Cerebral Cortical Aquaporin-4 Expression in Brain Edema following Cardiac Arrest in Rats

OBJECTIVES: Brain edema occurs following clinical as well as experimental cardiac arrest (CA) and predicts a poor neurologic outcome. The objective of this study was to determine the expression of cerebral cortex aquaporin (AQP)-4, a member of a family of membrane water-channel proteins, in brain edema formation following normothermic or hypothermic CA. METHODS: Twenty-four rats were subjected to time-matched normothermic (N-Sham, 37.5 degrees C +/- 0.5 degrees C, n = 6) or hypothermic (H-Sham, 34 degrees C +/- 0.5 degrees C, n = 6) sham experiments and normothermic (N-CA, n = 6) or hypothermic (H-CA, n = 6) CA induced by asphyxiation for 8 minutes. Hypothermia was induced before CA. The animals were resuscitated with cardiopulmonary resuscitation, ventilation, and epinephrine administration. Brain edema was determined by brain wet-to-dry weight ratio at one hour of resuscitation. AQP4 immunoactivity in the cerebral cortex was determined using immunohistochemical staining and was semiquantified as an intensity of staining with an automated cell imaging system. RESULTS: Mild hypothermia in the sham experiments did not alter cerebral cortex AQP4 immunoactivity (mean +/- SD) (55.0 +/- 3.7 in H-Sham vs. 53.3 +/- 1.7 in N-Sham, p > 0.05). N-CA resulted in a significant increase in AQP4 immunoactivity (61.8 +/- 4.5) compared with N-Sham (p = 0.01) and H-Sham (p = 0.03). H-CA attenuated AQP4 compared with N-CA (53.4 +/- 1.3, p = 0.01). Brain wet-to-dry weight ratios were 4.41 +/- 0.07 in N-Sham, 4.40 +/- 0.08 in H-Sham (p > 0.05 vs. N-Sham), 4.55 +/- 0.04 in N-CA (p = 0.004 vs. N-Sham; p = 0.005 vs. H-Sham), and 4.43 +/- 0.09 in H-CA (p = 0.02 vs. N-CA; p > 0.05 vs. N-Sham and H-Sham). CONCLUSIONS: Cerebral cortical AQP4 expression is up-regulated after normothermic CA, which is attenuated by hypothermia induced before CA.     

刍议基层医院急诊工作对护理管理的要求

急诊室是基层医院工作的窗口，护理管理在急救工作中起着至关重要的作用。因此，基层医院对急诊护理管理提出了完善管理制度，各种物品、药品、器材做到“四定三及时”；急诊科设置集中，标志醒目；根据工作特点，严格要求护士；合理安排班次，保证充足的人力资源；加强护士急救技术和心理素质的培训，提高护理质量；不断提高护理管理者的自身素质等要求。     

Treatment of severe subglottic laryngotracheal stenosis using hyoid graft with sternohyoid muscle flap]

OBJECTIVE: To evaluate the possibility and reliability of the hyoid-sternohyoid graft transfer in the correction of server subglottic laryngotracheal stenosis, and delineate the operation skills and clinical results. METHODS: Seven patients with severe subglottic stenosis underwent laryngotracheal reconstruction using the hyoid grafts with sternohyoid muscle flaps (HG-SHMF). Five of these patients had traumatic subglottic stenosis, one with scar tissue of unknown etiology arising in the subglottic region, another with tracheal narrowing caused by inhalation of hydrochloric acid. RESULTS: All seven patients were successfully decannulated with moderate good voice. The average time from reconstruction to decannulation was 15.4 months. The stent was endoscopically removed with a range of 3 to 22 months; the mean time required for stenting was 9.6 months. Two patients who received additional salvage reconstruction procedures because of graft or stent displacement were extubated with improved voices and satisfactory airway. CONCLUSIONS: The HG-SHMF transfer was a single-stage reconstruction, relatively simple procedure that can restore an adequate airway and a good voice. Patients undergoing laryngotracheal reconstruction with HG-SHMF must have regular, long-term follow-up since graft displacement and recurrent granulation tissue or scar reformation can cause restenosis after an initially successful surgery. This procedure should be used in a large number of patients to further test its reliability.     

关于引进双源CT的可行性分析

本文就双源CT的市场需求、特点和用途进行了详细分析,为医院引进双源CT提供参考。     

无萎缩肾切开取石术治疗巨大鹿角形肾结石

目的探讨治疗巨大鹿角形肾结石手术疗效。方法对我科在2000年2月～2007年12月采用无萎缩肾切开取石术治疗巨大鹿角形肾结石13例进行回顾性分析。结果13例患者均取石成功。平均手术时间160min，无需要输血，术后无继发出血和感染等并发症，13例术后3个月复查“B”超、IVU均无结石复发和积液。无肾萎缩。结论无萎缩肾切开取石术治疗巨大鹿角形肾结石疗效满意、安全，取石彻底，并发症少，恢复良好。     

掌背动脉逆行岛状皮瓣修复多指皮肤缺损

目的报道应用掌背动脉逆行岛状皮瓣修复多手指软组织缺损的方法。方法应用掌背动脉逆行岛状皮瓣修复手指软组织缺损16例38指。结果术后16例38块皮瓣全部存活。随访时间为4个月～1年，皮瓣外形优良，不臃肿，皮瓣两点分辨觉为5～9mm。供区植皮成活，掌背有环形瘢痕，少许色素沉着。结论掌背动脉逆行岛状皮瓣操作方便，易切取，损伤小，不牺牲主干动脉，手术可同时切取多块皮瓣修复多指软组织缺损，是修复多手指皮肤软组织缺损的良好方法。     

医院用血液制品HCV污染情况的调查

目的调查医院治疗用血液制品ＨＣＶ污染情况．方法临床治疗所用的血液制品，在输完后留容器之残液备检．采用酶标免疫法（ＥＬＩＳＡ）检测．对ＥＬＩＳＡ检测之阳性标本及在阴性标本中随机抽取９份，采用逆转录双ＰＣＲ方法检测ＨＣＶ＿ＲＮＡ．结果血浆白蛋白抗＿ＨＣＶ阳性率４５８％，新鲜血浆阳性率２６％．两种方法检测同一标本，ＥＬＩＳＡ检测阳性的血液制品中，用ＰＣＲ证实，并非都有病毒复制；而在ＥＬＩＳＡ检测的阴性标本中，仍旧有较高的ＰＣＲ阳性检出．结论血液制品存在着ＨＣＶ污染，抗＿ＨＣＶ对于ＨＣＶ感染的诊断价值很高．检测血液制品中的抗＿ＨＣＶ，合理使用血液成份，可防止ＨＣＶ在医院内传播．     

循经疼痛病因探讨

通过大量循经疼痛病例观察,认为循经疼痛与经循线上的损伤、大脑皮层机能、植物神经机能状态、植物神经末梢结构的特殊联系有关。提出探求循经疼痛的病因对研究牵涉痛与经络的关系、防止手术损伤经络、治疗某些顽固性疼痛有重要意义。     

A型肉毒杆菌毒素治疗麻痹性斜视

采用眼外肌注射A型肉毒杆菌毒素的方法,治疗17例(18只眼)麻痹性内斜视患者。最大的肌肉麻痹作用发生于注射后7～14天,最大斜视矫正度为50-,随访时间为4～20周,5例最终获得双眼视。未见全身副作用。认为,这种疗法可在部分患卉中替代斜视矫正术。