Meta-analysis of ProGlide versus MANTA vascular closure devices for large-bore access site management

IntroductionThe comparative effectiveness of ProGlide® compared with MANTA® vascular closure devices (VCDs) in large-bore access site management is not entirely certain, and has only been evaluated in underpowered studies. This meta-analysis aimed to evaluate the outcomes of ProGlide® compared with MANTA® VCDs.MethodsPubMed, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL) were searched systematically for relevant articles from the inception of the database until August 27, 2021. The outcomes of interest were all bleeding events, major bleeding, major and minor vascular complications, pseudoaneurysm, stenosis or dissection, and VCD failure. Risk ratios were used as point estimates of endpoints. All statistical analyses were carried out using R version 4.0.3.ResultsFour observational studies and 1 pilot randomized controlled trial (RCT) were included in the final analysis. There was no significant difference between the ProGlide® and MANTA® groups in the risk of all bleeding events, major/life-threatening bleeding, major vascular complications, minor vascular complications, pseudoaneurysms, and/or stenosis or dissection of the entry site vessel. However, the incidence of VCD failure was higher in the ProGlide® group compared with the MANTA® group (RR 1.94; 95% CI 1.31–2.84; I² = 0%).ConclusionIn conclusion, both VCDs (ProGlide® and MANTA®) have comparable outcomes with regard to risk of bleeding, vascular complications, pseudoaneurysms, and/or stenosis or dissection of entry vessel. ProGlide® was however associated with higher device failure.     

Differences in muscle synergies between healthy subjects and transfemoral amputees during normal transient-state walking speed

BackgroundLower limb amputation is a major public health issue globally, and its prevalence is increasing significantly around the world. Previous studies on lower limb amputees showed analogous complexity implemented by the neurological system which does not depend on the level of amputation.Research questionWhat are the differences in muscle synergies between healthy subjects (HS) and transfemoral amputees (TFA) during self-selected normal transient-state walking speed?Methodsthirteen male HS and eleven male TFA participated in this study. Surface electromyography (sEMG) data were collected from HS dominant leg and TFA intact limb. Concatenated non-negative matrix factorization (CNMF) was used to extract muscle synergy components synergy vectors (S) and activation coefficient profiles (C). Correlation between a pair of synergy vectors from HS and TFA was analyzed by means of the coefficient of determination (R²). Statistical parametric mapping (SPM) was used to compare the temporal components of the muscle synergies between groups.Resultsthe highest correlation was perceived in synergy 2 (S2) and 3 (S3) and the lowest in synergy 1 (S1) and 4 (S4) between HS and TFA. Statistically significant differences were observed in all of the activation coefficients, particularly during the stance phase. Significant lag in the activation coefficient of S2 (due mainly to activated plantarflexors) resulted in a statistically larger portion of the gait cycle (GC) in stance phase in TFA.SignificanceUnderstanding the activation patterns of lower limb amputees’ muscles that control their intact leg (IL) and prosthetic leg (PL) joints could lead to greater knowledge of neuromuscular compensation strategies in amputees. Studying the low-dimensional muscle synergy patterns in the lower limbs can further this understanding. The findings in this study could contribute to improving gait rehabilitation of lower limb amputees and development of the new generation of prostheses.     

经桡动脉入路急诊冠状动脉介入治疗的临床研究

目的:通过对比桡动脉与股动脉入径行急诊冠脉介入治疗的对比研究,来观察急性心梗患者经桡动脉行急诊冠脉介入治疗的安全性和可行性.方法:选择2005年12月至2006年11月我院诊断明确急性心肌梗死(AMI)的患者83例(男性64例),均为血液动力学稳定、桡动脉波动良好、Allen's试验阳性患者,随机分组.经桡动脉介入组为38例,经股动脉介入组为49例.结果:PCI总成功率为100%,桡动脉组插管成功率为94.7%(36/38),股动脉组插管成功率为100%(49/49),p＞0.05,无统计学意义.罪犯血管最终开通率(TIMI3级)桡动脉组为86.8%(33/36)其中2例因导管不能到位改为股动脉入径.股动脉组为91.8%(45/49),p＞0.05,无统计学意义.建立动脉通路时间和整个手术时间两组间无明显统计学差异,桡动脉组为45.7±20.3min,股动脉组为48.5±16.3min.p＞0.05,无统计学意义.术后出血并发症桡动脉组为0,股动脉组为11%(5/45).两组间有统计学差异p＜0.05.结论:对血流稳定的AMI患者,两种介入途径的PCI治疗时程和效果相似,但桡动脉组并发症明显减少,更有利于治疗安全,可作为AMI患者行急诊PCI的常规途径之一.     

经桡动脉和股动脉冠状动脉造影的对比研究

目的探讨经桡动脉和股动脉途径冠脉造影的优缺点。方法 2009年1月至2010年6月我院行冠脉造影的患者62例,应用随机分配表随机分为两组（桡动脉组30例,股动脉组32例）,比较两组的穿刺成功率、造影成功率、手术操作时间、住院时间、住院费用及并发症。结果与股动脉组比较,桡动脉组住院时间（5.9±1.3）天,住院费用（7363.8±1124.9）元,无腰背痛、排尿障碍,差异有统计学意义（P〈0.05）;而两组在穿刺成功率、造影成功率、手术操作时间方面差异无统计学意义（P〉0.05）。结论与股动脉途径相比,经桡动脉途径冠脉造影安全有效,并发症少,无需卧床,住院时间短,费用低,患者易于接受。     

Transfemoral closure of patent ductus arteriosus: An alternative to surgery in older patients

Two patients with congestive heart failure underwent successful closure of patent ductus arteriosus (PDA) at ages 58 and 63, respectively, using the transfemoral technique of Porstmann and Sato. The long-term benefits obtained in these two patients suggests a potential role for this technique in the elderly patient with PDA     

老年冠心病经桡动脉穿刺介入治疗的可行性研究

目的　对比评价老年冠心病经桡动脉穿刺介入治疗的安全性及疗效。方法　沈阳军区总医院心内科于 2 0 0 2 -0 1～ 2 0 0 4 - 0 8对 774例 6 0岁以上的老年冠心病行介入治疗 ,患者按动脉穿刺途径随机分成桡动脉组 (n =382 )和股动脉组 (n =382 ) ,观察两组间动脉穿刺成功率、动脉穿刺时间、手术操作时间、X线曝光时间、造影剂用量、外周血管并发症和术后肺栓塞发生情况。结果　经桡动脉穿刺途径成功共 36 8例 ,经股动脉穿刺途径成功共 372例。两组间动脉穿刺成功率、X线曝光时间、造影剂用量差异无显著性 (P >0 0 5 )。动脉穿刺时间桡动脉组明显多于股动脉组 (P <0 0 5 ) ,外周血管并发症桡动脉组明显少于股动脉组 (P <0 0 5 ) ,在股动脉组术后肺栓塞发生2例 ,而桡动脉组 0例。桡动脉组和股动脉组行血管内超声 (32例∶34例 )和球囊切割术 (38例∶37例 )差异无显著性(P >0 0 5 )。总介入治疗手术成功率为 98 2 % (76 0 /774 )。结论　只要规范化操作 ,老年冠心病的经桡动脉穿刺介入治疗方法安全、可行和有效 ,术后外周血管并发症发生少。     

Influence of transfemoral amputation length on resulting loads at the osseointegrated prosthesis fixation during walking and falling

Background

Transfemoral amputation is a surgical measure in which the surgeon typically conserves as much tissue and bone as possible. Osseointegrated fixation of prostheses is a promising alternative to conventional socket-based fixation. However, osseointegrated prostheses pose some risk of possible bone fracture under unexpected high-impact loading scenarios, such as a fall, and this should be protected against by a safety element. The aim of the present study was to determine the effect of amputation height on the forces and moments at the bone–prosthesis interface during normal gait and three falling scenarios.

Methods

Forces and moments at four amputation heights were determined from a multi-body simulation driven by data captured from an able-bodied participant.

Findings

In all three falling scenarios, forces were relatively independent of amputation height, while moments generally displayed considerable increases with shorter residual limb length. Peak moments ranged from 105 Nm (SD 75) (most distal amputation height) to 229 Nm (SD 99) (most proximal amputation height) for a “falling during gait” scenario.

Interpretation

Our findings reveal the dependence of interface loads on amputation height in normal gait and falling. This information may lead to improved prosthesis safety elements against bending moments.