Background: The magnitude of the hyperemic response due to repeated thigh stump exercise on incremental contraction intensity might be useful information in localized exercise tolerance for devising cardiovascular phy...Background: The magnitude of the hyperemic response due to repeated thigh stump exercise on incremental contraction intensity might be useful information in localized exercise tolerance for devising cardiovascular physical therapy for amputees. The effect of exercise on amputated leg blood flow (LBF) may potentially be altered due to voluntary muscle contractions after loss of the lower leg compared with the healthy leg. Case Presentation: A 57-year-old male patient with Burger disease attempted 3 min unilateral repeat/dynamic knee extensor exercise at a target muscle contraction frequency (1 s thigh muscle contraction and 1 s relaxation, 90 repetitions) with each leg <right transtibial amputated leg (AL) using a total surface-bearing prosthesis (TSB) and left non-AL> at six different contraction intensities (rubber resistance belt). Simultaneous measurement of blood velocity/flow (Doppler ultrasound) in the femoral artery, blood pressure, leg vascular conductance (LVC), and peak muscle strength (PMS) were performed during the 3 min exercise period. The maximum voluntary contraction by one-legged isometric knee muscle contraction was 14.7 kg in non-AL and 7.9 kg in the AL with prosthesis. The relative PMS was defined as “PMS/maximum voluntary contraction × 100 (%)”. Pre-exercise LBF was lower in the AL (200 ± 25 ml/min) than the non-AL (275 ± 74 ml/min). Both the non-AL and AL showed good positive linear relationships between absolute-/relative-PMS and LBF or LVC during 30 s at steady-state before the end of the exercise period. Furthermore, there was also similarity seen in the increase rate in LBF and/or LVC for the incremental relative PMS compared with the absolute PMS. Conclusion: In this case, the muscle strength depended on blood flow increase/vasodilation was seen in this “AL” using a TSB prosthesis for repeated dynamic knee extensor exercise. The present amputee’s limb muscle strengthening with the resection stump closely related to the degree of hyperemia in the amputated limb.展开更多
目的探讨全髋关节置换(Total hip arthroplasty,THA)术后下肢深静脉血栓形成(Lower extremity deep vein thrombosis,DVT)的影响因素及其预防措施。方法选择2020年1月至2022年7月在本院行THA治疗的88例作为研究对象,分析术后DVT发生的...目的探讨全髋关节置换(Total hip arthroplasty,THA)术后下肢深静脉血栓形成(Lower extremity deep vein thrombosis,DVT)的影响因素及其预防措施。方法选择2020年1月至2022年7月在本院行THA治疗的88例作为研究对象,分析术后DVT发生的影响因素。结果88例THA患者术后发生DVT 33例(37.50%),其余55例(62.50%)患者未发生DVT;单因素分析显示,年龄、假体类型、术中出血量、手术用时、术后卧床时间与THA患者术后DVT发生有关,差异有统计学意义(P<0.05);多因素分析显示,年龄≥60岁、骨水泥型假体、术中出血量>400mL、手术用时>4h、术后卧床时间>4d是THA患者术后DVT发生的高危因素(P<0.05)。结论THA患者术后DVT发生与年龄、假体类型、术中出血量、手术用时、术后卧床时间有关,针对各因素制定相应的预防对策干预,可能减少DVT发生。展开更多
文摘Background: The magnitude of the hyperemic response due to repeated thigh stump exercise on incremental contraction intensity might be useful information in localized exercise tolerance for devising cardiovascular physical therapy for amputees. The effect of exercise on amputated leg blood flow (LBF) may potentially be altered due to voluntary muscle contractions after loss of the lower leg compared with the healthy leg. Case Presentation: A 57-year-old male patient with Burger disease attempted 3 min unilateral repeat/dynamic knee extensor exercise at a target muscle contraction frequency (1 s thigh muscle contraction and 1 s relaxation, 90 repetitions) with each leg <right transtibial amputated leg (AL) using a total surface-bearing prosthesis (TSB) and left non-AL> at six different contraction intensities (rubber resistance belt). Simultaneous measurement of blood velocity/flow (Doppler ultrasound) in the femoral artery, blood pressure, leg vascular conductance (LVC), and peak muscle strength (PMS) were performed during the 3 min exercise period. The maximum voluntary contraction by one-legged isometric knee muscle contraction was 14.7 kg in non-AL and 7.9 kg in the AL with prosthesis. The relative PMS was defined as “PMS/maximum voluntary contraction × 100 (%)”. Pre-exercise LBF was lower in the AL (200 ± 25 ml/min) than the non-AL (275 ± 74 ml/min). Both the non-AL and AL showed good positive linear relationships between absolute-/relative-PMS and LBF or LVC during 30 s at steady-state before the end of the exercise period. Furthermore, there was also similarity seen in the increase rate in LBF and/or LVC for the incremental relative PMS compared with the absolute PMS. Conclusion: In this case, the muscle strength depended on blood flow increase/vasodilation was seen in this “AL” using a TSB prosthesis for repeated dynamic knee extensor exercise. The present amputee’s limb muscle strengthening with the resection stump closely related to the degree of hyperemia in the amputated limb.
文摘目的探讨全髋关节置换(Total hip arthroplasty,THA)术后下肢深静脉血栓形成(Lower extremity deep vein thrombosis,DVT)的影响因素及其预防措施。方法选择2020年1月至2022年7月在本院行THA治疗的88例作为研究对象,分析术后DVT发生的影响因素。结果88例THA患者术后发生DVT 33例(37.50%),其余55例(62.50%)患者未发生DVT;单因素分析显示,年龄、假体类型、术中出血量、手术用时、术后卧床时间与THA患者术后DVT发生有关,差异有统计学意义(P<0.05);多因素分析显示,年龄≥60岁、骨水泥型假体、术中出血量>400mL、手术用时>4h、术后卧床时间>4d是THA患者术后DVT发生的高危因素(P<0.05)。结论THA患者术后DVT发生与年龄、假体类型、术中出血量、手术用时、术后卧床时间有关,针对各因素制定相应的预防对策干预,可能减少DVT发生。