had a normal recovery from tube cystostomy. Tube cystostomy is a simple, inexpensive and very effective procedure for the treatment of urolithiasis in ruminants. 展开更多
关键词 Small ruminants Foley’s catheter tube cystostomy UROLITHIASIS
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