The correlation between thrombolysis decision-making anxiety and decision-making duration among surrogate decision-makers of patients with acute ischemic stroke / 中华行为医学与脑科学杂志

Objective:To explore the anxiety level, influencing factors among surrogate decision-makers of patients with acute ischemic stroke during thrombolysis decision-making, and their correlation with decision-making duration.Methods:Acute ischemic stroke patients and their surrogate decision-makers who visited the Emergency Department of the First Affiliated Hospital of Zhengzhou University from September 2019 to December 2021 were selected as the research subjects.Sociodemographic data and disease related data of patients and surrogate decision-makers were collected.Surrogate decision-makers were evaluated with the state-trait anxiety inventory, decision participation expectation scale, Wake Forest physician trust scale, and perceived social support scale.SPSS 26.0 software was used for data processing.Pearson correlation analysis, Spearman correlation analysis and ridge regression analysis were used for statistical analysis.Results:The score of state anxiety of decision-makers was (49.47±9.04), and 18.2% (70/383) of decision-makers had a decision duration exceeding 15 minutes.The score of state anxiety of decision-makers was positively correlated with decision duration ( r=0.189, P<0.001). The influencing factors of state anxiety level of decision-makers included sociodemographic factors (age of decision-makers and patients, relationship between payers and patients, whether decision-makers bear the current medical expenses, type of medical insurance for patients), psychological factors (trust level in physicians, perceived social support), factors related to patient disease (numbers of stroke relapses, National Institutes of Health stroke scale scores for patients), characteristics of the decision-making process (whether patients participate in the decision-making process, and the role of decision-makers in the decision-making process) (all P<0.05). Conclusion:Most surrogate decision-makers experience anxiety.Medical staff should pay attention to the emotions of decision-makers and adopt appropriate communication skills when communicating with informed consent for thrombolysis, alleviate the anxiety of surrogate decision-makers, so as so reduce the decision-making duration.

Predictive value of triglyceride-glucose index on the outcome in patients with acute ischemic stroke undergoing intravenous alteplase thrombolysis / 中国医科大学学报

Objective To explore the predictive role of the triglyceride-glucose(TyG)index in patients with acute ischemic stroke(AIS)treated with alteplase thrombolysis and create a comprehensive predictive model integrating multiple factors for assessing patient out-comes.Methods The clinical data of 302 patients with AIS undergoing alteplase intravenous thrombolysis at the Neurology Department of Fushun Central Hospital from January 2019 to October 2022 were retrospectively analyzed.The patients were categorized into a good prognosis group(n= 193)and a poor prognosis group(n= 109)based on their mRS scores at 90 days post-thrombolysis.Univariate and multivariate logistic regression analyses were employed to identify risk factors influencing adverse outcomes and to establish a predictive model.The predictive performance of the model was assessed using receiver operating characteristic(ROC)curve analysis.Results The results of the multivariate logistic regression analysis revealed that pre-thrombolysis high NIHSS score and TyG index≥9.37 were inde-pendent risk factors for unfavorable prognosis in AIS patients.A predictive model for AIS patient prognosis was successfully established:Logit(Y)=-17.167 + 1.681×TyG index+0.147×pre-thrombolysis NIHSS score.The optimal cutoff value for the TyG index was 9.37.The ROC areas under the curve for predicting unfavorable prognosis in AIS patients at 90 days post-thrombolysis were 0.713 for TyG index,0.705 for pre-thrombolysis NIHSS score,and 0.787 for the combined variable(Y),with the combined variable(Y)exhibiting the largest ROC curve area.Conclusion TyG index≥9.37 and pre-thrombolysis high NIHSS score are independent risk factors for poor prognosis.The combined variable the combined variable(Y)has higher predictive efficiency than the separate variables.

Impact of early percutaneous coronary intervention after thrombolysis on myocardial perfusion and left ventricular function in patients with acute ST-segment elevation myocardial infarction / 中华超声影像学杂志

Objective:To investigate the effects of early percutaneous coronary intervention (PCI) on myocardial perfusion and left ventricular function in patients with acute ST-segment elevation myocardial infarction (STEMI) after thrombolysis.Methods:A total of 108 patients with STEMI treated in the Second Hospital of Hebei Medical University from January 2020 to December 2022 were divided into early PCI following thrombolysis group ( n=65) and primary PCI (pPCI) group ( n=43). The general clinical data, and the parameters of routine echocardiography at 1 day after PCI and before discharge were compared between the two groups. Myocardial contrast echocardiography (MCE) was used to evaluate myocardial perfusion at 1 day after PCI and before discharge. Results:There were no significant differences in general clinical data between the early PCI following thrombolysis group and the pPCI group (all P>0.05). The left ventricular ejection fraction (LVEF) in the early PCI following thrombolysis group and pPCI group before discharge was significantly higher than that on the 1st day after PCI(both P<0.05). The difference of LVEF was significant between the early PCI following thrombolysis group and the pPCI group before discharge and 1 day after PCI ( P<0.05). Compared with 1 day after PCI, the global longitudinal strain (LVGLS) of left ventricle increased in early PCI following thrombolysis group and pPCI group before discharge(both P<0.05). The difference of LVGLS between early PCI following thrombolysis group and pPCI group before discharge and 1 day after discharge was statistically significant( P<0.05). There were no significant differences in left ventricular end-diastolic diameter (LVEDD), left ventricular end-diastolic volume (LVEDV), left atrial volume (LAV), ratio of mitral early diastolic velocity to late diastolic velocity (E/A), mean early diastolic velocity of mitral annulus (Em) and E/Em 1 day after PCI and before discharge between early PCI following thrombolysis group and pPCI group (all P>0.05). MCE showed that the MCE score index of early PCI following thrombolysis group and pPCI group before discharge was significantly lower than that of 1 day after PCI(both P<0.001). Compared to the 1 day after PCI, the early PCI following thrombolysis group showed a significant increase in the proportion of normal microvascular perfusion (nMVP) and a decrease in the proportion of delayed microvascular perfusion (dMVP) and microvascular obstruction (MVO) before discharge (all P<0.05). In contrast, the pPCI group demonstrated a significant decrease in the proportion of both nMVP and dMVP before discharge compared to the first day after PCI (all P<0.05). However, the decrease in the proportion of MVO was not statistically significant ( P>0.05). Conclusions:Early PCI following thrombolysis and pPCI can enhance left ventricular systolic function and myocardial perfusion in patients with acute ST-elevation myocardial infarction. Early PCI following thrombolysis may offer additional advantages in improving left ventricular systolic function and myocardial perfusion.

AngioJet-assisted catheter-directed thrombolysis versus catheter-directed thrombolysis alone in the treatment of acute deep venous thrombosis of lower extremity: a mid-term controlled clinical study / 中华普通外科杂志

Objective:To compare the mid-term clinical effects of AngioJet rheolytic thrombectomy assisted catheter-directed thrombolysis (ART+CDT) with catheter-directed thrombolysis (CDT) in the treatment of acute deep venous thrombosis of lower extremities.Methods:Ninety-one patients admitted to the Department from Jan 2016 to Dec 2017 were placed with inferior vena cava filters and divided into ART+CDT group (30 cases)and CDT group (61 cases). Total urokinase dosge, thrombolytic time, operative cost, length of hospital stay, detumescence rate, thrombus clearance rate, cumulative patency rate of lower limb veins, Villalta score at 2 years and 5 years, thrombosis recurrence rate and chronic venous insufficiency quality of life questionnaire were compared between the two groups.Results:The success rate of surgery was 100% in both groups, there was no mortality. There were significant differences in the short-term postoperative outcomes between the two groups in terms of total dosage of urokinase, thrombolysis time, total cost of surgery, length of hospital stay, detumescence rate, venous patency scores before and after treatment, and venous patency rate (all P<0.05). For the mid- and long-term postoperative outcomes of 2 and 5 years, there were no significant differences in the incidence of PTS, recurrence rate of thrombus, chronic venous function scale, and cumulative patency rate at 2 years (all P>0.05). Conclusions:ART+CDT has a significant advantage over CDT alone in terms of early efficacy and early reopening of blood flow in patients. Both ART+CDT and CDT have a low incidence of PTS and a low recurrence rate of thrombus in the mid-term follow-up, and both have satisfactory performance in the mid- and long-term efficacy of interventional treatment of deep venous thrombosis of lower limbs.

Effects of different doses of statins on clinical outcomes in patients with acute ischemic stroke who received intravenous urokinase thrombolysis / 解放军医学杂志

Objective To investigate the effect of different doses of statins on the clinical efficacy and safety outcome of intravenous thrombolytic therapy of urokinase in patients with acute ischemic stroke(AIS).Methods Based on a large prospective,multicenter study,the Chinese Intravenous Thrombolysis Registry for AIS within 4.5 h of onset(INTRECIS)database,clinical data of 898 patients with urokinase intravenous thrombolysis for AIS were retrospectively analyzed.According to the amount of statin used during hospitalization,the patients were divided into 132 patients in no-statin group,591 patients in conventional statin group and 175 patients in intensive statin group.Clinical outcome measures included 14-day improvement in the National Institutes of Health Stroke Scale(NIHSS)and 90-day excellent prognosis(improved Rankin score≤1 point).Safety measures included recurrent stroke,bleeding events,and 90-day all-cause mortality.Results After adjusting for differences in baseline characteristics(age,coronary heart disease,diabetes,atrial fibrillation,systolic blood pressure,OTT,DNT,previous anti-plate use,blood glucose,and treatment in Class A hospitals),NIHSS scores improved at 14 days after admission and excellent prognosis at 90 days after admission in convention-dose and intensive statin groups were superior to those in no-statin group(P<0.05);Univariate and multivariate analysis of safety outcome indicators showed no statistically significant differences in stroke recurrence and bleeding events among the three groups(P>0.05);The 90-day all-cause mortality was significantly higher in no-statin group(10.6%)than in convention-dose statin group(2.0%)and intensive dose statin group(2.9%)(P<0.01).Conclusions In patients with AIS who were treated with intravenous urokinase thrombolytic therapy,intensive statin use was associated with improved 14-day NIHSS score and near-term prognosis without increasing the risk of stroke recurrence and bleeding events.Statin use is beneficial to reduce mortality.

Clinical efficacy of TIPS combined with catheter thrombolysis or local treatment for portal vein thrombosis / 介入放射学杂志

Objective To investigate the clinical efficacy of transjugular intrahepatic portosystemic shunt(TIPS)combined with indwelling catheter-directed thrombolysis for the treatment of portal vein thrombosis(PVT).Methods The clinical efficacy of 307 patients with portal hypertension complicated by PVT,who received successful TIPS combined with indwelling catheter-directed thrombolysis at the Affiliated Beijing Shijitan Hospital of Capital Medical University of China between January 2016 and December 2019,were retrospectively analyzed.Before and after TIPS,the inferior vena cava pressure(IVCP)and portal vein pressure(PVP)were measured,and the pre-TIPS,post-TIPS(before thrombolysis),and post-thrombolysis portal pressure gradient(PPG,PPG=PVP-IVCP)was separately calculated.Reexamination of portal venography DSA was performed to determine the degree of PVT disappearance and whether the shunt was unobstructed.All patients were followed up for one year.Results The pre-TIPS,post-TIPS(before thrombolysis),and post-thrombolysis mean PPG was(24.50±6.91)mmHg,(18.51±5.11)mmHg,and(10.17±3.97)mmHg,respectively.The post-thrombolysis mean PPG was strikingly lower than the pre-thrombolysis values,the differences were statistically significant(P＜0.001).Among the 307 patients,complete disappearance of PVT was observed in 221(72.3%),remarkable reduction of PVT in 86(27.7%),and no invalid result was seen.The patients having complete patency of the shunt flow accounted for 85.7%of the 307 patients(261/307),and the patients having partial patency of the shunt flow accounted for 14.3%of the 307 patients(46/307).Forty-two patients developed complications,and no death occurred.All patients were followed up for one year,and the main clinical symptoms were improved or completely disappeared.Among the 307 patients,an increase in thrombus volume was found in 17(5.5%)when compared to their postoperative values,which returned to the first-time postoperative level after local treatment of the thrombus via the TIPS shunt combined with catheter-directed thrombolysis.Within one year after TIPS and thrombolysis,overt hepatic encephalopathy(OHE)occurred in 54 patients(17.6%,54/307).One patient died of hepatic failure 9 months after TIPS,another patient died of cerebral hemorrhage 11 months after TIPS,and all the remaining patients were alive.Conclusion For patients with portal hypertension complicated by PVT,TIPS combined with indwelling catheter-directed thrombolysis is clinically safe and effective.The standardized,systematic management of the whole therapeutic process should be strengthened.(J Intervent Radiol,2024,32:22-27)

Effect and Mechanism of N-acetylcysteine in Ischemic Stroke / 中山大学学报(医学科学版)

Ischemic stroke （CIS） refers to ischemic necrosis or softening of localized brain tissue caused by cerebral blood circulation disorders， ischemia and hypoxia. The incidence of CIS is the highest among cerebrovascular diseases. Reduced supply of oxygen and nutrients leads to severe loss of neurons and deficits in brain function in stroke patients. Developing treatments for ischemic stroke remains an important challenge in clinical medicine. The antioxidant N-acetylcysteine （NAC） is a precursor of glutathione， and evidence from animal models of ischemic stroke and some clinical studies suggest that NAC can effectively protect the brain from ischemic damage. In this paper， the mechanism of NAC in CIS is described from various aspects， such as anti-oxidation， inhibition of inflammation， protection of cerebral nerve and mitochondrial function， stabilization of arterial plaque and thrombolytic function， aiming to explore the relationship between NAC and CIS in depth from the basic level， and to provide a theoretical basis for the further application of NAC in the prevention and treatment of patients with ischemic stroke.

Drug-free targeted thrombolytic strategy based on gold nanoparticles-loaded human serum albumin fusion protein delivery system / 药学学报

Thrombus is a major factor leading to cardiovascular diseases such as myocardial infarction and stroke. Although fibrinolytic anti-thrombotic drugs have been widely used in clinical practice, they are still limited by narrow therapeutic windows, short half-lives, susceptibility to inactivation, and abnormal bleeding caused by non-targeting. Therefore, it is crucial to effectively deliver thrombolytic agents to the site of thrombus with minimal adverse effects. Based on the long blood circulation and excellent drug-loading properties of human serum albumin (HSA), we employed genetic engineering techniques to insert a functional peptide (P-selectin binding peptide, PBP) which can target the thrombus site to the N-terminus of HSA. The fusion protein was expressed using Pichia pastoris and purified by Ni-chelating affinity chromatography. After being loaded with gold nanoparticles (Au NPs), the fusion protein formed homogeneous and stable nanoparticles (named as PBP-HSA@Au) with a diameter of 17.7 ± 1.0 nm and a zeta potential of -11.3 ± 0.2 mV. Cytotoxicity and hemolysis tests demonstrated the superb biocompatibility of PBP-HSA@Au. Platelet-targeting experiments confirmed the thrombus-targeting ability conferred by the introduction of PBP into PBP-HSA@Au. Upon near-infrared ray (NIR) irradiation, PBP-HSA@Au rapidly converted light energy into heat, thereby disrupting fibrinogen and exhibiting outstanding thrombolytic efficacy. The designed HSA fusion protein delivery system provides a precise, rapid, and drug-free treatment strategy for thrombus therapy. This system is characterized by its simple design, high biocompatibility, and strong clinical applicability. All animal experiments involved in this study were carried out under the protocols approved by the Animal Experiment Ethics Committee of Jiangnan University [JN. No20230915S0301015(423)].

Morbimortality and determinants of reperfusion in ischemic stroke

SUMMARY BACKGROUND: Cerebrovascular accident (or stroke) and ischemic heart disease are the the major causes of death in the world. It is estimated that about 85% of strokes are ischemic in origin. Reperfusion therapy in the acute phase of ischemic stroke with a recombinant human tissue plasminogen activator is effective, but some factors influence the success of this treatment. OBJECTIVE: The aim of this study was to evaluate clinical aspects and possible determinants for reperfusion after venous thrombolysis. METHODS: This is a retrospective, cross-sectional, observational study based on a review of hospital records of inpatients diagnosed with ischemic stroke treated with intravenous thrombolysis, the main outcome being reperfusion or not. RESULTS: Data from this study revealed a predominance of females in the group of reperfused patients and males in the non-reperfused group, both maintaining moderate severity on the National Institutes of Health Stroke Scale and admission without statistical significance (p>0.18). In addition, the mean admission severity score was 13.2 for the group of reperfused patients and 14.2 for those not reperfused, and the mean ejection fraction of both groups was within normal functionality, with a mean of 0.50 for reperfused patients and 0.62 for non-reperfused patients. CONCLUSION: We found an association between successful venous chemical thrombolysis reperfusion and lower mortality in patients with acute stroke.

A mudança de paradigma no tratamento do tromboembolismo venoso grave / The paradigm shift in treatment of severe venous thromboembolism

Resumo A embolia pulmonar (EP) é a terceira maior causa de morte cardiovascular e a principal de morte evitável intra-hospitalar no mundo. O conceito PERT® (do inglês, pulmonary embolism response team) envolve seu diagnóstico e tratamento precoce e multidisciplinar. A trombose venosa profunda (TVP) é a sua causa inicial na maioria dos casos e é responsável por complicações como a recidiva tromboembólica, a síndrome pós-trombótica e a hipertensão pulmonar tromboembólica crônica. Uma abordagem inicial semelhante ao PERT nos casos de TVP ilíaco-femoral grave pode reduzir não apenas o risco imediato de EP e morte, mas também suas sequelas tardias. Novas técnicas percutâneas e aparatos de trombectomia mecânica para o tromboembolismo venoso (TEV) vêm demonstrando resultados clínicos encorajadores. Propomos o desenvolvimento de um conceito ampliado de resposta rápida ao TEV, que envolve não apenas a EP (PERT®) mas também os casos graves de TVP: o time de resposta rápida para o TEV (TRETEV®), ou do inglês Venous Thromboembolism Response Team (VTERT®).

Abstract Pulmonary embolism (PE) is the third leading cause of cardiovascular death and the main cause of preventable in-hospital death in the world. The PERT® (Pulmonary Embolism Response Team) concept involves multidisciplinary diagnosis and immediate treatment. Deep venous thrombosis (DVT) is the initial cause of most cases of PE and is responsible for complications such as chronic thromboembolic recurrence, postthrombotic syndrome, and chronic thromboembolic pulmonary hypertension. An aggressive approach to severe cases of iliofemoral DVT similar to the PERT® system can not only reduce the immediate risk of PE and death but can also reduce later sequelae. New percutaneous techniques and mechanical thrombectomy devices for venous thromboembolism (VTE) have shown encouraging clinical results. We propose the development of an expanded concept of rapid response to VTE, which involves not only PE (PERT®) but also severe cases of DVT: the Venous Thromboembolism Response Team (VTERT®).

Real-world setting comparison of bridging therapy versus direct mechanical thrombectomy for acute ischemic stroke: A meta-analysis

Abstract Background and purpose Intravenous Thrombolysis (IVT) prior to Mechanical Thrombectomy (MT) for Acute Ischaemic Stroke (AIS) due to Large-Vessel Occlusion (LVO) remains controversial. Therefore, the authors performed a meta-analysis of the available real-world evidence focusing on the efficacy and safety of Bridging Therapy (BT) compared with direct MT in patients with AIS due to LVO. Methods Four databases were searched until 01 February 2023. Retrospective and prospective studies from nationwide or health organization registry databases that compared the clinical outcomes of BT and direct MT were included. Odds Ratios (ORs) and 95 % Confidence Intervals (CIs) for efficacy and safety outcomes were pooled using a random-effects model. Results Of the 12 studies, 86,695 patients were included. In patients with AIS due to LVO, BT group was associated with higher odds of achieving excellent functional outcome (modified Rankin Scale score 0-1) at 90 days (OR = 1.48, 95 % CI 1.25-1.75), favorable discharge disposition (to the home with or without services) (OR = 1.33, 95 % CI 1.29-1.38), and decreased mortality at 90 days (OR = 0.62, 95 % CI 0.56-0.70), as compared with the direct MT group. In addition, the risk of symptomatic intracranial hemorrhage did not increase significantly in the BT group. Conclusion The present meta-analysis indicates that BT was associated with favorable outcomes in patients with AIS due to LVO. These findings support the current practice in a real-world setting and strengthen their validity. For patients eligible for both IVT and MT, BT remains the standard treatment until more data are available.

Accidente cerebrovascular isquemico arterial pediatrico / Arterial ischemic stroke in childhood

Resumen A pesar de los avances en la identificación y reco nocimiento de factores de riesgo del accidente cerebro vascular (ACV) isquémico arterial pediátrico hay escasos avances en el tratamiento hiperagudo. Los factores de riesgo más frecuentes son las arteriopatías, cardiopatías y trombofilias. La confirmación temprana con estudios neurorra diológicos es clave para considerar las terapias de re perfusión, que tienen evidencia limitada en pediatría con buen perfil de seguridad. Existe consenso en la utilización de anticoagulación en patología cardioem bólica, enfermedades protrombóticas y antiagregación en arteriopatías. El desafío futuro será lograr una coordinación entre servicios prehospitalarios y centros especializados en ACV, para mejor manejo terapéutico en etapa hiperaguda disminuyendo su morbimortalidad.

Abstract Despite advances in the identification and recogni tion of risk factors for pediatric arterial ischemic stroke, little progress has been made in hyperacute treatment. The most frequent risk factors are arteriopathies, car diopathies, and thrombophilia. Early confirmation with neuroradiological studies is key to consider reperfusion therapies, which have limited evidence in pediatrics but a good safety profile. There is consensus on the use of anticoagulation in cardio-embolic and prothrombotic diseases, and anti platelet therapy in arteriopathies. The future challenge is to improve coordination between prehospital services and specialized stroke centers to improve therapeutic management in the hyperacute stage and reduce morbidity and mortality.

No reflow phenomenon in CAD patients after percutaneous coronary intervention: A prospective hospital based observational study

The present study assessed incidence, risk factors, in-hospital and short-term outcomes associated with no-reflow in patients undergoing percutaneous coronary intervention (PCI) in STEMI, NSTEMI, unstable angina and stable angina. Out of 449 patients, 42 (9.3%) developed no-reflow. Hypertension, dyslipidemia, obesity and smoking were significant risk factors. There was significant association of no-reflow with left main disease, multiple stents, target lesion length_x0001_ 20 mm and higher thrombus grade. Interestingly, 93 patients (23.4%) of normal flow had myocardial perfusion grade (MPG) of 0/1 with mortality in 9 (10%) patients. No-reflow is associated with poor in-hospital and short-term outcomes with higher incidence of death, cardiogenic shock, heart failure and MACE. Knowledge of risk factors of no-reflow portends a more meticulous approach to improve final outcomes. MPG could be better predictor of outcomes in these patients.

Why do some patients with acute ischemic stroke fail to improve after intravenous thrombolytic therapy? A case-control study / Por que alguns pacientes com acidente vascular cerebral isquêmico agudo após terapia trombolítica endovenosa não melhoram? Um estudo caso-controle

Introdução: a terapia trombolítica é a principal medida salvadora adotada em vítimas de acidente vascular cerebral isquêmico (AVCI), adequada para a maioria delas. Entretanto, alguns pacientes não apresentam evolução clínica, piorando o prognóstico, o que constitui uma lacuna científica essencial. Objetivo: analisar os determinantes da não melhora clínica em pacientes com AVC em uso de trombolíticos rt-PA.Método: estudo observacional retrospectivo caso-controle, realizado de 2014 a 2017 por meio de busca ativa de prontuários de pacientes com AVC submetidos à terapia trombolítica em um hospital de referência no Ceará. A falência clínica foi caracterizada como ausência de redução no National Institutes of Health Stroke Scale-Score (NIHSS).Resultados: um total de 139 pacientes incluídos no estudo em uma única unidade de AVC. A média de idade foi de 66,14 anos (variando de 34 a 95). O seguimento de 24 horas foi completado em 100% dos pacientes. Resultado favorável 24 horas pós-trombólise foi observado em 113 pacientes (81,29%), e não houve melhora clínica em 26 (18,7%). A transformação hemorrágica pós-trombólise foi um forte preditor de não melhora (p=0,004), e diabetes foi o principal fator de risco modificável encontrado (p=0,040).Conclusão: diabetes e transformação hemorrágica após trombólise foram identificados como fatores de risco para não melhora clínica em pacientes com AVC agudo submetidos à terapia trombolítica.

Introduction: thrombolytic therapy is the primary saving measure adopted in ischemic cerebrovascular accident (ICVA) victims, adequate for most of them. However, some patients do not show clinical progress, worsening the prognosis, which constitutes an essential scientific gap.Objective: to analyze the determinants of clinical non-improvement in stroke patients who used rt-PA thrombolytic agentes.Methods: retrospective observational case-control study, carried out from 2014 to 2017 through an active search of medical records of CVA patients undergoing thrombolytic therapy in a reference hospital in Ceará. Clinical failure was characterized as no reduction in the National Institutes of Health Stroke Scale-Score (NIHSS).Results: a total of 139 patients enrolled in the study in a single CVA unit. The mean age was 66.14 years (range 34 to 95). The 24-hour follow-up was completed in 100% of patients. A favorable result 24 hours post-thrombolysis was observed in 113 patients (81.29%), and there was no clinical improvement in 26 (18.7%). Post-thrombolysis hemorrhagic transformation was a strong predictor of no improvement (p=0.004), and diabetes was the main modifiable risk factor found (p=0.040).Conclusion: diabetes and hemorrhagic transformation after thrombolysis were identified as risk factors for clinical non-improvement in patients with acute stroke undergoing thrombolytic therapy.

Tendencias del síndrome coronario agudo en el Hospital Universitario Clínico Quirúrgico Comandante Faustino Pérez Hernández

Introducción: los síndromes coronarios agudos representan la forma aguda de la cardiopatía isquémica. Esta constituye, en Cuba, la primera causa de muerte en los últimos años. La provincia de Matanzas muestra un comportamiento similar. Objetivo: evaluar las tendencias de morbilidad y letalidad de los pacientes con síndrome coronario agudo en un período de cinco años. Materiales y métodos: se realizó un estudio descriptivo retrospectivo de corte transversal, con 734 pacientes ingresados con síndrome coronario agudo en la Unidad de Cuidados Intensivos Emergentes del Hospital Universitario Clínico Quirúrgico Comandante Faustino Pérez Hernández, de Matanzas, entre enero de 2016 y diciembre de 2020. Se caracterizaron los pacientes según variables clínicas. Los datos se extrajeron de las historias clínicas. Se aplicó el test Chi cuadrado. Resultados: hubo una disminución progresiva y continua del total de pacientes con síndrome coronario agudo en los cinco años estudiados. Sobresalió el sexo masculino, con un 53,67 % (p < 0,02). El grupo etario más afectado fue el de 60 a 69 años. El síndrome coronario agudo sin elevación del segmento ST prevaleció en cuatro de los años analizados. Preponderó la instauración del tratamiento trombolítico en el 78,75 % de los pacientes con síndrome coronario agudo con elevación del ST. El total de fallecidos decreció en el período estudiado. Se demostró la importancia de la aplicación de la trombolisis. Conclusiones: en el quinquenio estudiado, disminuyó gradualmente el total de pacientes con diagnóstico de síndrome coronario agudo, y la letalidad por esta causa, en la Unidad de Cuidados Intensivos Emergentes del Hospital Universitario Clínico Quirúrgico Comandante Faustino Pérez Hernández, de Matanzas.

Introduction: acute coronary syndromes represent the acute form of ischemic heart disease. In Cuba, it is the first cause of death in recent years. The province of Matanzas shows similar behavior. Objective: to evaluate morbidity and lethality tendencies of the patients with acute coronary syndrome in a period of five years. Materials and methods: a descriptive, retrospective, cross-sectional study was carried out with 734 patients admitted with acute coronary syndrome in the Emergency Intensive Care Unit of the Clinical Surgical University Hospital Comandante Faustino Perez, of Matanzas, between January 2016 and December 2020. The patients were characterized according to clinical variables. The data were extracted from clinical records. The Chi-square test was applied. Results: there was a progressive and continuous decrease of the total of patients with acute coronary syndrome in the studied five years. Male gender stood up with 53.67% (p < 0, 02). The most affected age group was the 60-69 years one. The acute coronary syndrome without ST segment elevation prevailed in four of the analyzed years. The establishment of the thrombolytic treatment prevailed in 78.75% of the patients with ST segment elevated acute coronary syndrome. The total of deaths decreased in the studied period. The importance of thrombolysis application was demonstrated. Conclusions: the total of patients with diagnosis of acute coronary syndrome and lethality due to this cause gradually decreased in the studied five-year period in the Emergency Intensive Care Unit of the Clinical Surgical Hospital Comandante Faustino Perez Hernandez, of Matanzas.

Experimental study on ultrasound/near-infrared dual-mode imaging and thrombolysis in vitro of phase-change mesoporous silicon nanoprobe / 中华超声影像学杂志

Objective:To explore the potential of thrombus-targeted nanoprobes for ultrasound/near-infrared bimodal imaging and their synergistic therapeutic effects on thrombosis in vitro.Methods:Nanoprobes loaded with arginine-glycine-aspartate peptide (RGD), perfluoropentane (PFP) and indocyanine green (ICG) were prepared by ultrasonic vibration and carbodiimide method with mesoporous silica nanoparticle (MSN) as the carrier. The probe morphology was observed by scanning and transmission electron microscopy. The loading of RGD and ICG was detected by Bicinchoninic Acid Assay (BCA) and UV-Visible-NIR spectroscopy respectively. The imaging performance and photothermal response of the nanoprobe under near infrared light (NIR) irradiation were studied in vitro. Its biological safety was tested by cytotoxicity test and hemolysis test. The phase transformation was studied under ultrasound and NIR irradiation. The nanoprobe was incubated with fresh arterial thrombus, and its target-seeking ability was observed by frozen section. Ultrasound and NIR irradiation were used to evaluate its thrombolytic ability by the weight changes of thrombus before and after irradiation.Results:The prepared nanoprobe had regular morphology and uniform size. The particle diameter was (156.83±5.05)nm, and the surface potential was (11.47±0.25)mV. The RGD coupling rate was (77.67±4.50)%, which could mediate the targeting of nanoprobe to fresh extracorporeal arterial thrombus. UV-Visible-NIR spectroscopy confirmed the successful loading of ICG, and its encapsulation rate was (80.47±0.05)%. After ultrasound and NIR irradiation, the nanoprobe could undergo acoustically induced phase transition, thermally induced phase transition and enhance the ultrasonic development effect. With the increase of the concentration of the nanoprobe solution, the NIR signal gradually increased, and the temperature rose in a concentration-dependent and intensity-dependent manner after NIR irradiation. The cytotoxicity test and hemolysis test showed that the nanoprobe had good biological safety, and it could play a thrombolytic role under the combined irradiation of ultrasound and NIR, and the weight of thrombus was significantly reduced after the treatment ( P<0.01). Conclusions:In this study, the nanoprobe (RGD/ICG/PFP@MSN) were successfully prepared possesses excellent dual mode imaging capabilities of ultrasound and NIR, excellent phase transition ability and photothermal conversion efficiency, as well as efficient targeted penetration and therapeutic effects against thrombosis. This study provides strong in vitro experimental evidence and new strategies for the integration of diagnosis and treatment of thrombotic diseases under the cooperation of ultrasound and NIR.

Efficacy of mechanical thrombectomy in acute ischemic stroke with large vessel occlusion and analysis of related factors affecting its prognosis / 中华老年医学杂志

Objective:To compare the effectiveness of intravenous thrombolysis(IVT)alone versus mechanical thrombectomy(MT)in treating acute large vessel occlusive stroke(AIS-LVO).Amd to analyze the factors that are associated with the prognosis of MT.Methods:A total of 197 patients with acute ischemic stroke with large vessel occlusion(AIS-LVO)who received intravenous thrombolysis(IVT)and/or mechanical thrombectomy(MT)at the Stroke Center of the Second Hospital of Dalian Medical University from April 2016 to July 2021 were included in this retrospective analysis.Baseline data, clinical data, and 90-day Modified Rankin Scale(mRS)scores were collected for each group.The efficacy and risk of IVT alone and MT were compared using univariate and multivariate logistic regression analysis.Additionally, factors influencing the prognosis of MT were identified.Results:A total of 197 patients who met the inclusion criteria were included in this study.Out of these, 62 patients were in the IVT alone group and 135 patients were in the MT group.The results of the univariate analysis showed that the MT group had lower admission systolic blood pressure(147±23 vs.158±27 mmHg, P=0.003), higher baseline NIHSS score[15(12, 19) vs.12(8, 16), P=0.003], and there were also differences in vascular occlusion between the two groups( χ2=15.504, P=0.004).Specifically, the middle cerebral artery and basilar artery occlusion were higher in the MT group.In terms of outcome, the MT group had a higher percentage of good outcomes at 90 days[53(39%) vs.13(21%), χ2=6.381, P=0.012], and there was no significant difference in symptomatic intracranial hemorrhage(sICH)and mortality within 90 days.Among the 135 patients who underwent MT, 53 patients were classified as having a good prognosis, while 82 patients were classified as having a poor prognosis.Multivariate analysis revealed that age( OR=1.078, 95% CI: 1.025-1.133, P=0.003), neutrophil to lymphocyte ratio(NLR)( OR=1.164, 95% CI: 1.013-1.338, P=0.032), time from onset to recanalization( OR=1.004, 95% CI: 1.000-1.007, P=0.049), sICH( OR=15.585, 95% CI: 1.397-173.865, P=0.026), ASPECTS/pc-ASPECTS score( OR=0.524, 95% CI: 0.017-0.582, P=0.024), and good recanalization( OR=0.099, 95% CI: 1.718-59.046, P=0.010)were identified as independent prognostic factors.The results indicate that percutaneous transluminal angioplasty, stent implantation, and the use of tirofiban and butylphthalide did not significantly affect the prognosis of the MT group. Conclusions:The use of mechanical thrombectomy(MT)in patients with acute ischemic stroke due to large vessel occlusion(AIS-LVO)is more effective than intravenous thrombolysis(IVT)alone and has a similar safety profile.However, there are certain factors that can influence the prognosis of MT treatment.Older age, higher neutrophil-to-lymphocyte ratio(NLR), longer time from symptom onset to recanalization, and the occurrence of postoperative symptomatic intracranial hemorrhage(sICH)were identified as independent predictors of poor prognosis in MT treatment.On the other hand, a higher ASPECTS/pc-ASPECTS score and successful recanalization were found to be protective factors associated with a favorable prognosis in MT treatment.

Relationship between the levels of thrombo-inflammatory factors and the prognosis of intravenous thrombolysis in elderly patients with acute cerebral infarction / 中风与神经疾病杂志

@#Objective To analyze the relationship between the levels of thrombo-inflammatory factors and the prognosis of intravenous thrombolysis in elderly patients with acute cerebral infarction （ACI）. Methods The 197 elderly patients with ACI admitted to our hospital from December 2020 to January 2023 were selected as study subjects. According to the prognosis of patients after intravenous thrombolysis， patients were divided into a good prognosis group （n=143） and a poor prognosis group （n=54）. The clinical data of patients in the two groups were compared. Multivariate analysis was used to identify independent risk predictors of poor prognosis in patients undergoing intravenous thrombolysis. The predictive value of thrombo-inflammatory factor levels for poor prognosis of intravenous thrombolysis in elderly patients with ACI was evaluated. A restricted cubic spline model was used to analyze the dose-response relationship between the levels of thrombo-inflammatory factors and the poor prognosis of intravenous thrombolysis in elderly patients with ACI. A nomograph model was constructed， and the effectiveness of the model was verified. Bootstrap resampling was used for external verification. Results Multivariate analysis results showed that the time from onset to receiving thrombolysis， pre-treatment National Institutes of Health Stroke Scale score，Trial of ORG 10 172 in Acute Stroke Treatment typing， monocyte chemoattractant protein-1，t-PA， sCD40L， and P-selectin levels were independent influencing factors for poor prognosis of patients undergoing intravenous thrombolysis （P<0.05）. The levels of thrombo-inflammatory factors had a certain predictive value for poor prognosis of patients undergoing intravenous thrombolysis， and the value of combined detection was higher than that of individual detection（area under the curve=820）. The dose-response relationship analysis results showed that when t-PA≤60 μg/L，the risk of poor prognosis increased with increasing t-PA level （HR 1.005，95%CI 1.003-1.007， P<0.001）；when t-PA>60 μg/L，the risk of poor prognosis almost no longer increased with increasing t-PA level （HR 1.003， 95%CI 1.001-1.006，P=0.614）. The C-index of the nomograph model was 0.814 and 0.823， and the area under the receiver operating characteristic curve was 0.861 and 0.843， indicating that the prediction model had good discrimination. The calibration curve fitted well， indicating high accuracy. The threshold probability of the clinical decision curve ranged from 0.03 to 0.95 and from 0.03 to 0.97， with a high net benefit value， indicating that the method was effective， safe， reliable， and practical. Conclusion The levels of thrombo-inflammatory factors have a certain impact on the prognosis of intravenous thrombolysis in elderly patients with ACI， and have a certain predictive value. The combined detection of various factors shows a higher predictive value.

Association between the overall burden of cerebral small vascular disease and the hemorrhagic transformation of acute ischemic stroke after intravenous thrombolysis / 中风与神经疾病杂志

@#Objective To investigate the association between the overall burden of cerebral small vascular disease （CSVD） and the hemorrhagic transformation of acute ischemic stroke after intravenous thrombolysis. Methods A retrospective analysis was performed for 268 patients with acute ischemic stroke who received rt-PA intravenous thrombolysis in our hospital from January 2019 to October 2022, and according to the presence or absence of hemorrhagic transformation after thrombolysis, they were divided into hemorrhagic transformation group and non-hemorrhagic transformation group. Related data were collected for both groups, including demographic information （sex, age）, smoking history, medical history （hypertension, diabetes, hyperlipidemia, coronary heart disease, atrial fibrillation, and ischemic stroke）, and clinical data after onset, such as onset-to-treatment time （OTT）, systolic pressure/diastolic pressure/blood glucose at baseline, laboratory findings within 24 hours after onset [fasting blood glucose, glycated hemoglobin, homocysteine, creatinine, triglyceride, total cholesterol, high-density lipoprotein cholesterol （HDL-C）, low-density lipoprotein cholesterol （LDL-C）, uric acid, platelet, prothrombin time （PT）, international normalized ratio （INR）, fibrinogen, fibrinogen, C-reactive protein （CRP）], location of infarction （anterior circulation or posterior circulation）, TOAST typing, and the overall burden of CSVD （mild, moderate or severe）. The two groups were compared in terms of baseline data, clinical data, and CSVD score, and the logistic regression analysis was used to investigate the association between the overall burden of CSVD and hemorrhagic transformation after intravenous thrombolysis. Results A total of 268 patients with acute ischemic stroke who received intravenous thrombolysis were enrolled, with an age of 23-97 years （mean 65.5 years）, and male patients accounted for 70.5% （189/268）. The baseline NIHSS score was 7.5 （0, 27） points, and OTT was 151.2 （20, 270） minutes. Among these patients, 138 （51.4%） had moderate to severe WMH, 193 （72.0%） had lacunar infarction, 56（20.8%） had cerebral microbleeds,and 106（39.5%） had perivascular spaces. There were 115 patients（42.9%） in the mild CSVD group,65（24.2%） in the moderate CSVD group,and 88 （32.8%） in the severe CSVD group. There were 29 patients with hemorrhagic transformation （10.3%）. Atrial fibrillation （odds ratio OR=5.628,95%CI 1.862-17.009,P=0.002）,cerebral microbleeds （OR=4.062,95%CI 1.437-11.485,P=0.008）, and baseline NIHSS score （OR=1.182,95%CI 1.082-1.292,P<0.001） were independent risk factors for hemorrhagic transformation after thrombolysis, and with mild CSVD as the reference, severe CSVD（OR=0.694,95%CI 1.458-9.360,P=0.006） was independently associated with hemorrhagic transformation. Conclusion The overall burden of CSVD in patients with acute ischemic stroke is closely associated with hemorrhagic transformation after intravenous thrombolysis, and severe CSVD is an independent risk factor for hemorrhagic transformation after intravenous thrombolysis.

Research advances in thrombus histology of acute ischemic stroke and its influence on clinical intervention / 中风与神经疾病杂志

@#Acute ischemic stroke is a common cerebrovascular disease in clinical practice and refers to brain dysfunction due to the obstruction of intracranial arteries by thrombus，and it has the features of a high incidence rate，a high disability rate，a high recurrence rate，and various complications. At present，the methods for clinical intervention mainly include thrombolysis and thrombectomy. Studies have shown that the composition and structure of thrombus affect the efficacy of thrombolytic therapy and thrombectomy. This article reviews related studies on the histology of cerebral thrombus and its effect on thrombolysis and thrombectomy，so as to provide a reference for the selection of treatment regimens in clinical practice.