OBJECTIVE To observe the degeneration and regeneration of the Meissner’s corpuscles after implanted sensory nerve into the denervated monkey’s fingers under electron microscope. METHODS The two finger nerves of the monkey’s fingers were denervated. Afterwards, one finger nerve was cut off, and the other was reimplanted into the denervated finger. After 1, 3, 5, 8 and 12 months, the finger skin was cut off and observed under electron microscope. RESULTS The degenerative changes of nerve ending in Meissner’s corpuscles were observed after 1 month of denervation, and the basic structure of the corpuscles had no obvious changes. After 3 months, the axons of corpuscles were disappeared, and the volume of corpuscles was shrunk. The basic structure of nerves was disappeared, and the lemmocyte and neurolemma plate were changed after 5 months. The collagen fibrils in the corpuscles were gradually increased in 8 months, the endoneurial structure and interneurial matrix were completely disappeared and replaced by collagen fibrils in 12 months. After 3 months of nerve implantation, unmyelinated nerve fibers were appeared and grew into the corpuscles. A part of corpuscles innervated in 5 months. Most of corpuscles innervated and myelinated nerve fibers were observed in 8 months. And in 12 months, corpuscles innervated to normal level. CONCLUSION The implantative sensory nerve by means of reinnervating the original corpuscles and regenerating new corpuscles could innervate the degenerative Meissner’s corpuscles.
Thirty patients of primary cholangiolithiasis were treated by the use of a rigid choledochoscope passing through the left lateral liver lobe for removal. 20 cases of them were manipulated with mini-incisions, the stones in 14 patients (70.0%) were completely removed. In the remaining 10 cases of conventional laparotomy, left lateral liver incised in 4, left lateral lobectomy in 6 before rigid choledochoscopic lithotomy; the stons were completely removed in eight patients (80.0%). No case had complications, the short-term effect of the method is obviously better than that of other various operative treatments. It has the advantages of less trauma, less pain, and quick recovery. It is a economical and effective new technique and has prospects of application.
Objective To investigate the effects of different puncture levels on bone cement distribution and effectiveness in bilateral percutaneous vertebroplasty for osteoporotic thoracolumbar compression fractures. Methods A clinical data of 274 patients with osteoporotic thoracolumbar compression fractures who met the selection criteria between December 2017 and December 2020 was retrospectively analyzed. All patients underwent bilateral percutaneous vertebroplasty. During operation, the final position of the puncture needle tip reached was observed by C-arm X-ray machine. And 118 cases of bilateral puncture needle tips were at the same level (group A); 156 cases of bilateral puncture needle tips were at different levels (group B), of which 87 cases were at the upper 1/3 layer and the lower 1/3 layer respectively (group B1), and 69 cases were at the adjacent levels (group B2). There was no significant difference in gender, age, fracture segment, degree of osteoporosis, disease duration, and preoperative visual analogue scale (VAS) score, and Oswestry disability index (ODI) between groups A and B and among groups A, B1, and B2 (P>0.05). The operation time, bone cement injection volume, postoperative VAS score, ODI, and bone cement distribution were compared among the groups. Results All operations were successfully completed without pulmonary embolism, needle tract infection, or nerve compression caused by bone cement leakage. There was no significant difference in operation time and bone cement injection volume between groups A and B or among groups A, B1, and B2 (P>0.05). All patients were followed up 3-32 months, with an average of 7.8 months. There was no significant difference in follow-up time between groups A and B and among groups A, B1, and B2 (P>0.05). At 3 days after operation and last follow-up, VAS score and ODI were significantly lower in group B than in group A (P<0.05), in groups B1 and B2 than in group A (P<0.05), and in group B1 than in group B2 (P<0.05). Imaging review showed that the distribution of bone cement in the coronal midline of injured vertebrae was significantly better in group B than in group A (P<0.05), in groups B1 and B2 than in group A (P<0.05), and in group B1 than in group B2 (P<0.05). In group A, 7 cases had postoperative vertebral collapse and 8 cases had other vertebral fractures. In group B, only 1 case had postoperative vertebral collapse during follow-up. ConclusionBilateral percutaneous vertebroplasty in the treatment of osteoporotic thoracolumbar compression fractures can obtain good bone cement distribution and effectiveness when the puncture needle tips locate at different levels during operation. When the puncture needle tips locate at the upper 1/3 layer and the lower 1/3 layer of the vertebral body, respectively, the puncture sites are closer to the upper and lower endplates, and the injected bone cement is easier to connect with the upper and lower endplates.
ObjectiveTo explore the effectiveness percutaneous monoaxial screw combined with polyaxial pedical screw for treating thoracolumbar fracture by comparing with simple polyaxial pedicle screw fixation. MethodsBetween January 2012 and June 2014, 56 cases of thoracolumbar fractures were treated by percutaneous pedicle screw fixation, the clinical data were retrospectively analyzed. Of 56 cases, 30 were treated with percutaneous monoaxial screw combined with percutaneous polyaxial pedical screw fixation (group A), 26 patients with only percutaneous polyaxial pedicle screw fixation (group B). There was no significant difference in gender, age, body mass index, injury causes, time from injury to admission, involved segments, fracture type, and preoperative American Spinal Injury Association (ASIA) stage, visual analogue scale (VAS), the anterior height of the injured vertebrae, Cobb angle, and sagittal index between 2 groups (P>0.05). The operation time, intraoperative blood loss, and complications were recorded and compared between the 2 groups. The VAS score was used to evaluate the improvement of the pain. The sagittal kyphosis Cobb angle, the anterior height of the injured vertebrae, sagittal index, and the average correction (difference between 3 days after oeration and preoperation) and loss degrees (difference between last follow-up and 3 days after operation) were measured on the X-ray films at preoperation, 3 days after operation, and last follow-up. ResultsIncision healing at stage I was obtained, no related complications occurred. The operation time and intraoperative blood loss showed no significant difference between 2 groups (P>0.05). The patients were followed up 20-42 months (mean, 32 months) in group A and 21-44 months (mean, 30 months) in group B. VAS score of group A was significantly lower than that of group B at 3 days after operation (t=-2.277, P=0.027), but no significant difference was found at last follow-up (t=-0.289, P=0.774). X-ray examination showed good position of internal fixation, with no broken nails or exit of nail. There were significant differences in the anterior height of the injured vertebrae, Cobb angle, and sagittal index between at preoperation and at 3 days and last follow-up, and between at 3 days and last follow-up in 2 groups (P<0.05). The anterior height of the injured vertebrae, Cobb angle, and sagittal index of group A were significantly better than those of group B at 3 days and last follow-up (P<0.05), and correction degree were significantly higher than those of group B (P<0.05), but loss degree was not significant between 2 groups (P>0.05). ConclusionPercutaneous monoaxial screw combined with polyaxial pedicle screw fixation is better than simply polyaxial pedicle screw in effects of treating thoracolumbar fracture under the premise of strictly holding indications.
目的 总结超声引导下经皮经肝穿刺胆管引流术(PTCD)的优、缺点,为临床治疗重症急性胆管炎（SAC）提供参考。方法 回顾性分析我院1994年8月至2008年7月期间对156例老年SAC患者行在超声引导下的PTCD治疗的临床资料。结果 156例行PTCD均获成功,1次穿刺成功140例，其成功率达89.7%（140/156）; 16例首次穿刺失败后再次穿刺均成功。无一例发生腹腔出血、胆汁性腹膜炎等并发症。本组引流效果较好,中毒危象缓解，黄疸减退，肝功能改善。结论 PTCD较外科手术创伤小、操作简单、快速,具有微创的特点,对老年、有严重合并症及复杂疾病不能耐受手术及麻醉的SAC患者，其作为紧急抢救措施切实可行,并为后期施行根治性手术争取了时间。
ObjectiveTo systematically review the efficacy of MitraClip therapy in heart failure patients with mitral insufficiency. MethodsDatabases including PubMed, The Cochrane Library (Issue 11, 2014), EMbase, CBM, CNKI, VIP and WanFang Data were searched from October 2005 to October 2015 to collect before-after controlled studies about the efficacy of MitraClip therapy in heart failure patients with mitral insufficiency. Two reviewers independently screened literature, extracted data and assessed the methodological quality of included studies. Then, meta-analysis was performed using RevMan 5.2 software. ResultsA total of 9 studies involving 782 patients were included. The results of meta-analysis showed that, compared with their conditions before treatment, patients after the MitraClip implantation had a declined NYHA class Ⅲ-Ⅳ ratio (RD=0.72, 95%CI 0.60 to 0.85, P<0.000 01), increased left ventricular ejection fraction (LVEF) (MD=-2.97，95%CI -5.06 to -0.89，P<0.005) and improved performance in 6 min walk-test (6-MWT) (MD=-88.73, 95%CI -157.16 to -20.31, P=0.01). ConclusionMitraClip therapy can, to a certain extent, improve the cardiac function of patients with heart failure and mitral insufficiency. However, further studies are needed to confirm its effects on improving the long-term survival of patients.
ObjectiveTo investigate treatment of severe acute pancreatitis (SAP) concurrent peripancreatic walled-off necrosis.MethodsThe clinical data and treatment of a patient with SAP from the Second Affiliated Hospital of Chongqing Medical University were retrospectively analyzed. The results of discussion of multidisciplinary team (MDT) were summarized.ResultsThe patient was admitted for the SAP with high fever, abdominal pain, and dyspnea for 2 weeks. The enhanced CT scan of the upper abdomen presented severe acute necrotizing pancreatitis with massive peripancreatic walled-off necrosis and pleural effusion. After the full discussion of SAP MDT, the percutaneous sinus tract necrosectomy (PSTN) was performed to relieved the symptom. After the two-stage PSTN treatment, the peripancreatic necrotic tissue was obviously reduced, the drainage was unobstructed, the clinical symptoms and biochemical indicators were obviously improved, and the patient was discharged on day 6 after the surgery.ConclusionsSAP is a critical situation with rapid progression and high mortality, and timing and approach of intervention for complications are very difficult to handle. PSTN could treat SAP with early appearance of infection or walled-off necrosis, which has advantages of less trauma, higher efficiency, and faster recovery as compared with traditional method and is of valuable in clinical practice.
Objective To evaluate the therapeutic efficacy of percutaneous transhepatic portal vein catheterization and thrombolysis on acute superior mesenteric vein thrombosis. Methods The treatment and therapeutic efficacy of 7 cases of acute superior mesenteric vein thrombosis underwent percutaneous transhepatic portal vein catheterization and thrombolysis under ultrasound guidance from August 2005 to April 2009 were analyzed. Results All the patients succeeded in portal vein catheterization and no bile leakage or abdominal bleeding occurred during the procedure. The clinical symptoms such as abdominal pain, abdominal distension， and passing bloody stool relieved were relieved and liquid diet began at postoperative of day 2-5. Emergency operation was done in one case and there was no intestinal fistula. The angiography after the operation showed that the majority of thrombosis were cleared and the blood of portal vein and superior mesenteric vein flowed smoothly. During the follow-up of 3 months to 3 years, all the patients’ status maintained well and no recurrence occurred. Conclusion Treatment of acute superior mesenteric vein thrombosis by percutaneous transhepatic portal vein thrombolysis is safe and effective.
ObjectiveTo summarize the effects of endovascular intervention and artificial graft bypass for the occlusive superficial femoral artery disease. MethodsThe clinical data of 122 patients (136 limbs) with superficial artery occlusive disease underwent endovascular intervention or artificial graft bypass from January 2008 to April 2011 in this hospital were collected retrospectively. Age, TASCⅡgrading, condition of outflow tract, complications before and after procedures, hospital stay, primary patency rate, rate of amputation, and death rate were recorded. Results①Seventy-four limbs of 64 patients were accepted percutaneous transluminal angioplasty and stent graft (PTA/S group), 62 limbs of 58 patients were accepted femoral popliteal artery artificial graft bypass (artificial graft bypass group). Compared with the artificial graft bypass group, the age was significantly older (P < 0.05), TASCⅡA or B lesions were more (P < 0.05), TASCⅡC or D lesions were less (P < 0.05), the limbs with one or three outflow tracts were more (P < 0.05) in the PTA/S group. The limbs with two outflow tracts, and the patients combined with diabetes or hypertension or diabetes and hypertension had no significant differences between these two groups (P > 0.05).②There was no perioperative mortality in two groups. Compared with the artificial graft bypass group, the average hospital stay was sifnificantly shorter (P < 0.05), the 3-year death rate after procedure was higher (P < 0.05), the rate of postoperative incision infection was lower (P < 0.05), the primary patency rate of 36-month after operation was lower (P < 0.05) in the PTA/S group. The rate of amputation, the primary patency rates of 6-, 12-, and 24-month after operation had no significant differences between these two groups (P > 0.05). ConclusionsManagement of occlusive superficial femoral artery disease with femoral popliteal artery artificial bypass grafting exhibits a higher long term patency as compared with percutaneous stent graft. However, the hospital stay is longer than that in PTA/S group, and postoperative infection also occurres individually in artificial graft bypass group. Percutaneous transluminal angioplasty and stent graft has little trauma, faster recovery, shorter hospital stay, which is an important significance for the patients with too old or weak to accept femoral popliteal artery artificial graft bypass. But its long term patency rate needs to be improved.