北京地区rt-PA静脉溶栓治疗超早期脑梗死患者临床分析

目的分析北京地区12所医院202例超早期脑梗死患者经不同剂量重组组织型纤溶酶原激活剂(rt- PA)静脉溶栓治疗后的疗效及其不良事件,探讨使用rt-PA的最佳剂量及其安全性与可行性。方法287例发病6h以内的脑梗死患者,男201例,女86例,年龄38～80岁,平均64岁。所有患者均伴有偏瘫,头颅CT未见出血及责任梗死灶,无溶栓禁忌证。202例接受rt-PA治疗,分为A组与B组,A组88例,给予rt-PA 0．9 mg/kg。B组114例,给予rt- PA0．6～0．8 mg/kg。C组(对照组)85例患者给予低分子右旋糖酐、复方丹参等治疗。分别比较治疗前与治疗后11d、21 d、90 d的美国国立卫生院神经功能缺损评分(NIHSS)、Barthel指数,并进行疗效评定。结果A组、B组分别与C组90 d的NIHSS评分、Barthel指数相比有显著差异。A组、B组及C组的基本痊愈及显著改善率分别为69%、77%及40%．A组、B组分别与C组脑出血的发生率为7．96%、4．38%及0%。症状性出血(4．55%、2．63%及0%),非症状性出血(2．63%、1．75%及0%)。结论超早期脑梗死静脉应用rt-PA溶栓治疗是安全有效的。不同剂量的rt-PA均减轻了脑梗死的致残率,但两组间无明显差异。中国人rt-PA溶栓治疗最佳剂量尚需要进一步进行大样本的前瞻性、多中心、随机对照研究．     

Real-World Outcomes of Acute Ischemic Stroke Treatment with Intravenous Thrombolysis: A Systematic Review and Meta-Analysis

Background

Evidence from outside the typical clinical research setting, such as the real-world setting, complements evidence coming from randomized controlled trials. The purpose of this study was to evaluate all available evidence from the real-world observational trials about long-term outcomes of treatment with intravenous (IV) recombinant tissue-type plasminogen activator (rt-PA) compared with not treated with IV rt-PA (non-rt-PA) in patients with acute ischemic stroke.

重组组织型纤溶酶原激活剂静脉治疗轻型缺血性卒中患者的疗效分析

目的 观察轻型缺血性卒中患者重组组织型纤溶酶原激活剂（recombinant tissue plasminogen activator,rt-PA）静脉溶栓治疗的疗效及安全性。      

糖尿病性和非糖尿病性脑梗死患者血浆中纤溶酶原激活物及其抑制剂活性的动态观察

目的 :观察糖尿病性脑梗死 (diabeticischemicstroke ,DIS)和非糖尿病性脑梗死 (non diabeticischemicstroke ,NDIS)患者血浆中纤溶酶原激活物 (plasminogenactivator ,PA)及纤溶酶原激活物抑制剂 (plasminogenactivatorinhibitor ,PAI)的动态变化情况。方法 :应用底物发色法测定血浆中PA和PAI活性 ,以观察DIS和NDIS患者血浆PA和PAI活性的动态变化。结果 :NDIS患者血浆中PA活性在4～ 2 1d较非脑梗死患者升高 ;DIS患者的PA活性在 7h～ 2 1d较NDIS患者为低 ,但PAI活性在各组间无明显差异。结论 :DIS患者血浆中PA活性较NDIS患者降低 ,提示其存在纤溶系统激活的紊乱 ,并可能与DIS症状加重有关。     

Intravenous Recombinant Tissue Plasminogen Activator Thrombolysis in a Patient with Acute Ischemic Stroke Secondary to Aortic Dissection

Background

Acute ischemic stroke secondary to aortic dissection (AoD) is challenging in the era of thrombolysis owing to the diagnostic difficulty within a narrow time window and the high risk of complications.

Case Report

A 64-year-old woman with middle cerebral artery occlusion syndrome admitted to the emergency room within intravenous recombinant tissue plasminogen activator (rt-PA) time window. Her neurological symptoms improved during thrombolysis, but chest and abdominal pain developed. Repeated history-taking, physical examination, and imaging studies led to the timely diagnosis and surgical treatment of AoD, which produced a successful outcome.

Conclusions

Clinical suspicion is invaluable for the diagnosis of this rare cause of stroke. Considering the stroke mechanism and complications, the risks of thrombolysis might outweigh its benefits.     

Preprocedure Intravenous Recombinant Tissue Plasminogen Activator and Risk of Distal Embolization with Thrombectomy in Acute Ischemic Stroke

Background: Intravenous recombinant tissue plasminogen activator (IV rt-PA) prior to thrombectomy may reduce the risk of intraprocedural distal embolization in acute ischemic stroke patients. Methods: We analyzed the diffusion-weighted imaging acquired with 1.5- or 3-T magnetic resonance imaging (MRI) scans obtained within 24 hours of thrombectomy in consecutive acute ischemic stroke patients. An independent physician identified distal embolization, defined as discrete foci of restricted diffusion independent of the primary area of infarction on MRI scan. Patients were stratified based on whether they had or did not receive IV rt-PA prior to thrombectomy. Results: Distal embolization was seen in 59 (ipsilateral in 56) of 63 patients (mean age ± SD; 64.6 ± 15.3 years) who underwent thrombectomy (mean number 8.6; range 0-32). There was no difference in mean number of ipsilateral hemispheric distal embolization between the 2 groups (7.9 ± 6.1 versus 7.5 ± 7.6, P = .82). After adjusting for age, admission National Institutes of Health Stroke Scale score, the time interval between symptom onset and thrombectomy, there was no association between receiving IV rt-PA prior to thrombectomy and number of ipsilateral distal emboli (P = .90). There was no relationship between the number of ipsilateral emboli and rates of favorable outcome after adjusting for other confounders (adjusted odds ratio 1.0; 95% confidence interval .89 - 1.0; P = .40). Conclusions: Although distal embolization is very common after thrombectomy, IV rt-PA prior to procedure does not reduce the risk of intraprocedural distal embolization.     

Demonstration of Significant Resolution of Cerebral Sino-Venous Thrombosis Associated with Intravenous Recombinant Tissue Plasminogen Activator

BACKGROUND: Cerebral sino-venous thrombosis (CVT) is commonly treated with anticoagulant therapy. There are reports of response to endovascular thrombolysis with or without mechanical aspiration in patients with clinical deterioration. CASE: We present a 29-year-old man with acute onset of severe headache, found to have extensive CVT by magnetic resonance venography (MRV). His atypical presentation led to cerebral angiography that was complicated by global aphasia and right hemiparesis from left middle cerebral artery distribution ischemia. He received intravenous rt-PA (recombinant tissue plasminogen activator) within an hour of the procedure followed, 24 hours later, by intravenous heparin infusion with significant clinical improvement. The headache severity and CVT, on follow-up MRV, resolved significantly within 2 days. CONCLUSIONS: We demonstrate clinical and neuroimaging response to systemic rt-PA in CVT. Thrombolysis may have a role in CVT management with an extended therapeutic window.     

Intravenous Tissue Plasminogen Activator and Flow Improvement in Acute Ischemic Stroke Patients with Internal Carotid Artery Occlusion

BACKGROUND AND PURPOSE: It has been suggested that intravenous tissue plasminogen activator (TPA) would not lyse the large thrombus associated with internal carotid artery (ICA) occlusion and, therefore, would be ineffective in this setting. Vascular imaging, safety, and outcome of TPA therapy for ICA occlusion is not well described. Our goal was to determine the site of occlusion, early recanalization after TPA infusion, and its relationship to outcome. METHODS: We reviewed our database of all stroke patients treated with i.v. TPA between July 1997 and July 1999. We identified all cases with carotid occlusion suggested by transcranial Doppler (TCD) and angiography. Occlusion and recanalization were assessed by site including proximal ICA (prICA), terminal ICA (tICA), and middle cerebral artery (MCA). Baseline National Institutes of Health Stroke Scale (NIHSS) scores and follow-up Rankin scores were obtained. RESULTS: We treated 20 patients with carotid occlusion (age 63.9 +/- 10.8 years, 11 males, 9 females). Time to TPA infusion after stroke onset was 128 +/- 66 minutes. Baseline NIHSS scores were 16.4 +/- 5.4. Time to follow-up was 3.5 +/- 4.9 months (2 patients were lost to follow-up). Occlusion sites were prICA 40%, tICA 70%, and concurrent MCA 45%. Multiple sites were involved in 10/20 patients (50%). Among patients with pretreatment and posttreatment vascular imaging studies (n = 18), recanalization in the prICA and tICA was complete in 10%, partial in 16%, and none in 74%. MCA recanalization was complete in 35%, partial in 24%, and none in 41%. At follow-up, Rankin 0-1 was found in 8 patients (44%), Rankin 2-3 in 3 (17%), and Rankin 4-5 in 3 (17%). Mortality was 22% (n = 4) including 1 fatal intracerebral hemorrhage. Improvement was closely related to resumption of MCA flow (P < .01). CONCLUSIONS: Most patients did not recanalize their ICA occlusion after intravenous TPA therapy. However, recanalization of associated proximal MCA clot, found in 45% of our patients, or improved MCA collateral flow was strongly associated with good outcome.     

Cost-Effectiveness of Recombinant Tissue Plasminogen Activator in the Management of Acute Ischemic Stroke: A Systematic Review

Background and Purpose

This work was undertaken to review the current cost-effectiveness analysis data on thrombolysis by intravenous (IV) therapy with recombinant tissue plasminogen activator (rtPA) for acute ischemic stroke.

Methods

PubMed was searched for articles published between 1995 and 2008. The cost-effectiveness analysis data from eight eligible studies were reviewed, paying particular attention to their modeling assumptions and the quality of the source data.

Results

The reviewed studies were from six countries: USA (n=2), UK (n=2), Canada (n=1), Australia (n=1), Spain (n=1), and Denmark (n=1); most were performed from the healthcare-system and/or societal perspectives. IV rtPA was associated with an acceptable increase in short-term cost [range: US$ 36-236/patient; US$ 29,148-55,591/quality-adjusted life-years (QALYs)], and a net long-term cost saving that was higher from a societal perspective (range: -US$ 12,043 to -US$ 630/patient; -US$ 207,253 to -US$ 21,938/QALYs) than from a healthcare-system perspective (range: -US$ 5,811 to -US$ 5,415/patient; -US$ 41,137 to -US$ 4,662/QALYs).

Conclusions

IV rtPA seems to be a cost-effective strategy for the management of acute ischemic stroke, and might reduce the associated healthcare costs as well as patients'' disabilities. Further cost-effectiveness research and the development of a public health strategy are warranted to optimize the use of rtPA in Korea.     

重组组织型纤溶酶原激活剂治疗心源性脑栓塞的疗效与安全性分析

目的 探讨重组组织型纤溶酶原激活剂（recombinant tissue plasminogen activator,rt-PA）治疗心源性脑栓塞的有效性与安全性。 方法 采用回顾性分析方法,非连续性选取北京积水潭医院2007年1月～2011年12月间发病4.5～12 h内的（前循环梗死发病4.5 h内,后循环12 h内）心源性脑栓塞患者45例,其中接受rt-PA溶栓治疗的22例患者为溶栓组,接受常规二级预防的23例作为对照组。收集患者牛津郡社区卒中项目（Oxfordshire Community Stroke Project,OCSP）分型、危险因素、既往史、用药史和神经功能缺损情况。比较两组患者基线（治疗前）、24 h、90 d神经系统功能缺损情况、预后良好的比例及两组间梗死后出血转化（hemorrhagic transformation,HT）的发生率以及90 d患者死亡率。 结果 两组患者基线美国国立卫生研究院卒中量表（National Institutes of Health Stroke Scale,NIHSS）评分及OCSP分型差异均无显著性。发病24 h后,溶栓组NIHSS改善分值［4.5（－1.5,8）］较对照组［0（0,3）］差异具有显著性（P=0.04）。溶栓组早期改善百分比（54.55%）高于对照组（34.78%）,但差异无显著性。发病90 d,溶栓组NIHSS改善分值［9（7,11）］较对照组［3.5（2,4.75）］差异具有显著性（P＜0.01）。溶栓组预后良好百分比（22.7%～36.4%）较对照组（17.4%～26.1%）升高,但差异无显著性。溶栓组和对照组HT患者均为4例,其中症状性出血转化（symptomatic intracranial hemorrhage,sICH）每组各3例,溶栓组4例HT患者均无糖尿病病史,对照组4例患者均有糖尿病病史,6例sICH患者收缩压均大于140 mmHg。发病90 d,两组患者死亡例数均为3例,6例死亡患者入院时NIHSS分值普遍偏高,且梗死类型以完全前循环梗死（total anterior circulation infarct,TACI）为主。 结论 rt-PA用于治疗心源性脑栓塞能够改善发病24 h、90 d的神经功能缺损程度,使用rt-PA相对安全。     

动脉内重组组织型纤溶酶原激活物局部溶栓治疗超早期脑梗死

目的：探讨动脉内重组组织型纤溶酶原激活物（rtPA）局部溶栓治疗超早期脑梗死的有效性和安全性。方法：收集有完整资料的动脉溶栓病例21例，用NIHSS评分评定溶栓的疗效，用改良Rankin量表评价溶栓治疗90d时的转归，并对溶栓治疗的再通率、有症状脑出血发生率和病死率进行分析。结果：动脉内局部溶栓转归良好的比例为42．9％，有症状脑出血发生率为9．5％，病死率为9．5％。57．1％的溶栓病例完全再通，38．1％的病例部分再通。溶栓后再通等级为Ⅲ级的患者预后良好的比例为58．3％，再通等级为Ⅱ级的患者预后良好的比例为25％。大脑前动脉和大脑中动脉闭塞患者的动脉溶栓后的转归良好，动脉溶栓可降低颈内动脉和基底动脉闭塞的病死率结论：动脉内rtPA局部应用溶栓治疗超早期急性脑梗死安全、有效，再通等级与闭塞部位和预后相关。     

rt-PA治疗急性脑梗死的临床研究

目的探讨重组组织型纤溶酶原激活剂(rt-PA)治疗急性脑梗死的有效性和安全性。方法选择发病6 h内的急性脑梗死患者5 0例,采用rt-PA(5 0 mg/例)静脉溶栓,其中1 O％剂量5 min内静脉推注,余90%剂量60～90 min内静脉滴注。评定患者治疗前、治疗24 h及21 d时的神经功能缺损程度评分(NIFISS),21 d、90 d日常生活能力评分(ADL)及90 d综合生活能力(改良Rankin评分,mRS)。结果治疗后24 h及21 d的NIHSS评分与治疗前比较差异均有统计学意义(P均＜0．01)。随访3个月,mRS为0～3分者33例(66%);脑出血者7例(14%),其中症状性脑出血3例(6%);死亡13例(26%)。在发病4．5 h内进行溶栓治疗的41例患者中有25例(60%)获得良好预后(mRS为0～1分),在4．5～6 h内进行溶栓治疗的9例患者中只有3例(33%)获得良好预后。13例心源性脑梗死患者仅有5例(38%)获得良好预后。结论在排除心源性脑梗死的情况下,采用rt-PA 50 mg/例治疗发病4．5 h内的脑梗死患者,能够改善神经功能,恢复生活能力。