Background:Hemodialysis(HD) per se is a risk factor for thrombosis.Considering the growing body of evidence on blood-flow restriction(BFR) exercise in HD patients,identification of possible risk factors related to the...Background:Hemodialysis(HD) per se is a risk factor for thrombosis.Considering the growing body of evidence on blood-flow restriction(BFR) exercise in HD patients,identification of possible risk factors related to the prothrombotic agent D-dimer is required for the safety and feasibility of this training model.The aim of the present study was to identify risk factors associated with higher D-dimer levels and to determine the acute effect of resistance exercise(RE) with BFR on this molecule.Methods:Two hundred and six HD patients volunteered for this study(all with a glomerular filtration rate of <15 mL/min/1.73 m2).The RE+BFR session consisted of 50% arterial occlusion pressure during 50 min sessions of HD(intradialytic exercise).RE repetitions included concentric and eccentric lifting phases(each lasting 2 s) and were supervised by a strength and conditioning specialist.Results:Several variables were associated with elevated levels of D-dimer,including higher blood glucose,citrate use,recent cardiovascular events,recent intercurrents,higher inflammatory status,catheter as vascular access,older patients(>70 years old),and HD vintage.Furthermore,RE+BFR significantly increases D-dimer after 4 h.Patients with borderline baseline D-dimer levels(400-490 ng/mL) displayed increased risk of elevating D-dimer over the normal range(≥500 ng/mL).Conclusion:These results identified factors associated with a heightened prothrombotic state and may assist in the screening process for HD patients who wish to undergo RE+BFR.D-dimer and/or other fibrinolysis factors should be assessed at baseline and throughout the protocol as a precautionary measure to maximize safety during RE+BFR.展开更多
基金supported by a grant provided by the Coordenacao de Aperfeicoamento de Pessoal de Nível Superior-Brazil-Finance Code 001 and National Council for Scientific and Technological Developmentfinanced in part by the Conselho Nacional de Desenvolvimento Científico e Tecnológico and Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil--Finance Code 001funded by the Fundacao de Apoio à Pesquisa do Distrito Federal with grants from demanda espontanea-Edital 09/2022
文摘Background:Hemodialysis(HD) per se is a risk factor for thrombosis.Considering the growing body of evidence on blood-flow restriction(BFR) exercise in HD patients,identification of possible risk factors related to the prothrombotic agent D-dimer is required for the safety and feasibility of this training model.The aim of the present study was to identify risk factors associated with higher D-dimer levels and to determine the acute effect of resistance exercise(RE) with BFR on this molecule.Methods:Two hundred and six HD patients volunteered for this study(all with a glomerular filtration rate of <15 mL/min/1.73 m2).The RE+BFR session consisted of 50% arterial occlusion pressure during 50 min sessions of HD(intradialytic exercise).RE repetitions included concentric and eccentric lifting phases(each lasting 2 s) and were supervised by a strength and conditioning specialist.Results:Several variables were associated with elevated levels of D-dimer,including higher blood glucose,citrate use,recent cardiovascular events,recent intercurrents,higher inflammatory status,catheter as vascular access,older patients(>70 years old),and HD vintage.Furthermore,RE+BFR significantly increases D-dimer after 4 h.Patients with borderline baseline D-dimer levels(400-490 ng/mL) displayed increased risk of elevating D-dimer over the normal range(≥500 ng/mL).Conclusion:These results identified factors associated with a heightened prothrombotic state and may assist in the screening process for HD patients who wish to undergo RE+BFR.D-dimer and/or other fibrinolysis factors should be assessed at baseline and throughout the protocol as a precautionary measure to maximize safety during RE+BFR.
文摘目的观察非增殖型糖尿病视网膜病变(nonproliferative diabetic retinopathy,NPDR)肝肾阴虚证治疗中六味地黄汤加味联合针灸对其视盘血流及视功能的影响。方法选取NPDR肝肾阴虚证患者86例,经Excel产生随机序列号将其分为对照组和试验组,每组43例。两组均采用常规治疗,对照组另采用针灸治疗,试验组在对照组基础上增用六味地黄汤加味治疗。比较治疗前后两组中医证候积分、视盘血流及视功能;比较两组治疗效果及不良反应。结果两组各脱落2例,最终均纳入41例。治疗后试验组主症、次症积分及总积分,最佳矫正视力(best corrected visual acuity,BCVA)、对数最小分辨角(logarithm of the minimum angle of resolution,LogMAR)均低于对照组(P<0.05),颞下、颞上、上颞、上鼻、下鼻、下颞、鼻上、鼻下视盘旁放射状毛细血管网血流密度(peripapillary telangiectasia vessel density,PPVD)值均高于对照组(P<0.05);试验组治疗总有效率高于对照组(P<0.05);对照组、试验组不良反应发生率比较,差异无统计学意义(P>0.05)。结论六味地黄汤加味联合针灸可减轻NPDR中医症状,改善视盘血流、视功能及临床疗效,且不会导致不良反应增加。
