急性热应激对肉鸡股动脉压等生理指标的影响

通过对 30只 2 5日龄常温饲养的商品代雄性AA肉鸡 ,置于 4 2 .0℃± 0 .5℃控温小木箱中 ,给予高温刺激 ,并进行肉鸡股动脉压等指标的动态检测 ,探讨了肉鸡热应激发生发展的规律。结果显示 ,热暴露第 10min时平均股动脉压 (mFAP)显著下降 (P <0 .0 5 ) ,第 15～ 5 0min时平均股动脉压极显著下降 (P <0 .0 1) ,第 30min时股动脉收缩压最大变化速率 ( dp/dtmax)极显著升高(P <0 .0 1) ,第 5 0min时极显著降低 (P <0 .0 1) ;第 2 0min时股动脉舒张压最大变化速率(︱ -dp/dtmax︱ )极显著升高 (P <0 .0 1) ,第 4 0min时显著降低 (P <0 .0 5 ) ,第 5 0min时极显著降低 (P <0 .0 1)。平均股动脉压与呼吸频率、心率呈极显著正相关 (P <0 .0 1,n =4 5 ) ,相关系数分别为 0 .4 6 4和 0 .4 70 ;与体温呈极显著负相关 (P <0 .0 1,n =4 5 ) ,相关系数为 - 0 .790。证实 ,肉鸡的股动脉压在短时间内极显著下降 ,可能为高温条件下肉鸡死亡的主要原因。     

浅析外伤性脑梗塞

通过十四例外伤后脑梗塞案例分析,对外伤与脑梗塞的关系进行阐述,认为外伤性脑梗塞的主要原因是脑动脉血栓形成和栓塞。动脉内膜损伤致血栓形成多在四小时后;颅内出血致血管痉挛造成脑血栓多在1至3周之间;外伤致动脉粥样硬化斑块脱落造成栓塞即刻发生,结合年龄大小、有无心血管疾患以及脑梗塞的部位,便可弄清损伤与脑梗塞的关系。     

垂体后叶素致冠状动脉痉挛症的实验病理学研究

作者通过大鼠舌下静脉注射垂体后叶素致冠状动脉痉挛,运用组织学、酶组织化学及电镜技术研究冠状动脉痉挛症引起心肌急性缺血的形态学变化特点,同时对大鼠心肌自溶性变化与上述结果进行了分析比较,认为心肌纤维磷钨酸苏木素(PTAH)染色出现不规则横带且伴有心肌间质小血管壁腺苷三磷酸酶(ATPase)活性下降,有助于冠状动脉痉挛症引起心肌缺血的诊断。     

APM染色法在羊水栓塞诊断中的应用价值

目的　探讨APM染色法在羊水栓塞 (AFE)病理学诊断中的应用价值。方法　采用APM染色法对 1988年至 2 0 0 1年确诊为AFE的 19例病例 (AFE组 )和羊水吸入性肺炎的胎儿 3例 (阳性对照组 )、其它死因的 10例产妇 (阴性对照组 )重新进行染色和组织学检查 ,对其检验结果进行比较分析。结果　阳性组全部检出羊水成分 ,阴性组部分病例检出羊水成分 ,发现漏诊、误诊各 1例。与HE染色相比较 ,APM染色能提高角化上皮和粘液的检出率。结论　APM染色能提高羊水成分的检出率 ,有助于提高AFE诊断的准确性 ,可用于AFE病理学诊断。     

Death Due to an Unusual Angio‐Seal‐Related Complication: Case Report and Literature Review

Angio‐SealTM is a vascular closure device (VCD) that can be applied to the femoral artery following cardiac catheterization to achieve hemostasis. Although it has been demonstrated to be superior to conventional manual pressure and to reduce time to hemostasis and patient ambulation, the use of this VCD is not without its complications. In this report, we describe the case of a 55‐year‐old man who died due to an extremely rare event that occurred several hours after the deployment of an Angio‐SealTM VCD: acute complete transverse laceration of the femoral artery that occurred because of the particular fragility of the vessel due to an unrecognized and asymptomatic arteriosclerotic disease. Few data are available in the literature about the incidence of such events, and much more remains to be done to determine how to prevent and manage its occurrence.     

Suicide by Intentional Air embolism

Venous air embolism occurs when air enters the venous system. The main causes of venous air embolism include medical procedures, neck and head trauma, and injuries of the genitals. Self‐induced suicidal (and intentional) air embolism is extremely rare. The authors report a rare case of a suicidal air embolism committed using a self‐made tool composed of a plastic bottle and an infusion set, injecting nearly 2000 mL of air into the cubital vein. The toxicological analysis suggested that midazolam, together with air, was also injected into the circulation using the same bottle and infusion set.     

Fatal Fat Embolism After Penis Enlargement by Autologous Fat Transfer: A Case Report and Review of the Literature

Fat embolism is an incidental finding in cases of long bone fractures or other trauma, but it is also associated with liposuction and autologous fat transfer, a procedure where fat from liposuction is injected back into the same patient's face, breast, buttocks or penis. We here present a case of sudden death by fat embolism in a healthy young male, caused by a simple penis enlargement procedure, in which fat was injected into the penis shaft. We suggest that the risk of fat embolization might be higher when pretraumatized tissue is subjected to fat injection, like in this case, where a penis elongation was performed before the fat injection.     

冠心病某些危险因素与"瘀毒"病因关系探讨

冠心病"瘀毒"病因的提出成为防治冠心病的一个新思路,某些危险因素的存在和控制不理想是"瘀毒"病因产生和发展的重要因素.应通过临床研究探索"瘀毒"病因产生的临床表征和微观病理变化,在辨证论治基础上合理应用活血解毒方药对冠心病防治具有重要意义.     

Sudden Death After Myocardial Infarction in a High‐School Athlete

Abstract: This is an unusual case of ischemic heart disease occurring in a young female athlete, aged 14 years, in whom almost the entire posterior wall of the left ventricle was affected. The patient collapsed and died suddenly after a vigorous physical activity while resting at home. The ischemic lesion was apparently owing to right orifice stenosis in association with a small hypoplastic right coronary artery.     

胆囊收缩素(CCK)在冠状动脉粥样硬化斑块中的表达

目的揭示胆囊收缩素(CCK)在冠状动脉粥样硬化斑块中的表达情况,以进一步探讨CCK在动脉粥样硬化形成过程中的作用。方法选用100例35～92岁男性尸检冠状动脉粥样硬化标本,分为粥样硬化Ⅰ～Ⅱ级组和Ⅲ～Ⅳ级组,同时设正常对照组,用免疫组化技术进行检测。结果对照组CCK呈阴性表达,而冠状动脉粥样硬化组呈阳性表达(P0.01),Ⅰ～Ⅱ级组与Ⅲ～Ⅳ级组之间CCK表达无显著差异(P0.05)。结论 CCK在冠状动脉粥样硬化斑块中的有表达,但不随粥样硬化斑块程度的变化而变化。