Objective To study the influence factors for HBV reinfection following liver transplantation.Methods 92 cases of liver transplantation were enrolled for open non-randomized clinical study.Given conventional OLTx and immunosuppressive agents and antibiotics to prevent infection etc,patients are divided into lamivudine alone and HBIG combined with lamivudine group.Observation of postoperative liver function,HBV serum markers,HBV DNA in PBMC,YMDD and HBV S gene mutation,liver tissue IH etc.Results In 92 cases of liver transplantation with HBV-related liver disease,hepatitis B recurrence rate was 4.35%(4/92).In lamivudine group the HBV infection rate was 35%(7/20);In combined therapy group the HBV infection rate was 6.94%(5/72).With preoperatively negative HBV DNA negative the hepatitis B recurrence rate was 0;With preoperatively positive HBV DNA,the postoperative HBV infection rate was 17.39%(12/69),which had cases with S gene or YMDD mutation.In patients with negative HBV DNA before and after operation,the HBV re-infection rate was 11.11%(1/9);In 5 cases with preoperative HBV DNA positive,the HBV infection rate was 4/5 after LTx;before and after operation HBV DNA are positive,the HBV infection rate was 100%(3/3);the preoperative HBV DNA positive and postoperative HBV DNA negative,the HBV infection rate was 50%(1/2).Conclusion To prevent HBV infection after LTx,lamivudine group easily leads to HBV re-infection than HBIG combined with lamivudine group.Preoperative serum HBV DNA positive,preoperative and postoperative HBV YMDD and S gene mutation are the primary factors affecting the HBV re-infection after operation.HBV DNA positive in PBMC is the source of HBV re-infection,but also the factor of recurrence of hepatitis B.

Objective To investigate the clinical value of argon plasma coagulation (APC)trans-choledochoscopy in biliary tract complications following liver transplantation. Methods All 27 patients underwent T-tube-choledochoscopy or percutaneous transhepatic cholangioscope (PTCS).APC was used to burn the hyperplasia of bile duct stenosis and then expended the stenosis with bougienage. The bile duct foreign bodies were burnt by APC and then eliminated. The granulation tissues of bile duct were burnt by APC after biopsied. The sutures of anastomoses were burnt by APC and then eliminated. Results In general, the therapeutic achievement ratio of stenosis of bile duct in 25 cases of 28 locations was 78. 6% (22/28). The clearance ratio of bile duct foreign bodies was 85. 7% (6/7). The elimination ratio of granulation tissues was 100% (5/5), the same as the elimination ratio of sutures of anastomoses. There were no treatment-related complications about APC. The recurrence ratio of bile duct stenosis was respectively 4.5% (1/22) and 13. 6% (3/22)after follow-up for 3 and 6 months respectively. All the recurrent stenosis was non-anastomotic. The recurrence ratio of bile duct foreign bodies was respectively 16. 7% (1/6) and 33.3% (2/6) after follow-up for 3 and 6 months respectively. Conclusion APC trans-choledochoscopy in treatment of biliary anastomotic stenosis, mural foreign bodies, mural biliary cast, granulation tissues of bile duct and sutures of anastomoses following liver transplantion has a high success ratio and a sure long-term efficacy without treatment-related complications.

Objective To evaluate the terminal segment of the intracranial vertebral artery (tICVA) fine and atherosclerotic lesions using high-resolution MRI (HRMRI) in order to guide endovascular interventional therapy.Methods From October 2015 to October 2016,4 patients with bilateral tICVA diagnosed with digital subtraction angiography (DSA) and admitted to Xuanwu Hospital,Capital Medical University were analyzed retrospectively.At the same time,time of flight (TOF) and black blood imaging were used.The bilateral tICVA imaging features in 4 patients were analyzed.Congenital dysplasia of vertebral artery and atherosclerotic lesions were identified.Results DSA revealed that bilateral tICVA fine or occlusion.HRMRI evaluation of the vascular wall structure showed that vascular dysplasia in 4 cases were all located on the right sides,showing no obvious thickening of the wall thickness,and the diameter was less than 1/2 of the contralateral side.One patient had atherosclerotic stenosis on the left and 3 had occlusion,showing local wall thickening,plaque formation,and resulting in the narrowing of the corresponding lumen and even occlusion.Three of the patients were treated with endovascular intervention.Conclusion HRMRI is helpful to differentiate hypoplasia in terminal intracranial vertebral artery and atherosclerotic stenosis or occlusion,identifying the dominant side of the vertebral artery and providing image basis for endovascular treatment of vertebral artery.

Objective To investigate the feasibility and safety of endovascular recanalization of chronic occlusion of large intracranial artery.Methods From January 2009 to January 2017,the clinical and imaging data of 15 patients with chronic occlusion of large intracranial artery admitted to the Department of Interventional Neuroradiology,Xuanwu Hospital,Capital Medical University for endovascular recanalization were analyzed retrospectively.Twelve patients were V4 segment occlusion of vertebral artery and 3 were internal carotid artery occlusion.Preoperative whole brain digital subtraction angiography (DSA) was used to assess the occlusion length and location.High-resolution magnetic resonance imaging (MRI) was used to evaluate the nature of occlusion and the feasibility of recanalization.The intraoperative bilateral femoral artery sheath placement was conducted in 13 cases,one side was used for recanalization and stenting,and the other side was compensated by filling the distal occlusion of the artery through collateral circulation as the reference path map,and increased the feasibility of recanalization.According to the thrombolysis in cerebral infarction (TICI) grades after procedure,the forward flow after recanalization was systematically evaluated,and grade ≥2b was defined as the success of recanalization.Results The median time between the first onset of symptoms and recanalization was 50 (range,18-365) days.The occluded recanalization sites included intracranial segment of vertebral artery in 12 cases and intracranial segment of internal carotid artery in 3 cases.Recanalization was successful in 13 cases and recanalization failure of the intracranial segment of vertebral artery was in 2 cases.Recanalization was successful in 13 cases,and intracranial vertebral artery recanalization failed in 2 cases.Of the 13 patients of successful recanalization,the forward flow of angiography returned to grade TICI 3 in 12 cases after recanalization,and returned to TICI 2b in 1 case;the symptoms of 7 cases were improved,the symptoms of 4 cases did not have any change,and the symptoms of 2 patients aggravated after procedure and developed transient ischemic attack or stroke.After 11 patients were followed up for a median of 39 (3-89) months,the median mRS score was 1 (0-2).Conclusion For recanalization of chronic large intracranial artery occlusion,using preoperative high-resolution magnetic resonance imaging evaluation and intraoperative bilateral sheath placement technique may increase the patency rate and reduce the perioperative complications.

Objective To investigate the clinical incidence of cerebral artery fenestration and its digital subtraction angiography (DSA) characteristics in order to improve the understanding of the clinical significance of the cerebral artery fenestration. Methods Whole cerebral angiography with DSA was employed in a total of 6 432 patients. The imaging material was retrospectively analyzed. The incidence of cerebral artery fenestration and the associated cerebral artery diseases were analyzed. Results Among the 6 432 patients, cerebral artery fenestration was detected in 283 with 296 fenestrations in total (4.60%, 296/6 432). The cerebral artery fenestration of internal carotid was seen in 19 cases with 21 fenestrations (9 on the left side and 12 on the right side), and the detection rate was 0.33%. The fenestration of anterior cerebral artery was found in 46 cases with 51 fenestrations (25 on the left side and 26 on the right side), and the detection rate was 0.79%. The fenestration of middle cerebral artery was found in 54 cases with 57 fenestrations (29 on the left side and 28 on the right side), and the detection rate was 0.89%. The fenestration of vertebral artery was revealed in 68 cases with 71 fenestrations (37 on the left side and 34 on the right side), and the detection rate was 1.10%. The fenestration of basilar artery was demonstrated in 95 cases with 95 fenestrations, and the detection rate was 1.37%. Besides, 17 fenestrations were accompanied with aneurysms and 5 fenestrations were complicated by arteriovenous malformations. Transient cerebral ischemia occurred in 37 cases with fenestrations, and ischemic symptoms were consistent with the blood supply region of the fenestration structures. Among the 37 cases , cerebral infarction at the distal region of the fenestration characteristics of the cerebral fenestrations is of great clinical significance for its diagnosis and for the selection of therapeutic scheme.

OBJECTIVETo study the prevention and treatment of HBV reinfection after liver transplantation.

METHODSTotal 19 cases of chronic fulminant hepatitis B, the end-stage of liver cirrhosis and liver carcinoma complicated with HBV cirrhosis. Were performed liver transplantation and given anti-viral drugs pre and post transplantation. Famciclovir was administered in 4 cases, lamivudine in 13 cases and lamivudine+HBIG in 2 cases. The serum HBVM and liver biopsy immunohistochemistry were performed.

RESULTSFour cases given famciclovir developed reinfection. Serum HBsAg, HBeAg and HBV DNA were positive in 3 cases. Liver biopsy immunohistochemistry showed HBsAg and HBeAg phenotype. Classical viral hepatitis in 1 case occurred, three cases died. In the lamivudin group 7 cases showed positive for HBsAg, 2 cases positive for HBV DNA, 4 cases HBsAg or HBcAg phenotype. One case showed positive for serum anti-HBc the other negative for HBVM, and liver biopsy immunohistochemistry was negative too.

CONCLUSIONSThese date suggest that anti-virus prevention and treatment in pre and post liver transplantation with HBV infected correlative disease is necessary, feasible and effective.

2-Aminopurine ; analogs & derivatives ; therapeutic use ; Adult ; Antiviral Agents ; Biopsy ; methods ; DNA, Viral ; analysis ; Drug Combinations ; Female ; Hepatitis B ; prevention & control ; Hepatitis B Surface Antigens ; blood ; Hepatitis B e Antigens ; blood ; Humans ; Immunoglobulins ; therapeutic use ; Lamivudine ; therapeutic use ; Liver Transplantation ; adverse effects ; Male ; Middle Aged ; Postoperative Care ; methods ; Preoperative Care ; methods ; Recurrence

OBJECTIVETo assess the value of stent-assistant angioplasty for intracranial vascular diseases.

METHODSThirteen patients with intracranial vascular diseases were treated consecutively by stent-assistant angioplasty for different purposes. Of these patients 7 had symptomatic intracranial artery stenosis, 3 intracranial wide-neck aneurysms, 2 intracranial pseudoaneurysms, and 1 bilateral transverse sinus stenosis. Clinical procedures and technical data of the patients were retrospectively analyzed.

RESULTSIn the 7 patients, the degree of intracranial artery stenosis reduced from 83% to 5%. Three months after the operation they exhibited good patency of stented lesions. Intracranial wide neck aneurysms (with 2 pseudoaneurysms) were successfully embolized with GDC in 5 patients. The patients with bilateral transverse sinus stenosis were implanted a self-expanded stent in the right transverse sinus. One patient failed because of the tortuous configuration of the left jugular bulb, but the patient's symptoms were improved quickly after the procedure.

CONCLUSIONStent-assistant angioplasty is a useful technique for selected intracranial vascular diseases, and it needs further investigation.

Adult ; Angioplasty, Balloon ; methods ; Cerebrovascular Disorders ; therapy ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Stents ; Treatment Outcome

Objective To review the experience of multiple modality endovascular treatment for intracranial venous thrombosis, and to evaluate the efficacy and risk of endovascular thrombolysis for intracranial venous thrombosis.Methods From October, 2000 to October, 2001, 12 patients with intracranial venous thrombosis confirmed by CT, MRI, MRV, and/or DSA were treated with multiple modality endovascular thrombolysis including intravenous thrombolysis, mechanical thrombus maceration, intraarterial thrombolysis, and stenting.After thrombolysis, treatment aimed at the primary diseases was continued and warfarin was used for 6 months.The patients were followed-up for 17-29 months, averaged 23 months.Results Of the twelve patients, all underwent transvenous thrombolysis, ten underwent combined transvenous thrombolysis and clot maceration, seven underwent transvenous infusion of urokinase combined with transarterial infusion of urokinase.Two underwent transvenous infusion of urokinase combined with transarterial infusion of urokinase.The thrombolysis duration was from one to three days.The infusion dose of urokinase was 800 000 to 2 900 000 IU, the averaging dosage of urokinase was less than 1 000 000 IU per day.All patients achieved from recanalization of sinuses as confirmed on postprocedural angiography, MRI, and MRV studies prior to hospital discharge.At discharge, all the patients improved neurologically, and GCS improved from averaged 12 of pre-operation to 14 of post-operation.During the averaging 23 months follow-up, no patient recurred. Conclusion Combined multiple modality endovascular treatment is an effective and safe procedure for potentially catastrophic intracranial venous thrombosis.