Abstract: Objective To summarize the clinical experience of plasma exchange （PE） during recardiopulmonary bypass (CPB) of patients with severe haemolysis in cardiac surgery. Methods Between January 2001 and December 2005, five patients required PE for severe haemolysis after cardiac surgery. There were periprosthetic leakage and infective endocarditis in 3 patients, congenital heart disease of pulmonary artery stenosis with unsatisfied right ventricular outflow tract patching in 1 patient and thrombosis during extracorporeal membrane oxygenation (ECMO) in 1 patient. They all need blood purification to avoid acute renal failure. Results Five patients were successfully treated with PE during CPB without major complications. The amount of plasma and blood transfused in the 5 patients were 2.2±0.8L and 0.6±0.3L respectively. The volume of plasma exchange and ultrafiltrate were 3.9±1.8L and 2.4±1.3L respectively.The electrolytes and bloodgas analysis in all patients were maintained at the normal levels. The hemodynamics was stable. After heart resuscitation CPB stopped smoothly. Disappearance of periprosthetic leakage and satisfaction of right ventricular outflow tract patching were observed by echocardiograms after peration.Extubation was performed 24h after the operation in 5 patients, and they were discharged 12 to 53 d after the operation with fully recovery. The urine was clear and the body temperature was normal. Before they left thehospital, the concentration of free hemoglobin was tested in 3 patients. The concentration of free hemoglobin was slightly higher in 1 patient (68mg/L), and normal in 2 patients (lt;40mg/L). Conclusion PE during CPB in severe haemolysis is a safe technique which can effectively prevent acute renal failure caused by severe mechanical haemolysis after cardiac surgery.
Kidney transplantation is an ideal treatment for patients with end-stage renal disease. Circulating alloantibodies against donor human leukocyte antigens and blood group antigens can impair allografts, shorten allograft survival, and limit access to kidney transplantation. Furthermore, the presence of donor specific antibodies is associated with increased incidence of antibody-mediated rejection and decreased graft survival following transplantation. Plasmapheresis, an extracorporeal therapy directed at removing plasma proteins that has been found to minimize the effects of perioperative sensitization in kidney transplantation. Plasmapheresis enables transplantation across the barrier of ABO blood group incompatibility. In addition, it is also an important approach for the treatment of antibody-mediated rejection. Therefore, studying the application of plasmapheresis in perioperative period of kidney transplantation is expected to increase the chance of transplantation and improve the outcomes following transplantation. This article introduces the application of plasmapheresis in the perioperative period of kidney transplantation.
ObjectiveTo evaluate the visual improvement of therapeutic plasma exchange (TPE) for refractory optic neuritis (ON) patients in acute phase.MethodsSeventy-five affected eyes from 44 refractory ON patients with severe visual defect or resistance to high-dose intravenous methylprednisolone (IVMP) therapy, who were admitted to The Chinese PLA General Hospital between January 2015 and August 2016, were recruited and received TPE therapy. Among these patients, 11 were male and 33 were female; the average age was 39.1±13.9; 31 patients had two affected eyes, 13 patients had one affected eye. The course of the disease on the group of patients were more than 2 weeks, and the visual acuity worsened for more than 10 days and continued to deteriorate. TPE treatment was performed on all of the patients. BCVA was recorded before and 24 h after treatment, and the visual function was scored using visual outcome scale (VOS). At the same time, the adverse reactions of TPE treatment were observed. The paired t-test was used to compare the VOS before and after treatment. The correlation between VOS before and after treatment was analyzed by Linear-by-Linear correlation analysis.ResultsAmong 75 affected eyes, the post-therapy VOS 3.89±2.13 was significantly improved from pre-therapy VOS 5.56±1.69 (t=6.77, P＜0.001). Forty-eight of 75 eyes were improved at lease 1 score of VOS, the overall rate of visual improvement was 64.0%. Especially among the eyes with initial vision of light perception, an improved rate of 82.4% was presented. 75.0% in those eyes with initial vision of count fingers and 67.7% in no light perception. Linear-by-Linear correlation analysis showed a significant linear correlation between the scores of VOS before and after TPE treatment (r=0.398, P=0.01). During the course of TPE treatment, 5 patients had mild adverse reactions such as low calcium reaction and allergic reaction and were well controlled after treatment.ConclusionUsing TPE to treat refractory ON in acute phased can improve the visual function of patients.
In recent years, the incidence of hyperlipidemia acute pancreatitis (HLAP) has been increasing year by year, but its pathogenesis has not been completely clear. There are many clinical treatment methods for HLAP, such as lipid-lowering drugs, low molecular weight heparin, insulin, and plasma exchange. Actively reducing serum triglyceride is the core of treatment. Plasma exchange can quickly and effectively reduce the level of triglyceride, and its application in the treatment of HLAP is gradually increasing. This article reviews the recent advances in the pathogenesis, clinical characteristics, diagnosis, and treatment of HLAP, focusing on the mechanism, indications, timing, and disadvantages of plasma exchange therapy for HLAP.
目的：探讨毒蕈中毒所致中毒性肝炎的临床表现、治疗与预后关系。方法：对3例急性毒蕈中毒患者进行回顾性临床分析。结果：3例患者均出现中毒性肝炎，2例经治疗后好转，1例因多器官功能衰竭死亡。结论：中毒性肝炎如导致多脏器损害，预后差；及早洗胃，彻底清除毒物是救治关键；血浆置换治疗有一定疗效，肝移植是最有效的治疗手段。
Plasma exchange (PE) is a therapeutic blood component replacement method. The blood of patients is first separated into plasma and blood cell components using a blood cell separator in vitro, the plasma containing harmful pathogenic substances is then discarded and replaced with the same volume of exchange solution. Finally the separated blood cells together with the exchange solution are returned back to the blood circulation of patients. By reducing the circulating antibodies, abnormal plasma proteins or cytokines and other pathogenic molecules, PE can block the disease process. PE has a good therapeutic effect on neuromyelitis optica-related optic neuritis (NMO-ON), which shows resistant to glucocorticoid therapy for the first onset. The American Society for Apheresis guideline evaluates PE for acute optic neuritis as a recommended grade 1B, type II indication. In the implementation of PE treatment for NMO-ON and other diseases, indications and contraindications should be strictly adhered to the guideline, treatment procedures and protocols should be optimized, common adverse events and its prevention and management should be known and alerted. It is important to conduct multi-center clinical cooperation and a high standard clinical randomized controlled study, to find out the optimal time window, the best protocol, and the associated factors for the efficacy and prognosis of PE in NMO-ON.