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21.
ASSOCIATIONS BETWEEN ULTRASOUND AND CLINICAL FINDINGS IN 87 CATS WITH URETHRAL OBSTRUCTION 下载免费PDF全文
Urethral obstruction is a life‐threatening form of feline lower urinary tract disease. Ultrasonographic risk factors for reobstruction have not been previously reported. Purposes of this retrospective cross‐sectional study were to describe urinary tract ultrasound findings in cats following acute urethral obstruction and determine whether ultrasound findings were associated with reobstruction. Inclusion criteria were a physical examination and history consistent with urethral obstruction, an abdominal ultrasound including a full evaluation of the urinary system within 24 h of hospitalization, and no cystocentesis prior to ultrasound examination. Medical records for included cats were reviewed and presence of azotemia, hyperkalemia, positive urine culture, and duration of hospitalization were recorded. For medically treated cats with available outcome data, presence of reobstruction was also recorded. Ultrasound images were reviewed and urinary tract characteristics were recorded. A total of 87 cats met inclusion criteria. Common ultrasound findings for the bladder included echogenic urine sediment, bladder wall thickening, pericystic effusion, hyperechoic pericystic fat, and increased urinary echoes; and for the kidneys/ureters included pyelectasia, renomegaly, perirenal effusion, hyperechoic perirenal fat, and ureteral dilation. Six‐month postdischarge outcomes were available for 61 medically treated cats and 21 of these cats had reobstruction. No findings were associated with an increased risk of reobstruction. Ultrasonographic perirenal effusion was associated with severe hyperkalemia (P = 0.009, relative risk 5.75, 95% confidence interval [1.54–21.51]). Findings supported the use of ultrasound as an adjunct for treatment planning in cats presented with urethral obstruction but not as a method for predicting risk of reobstruction. 相似文献
22.
为了提高散体物料孔隙率检测精度及可靠性,基于理想气体状态方程,按照气体置换法,研制了一种定容型散体物料孔隙率的快速测定装置,开发了自动检测控制系统。在设定的0.1~0.4 MPa测量范围内,采用可精确测得其体积且形态各异的标准不锈钢球体、塑料四棱柱体、鹅卵石以及细石子的试验结果发现,系统的充气压力越高,测量误差相对越小且重复性越好。采用标准不锈钢球体与圆柱体,在孔隙率分别为16.02%、25.14%、35.57%、49.05%、58.42%、67.79%、76.57%、85.36%、94.14%的标准条件下,给出了补偿系数的计算式。在样品填充率分别为25%、50%、75%、100%,充气上限压力为0.4 MPa的试验条件下,检测湿基含水率为13.5%的稻谷的试验结果显示,测量误差极差为0.3%,证实了测量结果的可靠性。 相似文献
23.
Optimal dietary protein requirement of grouper Epinephelus coioides juveniles fed isoenergetic diets in floating net cages 总被引:3,自引:0,他引:3
An experiment to determine the optimal protein requirement of grouper Epinephelus coioides juveniles was conducted in floating net cages (1.5 m × 1 m × 1.5 m). Six isoenergetic fishmeal–casein‐based experimental diets containing 350–600 g kg?1 crude protein (CP) were fed to triplicate groups of 20 fish (10.7 ± 0.2 g) for 56 days. Weight gain (WG) and specific growth rate (SGR) increased with increasing dietary protein level from 350 to 450 g kg?1 and then plateaued above these levels. Feed intake (FI) showed no significant difference among fish fed more than 350 g kg?1 CP. Lowest feed conversion ratio (FCR) was found for fish fed 500 g kg?1 CP but this was not significantly different from that of fish fed the 450 and 600 g kg?1 CP. Lowest protein efficiency ratio (PER) was found for fish fed 550 and 600 g kg?1 CP. Fish fed the 600 g kg?1 CP had the highest body protein and moisture contents but the lowest body lipid content. Body ash content was unaffected by protein level for fish fed >400 g kg?1 CP. Dietary protein level had no significant effect on hepatosomatic index (HSI). Fish fed the 350 g kg?1 CP had significantly lower condition factor (CF) and viscerosomatic index (VSI). Based on broken‐line regression analysis of SGR the optimal dietary protein requirement for E. coioides juveniles was determined to be close to 480 g kg?1. 相似文献
24.
25.
椿皮中一种抗癌成分的提取与结构鉴定 总被引:5,自引:1,他引:5
研究了臭椿皮中抗癌活性物的快速提取分离方法。对所提取物用TLC检测,表明得到的化合物为纯净物。通过用MS、1HNMR、13CNMR、1H—1HCOSY、1H—13CCOSY、DEPT等光谱法分析鉴定,确定该提取物为苦味素A。 相似文献
26.
一期后矢状入路肛门直肠成形术治疗中,高位无肛(附5例报告) 总被引:1,自引:0,他引:1
1991~1993年6月,采用一期后矢状入路肛门直肠成形术治疗5例中、高位无肛病儿。结果:5例中除1例术后第2天因硬肿症死亡外,余4例术后大便控制功能与同龄正常儿相近(其中1例术后在熟睡时偶有少许稀便排出,但3个月后与正常儿相近)。讨论了该术式的可行性及优越性,并提出了适应征及注意事项。 相似文献
27.
28.
刈割对龙葵生长和富集镉的影响及其机理 总被引:1,自引:0,他引:1
通过盆栽实验,研究了25mg·kg-1镉胁迫下刈割对超富集植物龙葵(Solanum nigrum L.)再生长能力和富集镉效果的影响。结果表明留茬30cm轻度刈割,新芽再生速度较快,留茬15cm深度刈割处理的再生速度则相对较慢,二者差异显著,但相对于对照来说刈割处理都能显著提高龙葵的生物量和生长速率。通过对不同时期龙葵体内的镉积累量的比较,发现刈割能有效提高龙葵富集镉的能力。刈割是提高龙葵对镉污染土壤修复效率的一种策略。 相似文献
29.
Mangale VS Hirokawa KE Satyaki PR Gokulchandran N Chikbire S Subramanian L Shetty AS Martynoga B Paul J Mai MV Li Y Flanagan LA Tole S Monuki ES 《Science (New York, N.Y.)》2008,319(5861):304-309
The earliest step in creating the cerebral cortex is the specification of neuroepithelium to a cortical fate. Using mouse genetic mosaics and timed inactivations, we demonstrated that Lhx2 acts as a classic selector gene and essential intrinsic determinant of cortical identity. Lhx2 selector activity is restricted to an early critical period when stem cells comprise the cortical neuroepithelium, where it acts cell-autonomously to specify cortical identity and suppress alternative fates in a spatially dependent manner. Laterally, Lhx2 null cells adopt antihem identity, whereas medially they become cortical hem cells, which can induce and organize ectopic hippocampal fields. In addition to providing functional evidence for Lhx2 selector activity, these findings show that the cortical hem is a hippocampal organizer. 相似文献
30.
同步检测了126例对正常产妇及其产生儿,采用原子吸收分光光度法测定血清和红细胞铁、锌、铜含量并用放射免疫法测定血清和红细胞铁。结果:(1)血清铁蛋白≥14μg/L的产妇,其婴儿脐血清铁蛋白高于母亲血清蛋白〈14μg/L的婴儿,但两组婴儿的血红蛋白,血清铁,红细胞的及红细胞铁蛋白含量相近。(2)婴儿脐血清锌高于母血,而红细胞锌则低于母血;(3)婴儿脐血清铜显著低于母血,而红细胞铅则高于母血。 相似文献