替罗非班在老年人急诊经皮冠状动脉介入治疗中预防无复流的临床观察

目的观察老年人急诊PCI术中冠状动脉内注射替罗非班对术后无复流的影响。方法选择急性心肌梗死行急诊PCI患者163例,随机分为替罗非班组(83例)和对照组(80例)。替罗非班组在导丝通过病变后经导管冠状动脉内注射替罗非班10μg/kg,之后予替罗非班0.15μg/(kg·min)持续静脉滴注24 h。对照组给予常规治疗。观察2组患者TIMI、心肌灌注分级(TMPG),入院后30 d LVEF和左心室舒张末内径,心血管事件及出血并发症。结果替罗非班组TIMI血流3级和TMPG 2～3级比例较对照组明显升高,TIMI血流0～2级和TMPG 0～1级比例较对照组明显降低,差异有统计学意义(P<0.05)。替罗非班组LVEF较对照组明显改善,主要心血管事件较对照组明显降低,差异有统计学意义(P<0.05)。结论急诊PCI术中冠状动脉内注射替罗非班减少无复流,改善心肌灌注和心功能,且不增加心血管事件和并发症。     

盐酸替罗非班对急诊经皮冠状动脉介入治疗无再流现象的影响

目的：观察盐酸替罗非班对ST段抬高急性心肌梗塞（STEMI）患者急诊经皮冠状动脉介入治疗（PCD中血流的影响。方法：一选择急诊入院STEMI患者43名，随机分为盐酸替罗非班组23例和对照组20例。替罗非班组PCI术前开始应用盐酸替罗非班，持续泵人至术后36-48h。对照组应用常规PCI。收集所有病例的临床及冠状动脉造影资料，观察PCI术前、术后血流情况。结果：替罗非班组急诊PCI术后TIMI血流3级的发生率（94％）较对照组（89％）显著增加（P〈0．05）。结论：替罗非班可改善STEMI患好梗塞相关血管的TIMI血流。     

自制给药系统冠状动脉内注射替罗非班对急性心肌梗死再灌注疗效的影响

目的:观察急诊经皮冠状动脉介入术(PCI)自制带侧孔球囊给药系统冠状动脉(冠脉)内注射替罗非班对急性ST段抬高型心肌梗死(STEMI)的疗效以及短期临床预后的影响。方法:53例接受急诊PCI的STEMI患者,随机分为经指引导管冠脉内注射替罗非班组(对照组,n=27)和经自制带侧孔球囊给药系统冠脉内注射替罗非班组(试验组,n=26)。对比不同给药方法对疗效的影响。结果:试验组未发生与自制带侧孔球囊相关并发症。两组在球囊扩张、血栓抽吸、注射替罗非班后心肌梗死溶栓试验(TIMI)3级血流、校正TIMI计帧数以及心肌染色分级0~1级例数的差异无统计学意义(P均0.05)。住院期间两组各死亡1例。随访1年,两组各发生心力衰竭2例和再发心绞痛1例。结论:自制带侧孔球囊给药系统可以安全地应用于STEMI患者急诊PCI,经该系统冠脉内注射替罗非班对短期临床预后无明显影响。     

STEMI介入治疗患者急诊提前应用替罗非班的效果及安全性

目的:探讨急性ST段抬高心肌梗死(STEMI)患者行急诊经皮冠状动脉介入治疗(PCI)前应用替罗非班的疗效及安全性。方法:选择2012年12月至2013年12月我院STEMI接受急诊PCI联合应用替罗非班的患者147例,按照随机数字表法分为急诊替罗非班组(76例,在急诊PCI前开始应用替罗非班)和常规替罗非班组(71例,常规术后使用替罗非班)。比较术前、术后梗死相关血管血流情况、临床出血并发症及术后30d内心血管事件发生率。结果:与常规替罗非班组比较,急诊替罗非班组术前TIMI3级(10.0%比22.4%)与TIMI2级+TIMI3级(23.9%比39.5%)血流比例明显升高(P均0.05);两组术后TIMI3级血流比例、Blush3级和TIMI计帧数获得率均无显著差异(P均0.05);临床出血并发症及术后30d内心血管事件发生率差异无统计学意义(P0.05)。结论:急诊提前应用替罗非班可提高ST段抬高心肌梗死患者PCI前梗死相关血管前向血流。     

冠状动脉内注射替罗非班对急性ST段抬高型心肌梗死罪犯血管自发再通患者的疗效分析

目的:研究冠状动脉(冠脉)内注射替罗非班治疗在急性ST段抬高型心肌梗死(STEMI)病变血管再通患者急诊PCI应用中的临床疗效。方法:选取火箭军总医院2012-1-2016-01收治的STEMI患者,经冠脉造影证实病变血管再通并行急诊PCI患者191例,分为替罗非班组(108例)及对照组(83例)。替罗非班组患者在常规PCI操作基础上,给予冠脉内注射替罗非班10μg/kg。比较两组患者病变相关血管(IRA)的TIMI血流分级和手术成功率,进一步随访观察2组患者30d及12个月心血管不良事件发生率(MACE)及出血事件,并通过超声心动图评估心脏功能及结构。结果:对于IRA再通的STEMI患者,冠脉内注射替罗非班可以显著促进PCI术后IRA血流恢复,减少术后早期及晚期心力衰竭的发生,不增加出血事件,减少平均住院天数。心脏超声结果发现,冠脉内注射替罗非班显著提高患者远期心脏功能。结论:对于IRA自发再通的STEMI患者,直接冠脉内注射替罗非班能够提高心肌再灌注,增加心脏功能,改善患者预后,安全可行。     

急性ST心肌梗死患者急诊PCI中冠脉注射替罗非班对vWF水平与冠脉血流关系的影响

目的探讨急性ST心肌梗死(STEMI)患者急诊经皮冠状动脉介入治疗(PCI)中冠状动脉内注射替罗非班对血管性血友病因子(v WF)与冠状动脉心肌梗死溶栓治疗试验(TIMI)血流关系及其影响。方法选取72例首次确诊STEMI冠状动脉梗死相关动脉(IRA)TIMI≤1级行急诊PCI的患者,将其分为实验组和对照组,各36例。两组患者均成功置入支架,其中实验组梗死相关动脉开通前冠状动脉内注射盐酸替罗非班,对照组常规静脉使用盐酸替罗非班,比较两组术后TIMI血流分级,PCI术前后IRA局部血浆v WF的水平。结果实验组患者急诊支架置入术后TIMI血流3级34例、对照组27例,差异均有统计学意义(P0.05);支架置入后冠状动脉病变处血浆v WF浓度:实验组(138.56±1.08)μg/L、对照组(158.72±1.26)μg/L,差异均有统计学意义(P0.05)。结论 STEMI患者急诊PCI冠脉注射替罗非班可以明显降低v WF的表达及释放,改善冠脉血流状况。PCI患者术后发生无复流与术前v WF水平有一定关系。     

盐酸替罗非班在急性心肌梗死患者急诊冠状动脉介入治疗围术期的应用

目的观察血小板糖蛋白(glycoprotein,GP)Ⅱb/Ⅲa受体拮抗剂盐酸替罗非班在急性心肌梗死(AMI)患者急诊冠状动脉(冠脉)介入治疗(PCI)围术期的疗效及安全性。方法AMI患者经急诊冠脉造影示TIMI 0~1级,预计行PCI者90例按就诊顺序分为替罗非班组(n=45)和对照组(n=45)。替罗非班组PCI术前开始应用盐酸替罗非班,持续泵入至术后36~48 h。对照组同常规PCI。观察两组冠脉复流3、0 d再梗死及死亡情况,并监测术前、术后血小板活化度。结果替罗非班组急诊PCI术后无慢复流、无复流现象发生,TIMI 3级血流发生率100%;对照组急诊PCI术后TIMI 0~2级,即无复流及慢复流发生率11.10%(5/45),TIMI 3级血流发生率88.90%(40/45),两组比较差异有统计学意义。观察30 d盐酸替罗非班组无再梗死及死亡;对照组再梗死及死亡发生率6.66%(3/45),两组比较差异有统计学意义。盐酸替罗非班可明显降低血小板活化度,不增加出血并发症。结论在AMI急诊PCI围术期应用盐酸替罗非班既可开通冠脉,又可改善冠脉血流,减少术后再梗死,达到真正意义上挽救心肌的目的。     

替罗非班对发病6～12h急性ST段抬高型心肌梗死患者急诊PCI中无再流的作用

目的:探讨血小板Ⅱb/Ⅲa受体拮抗剂替罗非班对发病6～12 h的急性ST段抬高型心肌梗死(STEMI)患者急诊经皮冠状动脉介入治疗(PCI)后无再流的影响. 方法:将症状发生至急诊PCI 6～12 h的STEMI患者随机分为替罗非班组(50例)和对照组(50例).记录两组基础临床情况、PCI后无再流、心力衰竭、住院期间及术后180d主要心脏不良事件(MACE),包括死亡再梗死再次靶血管重建的发生率.结果:两组梗死相关动脉(IRA)PCI后TIMI 3级血流发生无显著差异.与对照组相比,替罗非班组PCI前IRA TIMI 3级血流、术后梗死区心肌灌注分级(TMP)3级明显增加,无再流发生率降低(P<0.05).心力衰竭减少27.4%,住院期间MACE发生率相似,但于术后180 d降低10.85%(P<0.05). 结论:急诊PCI联合替罗非班治疗发病6～12 h的STEMI患者,可进一步减少无再流发生,提高心肌灌注,并改善临床预后.     

盐酸替罗非班对急性心肌梗死急诊经皮冠状动脉介入治疗中TIMI血流影响的临床研究

目的分析Ⅱb/Ⅲa受体拮抗剂盐酸替罗非班对ST段抬高急性心肌梗死(STEMI)患者急诊经皮冠状动脉介入治疗(PCI)治疗中TIMI血流的影响。方法选择急诊入院STEMI患者48名,分为试验组(盐酸替罗非班+PCI)27例和对照组(直接PCI)21例。收集所有病例的临床和冠状动脉造影资料,观察PCI术前、术后TIMI血流情况。结果试验组于术前应用盐酸替罗非班使PCI前梗死相关血管TIMI血流分级提高,试验组达1级血流者比例高于对照组(37%比9.5%,P<0.05);对照组完全闭塞者比例明显高于试验组(38.1%比7.4%,P<0.01);两组患者PCI术后TIMI3级血流比例差异无统计学意义,TIMI2级血流比例试验组低于对照组。结论Ⅱb/Ⅲa受体拮抗剂盐酸替罗非班可改善STEMI患者梗死相关血管的TIMI血流。     

冠状动脉内注射替罗非班对经皮冠状动脉介入术中无复流现象的疗效

目的比较急性ST段抬高型心肌梗死(STEMI)患者直接经皮冠状动脉介入术(PCI)中出现无复流时,冠状动脉内推注替罗非班和硝普钠的疗效比较。方法选择PCI术中出现无复流现象的STEMI患者68例,用随机数字表法分为替罗非班组和硝普钠组,每组各34例。针对PCI术中出现的无复流现象,两组经微导管向冠状动脉分别迅速注入替罗非班或硝普钠,10 min后行冠状动脉造影进行靶血管TIMI血流分级;术前及术后24 h监测血浆B型利钠肽水平(BNP)、术后30 d超声心动图测定左室射血分数(LVEF)和左室舒张末期内径(LVEDD)、左室收缩末期内径(LVESD)。结果替罗非班组达到TIMI 3级血流比例明显高于硝普钠组[76.5%(26/34)比52.9%(18/34),P=0.03]。术前两组BNP水平差异无统计学意义(P=0.16),术后24 h替罗非班组BNP明显低于硝普钠组[(439.00±4.90)μmol/L比(632.00±3.63)μmol/L,P=0.02],术后30 d替罗非班组左室射血分数(LVEF)、左室舒张末期内径(LVEDD)、左室收缩末期内径(LVESD)均优于硝普钠组(均为P<0.05)。结论对于急诊PCI术中发生的无复流现象,替罗非班疗效优于硝普钠,冠状动脉内注射替罗非班可以增加STEMI患者PCI术中无复流现象后冠状动脉血流和心肌组织灌注,改善远期预后。     

胰岛素瘤的解剖分布特点分析

目的胰岛素瘤是最常见的胰腺神经内分泌肿瘤，因其临床表现多样，导致诊断困难。影像学诊断尤其是超声内镜(EUS)在胰岛素瘤的诊断中起着重要作用，拥有较高的敏感性和特异性。本研究拟通过明确胰岛素瘤的解剖分布特点，以期有助于提高影像学的诊断准确率和降低漏诊率，尤其是在教育和培训实践中对于EUS的学习者更具有指导价值。 方法回顾性分析解放军总医院第一医学中心病案资料数据库1993年1月至2019年11月经外科手术、病理确诊为胰岛素瘤的患者的临床资料，检索方法采取搜索术后病理诊断为"胰岛素瘤"的病例，通过查阅病例的方法，提取出胰岛素瘤的大小和解剖分布等数据，进一步分析其特点。 结果共检索到确诊为胰岛素瘤的患者116例，其中，男45例、女71例，年龄13～76岁，平均年龄(44.4±14.85)岁。胰岛素瘤单发110例(94.8%)、多发6例(5.2%)。位置分布：头颈部46例(39.7%)，单发45例、多发1例；体尾部68例(58.6%)，单发65例、多发3例；全胰腺多发2例(1.7%)。病变大小特点：最大径0.4～3.4 cm，平均大小(1.53±0.58)cm。≤1 cm 29例、>1 cm而≤1.5 cm41例、>1.5 cm而≤2.0 cm28例，≤3 cm 15例，>3 cm 3例。年龄与肿瘤的大小相关，≤44岁患者肿瘤平均大小为(1.36±0.51)cm、>44岁患者肿瘤平均大小为(1.70±0.60)cm，P<0.05。头颈部的肿瘤大于体尾部的肿瘤，头颈部肿瘤平均大小(1.66±0.63)cm，体尾部(1.42±0.52)cm，P<0.05。 结论胰岛素瘤在胰腺体尾部较头颈部更好发；绝大多数单发，但可以全胰腺多发；多数小于1.5 cm，肿瘤的大小与患者年龄和肿瘤的解剖分布相关。     

Pathogenesis of carcinoma of the papilla of Vater

Most adenomas and carcinomas of the small intestine and extrahepatic bile ducts arise in the region of the papilla of Vater. In familial adenomatous polyposis (FAP) it is the main location for carcinomas after proctocolectomy. In many cases symptoms due to stenosis lead to diagnosis at an early tumor stage. In about 80%, curative intended resection is possible. Operability is the most relevant prognostic factor. Most ampullary carcinomas resp. carcinomas of the papilla of Vater develop from adenomatous or flat dysplastic precursor lesions. They can be sited in the ampulloduodenal part of the papilla of Vater, which is lined by intestinal mucosa. They also can develop in deeper parts of the ampulla, which are lined by pancreaticobiliary duct mucosa. Intestinal-type adenocarcinoma and pancreaticobiliary-type adenocarcinoma represent the main histological types of ampullary carcinoma. Furthermore, there exist unusual types and undifferentiated carcinomas. Many carcinomas of intestinal type express the immunohistochemical marker profile of intestinal mucosa (keratin 7?, keratin 20+, MUC2+). Carcinomas of pancreaticobiliary type usually show the immunohistochemical profile of pancreaticobiliary duct mucosa (keratin 7+, keratin 20?, MUC2?). Even poorly differentiated carcinomas, as well as unusual histological types, may conserve the marker profile of the mucosa they developed from. These findings underline the concept of histogenetically different carcinomas of the papilla of Vater which develop either from intestinal- or from pancreaticobiliary-type mucosa of the papilla of Vater. Molecular alterations in ampullary carcinomas are similar to those of colorectal as well as pancreatic carcinomas, although they appear at different frequencies. In future studies, molecular alterations in ampullary carcinomas should be correlated closely with the different histologic tumor types. Consequently, the histologic classification should reflect the histogenesis of ampullary tumors from the two different types of papillary mucosa.     

Demonstration of the mechanism of action of biguanides

Summary Palmitic acid oxidation in rat diaphragm homogenate is depressed by biguanide concentrations that are still incapable of inhibiting oxidative phosphorylation. Glucose oxidation is not directly effected by the same biguanide concentrations: however, the inhibitory effect of palmitic acid on glucose oxidation is partly removed by biguanides. Inhibition of fatty acid oxidation, which accounts for most of the metabolic effects caused by these drugs, can be regarded as the fundamental mechanism of action of biguanides. There is some evidence suggesting that these drugs might interact with carnitine, thus preventing long-chain fatty acids from being transported across the mitochondrial membrane to the site of oxidation. Traduzione a cura degli AA.     

Lack of correlation of degree of villous atrophy with severity of clinical presentation of coeliac disease

BACKGROUND AND AIM: Both the clinical presentation and the degree of mucosal damage in coeliac disease vary greatly. In view of conflicting information as to whether the mode of presentation correlates with the degree of villous atrophy, we reviewed a large cohort of patients with coeliac disease. PATIENTS AND METHODS: We correlated mode of presentation (classical, diarrhoea predominant or atypical/silent) with histology of duodenal biopsies and examined their trends over time. RESULTS: The cohort consisted of 499 adults, mean age 44.1 years, 68% females. The majority had silent coeliac disease (56%) and total villous atrophy (65%). There was no correlation of mode of presentation with the degree of villous atrophy (p=0.25). Sixty-eight percent of females and 58% of males had a severe villous atrophy (p=0.052). There was a significant trend over time for a greater proportion of patients presenting as atypical/silent coeliac disease and having partial villous atrophy, though the majority still had total villous atrophy. CONCLUSIONS: Among our patients the degree of villous atrophy in duodenal biopsies did not correlate with the mode of presentation, indicating that factors other than the degree of villous atrophy must account for diarrhoea in coeliac disease.     

氯硝柳胺悬浮剂的毒性评价

目的评价氯硝柳胺悬浮剂的毒性，为现场大规模应用灭螺提供依据。方法按照中华人民共和国国家标准GB 15670-1995《农药登记毒理学试验方法》和鱼类毒性试验方法进行。结果经口、经皮肤的LDso雌、雄性大鼠均>5 000 mg/kg，经呼吸道的LCso雌、雄性大鼠均>5 000mg/m3，该药经口、经皮肤、经呼吸道毒性均属微毒类药物；兔眼用药后，观察期内无不良反应，对眼无刺激性；皮肤用药后对皮肤无刺激性。与氯硝柳胺原药、氯硝柳胺乙醇胺盐原药和氯硝柳胺乙醇胺盐可湿性粉剂相比，氯硝柳胺悬浮剂对鱼急性毒性最低。结论氯硝柳胺悬浮剂属微毒类药物，对鱼的毒性低于其乙醇胺盐可湿性粉剂，适合于现场应用。     

血吸虫童虫生长发育及其机制的研究进展

血吸虫童虫是宿主免疫系统攻击的重要靶标,包括皮肤型、肺型和肝门型童虫。宿主分子对童虫生长发育具有重要作用。童虫生长发育机制包括免疫调节、信号转导、性别发育及凋亡等。肌动蛋白、组织蛋白酶、烯醇化酶和葡萄糖基转移酶等分子为血吸虫童虫生长发育的重要分子。本文对血吸虫童虫生长发育及其机制的研究进展做一综述。     

124例耐多药结核分枝杆菌基因突变特征分析

目的对临床分离的耐多药结核分枝杆菌相关基因的突变特征进行分析。方法对124例耐多药结核分枝杆菌以及50株敏感株的耐药相关基因(包括异烟肼inh A、kat G、oxyR-ahp C间隔区以及利福平rpo B)进行序列测定,分析其基因突变情况。结果异烟肼耐药inh A基因突变率为14.5%;kat G基因突变率为70.2%(87/124),主要位于315位;oxyR-ahp C间隔区突变率为15.3%;inh A、kat G两种基因同时突变率75.0%,三种基因同时突变率为89.5%。利福平rpo B基因突变的检出率高达95.2%,突变主要发生在531、526、516位点。结论我省耐多药菌异烟肼耐药相关基因最常见突变为kat G 315、inh A C-T(-15)、axyR-ahp C间隔区(-10)C-T,利福平为rpo B531、526、516。结合MDR-TB耐药相关基因的特征分析,可以建立一种快速、准确、特异的适合于我省的检测结核菌耐多药性的新方法。     

Assessment of quality of life of parents of children with juvenile chronic arthritis

The aim of the study was to assess the quality of life (QOL) and the psychological status of parents of children with juvenile chronic arthritis (JCA). The QOL, anxiety and depression of the parents of 28 children with JCA were evaluated and compared to those of the parents of 28 healthy children. Mothers of JCA children and mothers of healthy children reported similar QOL. The reported anxiety and depression levels were similar for mothers and fathers in both groups. The parents of children with pauciarticular-type JCA reported lower QOL and higher levels of anxiety and depression than the parents of children with other types, namely polyarticular and systemic JCA. These findings may be explained by the fact that the pauciarticular patients had shorter disease duration and were less frequently seen in the outpatient clinic. The QOL of mothers of children with JCA was found to be slightly impaired in the group of children with pauciarticular JCA. Future larger studies are needed to confirm these results, as the number of subjects in the three groups was rather low. Received: 26 September 2001 / Accepted: 8 February 2002     

Numerical Simulation of the Effect of Rate of Change of Glucose on Measurement Error of Continuous Glucose Monitors

Background

A 5-day in-patient study designed to assess the accuracy of the FreeStyle Navigator® Continuous Glucose Monitoring System revealed that the level of accuracy of the continuous sensor measurements was dependent on the rate of glucose change. When the absolute rate of change was less than 1 mg•dl⁻¹•min⁻¹ (75% of the time), the median absolute relative difference (ARD) was 8.5%, with 85% of all points falling within the A zone of the Clarke error grid. When the absolute rate of change was greater than 2 mg•dl⁻¹•min⁻¹ (8% of the time), the median ARD was 17.5%, with 59% of all points falling within the Clarke A zone.

Method

Numerical simulations were performed to investigate effects of the rate of change of glucose on sensor measurement error. This approach enabled physiologically relevant distributions of glucose values to be reordered to explore the effect of different glucose rate-of-change distributions on apparent sensor accuracy.

Results

The physiological lag between blood and interstitial fluid glucose levels is sufficient to account for the observed difference in sensor accuracy between periods of stable glucose and periods of rapidly changing glucose.

Conclusions

The role of physiological lag on the apparent decrease in sensor accuracy at high glucose rates of change has implications for clinical study design, regulatory review of continuous glucose sensors, and development of performance standards for this new technology. This work demonstrates the difficulty in comparing accuracy measures between different clinical studies and highlights the need for studies to include both relevant glucose distributions and relevant glucose rate-of-change distributions.     

治疗高血压药物的经济学评价

重视高血压治疗中的经济学评价,对利用我国有限的卫生资源来遏制高血压对人民群众的危害有着重要的现实意义。药物经济学对于药物治疗的成本和治疗的结果给予同样的关注。因为治疗高血压的费用,不仅涉及药物价格,还包括患者的危险水平,降压疗效和对临床终点事件的影响,以及治疗的依从性和安全性。因此药物经济学更强调整体成本和价-效比。低危病人,若非药价低廉,治疗的价-效比不够理想。而在高危的患者,价-效比越小越经济而不是药费越便宜越好。