Promising application of a new ulnar nerve compound muscle action potential measurement montage in amyotrophic lateral sclerosis:a prospective cross-sectional study

Previous studies have shown that ulnar nerve compound muscle action potential recorded by the conventional“belly-tendon”montage does not accurately and completely reflect the action potential of the ulnar nerve dominating the abductor digiti minimi muscle due to the effects of far-field potentials of intrinsic hand muscles.A new method of ulnar nerve compound muscle action potential measurement was developed in 2020,which adjusts the E2 electrode from the distal tendon of the abductor digitorum to the middle of the back of the proximal wrist.This new method may reduce the influence of the reference electrode and better reflect the actual ulnar nerve compound muscle action potential.In this prospective cross-sectional study,we included 64 patients with amyotrophic lateral sclerosis and 64 age-and sex-matched controls who underwent conventional and novel ulnar nerve compound muscle action potential measurement between April 2020 and May 2021 in Peking University Third Hospital.The compound muscle action potential waveforms recorded by the new montage were unimodal and more uniform than those recorded by traditional montage.In the controls,no significant difference in the compound muscle action potential waveforms was found between the traditional montage and new montage recordings.In amyotrophic lateral sclerosis patients presenting with abductor digiti minimi spontaneous activity and muscular atrophy,the amplitude of compound muscle action potential-pE2 was significantly lower than that of compound muscle action potential-dE2(P<0.01).Using the new method,damaged axons were more likely to exhibit more severe amplitude decreases than those measured with the traditional method,in particular for patients in early stage amyotrophic lateral sclerosis.In addition,the decline in compound muscle action potential amplitude measured by the new method was correlated with a decrease in Revised Amyotrophic Lateral Sclerosis Functional Rating Scale scores.These findings suggest that the new ulnar nerve compound muscle action potential measurement montage reduces the effects of the reference electrode through altering the E2 electrode position,and that this method is more suitable for monitoring disease progression than the traditional montage.This method may be useful as a biomarker for longitudinal follow-up and clinical trials in amyotrophic lateral sclerosis.

Effects of 2-[p-(Dimethylamino)Styrl] PyridineMethiodide on Slow Response Action Potentialand Slow lnward Current of Guinea PigPapillary Muscles

The effects of 2-[p-(Dimethylamino)styryl] pyridine methiodide(DSPM)on slow response action potential(SRAP)and slow inward current(Isi) of guinea pig papillary muscles were studied by intracellular microelectrodes and voltage clamp techniques.The APA and V_(max) of SRAP induced by high K￣+were decreased after 50 min of perfusion with DSPM solu- tion. Isi was suppressed from a peak value of8.8± 1.6μA to 5.7± 1.8μA, The results indicated that DSPM has a selective blocking effect on calcium channel.

EFFECTS OF DISMERINONE ON HIGH K~＋ DEPOLARIZED SLOW RESPONSE ACTION POTENTIALS IN GUINEA PIG PAPILLARY MUSCLES

The effects of dismerinone (DMR), a derivative of milrinone, on high K+ depolarized slow response action potentials (APs) and intracellular cAMP levels were studied in guinea pig papillary muscles. DMR induced slow APs in high K+ depolorized guinea pig papillary muscles and increased APA, Vmaxand APD50 of the slow APs in dose dependent way ; cAMP levels in same preparations were elevated by DMR. These effects of DMR are similar to isoprenaline (ISO). Bead adrenocepter blocker propranolol had no influence on DMR effect. Overall, the results from this study suggested that effects of DMR were not related to Beta adrenocepter, and might be related to its inhibiting phosphodiesterase Ⅲ(PDE Ⅲ) action.

THE INFLUENCE OF SAPONINS OF PANAX QUINQUEFOLIUM LEAF AND STEM ON THE SLOW ACTION POTENTIALS IN MYOCARDIUM

The effects of Saponins of Panax Quinquefolium Leaf and Stem(SPQLS)were evaluatedin the rabbit sinus node and in the guinea pig papillary muscles both showing slow responses in high[k+].and being exposed to 0.3 μmol/L verapamil using conventional microelcctrode technique.Inthe sinus node, SPQLS 100 mg/L decreased the APA and Vmax.At the concentration of 200 mg/L,in addition to further depressing the upotroke,SPQIS decreased the SP4,shortened the APD and prolonged the SCL.In the guinea Pig papillary muscle,SPQLS shortened the APD and decreased theAPA as well as Vmax in high[k+3].When verapamil was exposed to the normal Tyrode's solution,SPQLS depressed the upstroke without-affecting the APD in the guinea pig papillary muscle.Thesefindings suggest that SPQLS exerted a blockade effect on the transmembrane Ca2+ influx and Na+ influx in myocardium.

Compound muscle action potential(CMAP)scan examination of paretic and contralateral muscles reveals motor unit alterations after stroke

This study presents a novel compound muscle action potential(CMAP)examination of motor unit changes in paretic muscle post stroke.CMAP scan of the first dorsal interosseous(FDI)muscle was performed bilaterally in 16 chronic stroke subjects.Various parameters were derived from the CMAP scan to examine paretic muscle changes,including CMAP amplitude,D50,step index(STEPIX)and amplitude index(AMPIX).A significant decrease in CMAP amplitude and STEPIX was observed in paretic muscles compared with contralateral muscles(CMAP amplitude:paretic(9.0±0.5)mV,contralateral(11.3±0.9)mV,P=0.024;STEPIX:paretic 101.2±7.6,contralateral 121.9±6.5,P=0.020).No significant difference in D50 and AMPIX was observed between the paretic and contralateral sides(P>0.05).The findings revealed complex paretic muscle changes including motor unit degeneration,muscle fiber denervation,reinnervation and atrophy,providing useful insights to help understand neuromuscular mechanisms associated with weakness and other functional deterioration post stroke.The CMAP scan experimental protocols and the applied processing methods are noninvasive,convenient,and automated,offering practical benefits for clinical application.

Effects of dauricine,quinidine,and sotalol on action potential duration of papillary muscles in vitro

目的：观察蝙蝠葛碱对豚鼠乳头状肌的动作电位是否具有使用依赖性特征，并与奎尼丁、索他洛尔作平行比较．方法：利用细胞内微电极技术记录豚鼠乳头状肌跨膜动作电位．结果：蝙蝠葛碱２０μｍｏｌ·Ｌ－１能明显延长乳头状肌跨膜动作电位时程，在刺激周长为２００，３００，４００，６００，８００，１０００，２０００ｍｓ时，其延长动作电位时程的百分率分别为２２±８，１１±６，９±５，７±５，６±３，４３±２８，４５±２８，蝙蝠葛碱延长动作电位时程作用于刺激周期较短时作用明显，呈使用依赖性特征．而奎尼丁１μｍｏｌ·Ｌ－１和索他洛尔１０μｍｏｌ·Ｌ－１延长动作电位时程作用随刺激周期延长而增强，呈现逆向使用依赖性特征．结论：蝙蝠葛碱使用依赖性延长豚鼠乳头状肌动作电位时程．

Effects of sex hormones on action potential and contraction of guinea pig papillary muscle

目的：研究雌二醇（Ｅｓｔ）、睾酮（Ｔｅｓ）和孕酮（Ｐｒｏ）对豚鼠心室乳头状肌动作电位（ＡＰ）和收缩活动的影响．方法：经典的玻璃微电极方法和心肌收缩描记方法．结果：Ｅｓｔ在较低浓度（１μｍｏｌ·Ｌ－１）即明显减慢动作电位０期最大除极速率（Ｖｍａｘ）．随着浓度增加，还可延长动作电位时程（ＡＰＤ５０，ＡＰＤ９０）和有效不应期（ＥＲＰ）．并呈现负性肌力作用，使最大收缩张力（Ｐｍａｘ）降低，张力产生速率（ｄＴ／ｄｔ）减慢．Ｔｅｓ在较高浓度（１００μｍｏｌ·Ｌ－１－１ｍｍｏｌ·Ｌ－１）可延长ＡＰＤ９０、ＥＲＰ，降低Ｐｍａｘ和ｄＴ／ｄｔ．而Ｐｒｏ对心肌电生理活动及收缩均无明显影响．结论：雌激素延长豚鼠乳头状肌动作电位，抑制其收缩活动．

Effect of Cerium on Cardiac Muscle of Rat and Guinea Pig

The effect of Ce3+ on cardiac muscle of rat and guinea pig was studied. In vitro, 0.05 mmol·L-1 solution of Ce3+ inhibited the contraction of guinea pig atria. The change of action potential duration(APD) of guinea pig papillary muscle exposed to 0.4 mmol·L-1 Ce3+ was significant, and those exposed to 0.1 and 0. 2 mmol·L-1 Ce3+ were not significant. In vivo, compared with the control group, the APD for rat cardiac muscle after long-term feed on Ce3+ was significantly delayed in high dose, and that was not significantly delayed in low dose. The results suggest that Ce3+ with long-term high dose intake might affect the influx of Ca2+, Na+ and outflow of K+ for rat cardiac muscle.

Inhibitory actions of polysaccharide sulfateonaction potentials and contraction of papilary muscles inguinea pigs

目的：观察藻酸双酯钠（ＰＳＳ）对豚鼠乳头状肌动作电位和收缩力（ＦＣ）的影响．方法：利用细胞内微电极技术记录豚鼠乳头状肌的快反应动作电位（ＦＡＰ）和慢反应动作电位（ＳＡＰ）．结果：ＰＳＳ（≥５０ｍｇ·Ｌ－１）浓度依赖性地使ＦＣ减弱和ＦＡＰ的动作电位时程（ＡＰＤ）缩短，但对静息电位和动作电位幅度（ＡＰＡ）及０期最大除极速率（Ｖｍａｘ）均无显著影响．ＰＳＳ（≥１５ｍｇ·Ｌ－１）浓度依赖性地使ＢａＣｌ２诱发的ＳＡＰ的Ｖｍａｘ和ＡＰＡ降低，ＡＰＤ缩短，在台氏液中加入异丙肾上腺素１μｍｏｌ·Ｌ－１后，各项参数恢复正常．ＰＳＳ（≥１５ｍｇ·Ｌ－１）浓度依赖性地使异丙肾上腺素诱发的ＳＡＰ的ＡＰＡ降低，ＡＰＤ缩短，提高细胞外Ｃａ２＋浓度后各项参数均恢复正常．结论：ＰＳＳ选择性抑制慢内向电流．

ELECTROPHYSIOLOGICAL EFFECTS OF TETRAHYDROPALMATINE ON CANINE PURKINJE FIBER AND VENTRICULAR MUSCLE IN VITRO

The cellular electrophysiologic properties of a new antiarrkythmic substance,tetrahydropalmatine(TRP),were studied in isolated canine cardiac Purldnje fibers and ventricular muscles.In lharkinjc fibers,the shortening of APD50 produced by THP was concentration dependent,APD90was shortened only at higher concentrations of THP,APA and Vmax were decreased by increasing theTHP concentration to 100 and 300 μmol/L. In Veutricular muscles,THP,at higher Concentration,shortened APDs,and APD90 The reductions of Vmax and APA were significant only at highest concentration,300 μmol/L,ERP was relatively prolonged in both Purldnje fibers and ventricular muscles.These studies suggest that THP may inhibit Ca2+ and Na+ movement across the membrane of myocardlal cells.

Electrophysiological changes of Papillary Muscles in Guinea Pigs with iron deficiency anemia and heart failure

Objective:To investigate the changes of left ventricular papillary muscle action potentials in guinea pigs with iron deficiency anemia and heart failure.Methods:A total of 20 cases of iron deficiency anemia with heart failure were treated with experimental group and 10 normal guinea pigs as control group. Blood samples were collected to determine hemoglobin content, red blood cell number and whole blood iron index, and the changes of cardiac function and hemodynamics were detected by 6240 biological signal collection system to determine whether the model was successful or not, Intracellular microelectrode technique was used to determine the action potentials of the papillary muscles in the model group and the control group. the potential amplitudes (APA), overshoot values (APA), maximum depolarization rate (Vmax), 20 % of repolarization, 50 % and 90 % of repolarization (APD20, APD50 and APD90 ) and the average velocity of repolarization were measured. Compare statistical difference between the model group and the control group.Results: 14 cases of model group survived completely, compared with control group, APD50 and APD90 prolonged, and the average velocity decreased.Conclusions: the action potential repolarization duration in the guinea pig papillary muscle of iron deficiency anemia with heart failure is prolonged, and the average repolarization velocity is slow.

Effects of metallothionein on action potentials of anoxic and reoxygenated papillary muscles of guinea pigs

目的：研究金属硫蛋白（ＭＴ）对缺氧和复氧豚鼠乳头状肌动作电位的影响．方法：利用标准的玻璃微电极技术，将标本暴露于缺氧液（低氧，高钾，无糖，ｐＨ６８）和ＭＴ．结果：ＭＴ（００２ｍｍｏｌ·Ｌ－１）对正常豚鼠乳头状肌的动作电位无影响；单纯将标本暴露于缺氧液，明显使ＡＰＤ２０，ＡＰＤ５０和ＡＰＤ９０缩短，增高ＲＰ水平，降低ＡＰＡ及Ｖｍａｘ；缺氧液加入ＭＴ（００２ｍｍｏｌ·Ｌ－１）后，则使缺氧期间的ＲＰ，ＡＰＡ和Ｖｍａｘ的改变恢复正常，但ＡＰＤ进一步缩短；同时发现ＭＴ减少复氧期间导致的自律性的发生率．结论：ＭＴ具有钙调节剂的特征．

多部位肌肉面神经电图检测对贝尔麻痹患儿面神经功能及预后的评估价值

目的探讨面神经电图(ENoG)检测多块面肌方法在贝尔麻痹(BP)患儿面神经功能评估及早期预测预后中的价值。方法选取2020年6月至2022年9月在昆明医科大学附属儿童医院诊治的90例BP患儿,首诊时应用ENoG检测额肌、鼻肌、口轮匝肌、上眼轮匝肌及下眼轮匝肌等5块面肌的ENoG值及复合肌肉动作电位(CMAP)波幅,并采用House Brackmann分级系统(HBGS)对患儿的面神经功能进行评估,随访至完全恢复或至首诊后6个月,通过HBGS再次评估患儿的面神经功能。分析比较不同面肌的ENoG值在各年龄组(婴幼儿组、学龄前儿童组、学龄儿童组)及各预后组(完全恢复组、不完全恢复组)间的差异,以及与首诊HBGS评级的相关性。绘制受试者工作特征曲线并计算曲线下面积(AUC),以评估早期不同面肌的ENoG值对BP患儿预后的价值。结果首诊时患儿各部位ENoG值越低,则对应的首诊HBGS评级越高(P<0.05);鼻肌、上眼轮匝肌及下眼轮匝肌表现更显著(P<0.01)。首诊时的鼻肌、上眼轮匝肌及下眼轮匝肌的ENoG值显示,完全恢复组的秩平均值高于不完全恢复组(P<0.05);首诊时鼻肌、上眼轮匝肌及下眼轮匝肌的ENoG值可用于评估BP患儿的预后,AUC值分别为0.732、0.695及0.796(P<0.05);将上眼轮匝肌与鼻肌ENoG值联合、上眼轮匝肌与下眼轮匝肌ENoG值联合、下眼轮匝肌与鼻肌ENoG值联合,准确性进一步提升,AUC分别为0.740、0.799及0.806(P<0.01);首诊HBGSⅡ~Ⅲ级患儿的预后明显好于Ⅳ~Ⅴ级患儿(P<0.01)。结论BP发病初期鼻肌、上眼轮匝肌及下眼轮匝肌的ENoG值与HBGS评级一样可反映患儿病情的严重程度,较低的ENoG值提示BP可能恢复不完全,增加ENoG面肌检测部位可提高BP患儿预后评估的准确性。

六价铬对牛蛙心脏、骨骼肌和坐骨神经干生理功能的影响

【目的】从电生理学角度研究六价铬对牛蛙心脏、腓肠肌和坐骨神经干动作电位的影响,探讨六价铬的毒性作用机制。【方法】将不同浓度重铬酸钾溶液通过腹腔注射和离体心脏灌流法处理牛蛙心脏,测定六价铬对在体和离体心脏心率和收缩力的影响。用重铬酸钾溶液浸润好的纱布包裹腓肠肌,测定腓肠肌收缩力变化。采用细胞外电极引导法,测定六价铬对坐骨神经干动作电位传导速度的影响。【结果】结果显示:重铬酸钾对心率和收缩力具有抑制作用,机制分别与六价铬抑制T型钙通道活性和L型钙通道活性有关;然而1 mg/L铬对在体蛙心作用15 min至30 min后,心率增加,可能是“毒物兴奋效应”所致;0.001 mg/L至10 mg/L六价铬对腓肠肌收缩力具有浓度依赖性增强作用,表现为正性变力效应,可能是“毒物兴奋效应”的结果;100 mg/L六价铬抑制了腓肠肌收缩力,表现为负性变力效应,机制与六价铬对兰尼碱受体(Ryanodine receptor,RyR)的抑制作用有关;六价铬以质量浓度和时间依赖性降低了神经干动作电位传导速度,机制与六价铬对电压门控Na+通道产生的失活作用有关。【结论】六价铬对心肌、骨骼肌和神经均具有毒性作用,结果可为六价铬的毒性作用研究提供一定的电生理实验依据。

三线针法联合祛风愈瘫丸治疗周围性面瘫的临床研究

目的:观察三线针法联合口服祛风愈瘫丸与单纯三线针法治疗周围性面瘫的临床疗效。方法:选取2020年8月至2021年8月海南省三亚市中医院针灸科收治诊断为周围性面瘫的患者70例作为研究对象,采用简单随机化法将患者随机分为对照组和观察组,每组35例。对照组采用单纯三线针法治疗,观察组采用三线针法联合口服祛风愈瘫丸治疗。1周为1个疗程,连续治疗4个疗程;分别观察2组患者的治疗效果、治疗前后的House-Brackmann(H-B)分级、Sunnybrook(S-B)评分、复合肌肉动作电位(CMAP)潜伏期和波幅变化、面部残疾指数(FDI)评分的身体功能指数(FDIp)和社会功能指数(FDIs)比较及血清内皮素(ET)、血清一氧化氮(NO)水平变化。结果:观察组的疗效优于对照组疗效(P<0.05)。治疗后2组患者H-B(P<0.05)、S-B(P<0.001)及FDIp(P<0.001)评分较治疗前提高,且观察组患者显著高于对照组,FDIs评分较治疗前降低,且观察组显著低于对照组(P<0.05);治疗后2组患者CMAP潜伏期均较治疗前明显缩短、波幅明显延长,且观察组较对照组比较潜伏期明显缩短(P<0.01)、波幅明显延长(P<0.001)。治疗后2组患者血清ET水平显著低于治疗,血清NO水平明显高于治疗前,(P<0.001);且观察组血清ET水平明显低于对照,血清NO水平显著高于对照组,(P<0.001)。结论:三线针法联合祛风愈瘫丸对周围性面瘫疗效显著,可以显著改善患者的面神经功能、肌电图指标及血清ET、NO水平,有临床推广应用价值。

Evaluation of the Efficiency of the Magicramp® Device for Reducing Cramps Resulting from Oncological Treatments: “Double-Blind, Randomized Clinical Trial”

We identified that oncological treatments in general (chemotherapies, immunotherapies and radiotherapies) frequently cause peripheral neuropathy, including cramps, characterized by excess protons due to metabolic and neuronal factors, such as sudden changes in pH, uremia and aspects that affect neuromotor functions. Such situations and others like them are often neglected in treatment, which naturally concerns itself with the main problem: Cancer. Sometimes toxic solutions are implemented that have comorbid side effects, such as duloxetine (standard treatment). Based on monitoring of cancer patients who used the non-toxic product, called “Magicramp® Electrostatic Charge Reduction Cushion” (MECRC), approved in Europe more than 10 years ago, we carried out a controlled test in Brazil. In this clinical trial, we hypothesized that reducing excessive ionic charges (electrostatic charge), which is one of the side effects often described in the literature as “Chemotherapy-Induced Peripheral Neuropathy” (CIPN), would decrease or eliminate cramping, under the hypothesis that such elimination would prevent or attenuate muscular vulnerability to action impulses, and increase the power of relaxation through the same mechanism. In this double-blind and randomized clinical trial, 40 (forty) adult patients with muscle cramps caused by oncological treatments were tested, evaluating the degree of efficiency of the product that aims to reduce muscle cramps, by eliminating and/or reducing excess loads electrostatic ionic. Data from the clinical research conducted in this study are available online at https://doi.org/10.7910/DVN/QUS94U.

Bioelectrochemical control mechanism with variable-frequency regulation for skeletal muscle contraction-Biomechanics of skeletal muscle based on the working mechanism of myosin motors(Ⅱ)

This paper presents a bioelectrochemical model for the activation of action potentials on sarcolemma and variation of Ca2+ concentration in sarcomeres of skeletal muscle fibers.The control mechanism of muscle contraction generated by collective motion of molecular motors is elucidated from the perspective of variable-frequency regulation,and action potential with variable frequency is proposed as the control signal to directly regulate Ca2+ concentration and indirectly control isometric tension.Furthermore,the transfer function between stimulation frequency and Ca2+ concentration is deduced,and the frequency domain properties of muscle contraction are analyzed.Moreover the conception of "electro-muscular time constant" is defined to denote the minimum delay time from electric stimulation to muscle contraction.Finally,the experimental research aiming at the relation between tension and stimulation frequency of action potential is implemented to verify the proposed variable-frequency control mechanism,whose effectiveness is proved by good consistence between experimental and theoretical results.

针灸联合表情肌功能康复训练治疗面神经麻痹的疗效及对面神经功能恢复的影响

目的:探讨针灸联合表情肌功能康复训练对面神经麻痹患者的疗效及面神经功能恢复的影响。方法:选择2016年1月~2021年3月安徽天长市中医院收治的60例面神经麻痹患者为研究对象,随机均分为对照组和观察组,对照组给予针灸治疗,观察组采用针灸联合表情肌功能康复训练,两组均治疗4周。比较两组临床疗效、治疗前后患侧面神经肌电检测[面神经复合肌肉动作电位(CMAP)波幅、瞬目反射R1潜伏期、肌电图运动单位束颤波发生率]、简易面神经功能评价量表(SFGS)评分及不良反应发生情况。结果:观察组治疗总有效率96.67%,高于对照组的80.00%(P<0.05);与治疗前比较,治疗后两组CMAP波幅均升高,且观察组高于对照组(P<0.05);与治疗前比较,治疗后两组R1潜伏期及束颤波发生率均降低,且观察组R1潜伏期短于对照组(P<0.05);治疗后两组束颤波发生率比较无统计学差异(P>0.05);与治疗前比较,治疗后两组SFGS量表中眼裂闭合评分、口角偏斜评分均降低,且观察组低于对照组(P<0.05)。治疗期间及治疗后两组均无明显不良反应发生。结论:针灸联合表情肌功能康复训练对面神经麻痹患者疗效显著,可明显改善患者的相关症状与体征,有效恢复患者面神经功能,且不会增加不良反应的发生。

肌皮神经损伤后屈肘肌力与针极肌电图指标的相关性

目的研究肌皮神经损伤者的屈肘肌力变化及其与针极肌电图指标的相关性。方法收集单侧臂丛神经损伤(累及肌皮神经)致屈肘肌力降低案例30例,根据Lovett肌力分级标准进行徒手肌力评定,并将30例受试者分为A组(伤侧徒手肌力1级和2级,16例)和B组(伤侧徒手肌力3级和4级,14例)。对所有受试者的伤侧和健侧肱二头肌行针极肌电图检测。记录肱二头肌复合肌肉动作电位(compound muscle action potential,CMAP)的潜伏期和波幅。受试者进行最大随意收缩时,记录募集反应类型以及募集电位的平均转折数和平均波幅,并采用microFET 2便携式肌力测试仪检测屈肘定量肌力。计算残存屈肘肌力百分比(伤侧与健侧定量肌力的比值)。比较各针极肌电图指标、定量肌力、残存屈肘肌力百分比在两组之间和组内伤侧与健侧之间的差异。分别分析屈肘徒手肌力分级、定量肌力与针极肌电图指标的相关性。结果肌皮神经损伤后B组的伤侧残存屈肘肌力百分比为23.43%,A组的伤侧残存屈肘肌力百分比为4.13%。伤侧徒手肌力分级与募集反应类型相关,相关系数为0.886(P<0.05)。伤侧定量肌力与CMAP潜伏期、波幅以及募集电位的平均转折数和平均波幅均相关,相关系数分别为-0.528、0.588、0.465、0.426(P<0.05)。结论残存屈肘肌力百分比可作为肌力分级的依据,针极肌电图指标的综合分析可用于推断屈肘定量肌力。

神经束膜吻合术治疗腕部尺神经损伤的效果观察

目的观察神经束膜吻合术治疗腕部尺神经损伤的效果。方法104例腕部尺神经损伤患者随机分为两组,各52例。对照组应用神经外膜吻合术治疗,观察组应用神经束膜吻合术治疗。比较两组的治疗效果以及尺神经传导速度、复合肌肉动作电位波幅。结果观察组的优良率为96.15%,显著高于对照组的76.92%(P<0.05)。术后3、6、12个月,两组的尺神经传导速度和复合肌肉动作电位波幅均显著高于术前,且观察组均显著高于对照组(P<0.05)。结论神经束膜吻合术治疗腕部尺神经损伤的效果显著,可有效提高患者术后尺神经传导速度和复合肌肉动作电位波幅。