摘要
Objetivo: Describir morbimortalidad asociada al uso de prótesis colorrectales (PC) e identificar factores asociados a sus complicaciones durante los años 2007 a 2022 en Clínica INDISA. Material y Método: Estudio transversal retrospectivo basado en registro clínico. Resultados: Se instalaron 49 PC con un 100% de éxito de desobstrucción. El 87,8% en colon izquierdo. La etiología principal fue la patología maligna 91,8% y el 85,7% de ellos fueron primarios colorrectales. Se instalaron 34 como tratamiento paliativo (TP), 12 como puente a cirugía electiva (PCE) y 3 por patología benigna. La tasa de complicaciones fue de 26,5% (7 estenosis, 4 perforaciones y 2 migraciones). La mortalidad asociada fue de 4,1% (2 pacientes). El grupo de complicados fue más joven, con etapas oncológicas más avanzadas y con estenosis en rectosigmoides(p < 0,005). Los menores de 50 años tuvieron 5 veces más riesgo de alguna complicación (OR = 5,0;IC95%:1,09-23,0; p = 0,039). Discusión: El uso de PC tiene baja morbimortalidad. Su uso principal es como TP o PCE en obstrucción colorrectal maligna, con alta tasa de desobstrucción. Está asociado con menor morbilidad que la cirugía de urgencia, menor tasa de ostomía y mayor cosecha ganglionar. La instalación como puente se asocia además a mayor tasa de anastomosis primaria. Nuestra serie mostró mayor tasa de complicación en aquellos con tumores avanzados y más jóvenes. Conclusión: El uso de PC es seguro y con baja morbimortalidad. La principal indicación es en neoplasia colorrectal obstructiva como TP. Tienen mayor riesgo de complicación los pacientes jóvenes y los tumores colorrectales avanzados con ganglios peri tumorales.
Objective: To describe morbidity and mortality associated with colorectal prostheses (CP) and identify factors associated with their complications during the 2007 to 2022 at INDISA Clinic. Material and Method: Retrospective cross-sectional study based on clinical registry. Results: 49 CPs were installed with 100% clearing success. 87.8% in left colon. The main etiology was malignant 91.8% and 85.7% were primary colorectal. 34 were installed with palliative intention, 12 as a bridge to elective surgery (BTS) and 3 for benign pathology. There were 13 (26.5%) patients with adverse effects (7 strictures, 4 perforations and 2 migrations). Associated mortality was 4.1% (2 patients). The complicated group was younger, with more advanced oncological stages and rectosigmoid stenosis (p < 0.005). Those under 50 years of age had 5 times higher risk of some complication (OR = 5.0; 95% CI: 1.09-23.0; p = 0.039). Discussion: The use of CPs has low short-term morbidity and mortality. Its main use is as palliative treatment or BTS in malignant colorectal obstruction. It's a high clearance rate. It is associated with less morbidity than emergency surgery, a lower ostomy rate, and a higher lymph node harvest. Installation as a bridge is also associated with a higher rate of primary anastomosis. Our group showed a higher complication rate in those with advanced and younger tumors. Conclusion: The use of CPs is safe, with low morbidity and mortality. The main indication is in obstructive colorectal neoplasia as palliative treatment. Young patients and advanced colorectal tumors with peritumoral nodes have a higher risk of complications.
摘要
OBJECTIVE To assess the efficacy of bioabsorbable steroid-releasing sinus stents for improving surgical outcomes and subjective symptoms when placed in the bilateral frontal sinus opening(FSO)following full functional endoscopic sinus surgery in patients with chronic rhinosinusitis with nasal polyps(CRSwNP).METHODS CRSwNP patients who had under full functional endoscopic sinus surgery with complete data of nasal endoscopy and sinus computed tomography data were identified and included in the study.The patients were divided into a control group consisting of patients receiving only full functional endoscopic sinus surgery(n=92)and a stent group consisting of patients receiving full functional endoscopic sinus surgery combined with placement of steroid implants in both FSO(n=38).The visual analogue scale(VAS)subjective symptom scores and surgical outcomes were compared preoperatively,and on postoperative day(PD30 and PD90)between the two groups.RESULTS Compared to baseline,the overall symptom VAS scores of patients after operation decreased significantly in both groups(P<0.05),and the degree of improvement of overall symptoms in the stent group was significantly better than in the control group(P<0.05).On PD30,the proportion of patients requiring postoperative interventions for bilateral FSO was reduced by 42.3%in the stent group,and was significantly lower than in the control group(P<0.05).Compared to the control group,the proportion of patients needing postoperative intervention in both ethmoid sinus on the stent group decreased by 17.7%(P>0.05).The results at PD90 were consistent with those at PD30.CONCLUSION Full functional endoscopic sinus surgery in combination with bilateral frontal sinus stent implantation is better than full functional endoscopic sinus surgery alone.
摘要
Objective To investigate the clinical effect of rapamycin-eluting vertebral artery stent in the treatment of severe ostial vertebral artery stenosis(OV AS),and to analyze the incidence of postoperative in-stent restenosis(ISR).Methods A total of 96 patients with severe OVAS,who received stenting angioplasty at authors'hospital between November 2020 and May 2022,were retrospectively collected.The patients were divided into the observation group(n=48)and the control group(n=48).For the patients of the observation group implantation of rapamycin-eluting vertebral artery stent was carried out,while for the patients of the control group implantation of peripheral balloon dilatation bare metal stent(BMS)was performed.The perioperative basic data,the incidence of complications during follow-up period,and the postoperative incidence of ISR were compared between the two groups.Results Successful stent implantation was achieved in all patients of both groups.During perioperative period no complications such as transient ischemia attack(TIA),dropping-off or fracture of the stent,vertebral artery or stent-related stroke occurred.No statistically significant differences in the length and the diameter of the implanted stents,in the preoperative vertebral artery stenosis ratio,and in the postoperative residual stenosis ratio existed between the two groups(all P＞0.05).In both groups,the postoperative residual stenosis ratio was＜20％.The patients were followed up for a mean period of(12.33±5.82)months(range of 6-18 months),the incidence of postoperative vertebral artery or stent-related stroke in the observation group and the control group was 0％and 4.17％respectively,the difference between the two groups was not statistically significant(P＞0.05).The improvement of clinical symptoms such as dizziness,vertigo,etc.was observed in 47 patients of the observation group and in 45 patients of the control group,and no recurrent posterior circulation TIA or stent-related thrombotic event occurred.The incidence of postoperative restenosis in the observation group was 10.42％,which was significantly lower than 29.17％in the control group(P＜0.05).Conclusion Rapamycin-eluting vertebral artery stent can safely and effectively treat severe OVAS and reduce the incidence of postoperative ISR.(J Intervent Radiol,2024,33:275-279)
摘要
Objective To evaluate the long-term efficacy of transjugular intrahepatic portosystemic shunt(TIPS)with bare stents and Fluency covered stents in the treatment of portal hypertension,and to discuss its clinical value.Methods The clinical data of 29 patients with intractable ascites or esophagogastric fundus varices rupture and hemorrhage caused by cirrhotic portal hypertension,who received TIPS with bare stents and covered stents at the First Affiliated Hospital of Xinjiang Medical University of China(25 patients)and the Lishui Municipal Central Hospital of China(4 patients)between August 2012 and December 2017,were retrospectively analyzed.The patients were regularly followed up to check the survival status.The postoperative cumulative shunt patency rate and cumulative survival rate of the patients were analyzed by Kaplan-Meier method.Results The technical success rate of TIPS was 100％.The mean portal vein pressure was decreased from preoperative(40.21±3.24)cmH2O to postoperative(24.55±3.55)cmH2O(P＜0.05).The patients were followed up for 5.1-10.5 years.The postoperative 1-,3-,5-,7-year primary cumulative patency rates of the shunt were 89.7％,75.9％,75.9％ and 52.5％,respectively.The postoperative 5-,7-,9-and 10-year cumulative survival rates were 100％,66.9％,66.9％ and 33.4％,respectively.The incidence of hepatic encephalopathy was 13.8％(4/29).Conclusion Using bare stents combined with Fluency covered stents for TIPS is clinically safe and effective in the treatment of portal hypertension.This technique carries higher long-term shunt patency rate and low incidence of hepatic encephalopathy.Therefore,it can be used as a substitute for Viatorr stent when necessary.(J Intervent Radiol,2024,33:295-299)
摘要
Superior vena cava syndrome(SVCS)is a group of clinical syndromes caused by obstruction of the superior vena cava and its major branches from various causes.Pulmonary artery stenosis(PS)is a complication of lung cancer or mediastinal tumours.SVCS combined with PS due to pulmonary metastases from bladder cancer is extremely rare and has not been reported in the literature.Here we reported an old male patient with pulmonary metastases from bladder cancer presenting with swelling of the head,neck and both upper limbs.SVCS combined with PS was clarified by pulmonary artery computed tomography angiography(CTA)and digital subtraction angiography(DSA).Endovascular stenting was used to treat SVCS.Angiography also showed that PS had not caused pulmonary hypertension and did not need to be treated.The swelling of the patient's head,neck and upper limbs was gradually reduced after the procedure.
摘要
Objective To explore the clinical application of individualized coil embolization in the interventional treatment of renal artery aneurysm(RAA).Methods Data of 23 patients with RAA treated by individualized coil embolization were analyzed.There were 27 RAAs,in which narrow-necked RAAs were treated with coil embolization and wide-necked RAAs were treated with stent-assisted coil embolization.The efficacy of the two embolization methods were analyzed and the changes of renal function and symptoms were observed.Results A total of 27 RAAs in 23 patients were successfully embolized at one time,including 23 narrow-necked RAAs in 19 cases treated with coil embolization and 4 wide-necked RAAs in 4 patients treated with stent-assisted coil embolization.The embolization effect of 20 cases(86.96%)reached Raymond grade Ⅰ,and 3 cases(13.04%)reached gradeⅡ.Postoperative computed tomography angiography(CTA)showed that all parent arteries were patent,the RAA was not visualized,and there was no renal infarction.There was no statistical difference in creatinine values before operation,1 month,6 months and 1 year after operation(P>0.05).In the 12 patients with hypertension,there were statistically significant differences in blood pressure at 1 year after operation compared with preoperative,1 month,and 6 months after operation(P<0.05).The symptoms of low back pain and hematuria disappeared after operation.Conclusion Individualized coil embolization for RAA is safe,effective and worthy of clinical promotion.
摘要
Objective To observe and compare in-hospital and 1-year survival and prognosis of patients with 4b acute myocardial infarction(AMI)caused by early and late stent thrombosis(ST).Methods A total of 302 patients with 4b acute myocardial infarction caused by ST were enrolled in this study from January 2015 to February 2018.ST patients were confirmed by coronary angiography.These patients were divided into two groups:the early ST group(n=26)and the late ST group(n=276)according to the time of ST occurrence.Endpoint events during hospitalization and one year of follow up were compared between the two groups of patients.The primary endpoint events included cardiac death and recurrent AMI.The secondary endpoint events included target lesion revascularization(TLR),re-stent thrombosis,heart failure and stroke.The incidence of no endpoint events was compared between two groups of patients by Kaplan and Meier survival analysis.Cox regression analysis was used to analyze risk factors for endpoint events in patients with type 4b AMI.Results There was no significant difference in the incidence of the primary endpoint events during hospitalization between the two groups(7.7%vs.3.3%,P=0.243).The incidence of heart failure was higher in the early ST group than that of the late ST group(11.5%vs.1.4%,P=0.016).There was no significant difference in the incidence rates of other secondary endpoint events between the two groups(P＞0.05).After a mean follow-up of 1 year,the incidence rates of primary endpoint events and the secondary eendpoint events were higher in the early ST group(20.0%vs.5.9%,P＜0.05 and 36.0%vs.11.5%,P＜0.01)than that of the late ST group.Kaplan and Meier survival analysis showed that the 1-year cumulative incidences of non-primary(P= 0.022)and non-secondary events(P＜0.001)were lower in the early ST group than those of the late ST group.Cox regression analysis showed that hypertension and history of coronary artery bypass grafting were independent risk factors for primary endpoint events in patients with 4b AMI,and intraoperative implantation of intraaortic balloon pump(IABP)and shortening the time from stent thrombosis to balloon dilation(ST to B)were independent protective factor.Conclusion Early ST patients have similar in-hospital outcomes and poor long-term prognosis compared with late ST induced 4b type AMI patients.Intraoperative implantation of IABP and shortening of ST to B time may improve the prognosis of 4b type AMI patients.
摘要
BACKGROUND:Clinical use of vascular stents involves high medical costs,but it may also bring long-term benefits in reducing cardiovascular events and improving the quality of life in patients.Economics evaluation can help decision makers better understand the balance between the cost and benefit of treatment. OBJECTIVE:To analyze the related articles of health economics and discuss the hot spots in the study of the effect and problems of vascular stents in medical quality management. METHODS:The articles concerning health economics evaluation of vascular stents were retrieved from the core set of the Web of Science.The VOSviewer_1.6.19 software was used to make a visualization analysis of the annual publication volume,institutions,countries,keywords,etc.Finally,the research hot spots on the effects and problems of vascular stents were analyzed from the perspective of health economics and medical quality management. RESULTS AND CONCLUSION:(1)120 articles in English were finally included.In the past 10 years,the highest number of articles published in this field was in 2019,with 10 articles.The institution with the largest number of articles published was Harvard University in the United States with 20 articles,and the country with the largest number of articles published was the United States with 58 articles.(2)Keyword cluster analysis demonstrated that the cost-effectiveness analysis of bare metal stents and drug-eluting stents in coronary disease,the cost-effectiveness analysis of angioplasty stent intervention,and the effect of coronary stents in percutaneous coronary intervention are the research hot spots in the field of health economics evaluation of vascular stent research.(3)In the context of medical quality management,the paper further summarized the research hot spots on the therapeutic effect of vascular stents as follows:long-term effect of vascular stents,safety,drug release mechanism research,personalized therapy,restenosis problems,and stent insertion technology.(4)The results of highly cited literature analysis exhibited that drug-eluting stents release drugs to reduce the risk of vascular restenosis,and the restenosis rate is lower than that of bare metal stents,but the cost is usually higher.Biodegradable stents combine the advantages of bare metal stents and drug-eluting stents,that is,avoiding long-term stent existence and reducing the risk of restenosis,but their cost may be higher,and there may be some complications in the short term,and they are not widely used at present.(5)In addition to the direct stent cost,factors that need to be considered when comparing the cost-effectiveness of vascular stents include the risk and cost of stent re-intervention,the risk and cost of complications,the duration and cost of drug therapy,and the quality of life of patients.Therefore,while the initial cost of drug-eluting and biodegradable stents may be higher than bare metal stents,they may lead to better clinical outcomes in the long term,resulting in a more favorable cost effect.(6)Future research directions should focus on making personalized vascular stent treatment decisions,observing the long-term effect of stent treatment,the impact of the stent on patients'quality of life,formulating health policies,rational allocation of medical resources,and the establishment of long-term follow-up mechanisms.
摘要
Objective To explore the effects of intravenous thrombolysis combined with Solitaire FR stent thrombectomy on vascular recanalization,neurologic function and prognosis in patients with acute cerebral infarction(ACI)due to large artery occlusion(LAO).Methods A total of 172 patients with ACI-LAO treated in our department between October 2020 and March 2023 were retrospectively enrolled.According to treatment regimens,they were assigned into control group(86 cases,alteplase intravenous thrombolysis)and study group(86 cases,alteplase intravenous thrombolysis combined with Solitaire FR stent thrombectomy).Vascular recanalization,neurolog-ic function,cerebral perfusion and occurrence of adverse events were compared between the two groups.After 90 d of follow-up,their prognosis was evaluated with modified Rankin scale.Results There was no significant difference in success rate of vascular recanalization between the two group(P＞0.05),but complete recanalization rate was statistically higher in the study group than the control group(68.60％vs 50.00％,P＜0.05).The study group had obviously lower NHISS scores at 7 and 14 d after treatment,higher cerebral blood volume and cerebral blood flow,but shorter mean transit time when compared with the control group(P＜0.05,P＜0.01).No notable difference was observed in the total incidence of adverse events between them(P＞0.05).After 90 d of follow-up,the proportion of good prognosis was higher in the study group than the control group(80.23％vs 63.95％,P＜0.05).Conclusion Intravenous thrombolysis combined with Soli-taire FR stent thrombectomy shows better efficacy in ACI-LAO patients,with better vascular re-canalization and great improvements in neurologic function and prognosis.
摘要
Objective To explore the influencing factors for long-term poor prognosis of patients with acute ischemic stroke with large vessel occlusion(LVO-AIS)in the course of intravascular treatment.Methods A total of 123 LVO-AIS patients undergoing vascular recanalization in Department of Neurology of Tianmen First People's Hospital from January 2021 to December 2022 were consecutively recruited,and according to their modified Rankin Scale(mRS)score at 90 d after surgery,they were divided into good prognosis group(mRS≤2,n=58)and poor prognosis group(mRS＞2,n=65).Their general clinical data were compared between the two groups.Multi-variate logistic regression analysis was applied to identify the risk factors of poor prognosis in LVO-AIS patients.Results The good ratio of collateral circulation in good prognosis group was higher than that in poor prognosis group(94.83％vs 47.69％,P＜0.01).Multivariate logistic regression analysis showed that age(OR=1.092,95％CI:0.989-1.205,P=0.046),diabetes(OR=0.122,95％CI:0.026-0.561,P=0.007),symptomatic intracranial hemorrhage(OR=0.038,95％C I:0.002-0.656,P=0.024),and poor collateral circulation(OR=0.037,95％CI:0.007-0.196,P=0.000)were independent risk factors for poor prognosis in LVO-AIS patients after intravascular treatment.Conclusion For the LVO-AIS patients,those with advanced age,di-abetes,symptomatic intracranial hemorrhage and poor collateral circulation are prone to poor prognosis after intravascular treatment.
摘要
Objective To investigate the efficacy and safety of Rotarex mechanical thrombectomy combined with drug-coated balloon(DCB)dilatation for the treatment of in-stent restenosis(ISR)in femoropopliteal atherosclerotic occlusive disease.Methods A total of 53 patients with in-stent restenosis after stent implantation(9 covered stents and 44 bare stents)from March 2020 to March 2022 were retrospectively analyzed.All the cases were treated with Rotarex mechanical thrombectomy combined with DCB dilatation.Antiplatelet and anticoagulant therapy were used after operation.Results All the 53 patients had successful recanalization of the lower limb arteries.Imaging after Rotarex mechanical thrombectomy combined with DCB dilatation showed 3 cases of residual thrombus in the stent treated with indwelling thrombolytic catheters for thrombolysis,with follow-up angiography showing blood flow recovery,and 5 cases of embolism of the below-knee arteries intraoperatively,including 3 cases at the opening of the tibiofibular trunk artery,which were opened with 6F peripheral thrombus aspiration catheter until unobstructed blood flow,and 2 cases of proximal occlusion of the posterior tibial artery,which were opened with balloon dilatation.Three cases of residual stenosis>30%were treated with remedial stents placement.There were no postoperative complications related to the puncture point,cardiovascular or cerebrovascular accidents,or deaths.The ankle brachial index(ABI)was0.33±0.06 preoperatively and0.84±0.07 postoperatively at the time of discharge(t =-39.443,P<0.001).All the 53 cases completed 3-month follow-ups,52 cases completed 6-month follow-ups,and 49 cases completed 12-month follow-ups.The phaseⅠpatency rates were 100%(53/53)at 3 months,92%(48/52)at 6 months,and 84%(41/49)at12 months,postoperatively.Recurrence of lower limb ischemic symptoms happened in 2 cases,which were given DCB dilatation at 9 and 10 months postoperatively,respectively.The 12-month freedom from clinically-driven target vessel reintervention was 95.9%(47/49).There were 4 deaths(1 case of gastrointestinal hemorrhage,2 cases of COVID-19,and 1 case of unknown cause)and 3 cases of amputation beyond the ankle joint.Conclusion The Rotarex mechanical thrombectomy combined with DCB is safe and effective in treating ISR of the femoropopliteal artery with satisfactory patency and reintervention rates.
摘要
In recent years, endovascular treatment has emerged as the preferred approach for aortic aneurysms. From an anatomical perspective, the current focus of research remains on the reconstruction of iliac artery branches, multiple branches of visceral arteries, and branches of the aortic arch. Substantial clinical evidence has been accumulated in these areas. Simultaneously, future research is expected to explore the reconstruction of the aortic root involving coronary arteries openings and the inhibition of small arterial aneurysm progression through pharmacological means. This article aims to provide a review of significant research data in recent years related to the treatment of aortic aneurysms, offering insights and prospects for future research directions.
摘要
Objective:To evaluate the efficacy and safety of a gastric bypass stent system for weight loss and obesity-associated metabolic parameters.Methods:A sub-analysis of a multicenter randomized control trial was conducted on data of 14 obese patients who were implanted the gastric bypass stent system under endoscopy in Beijing Friendship Hospital, Capital Medical University from March 2021 to October 2022. The device was removed after 12 weeks and the patients were followed up for 36 weeks. Outcomes included changes in excess weight loss (EWL), total weight loss (TWL), insulin resistance, liver enzymes, lipids and uric acid at 12, 24 and 36 weeks, and the safety of the device.Results:Among the 14 patients, there were 9 males and 5 females, aged 34.3±7.4 years, with an initial body weight of 104.8±13.9 kg. Stents were removed in advance in 2 patients because of intolerable adverse reactions of the digestive tract. The remaining 12 patients completed follow-up, and their EWL was 34.4%±25.5% at 12 weeks, 39.1%±37.5% at 24 weeks, and 27.3%±40.8% at 36 weeks. TWL was 8.7%±6.2%, 10.1%±10.2% and 8.3%±13.8%, respectively. The levels of homeostasis model assessment of insulin resistance (HOMA-IR) at 12 weeks (4.81±3.71, P=0.022), 24 weeks (4.17±2.77, P=0.002) and 36 weeks (4.66±3.58, P=0.016) were statistically significant compared with baseline (7.03±3.59). The levels of alanine aminotransferase (ALT) were 48 (21-124) U/L, 39 (14-96) U/L, 27 (10-86) U/L and 32 (16-113) U/L at baseline, 12 weeks, 24 weeks and 36 weeks, respectively, and the changes of ALT were statistically significant at 24 weeks and 36 weeks ( P=0.009, P=0.026 compared with baseline). The levels of aspartate aminotransferase (AST) were 30 (20-62) U/L, 24 (15-72) U/L, 22 (11-56) U/L and 26 (13-74) U/L at baseline, 12 weeks, 24 weeks and 36 weeks, respectively, and the change of AST was significant at 24 weeks ( P=0.018 compared with baseline). However, the changes of uric acid and serum lipid were not statistically significant ( P>0.05). The only severe adverse event was esophageal mucosal laceration during the process of explantation, which was successfully treated with endoscopic clips. There was no device migration, acute pancreatitis or hepatic abscess. Conclusion:The gastric bypass stent system, relatively safe, has a good short-term weight loss effect and improves insulin resistance and liver enzymes.
摘要
Objective:To summarize the use of Castor stent graft in aortic diseases and to analyze their efficacy.Methods:The clinical data of patients with aortic diseases treated with Castor stent graft from November 2017 to August 2022 in Fujian Provincial Hospital were collected and divided into branched stent group and branched stent co-operative group according to the operation method, and the clinical data of both groups were summarized.Results:A total of 75 cases of aortic disease were treated with Castor stents, and finally 53 cases were classified as branched stent group and 22 cases as branched stent co-operative group. The operations in both groups were successful. The median operative time in the branched stent group was 120(100, 160)min, and the median postoperative hospital stay was 7.0(5.5, 10.5)days.There was no postoperative ischemic stroke, no spinal cord ischemia. One case of new aortic dissection occurred. During follow-up, there was one lost case and two deaths, and the rest did not have endoleak, branch stent stenosis, ischemic stroke or re-intervention. In the branched stent co-operative group, there was one postoperative ischemic stroke, one case of slight stenosis of the left subclavian artery stent during follow-up, the remaining cases had satisfactory postoperative outcomes.Conclusion:Castor stent graft is a safe and effective procedure in the treatment of aortic diseases. And Castor stent graft can be used in combination with other endovascular repair techniques in the treatment of complex aortic diseases, with safe and reliable postoperative outcomes.
摘要
Ureterosciatic hernia is a rare type of pelvic floor herniation with no typical symptoms. The resulting ureteral obstruction may lead to hydronephrosis and complications such as urinary tract infection and urosepsis.Fewer than 40 ureterosciatic hernia cases have been reported all over the world. Active surveillance, manual reduction, ureteral stenting and surgical repair are common treatment options. Among them, the safety and effectiveness of laparoscopic herniorrhaphy have been recognized. This article review the advances in the diagnosis and treatment of ureterosciatic hernia.
摘要
Objective:To investigate the application value of optical coherence tomography (OCT) and intravascular ultrasound (IVUS) in evaluating flow diverter (FD) apposition and endothelialization in aneurysm animal models, and analyze the effect of incomplete stent apposition (ISA) on aneurysm lumen healing and stent endothelialization.Methods:Lateral common carotid artery aneurysm models in swines were established by surgical method and then FD was implanted. Immediately after surgery, OCT and IVUS were used to evaluate the locations and degrees of ISA, and difference between these 2 methods in evaluating FD apposition was compared. DSA was performed at 12 weeks after surgery to evaluate the aneurysm occlusion (Kamran grading) and stent patency. OCT and IVUS were used again to observe the stent endothelial situation; by comparing with histopathologic results, effect of ISA on aneurysm healing and stent endothelialization was analyzed.Results:Lateral common carotid artery aneurysm models in 6 swines were established, and 6 Tubridge FDs were successfully implanted. Compared with IVUS (3 stents, 4 locus), OCT could detect more ISA (6 stents, 14 locus); and the vascular diameter change area (7 locus), aneurysm neck area (4 locus) and the head and tail of FD (3 locus) were the main sites of FD malapposition; average distance between stent wire and vessel wall was (560.14±101.48) μm. At 12 weeks after surgery, DSA showed that 1 patient had a little residual contrast agent at the aneurysm neck (Kamran grading 3), and the remaining 5 had complete aneurysm occlusion (Kamran grading 4). One FD had moderate lumen stenosis, and the other 5 FDs had lumen patency. OCT indicated mostly disappeared acute ISA; ISA proportion decreased to 21.4 % (3/14), including 2 in the aneurysm neck and 1 in the partial stent. Histopathological results showed bare stent woven silk, without obvious endothelial coverage; in one FD with luminal stenosis, intimal hyperplasia was mainly composed of vascular smooth muscle cells.Conclusion:In carotid artery aneurysm model with FD implantation, OCT can detect more ISA than IVUS; most acute ISA have good outcome at 12 th week of follow-up, while severe ISA can cause delayed FD endothelialization and delayed aneurysm occlusion.
摘要
Objective To analyze three-dimensional imaging characteristics and advantages for severe portal vein stenosis after liver transplantation, and to evaluate clinical efficacy of portal vein stent implantation. Methods Clinical data of 10 patients who received portal vein stent implantation for severe portal vein stenosis after liver transplantation were retrospectively analyzed. Imaging characteristics of severe portal vein stenosis, and advantages of three-dimensional reconstruction imaging and interventional treatment efficacy for severe portal vein stenosis were analyzed. Results Among 10 patients, 3 cases were diagnosed with centripetal stenosis, tortuosity angulation-induced stenosis in 2 cases, compression-induced stenosis in 2 cases, long-segment stenosis and/or vascular occlusion in 3 cases. Three-dimensional reconstruction images possessed advantages in accurate identification of stenosis, identification of stenosis types and measurement of stenosis length. All patients were successfully implanted with portal vein stents. After stent implantation, the diameter of the minimum diameter of portal vein was increased [(6.2±0.9) mm vs. (2.6±1.7) mm, P<0.05], the flow velocity at anastomotic site was decreased [(57±19) cm/s vs. (128±27) cm/s, P<0.05], and the flow velocity at the portal vein adjacent to the liver was increased [(41±6) cm/s vs. (18±6) cm/s, P<0.05]. One patient suffered from intrahepatic hematoma caused by interventional puncture, which was mitigated after conservative observation and treatment. The remaining patients did not experience relevant complications. Conclusions Three-dimensional visualization technique may visually display the location, characteristics and severity of stenosis, which is beneficial for clinicians to make treatment decisions and assist interventional procedures. Timely implantation of portal vein stent may effectively reverse pathological process and improve portal vein blood flow.
摘要
Hepatic alveolar echinococcosis (HAE) is a common zoonotic endemic parasitic disease in western China. It lacks of typical clinical manifestations in the early stage, and symptoms become prominent during the end stage, with an alarmingly high mortality rate. Among the treatment of end-stage HAE (es-HAE), orthotopic liver transplantation is almost the only radical treatment due to insufficient remnant liver volume, uncontrollable bleeding and difficulty in vascular reconstruction in vivo. However, the shortage of donor liver and long-term postoperative use of immunosuppressants limit its application. The introduction of ex vivo liver resection and autotransplantation (ELRA) resolves this dilemma and significantly broadens the indications of es-HAE. In addition, multiple centers in China have optimized and modified ELRA to further improve the treatment system of es-HAE. At present, liver transplantation (including ELRA) of es-HAE remains a hot topic for clinicians. In this article, orthotopic liver transplantation, ELRA, auxiliary ELRA and other surgical treatment of es-HAE were reviewed, aiming to further enhance the diagnosis and treatment of es-HAE and improve clinical prognosis of the patients.
摘要
In recent years, with the development of organ preservation, surgical techniques, perioperative management and immunosuppression regimens, the success rate of liver transplantation and survival rate of the recipients have been significantly enhanced. Liver transplantation has become the optimal treatment for patients with end-stage liver disease. However, biliary complications still commonly occur after liver transplantation, especially biliary anastomotic stricture. Severe biliary anastomotic stricture will not only increase the cost of treatment, but also lead to graft loss and even affect the survival rate of recipients. Therefore, timely diagnosis and treatment of biliary anastomotic stricture play a significant role in improving the survival rate of liver transplant recipients. In this article, the risk factors, clinical symptoms, diagnosis and treatment of biliary anastomotic stricture after liver transplantation were reviewed, aiming to provide novel ideas for the research, diagnosis and treatment of biliary anastomotic stricture after liver transplantation, and further enhance clinical efficacy of liver transplantation and the quality of life of recipients.
摘要
@#Currently, transcatheter intervention has emerged as a first-line treatment for coarctation of the aortic. Due to the radiation exposure associated with catheter interventional therapy, there are numerous restrictions, which harms both patients and medical personnel and is dependent on sizable radiation apparatus. Here, we report for the first time a case of echo-guiding percutaneous aortic stent implantation for a 27 years female patient of reproductive age. After discharge, the patient's aortic coarctation pressure decreased to 18 mm Hg, and the surgical results were satisfactory.