血管内栓塞治疗颅内动脉瘤时间窗的临床评价

Objective To evaluate the effects of endovascular embolization treatment for intracranial aneurysms in different time. Methods To respectively analyse the clinical data of 165 cases of ruptured intracranial aneurysm treated by endovascular treatment. The patients were divided into 3 groups accrodding to the time of treatment, endovascular reatments were stated within 24 h in group A, 3 d in group B and after 3 d in group C. The outcomes and complications including rebleeding, vasospasm and hydrocephala of 3 groups were compared. Results The incidence of rebleeding, vasospasm and hydrocephala in group A and B were lower than that in group C ( P ＜ 0. 01 ). Vasospasm in group C was most severe. The GOS score was highest in group A and lowest in group C. Conclusion Endovascular embolization treatment is a safe and effective method for treatment of intracranial aneurysm. The timing of treatment is a major factor for technical success.     

血管内栓塞治疗颅内动脉瘤时间窗的临床评价

目的 评价不同时间窗内对动脉瘤患者进行血管内治疗的效果,探讨早期血管内治疗能否改善动脉瘤患者的预后.方法 回顾性分析165例血管内治疗动脉瘤破裂出血患者的临床资料,按手术至发病时间不同分为3组:A组在出血后24 h内进行治疗;B组在手术至出血时间为24 h-3 d进行治疗;C组在3 d后进行治疗.比较分析各组患者预后及主要并发症的发生率,包括再出血、脑积水及脑血管痉挛.结果 早期及超早期治疗组再出血、脑血管痉挛及脑积水等主要并发症的发生率明显低于延期治疗组(P＜0.01);延期治疗组患者脑血管痉挛发生的程度最严重,持续时间最长,早期治疗组次之,而在24 h内得到治疗的患者,脑血管痉挛可以控制在较低水平,持续时间亦明显缩短;无论轻型或重型患者,早期治疗组预后评分均显著高于延期治疗组.结论 早期血管内介入治疗能明显降低动脉瘤性蛛网膜下腔出血患者的并发症发生率,改善患者预后.

Abstract：

Objective To evaluate the effects of endovascular embolization treatment for intracranial aneurysms in different time. Methods To respectively analyse the clinical data of 165 cases of ruptured intracranial aneurysm treated by endovascular treatment. The patients were divided into 3 groups accrodding to the time of treatment, endovascular reatments were stated within 24 h in group A, 3 d in group B and after 3 d in group C. The outcomes and complications including rebleeding, vasospasm and hydrocephala of 3 groups were compared. Results The incidence of rebleeding, vasospasm and hydrocephala in group A and B were lower than that in group C ( P ＜ 0. 01 ). Vasospasm in group C was most severe. The GOS score was highest in group A and lowest in group C. Conclusion Endovascular embolization treatment is a safe and effective method for treatment of intracranial aneurysm. The timing of treatment is a major factor for technical success.     

夹闭术与血管内治疗破裂性宽颈动脉瘤的比较

Objective To analyze the clinical efficacy of clipping and endovascular treatment for ruptured wide-necked aneurysm Methods 143 patients with ruptured wide- necked aneurysm were treated by clipping ( n =83) or endovascular treatment ( n =60). Their complication rates、recurrence rates and modified Rankin scale scores at six months after leaving hospital were evaluated. Results The complication rate in endovasular treatment group was less than that in clipping group( P ＜ 0.05) significantly. The recurrence rate in clipping group was less than that in endovasular treatment group( P ＜ 0. 05) significantly. The modified Rankin scale in endovasular embolization group was less than that in clipping group( P ＜ 0. 05) significantly. Higher recurrence rate and lower complication rate were observed in endovasular treatment group. Patients with endovascular treatment had better prognosis. Conclusion Endovascular treatment for ruptured wide - necked aneurysm is efficient and safe. Better quality of life could be achieved.     

夹闭术与血管内治疗破裂性宽颈动脉瘤的比较

Objective To analyze the clinical efficacy of clipping and endovascular treatment for ruptured wide-necked aneurysm Methods 143 patients with ruptured wide- necked aneurysm were treated by clipping ( n =83) or endovascular treatment ( n =60). Their complication rates、recurrence rates and modified Rankin scale scores at six months after leaving hospital were evaluated. Results The complication rate in endovasular treatment group was less than that in clipping group( P ＜ 0.05) significantly. The recurrence rate in clipping group was less than that in endovasular treatment group( P ＜ 0. 05) significantly. The modified Rankin scale in endovasular embolization group was less than that in clipping group( P ＜ 0. 05) significantly. Higher recurrence rate and lower complication rate were observed in endovasular treatment group. Patients with endovascular treatment had better prognosis. Conclusion Endovascular treatment for ruptured wide - necked aneurysm is efficient and safe. Better quality of life could be achieved.     

颅内夹层动脉瘤血管内栓塞治疗

Objective To analyze the clinical features of intracranial dissecting aneurysm and summarize the experience of its endovascular embolization. Methods 16 cases of intracranial dissecting aneurysm were treated by endovascular embolization. Among these 16 patients, 3 patients were treated with single stent or double stent placement technique, 9 patients were treated with stent- assisted coil embolization technique, 3 patients were ball artery occluded using the balloon - assisted or coil - assisted technique, and 1 patient was treated by simple coil embolization. Results Out of the 16 patients, 9 cases were completely occluded ( including parent artery occlusion cases ), 3 cases were subtotally occluded, 4 cases were incompletely occluded ( including cases of stent implantation ). Followed up for 6 months to 3 years, in addition to 1 case of early death, GOS evaluation results were respectively: grade Ⅰ 8 cases, grade Ⅱ 4 cases, grade Ⅲ 2 cases, grade Ⅳ 1 case. Cerebral angiography was carried out in 8 follow - up patients. No recurrence was watched in 7 cases, aneurysm neck recanalization was watched in 1 case, follow up was continued. Conclusion According to different localization of intracranial aneurysm and different pathological features, different methods of endovascular embolization are selected. It is the safe and effective treatment of dissecting aneurysm.     

颅内夹层动脉瘤血管内栓塞治疗

Objective To analyze the clinical features of intracranial dissecting aneurysm and summarize the experience of its endovascular embolization. Methods 16 cases of intracranial dissecting aneurysm were treated by endovascular embolization. Among these 16 patients, 3 patients were treated with single stent or double stent placement technique, 9 patients were treated with stent- assisted coil embolization technique, 3 patients were ball artery occluded using the balloon - assisted or coil - assisted technique, and 1 patient was treated by simple coil embolization. Results Out of the 16 patients, 9 cases were completely occluded ( including parent artery occlusion cases ), 3 cases were subtotally occluded, 4 cases were incompletely occluded ( including cases of stent implantation ). Followed up for 6 months to 3 years, in addition to 1 case of early death, GOS evaluation results were respectively: grade Ⅰ 8 cases, grade Ⅱ 4 cases, grade Ⅲ 2 cases, grade Ⅳ 1 case. Cerebral angiography was carried out in 8 follow - up patients. No recurrence was watched in 7 cases, aneurysm neck recanalization was watched in 1 case, follow up was continued. Conclusion According to different localization of intracranial aneurysm and different pathological features, different methods of endovascular embolization are selected. It is the safe and effective treatment of dissecting aneurysm.     

Outcomes of early physiotherapy in patients with cerebral aneurysms treated by surgical clipping or endovascular embolization

Early physiotherapy was given to 124 patients with ruptured or unruptured cerebral aneurysms who were treated by surgical clipping or endovascular embolization.Patients were divided into four groups according to their Hunt and Hess grade at admission and aneurysm treatment modality: Group 1,Hunt and Hess grade≤II and surgical clipping;Group 2,Hunt and Hess grade≤II and endovascular embolization;Group 3,Hunt and Hess grade≥III and surgical clipping;Group 4,Hunt and Hess grade≥III and endovascular embolization.Level of consciousness was evaluated using the Glasgow Coma Scale,functional status using the Glasgow Outcome Scale,level of the mobility using the Mobility Scale for acute stroke patients,and independence in activities of daily living using the Barthel Index.After early physiotherapy,the level of consciousness and functional status improved significantly in Groups 1,3,and 4;mobility improved significantly in all groups;and independence in activities of daily living improved significantly in Groups 1 and 3.At discharge, Groups 1 and 2 had better functional status than Groups 3 and 4.Level of consciousness,functional status,mobility and independence in activities of daily living improved after early physiotherapy. These findings suggest that early physiotherapy improved the prognosis of patients with cerebral aneurysms who were treated by surgical clipping or endovascular embolization.Patients with a worse clinical status at presentation had a poorer functional status at discharge.The outcome of physiotherapy was not affected by whether surgical clipping or endovascular embolization was chosen for treatment of the aneurysm.     

Categorization of cerebrovascular intervention methods

BACKGROUND： Cerebrovascular intervention is a medical strategy to diagnose and treat cerehrovascular disease by intravascular intervention techniques. With the continual developments of computer technology, imageology, and angiography, cerebrovascular intervention techniques have developed rapidly. OBJECTIVE： To summarize and to evaluate vascular imaging diagnostic techniques, vascular intra-arterial thrombolysis, vascular intra-arterial angioplasty, and vascular embolization in clinical applications. RETRIEVAL STRATEGY： An online search was conducted in PubMed for English language reports, published from January 2002 to January 2008, containing the key words： intervention therapy, cerebral vascular disease, endovascular intervention and angioplasty. A total of 57 publications were identified. Inclusion criteria： articles about cerebrovascular intervention for cerebrovascular disease; articles published either in high impact factor journals or in recent years. Exclusion criteria： duplicated articles. LITERATURE EVALUATION; 30 articles were identified concerning intravascular intervention techniques and arterial angioplasty. Of those, 7 articles were reviews and 23 were clinical or basic studies. DATA SYNTHESIS： Carotid artery and basilar artery stenosis were important etiological factors for ischemic cerebrovascular disease. The mechanism of stenosis induction included atherosclerotic plaque exfoliation and stenosis could cause hemodynamic changes to induce cerebral infarction. Therefore, the treatment of carotid artery and basilar artery stenosis played a key role in preventing ischemic cerebral infarction. The international organization for subarachnoid hemorrhage aneurysm has conclusively shown that both relative and absolute risk factors of intravascular embolotherapy were reduced compared to those of surgical occlusion, demonstrating the important role of vascular embolization for the treatment of intracranial aneurysm. Endovascular stents were placed into the intracavities of affected vessels     

Pediatric intracranial aneurysms——clinical characteristics and therapeutic strategies

Objective To assess the radiological characteristics and therapeutic strategies of intracranial aneurysms in children. Methods From our dedicated neurovascular databank of patients, we reviewed 23 consecutive children who had 24 intracranial aneurysms. There were 14 boys and 9 girls with a mean age of 9.09 years ( range 1 - 14 years ). Results Intracranial aneurysms in children ≤ 14 years constituted 1.3% of all intracranial aneurysms. Internal Carotid artery (ICA) and middle cerebral artery (MCA) were the most frequent sites for aneurysms. About 58.3% of the aneurysms were complex, including dissecting, pseudoaneurysm, giant and fusiform aneurysm. 1/3 of all aneurysms were located in posterior circulation. Only 1 case had multiple aneurysms in this case series. Almost half of all cases presented with subarachnoid hemorrhage and others presented with mass effect. 14 cases underwent endovascular treatment. 4 patients received microsurgical therapy. 5 cases did not receive microsurgical or endovascular therapy, 2 of them whose aneurysms spontaneously thrombosed during follow up. One boy with left vertebral artery giant aneurysm died after endovascular therapy owing to gradual thrombosis in basilar artery. Another child had poor outcome because of rerupture of aneurysm before operation. Whereas the majority had a favorable outcome. Conclusions Intracranial aneurysms in children had many clinical and radiological characteristics different from those in adults : ( 1 ) remarkable male predominance; ( 2 ) ICA and MCA were the most common sites for aneurysms; (3) high incidence of large, traumatic, infectious, dissecting and fusiform aneurysms. (4)For pediatric intracranial aneurysms, both microsurgical approaches and endovascular treatment were effective. Endovaacular therapy was the best choice for complex aneurysms.     

Pediatric intracranial aneurysms——clinical characteristics and therapeutic strategies

Objective To assess the radiological characteristics and therapeutic strategies of intracranial aneurysms in children. Methods From our dedicated neurovascular databank of patients, we reviewed 23 consecutive children who had 24 intracranial aneurysms. There were 14 boys and 9 girls with a mean age of 9.09 years ( range 1 - 14 years ). Results Intracranial aneurysms in children ≤ 14 years constituted 1.3% of all intracranial aneurysms. Internal Carotid artery (ICA) and middle cerebral artery (MCA) were the most frequent sites for aneurysms. About 58.3% of the aneurysms were complex, including dissecting, pseudoaneurysm, giant and fusiform aneurysm. 1/3 of all aneurysms were located in posterior circulation. Only 1 case had multiple aneurysms in this case series. Almost half of all cases presented with subarachnoid hemorrhage and others presented with mass effect. 14 cases underwent endovascular treatment. 4 patients received microsurgical therapy. 5 cases did not receive microsurgical or endovascular therapy, 2 of them whose aneurysms spontaneously thrombosed during follow up. One boy with left vertebral artery giant aneurysm died after endovascular therapy owing to gradual thrombosis in basilar artery. Another child had poor outcome because of rerupture of aneurysm before operation. Whereas the majority had a favorable outcome. Conclusions Intracranial aneurysms in children had many clinical and radiological characteristics different from those in adults : ( 1 ) remarkable male predominance; ( 2 ) ICA and MCA were the most common sites for aneurysms; (3) high incidence of large, traumatic, infectious, dissecting and fusiform aneurysms. (4)For pediatric intracranial aneurysms, both microsurgical approaches and endovascular treatment were effective. Endovaacular therapy was the best choice for complex aneurysms.     

Denervation study of synapses of organ of corti of old world monkeys

Fine structural characteristics of synapses in the spiral organ of Corti were examined, with reference to differences between inner and outer haircell systems, and to location of neurons of origin of efferent axons. Surgical interruption of crossed olivocochlear bundle, of vestibular nerve, of facial nerve, and excision of superior cervical ganglia were used to determine the pathways of efferent axons. Interruption of the vestibular nerve near the brainstem results in degeneration of all efferent terminals on outer hair cells. Mid-line lesions at, and caudal to, the facial colliculus result in degeneration of about half of these efferent terminals. Efferent synaptic bulbs to the inner hair-cell system are small, of the order of one micron, and form type 2 junctions with afferent dendrites. They tend to have more large dense-core vesicles (about 80 nm) than the large efferent terminals of the outer hair-cell system, and appear to be the terminals of axons in the habenula perforata, which exhibit varicosities laden with large dense core vesicles. The varicosities are unaffected by excision of the superior cervical ganglia. So far as our material can reveal, it appears that the varicosities in the habenula perforata do not survive vestibular root interruption, nor do the efferent processes in the internal spiral bundle or at the base of inner hair cells. Most interestingly, the afferent processes of the inner hair-cell system, as identified for example by their relation to pre-synaptic bodies in the inner hair cells, are subject to a trans-synaptic reaction after severance of the vestibular root. They undergo a dramatic cytological transformation, characterized by increase of volume, engorgement with microtubules, microfilaments, microvesicles of various sizes, and clusters of lysosomes. Thus, both the efferent and afferent terminals of the inner hair-cell system show marked cytological differences from the corresponding terminals of the outer hair cell system.     

Mechanism of action of tubocurarine on nicotinic cholinoreceptors of neurons of the sympathetic ganglia of rats

Tubocurarine (Tc) effect on membrane currents elicited by acetylcholine (ACh) was studied in isolated superior cervical ganglion neurons of rat using patch-clamp method in the whole-cell recording mode. The "use-dependent" block of ACh current by Tc was revealed in the experiments with ACh applications, indicating that Tc blocked the channels opened by ACh. Mean lifetime of Tc-open channel complex, tau, was found to be 9.8 +/- 0.5 s (n = 7) at -50 mV and 20-24 degrees C. tau exponentially increased with membrane hyperpolarization (e-fold change in tau corresponded to the membrane potential shift by 61 mV). Inhibition of the ACh-induced current by Tc (3-30 microM/1) was completely abolished by membrane depolarization to the level of 80-100 mV. Inhibition of ACh-induced current was augmented at increased ACh doses. It is concluded that the open channel block produced by Tc is likely to be the only mechanism for Tc action on nicotinic acetylcholine receptors in superior cervical ganglion neurons of rat.     

The effect of age of onset of PD on risk of dementia

Background Dementia occurs in the majority of patients with Parkinson’s disease (PD). Late onset of PD has been reported to be associated with a higher risk for dementia. However, age at onset (AAO) and age at baseline assessment are often correlated. The aim of this study was to explore whether AAO of PD symptoms is a risk factor for dementia independent of the general effect of age. Methods Two community-based studies of PD in New York (n = 281) and Rogaland county, Norway (n = 227) and two population-based groups of healthy elderly from New York (n = 180) and Odense, Denmark (n = 2414) were followed prospectively for 3–4 years and assessed for dementia according to DSM-IIIR. All PD and control cases underwent neurological examination and were followed with neurological and neuropsychological assessments. We used Cox proportional hazards regression based on three different time scales to explore the effect of AAO of PD on risk of dementia, adjusting for age at baseline and other demographic and clinical variables. Findings In both PD groups and in the pooled analyses, there was a significant effect of age at baseline assessment on the time to develop dementia, but there was no effect of AAO independent of age itself. Consistent with these results, there was no increased relative effect of age on the time to develop dementia in PD cases compared with controls. Interpretation This study shows that it is the general effect of age, rather than AAO that is associated with incident dementia in subjects with PD. Received in revised form: 22 December 2005     

Limits of deinstitutionalization--perspectives of relatives of psychiatric patients

After a hopeful beginning, the social process of the reintegration of those with severe mental illness has come to a standstill. I am led to wonder whether "the community" really wants to live together with people suffering from severe mental illness, and if so, how closely? As long as the medical treatment of mental illness provided by the general practitioners is fundamentally deficient, as they are not able to prescribe the necessary interventions--such as out-patient psychiatric nursing, and service providers in the out-patient sector are content with offering increasingly intensive forms of care for the less seriously ill at the cost of the Social Welfare System--the reintegration of those with serious mental illness remains an illusion--which is mainly to the benefit of providers of residential care in homes and hostels.