AIM To compared outcomes between the hypothenar fat pad flap(HTFPF) and conventional open carpal tunnel release(COR) in primary carpal tunnel syndrome(CTS). METHODS Forty-five patients(49 hands) were enrolled into the...AIM To compared outcomes between the hypothenar fat pad flap(HTFPF) and conventional open carpal tunnel release(COR) in primary carpal tunnel syndrome(CTS). METHODS Forty-five patients(49 hands) were enrolled into the study from January 2014 to March 2016, 8 patients were excluded. Randomization was conducted in 37 patients(41 hands) by computer generated(Block of four randomization) into COR and HTFPF group. Nerve conduction study(NCS) included distal sensory latency(DSL), distal motor latency(DML), sensory amplitude (S-amp), motor amplitude(M-amp) and sensory nerve conduction velocity(SCV) were examined at 6 and 12 wk after CTR. Levine score, grip and pinch strength, pain [visual analog scale(VAS)], 2-point discrimination(2-PD), Semmes-Weinstein monofilament test(SWM), Phalen test and Tinel's sign were evaluated in order to compare treatment outcomes.RESULTS The COR group, 19 patients(20 hands) mean age 50.4 years. The HTFPF group, 20 patients(21 hands) mean age 53.3 years. Finally 33 patients(36 hands) were analysed, 5 patients were loss follow-up, 17 hands in COR and 19 hands in HTFPF group. NCS revealed significant difference of DSL in HTFPF group at 6 wk(P < 0.05) compared with the COR group. S-amp was significant improved postoperatively in both groups(P < 0.05) but not significant difference between two groups. No significant difference of DML, M-amp and SCV postoperatively in both groups and between two groups. Levine score, pain(VAS), grip and pinch strength, 2-PD, SWM, Phalen test and Tinel's sign were improved postoperatively in both groups, but there was no significant difference between two groups.CONCLUSION There is no advantage outcome in primary CTS for having additional HTFPF procedure in CTR. COR is still the standard treatment. Nevertheless, improvement of DSL and S-amp could be observed at 6 wk postoperatively.展开更多
The heat dissipated pad is made of composite mixing silicon or epoxy resin with thermal conductive inorganic fillers. The heat-dissipation material improves performance as the amount of thermal conductivity filler inc...The heat dissipated pad is made of composite mixing silicon or epoxy resin with thermal conductive inorganic fillers. The heat-dissipation material improves performance as the amount of thermal conductivity filler increases. However, the optimum recipe should be determined by considering the price and pad formability. In this study, high performance thermal pad is made of silicon resin mixed with Al2O3 as a thermally conductive filler. Since Al2O3 is low cost, it can use much filler. Al2O3 has improved slip-ability with organic coating on it to increase the viscosity of the slurry. The same process and the same recipe, could maximize the amount of the filler. As a result, the thermal conductivity is lower by 10%. But the viscosity is reduced by 60%, too. So form-ability is getting priority.展开更多
目的通过不同干预方法,观察犬下腔静脉脂肪垫对窦房结及房室结功能的影响。方法选择16只犬开胸暴露下腔静脉脂肪垫,首先以固定的输出频率(20Hz)连续电刺激下腔静脉脂肪垫30 s,测量刺激前和刺激时窦房结恢复时间(SNRT)、校正SNRT(cSNRT)...目的通过不同干预方法,观察犬下腔静脉脂肪垫对窦房结及房室结功能的影响。方法选择16只犬开胸暴露下腔静脉脂肪垫,首先以固定的输出频率(20Hz)连续电刺激下腔静脉脂肪垫30 s,测量刺激前和刺激时窦房结恢复时间(SNRT)、校正SNRT(cSNRT)及AH、HV、RR间期变化;然后在直视下心外膜射频消融脂肪垫,再测定迷走神经刺激前后上述指标的变化。结果:14只完成试验。当电刺激下腔静脉脂肪垫时,AH间期与刺激前比较明显延长(122.2±12.4 m s vs 82.5±10.3 m s,P<0.05),其余指标未发生明显变化。电刺激通常在2 s内起效,AH间期随刺激电压增加而延长,在刺激停止3 s内恢复。射频消融下腔静脉脂肪垫后,刺激左右颈部迷走神经,SNRT、cSNRT及RR间期与刺激前比较有明显变化(分别为696.4±54.9 m s vs 467.5±45.4 m s;296.3±20.5 m svs 164.5±20.1 m s,400.3±39.1 m s vs 210.1±14.5 m s,P均<0.05),但AH间期及HV间期未发生明显变化。结论:刺激下腔静脉脂肪垫可使房室传导延迟,而不影响窦房结功能。消融下腔静脉脂肪垫可以消除迷走神经对房室结的支配。展开更多
压电换能器是扇区水泥胶结成像测井仪器CBMT(Cement Bond Mapping Tool)的核心部件,其性能优劣直接影响着仪器的测井效果。文章论述了压电换能器在扇区水泥胶结成像测井仪中的应用,介绍了压电换能器的工作原理,分析了其频率特性。总结...压电换能器是扇区水泥胶结成像测井仪器CBMT(Cement Bond Mapping Tool)的核心部件,其性能优劣直接影响着仪器的测井效果。文章论述了压电换能器在扇区水泥胶结成像测井仪中的应用,介绍了压电换能器的工作原理,分析了其频率特性。总结了提高CBMT水泥胶结成像测井仪中极板换能器灵敏度的方法。展开更多
文摘AIM To compared outcomes between the hypothenar fat pad flap(HTFPF) and conventional open carpal tunnel release(COR) in primary carpal tunnel syndrome(CTS). METHODS Forty-five patients(49 hands) were enrolled into the study from January 2014 to March 2016, 8 patients were excluded. Randomization was conducted in 37 patients(41 hands) by computer generated(Block of four randomization) into COR and HTFPF group. Nerve conduction study(NCS) included distal sensory latency(DSL), distal motor latency(DML), sensory amplitude (S-amp), motor amplitude(M-amp) and sensory nerve conduction velocity(SCV) were examined at 6 and 12 wk after CTR. Levine score, grip and pinch strength, pain [visual analog scale(VAS)], 2-point discrimination(2-PD), Semmes-Weinstein monofilament test(SWM), Phalen test and Tinel's sign were evaluated in order to compare treatment outcomes.RESULTS The COR group, 19 patients(20 hands) mean age 50.4 years. The HTFPF group, 20 patients(21 hands) mean age 53.3 years. Finally 33 patients(36 hands) were analysed, 5 patients were loss follow-up, 17 hands in COR and 19 hands in HTFPF group. NCS revealed significant difference of DSL in HTFPF group at 6 wk(P < 0.05) compared with the COR group. S-amp was significant improved postoperatively in both groups(P < 0.05) but not significant difference between two groups. No significant difference of DML, M-amp and SCV postoperatively in both groups and between two groups. Levine score, pain(VAS), grip and pinch strength, 2-PD, SWM, Phalen test and Tinel's sign were improved postoperatively in both groups, but there was no significant difference between two groups.CONCLUSION There is no advantage outcome in primary CTS for having additional HTFPF procedure in CTR. COR is still the standard treatment. Nevertheless, improvement of DSL and S-amp could be observed at 6 wk postoperatively.
文摘The heat dissipated pad is made of composite mixing silicon or epoxy resin with thermal conductive inorganic fillers. The heat-dissipation material improves performance as the amount of thermal conductivity filler increases. However, the optimum recipe should be determined by considering the price and pad formability. In this study, high performance thermal pad is made of silicon resin mixed with Al2O3 as a thermally conductive filler. Since Al2O3 is low cost, it can use much filler. Al2O3 has improved slip-ability with organic coating on it to increase the viscosity of the slurry. The same process and the same recipe, could maximize the amount of the filler. As a result, the thermal conductivity is lower by 10%. But the viscosity is reduced by 60%, too. So form-ability is getting priority.
文摘目的通过不同干预方法,观察犬下腔静脉脂肪垫对窦房结及房室结功能的影响。方法选择16只犬开胸暴露下腔静脉脂肪垫,首先以固定的输出频率(20Hz)连续电刺激下腔静脉脂肪垫30 s,测量刺激前和刺激时窦房结恢复时间(SNRT)、校正SNRT(cSNRT)及AH、HV、RR间期变化;然后在直视下心外膜射频消融脂肪垫,再测定迷走神经刺激前后上述指标的变化。结果:14只完成试验。当电刺激下腔静脉脂肪垫时,AH间期与刺激前比较明显延长(122.2±12.4 m s vs 82.5±10.3 m s,P<0.05),其余指标未发生明显变化。电刺激通常在2 s内起效,AH间期随刺激电压增加而延长,在刺激停止3 s内恢复。射频消融下腔静脉脂肪垫后,刺激左右颈部迷走神经,SNRT、cSNRT及RR间期与刺激前比较有明显变化(分别为696.4±54.9 m s vs 467.5±45.4 m s;296.3±20.5 m svs 164.5±20.1 m s,400.3±39.1 m s vs 210.1±14.5 m s,P均<0.05),但AH间期及HV间期未发生明显变化。结论:刺激下腔静脉脂肪垫可使房室传导延迟,而不影响窦房结功能。消融下腔静脉脂肪垫可以消除迷走神经对房室结的支配。
文摘压电换能器是扇区水泥胶结成像测井仪器CBMT(Cement Bond Mapping Tool)的核心部件,其性能优劣直接影响着仪器的测井效果。文章论述了压电换能器在扇区水泥胶结成像测井仪中的应用,介绍了压电换能器的工作原理,分析了其频率特性。总结了提高CBMT水泥胶结成像测井仪中极板换能器灵敏度的方法。
