In recent years, the field of transcatheter heart valve interventional therapy has developed rapidly. Valvular thrombosis is a rare postoperative complication, which can affect valvular function early or lead to clinical embolic events, and is gradually being valued by surgeons. The clinical manifestations of thrombosis after different types of interventional valve replacement are different. Although anticoagulant therapy is believed to be effective for valve thrombosis, the selection of anticoagulant drugs and the duration of anticoagulation are still controversial. This article reviews the definition, clinical features, prevention and treatment of valve thrombosis after several types of transcatheter heart valve replacement, mainly related to transcatheter aortic valve replacement and transcatheter mitral valve replacement, and aims to provide a reference for the diagnosis and treatment of valve thrombosis after transcatheter heart valve replacement.
目的 探讨含左氧氟沙星的三联疗法作为一线方案对幽门螺杆菌感染治疗的有效性和安全性。 方法 选择2008年9月－2011年3月125例确诊为幽门螺杆菌感染的初治患者，随机分为雷贝拉唑、阿莫西林联合左氧氟沙星组（A组）和雷贝拉唑、阿莫西林联合克拉霉素组（B组），经治疗7 d后比较两组根除率和不良反应发生率。 结果 A、B组幽门螺杆菌符合方案分析根除率分别为91.8%、77.6%，意向性治疗根除率分别为88.9%、72.6%，A组根除率高于B组，差异有统计学意义（P＜0.05）。A、B组不良反应发生率分别为4.8%、3.2%（P＞0.05）。 结论 以左氧氟沙星、阿莫西林、雷贝拉唑为组合的三联疗法能显著提高幽门螺杆菌感染的初治成功率，不良反应少，安全有效。
目的 探讨肝硬化腹水患者不同血清钠水平与病情严重程度的关系。 方法 回顾分析2008年7月－2010年6月收治47例肝硬化腹水并发低钠血症患者，根据其入院时血清钠水平分为低钠血症轻（A组）、中（B组）、重（C组）3组。比较肝硬化腹水患者不同血钠水平的腹水程度及疗效的关系、以及低钠程度与肝性脑病、肝肾综合征和死亡发生率的关系。 结果 与A组比较，B、C两组腹水量、肝性脑病、肝肾综合征及病死率明显增高，差异有统计学意义（P＜0.05）；对治疗的效果明显降低（P＜0.05）。 结论 肝硬化腹水患者的血清钠水平与其病情程度具有紧密相关性，监测血清钠的水平可作为判断病情严重程度的重要指标之一，提示在临床上需重视预防、及时发现并治疗低钠血症。
Exercise is vital for diabetics to improve their blood glucose level. However, the quantitative relationship between exercise modes (including types, intensity, time, etc.) and the blood glucose is still not clear. In order to answer these questions, this paper established a blood glucose metabolic model based on ordinary differential equation method. Furthermore, a silico method was adopted to study the effects of different aerobic exercise intensities (light, moderate and vigorous) on blood glucose and optimal strategies of insulin infusion for type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM). Additionally, the universality of proposed model and insulin infusion strategies was verified based on 1 000 virtual diabetes patients’ simulation. The experimental results showed that: (1) Vigorous-intensity aerobic exercise may result in hypoglycemia (< 3.89 mmol/L), which was so harmful to health that diabetics should avoid. Compared with moderate-intensity exercise, the light-intensity aerobic exercise intuitively lowered blood glucose slowly and caused a relative long high-blood-glucose (> 6.11 mmol/L) period, however, its overall blood glucose risk index (BGRI) was lower. (2) Insulin dosage of the optimized strategies decreased by 50% and 84% for T1DM and T2DM when they did moderate intensity exercise. As for light intensity exercise, the dosage of insulin was almost the same as they didn’t do exercise, but BGRI decreased significantly. (3) The simulations of 1 000 virtual diabetic patients manifested that the proposed model and the insulin infusion strategies had good universality. The results of this study can not only help to improve the quantitative understanding about the effects of aerobic exercise on blood glucose of diabetic patients, but also contribute to the regulation and management of blood glucose in exercise mode.
Transcatheter aortic valve replacement (TAVR) is the best treatment for severe aortic stenosis with high surgical risk, and low body weight significantly increased the risk of surgery and postoperative all-cause mortality. A case of elderly female diagnosed with severe aortic valve stenosis and extremely low body weight was presented in this article. Additionally, horizocardia and low located coronary orifice were also found in this patient, which markedly increased the risk and complexity of the TAVR procedure. During the operation, circulatory collapse occurred, and prosthetic valve was quickly released under emergency cardiopulmonary resuscitation. The operation was successful and the patient’s vital signs recovered soon. The follow-up showed that the patient was in good condition.
ObjectiveTo analyze the characteristics and cardiac anatomy of patients with conduction block after transcatheter aortic valve replacement (TAVR) with Venus-A valve.MethodsRetrospective analysis was conducted on the clinical data of patients with severe aortic stenosis who underwent TAVR with Venus-A valve in the Second Affiliated Hospital of Army Military Medical University from October 2017 to May 2020. According to the occurrence of heart conduction block after TAVR, the patients were divided into the blocked group and the unblocked group, and the differences in characteristics and cardiac anatomy between the two groups were compared.ResultsForty-nine patients with severe aortic stenosis were included in the analysis, including 29 in the blocked group and 20 in the unblocked group. The incidence of atrial fibrillation in the blocked group was higher than that in the unblocked group (P=0.015), and there was no statistically significant difference in other preoperative indicators (P>0.05). There was no statistically significant difference in postoperative indicators between the blocked group and the unblocked group (P>0.05). Among bicuspid aortic valve, the ellipticity of left ventricular outflow tract and annulus in the blocked group were higher than those in the unblocked group (P<0.05), and the ratio of the short diameter of the left ventricular outflow tract to the bottom diameter of the implanted valve was smaller than that of the unblocked group (t=2.225, P=0.043). There was no significant difference in other cardiac anatomical indicators (P>0.05). As to tricuspid aortic valve cases, there was no significant difference in cardiac anatomic parameters between the blocked group and the unblocked group (P>0.05).ConclusionsFor bicuspid aortic valve patients with severe aortic stenosis and implanted with Venus-A valve, larger elliptic rate of annulus or left ventricular outflow tract, smaller proportion of left ventricular outflow tract diameter to the bottom diameter of implanted valve are associated with conduction block after TAVR. These anatomical patterns might be used as potential clinical indicators to predict postoperative conduction block.