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Stubborn Hypoxia in Neonates with D-Transposition of the Great Arteries after Arterial Switch Operation: Central Sleep Apnea as the Cause and Potential Indicator of Brain Immaturity
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作者 Camden L.Hebson Kyle Bliton +4 位作者 Amr Y.Hammouda Kaitlyn Barr W.Hampton Gray Mohini Gunnett Waldemar F.Carlo 《Congenital Heart Disease》 SCIE 2024年第2期185-195,共11页
D-transposition of the great arteries(d-TGA)is surgically repaired with the arterial switch operation(ASO)with excellent results,however short and long-term morbidities still develop including neurocognitive delay.Cli... D-transposition of the great arteries(d-TGA)is surgically repaired with the arterial switch operation(ASO)with excellent results,however short and long-term morbidities still develop including neurocognitive delay.Clinically significant central sleep apnea is uncommon in non-premature infants,but when present indicates immature autonomic control of respiration likely due to a neurologic disorder.We report the unanticipatedfinding of central sleep apnea in four-term neonates with d-TGA after uncomplicated ASO,with the short-term complication of delayed hospital discharge and long-term concerns regarding this early marker of brain immaturity and its hindrance to normal development.Within this report,we will review each patient’s clinical course and then examine the literature on pediatric central sleep apnea,neurodevelopmental outcomes after ASO,and the important overlap of these entities in the care of patients going forward. 展开更多
关键词 transposition congenital heart disease sleep apnea POLYSOMNOGRAPHY
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Transposition of the lingual thyroid gland to the submandibular region through a submandibular approach:A case report
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作者 Yu-Ting Yin Chao Gui 《World Journal of Clinical Cases》 SCIE 2024年第21期4794-4801,共8页
BACKGROUNDEctopic thyroid at the base of the tongue is a rare congenital condition, and it iseven rarer to have clinical symptoms and require surgical intervention. Thisdisease is easily misdiagnosed preoperatively. T... BACKGROUNDEctopic thyroid at the base of the tongue is a rare congenital condition, and it iseven rarer to have clinical symptoms and require surgical intervention. Thisdisease is easily misdiagnosed preoperatively. This article reports the diagnosis,surgical treatment, and follow-up of a case of lingual thyroid.CASE SUMMARYThe patient was a 54-year-old woman who presented with laryngeal foreign bodysensation and dysphagia for 20 d. The lingual thyroid was considered for generalexamination, and surgery was performed to transpose the lingual thyroid to theright submaxillary region. Pathological analysis confirmed thyroid tissue. Thepatient experienced complete remission after surgery, but developed hypothyroidismand required thyroid hormone replacement therapy, and her thyroidfunction gradually recovered over time.CONCLUSIONWe report a rare case of lingual thyroid with marked laryngeal foreign body sensationand dysphagia. Symptoms were completely relieved by transposition surgerybut postoperative hypothyroidism developed. 展开更多
关键词 Lingual thyroid DYSPHAGIA transposition SURGERY Case report
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Case Report: Surgical Correction of Transposition of the Great Arteries with Aortopulmonary Window
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作者 Qiqi Shi Xuan Lei +1 位作者 Wenbo Zhang Ming Ye 《Congenital Heart Disease》 SCIE 2024年第3期275-278,共4页
Introduction:Transposition of the great arteries(TGA)with aortopulmonary window is a rare type of congenital heart disease with limited experience.We reported a neonate aged 25 days receiving the arterial switch opera... Introduction:Transposition of the great arteries(TGA)with aortopulmonary window is a rare type of congenital heart disease with limited experience.We reported a neonate aged 25 days receiving the arterial switch operation and assisted with extracorporeal membrane oxygenation.Conclusion:TGA with aortopulmonary window can be safely correctly with the arterial switch operation. 展开更多
关键词 transposition of the great arteries aortopulmonary window arterial switch operation
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Long head of biceps tendon transposition for massive and irreparable rotator cuff tears:A systematic review and meta-analysis 被引量:1
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作者 Ren-Wen Wan Zhi-Wen Luo +4 位作者 Yi-Meng Yang Han-Li Zhang Jia-Ni Chen Shi-Yi Chen Xi-Liang Shang 《World Journal of Orthopedics》 2023年第11期813-826,共14页
BACKGROUND Superior capsular reconstruction(SCR)with long head of biceps tendon(LHBT)transposition was developed to massive and irreparable rotator cuff tears(MIRCTs);however,the outcomes of this technique remain uncl... BACKGROUND Superior capsular reconstruction(SCR)with long head of biceps tendon(LHBT)transposition was developed to massive and irreparable rotator cuff tears(MIRCTs);however,the outcomes of this technique remain unclear.AIM To perform a systematic review of biomechanical outcomes and a meta-analysis of clinical outcomes after LHBT transposition for MIRCTs.METHODS We performed a systematic electronic database search on PubMed,EMBASE,and Cochrane Library.Studies of SCR with LHBT transposition were included according to the inclusion and exclusion criteria.Biomechanical studies were assessed for main results and conclusions.Included clinical studies were evaluated for quality of methodology.Data including study characteristics,cohort demographics,and outcomes were extracted.A meta-analysis was conducted of the clinical outcomes.RESULTS According to our inclusion and exclusion criteria,a total of six biomechanical studies were identified and reported an overall improvement in subacromial contact pressures and prevention of superior humeral migration without limiting range of motion(ROM)after LHBT transposition for MIRCTs.A total of five clinical studies were included in the meta-analysis of LHBT transposition outcomes,consisting of 253 patients.The results indicated that compared to other surgical methods for MIRCTs,LHBT transposition had advantages of more significant improvement in ROM(forward flexion mean difference[MD]=6.54,95%confidence interval[CI]:3.07-10.01;external rotation[MD=5.15,95%CI:1.59-8.17];the acromiohumeral distance[AHD][MD=0.90,95%CI:0.21-1.59])and reducing retear rate(odds ratio=0.27,95%CI:0.15-0.48).No significant difference in American Shoulder and Elbow Surgeons score,visual analogue scale score,and University of California at Los Angles score was demonstrated between these two groups for MIRCTs.CONCLUSION In general,SCR with LHBT transposition was a reliable and economical technique for treating MIRCTs,both in terms of biomechanical and clinical outcomes,with comparable clinical outcomes,improved ROM,AHD,and reduced the retear rates compared to conventional SCR and other established techniques.More high-quality randomized controlled studies on the long-term outcomes of SCR with LHBT transposition are required to further assess. 展开更多
关键词 Massive and irreparable rotator cuff tears Long head of biceps tendon transposition Rotator cuff repair Superior capsular reconstruction
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Effectiveness of modified inferior oblique muscle belly transposition for V-pattern exotropia combined with mild to moderate inferior oblique muscle overaction
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作者 Yang Hao Ming Zhang +2 位作者 Yue Bian Jing-Ming Li Li Qin 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第3期396-401,共6页
AIM:To investigate the effectiveness of a modified inferior oblique muscle belly transposition for treatment of V-pattern exotropia combined with mild to moderate inferior oblique muscle overaction.METHODS:Thirteen ca... AIM:To investigate the effectiveness of a modified inferior oblique muscle belly transposition for treatment of V-pattern exotropia combined with mild to moderate inferior oblique muscle overaction.METHODS:Thirteen cases(23 affected eyes)of V-pattern exotropia with inferior oblique muscle overaction(+or++)who underwent the modified inferior oblique muscle belly transposition procedure were retrospectively reviewed.The amount of V-pattern,grade of inferior oblique overaction,degree of vertical strabismus,abnormal head posture,and the fovea-disc angle were evaluated before and after surgery.RESULTS:The V-pattern was corrected in all cases,and the amount of V-pattern reduced by 17.85±5.13 prism diopter(PD)on average(t=16.07,P<0.001).The surgical cure rate for mild to moderate inferior oblique muscle overaction was 87.0%(20/23).The degree of the foveadisc angle has a mean reduction of 5.45°±2.87°(t=3.95,P=0.003)after surgery.The mean vertical deviation in 5 cases with a small-angle hypertropia(5.23±3.06 PD)in the primary position reduced by 3.15±1.86 PD(t=6.10,P<0.001).No serious complications were observed.CONCLUSION:The modified inferior oblique muscle belly transposition procedure can effectively treat mild to moderate inferior oblique overaction and relieve the V-pattern,which is safe and easy to perform. 展开更多
关键词 inferior oblique muscle belly transposition V-pattern exotropia inferior oblique muscle overaction
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Modified inferior oblique anterior transposition for dissociated vertical deviation combined with superior oblique palsy:A case report
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作者 Yao Zong Ze Wang +1 位作者 Wen-Lan Jiang Xian Yang 《World Journal of Clinical Cases》 SCIE 2023年第12期2796-2802,共7页
BACKGROUND Inferior oblique anterior transposition(IOAT)has emerged as an effective surgery in the management of dissociated vertical deviation(DVD)combined with superior oblique palsy(SOP).Traditional IOAT usually pr... BACKGROUND Inferior oblique anterior transposition(IOAT)has emerged as an effective surgery in the management of dissociated vertical deviation(DVD)combined with superior oblique palsy(SOP).Traditional IOAT usually provides satisfactory primary position alignment and simultaneously restricts the superior floating phenomenon.However,it also increases the risk of the anti-elevation syndrome and narrowing of the palpebral fissure in straight-ahead gaze,especially after the unilateral operation.CASE SUMMARY We report the outcomes of the modified unilateral IOAT in two patients with unilateral DVD combined with SOP.The anterior-nasal fibers of the inferior oblique muscle were attached at 9 mm posterior to the corneal limbus along the temporal board of the inferior rectus muscle,the other fibers were attached a further 5 mm temporal to the anterior-nasal fibers.Postoperatively,both hypertropia and floating were improved,and no obvious complications occurred.CONCLUSION In these cases,the modified unilateral IOAT was an effective and safe surgical method for treating DVD with SOP. 展开更多
关键词 Anterior transposition Inferior oblique muscles Dissociated vertical deviation Superior oblique palsy Anti-elevation syndrome Case report
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Anatomic Correlates of Mitral Systolic Anterior Motion in Transposition of the Great Arteries Following Atrial Switch Operation
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作者 Norman Aiad Mark V.Sherrid +7 位作者 Adam J.Small Youssef Elnabawi Jodi Feinberg Leon Axel Ralph Mosca T.K.Susheel Kumar Michael Argilla Dan G.Halpern 《Congenital Heart Disease》 SCIE 2023年第3期267-277,共11页
Introduction:We sought to investigate whether the development of sub-pulmonic systolic anterior motion(SAM)may be inherent to the anatomy of the the mitral valve(MV)or affected by external factors,such as a dilated ri... Introduction:We sought to investigate whether the development of sub-pulmonic systolic anterior motion(SAM)may be inherent to the anatomy of the the mitral valve(MV)or affected by external factors,such as a dilated right ventricle or chest abnormalities in d-looped transposition of the great arteries post atrial switch operation(d-TGA/AtS).Methods:Analysis was performed of clinical and cardiac imaging studies acquired on 19 adult patients with d-TGA/AtS(age 42±6 years old,56%male)between 2015–2019.Echocardiography data included mitral apparatus anatomy,and CT/MRI data included biventricular dimensions,function,and Haller index(HI)for pectus deformity.Results:Patients with leaflet SAM(n=6)compared to patients without SAM(n=13)had higher MV protrusion height(2.3±0.5 vs.1.5±0.4 cm,p≤0.01)and longer anterior MV leaflet length(3.1±0.4 cm vs.2.6±0.3 cm p≤0.05),when compared to those without.CT/MRI showed higher sub-pulmonic left ventricular ejection fraction(LVEF)in the SAM group(71%±8%vs.54%±7%,respectively).RV size and function,significant chest deformity(HI>3.5),presence of a ventricular lead pacemaker,and septal thickness did not play a role in development of SAM.Conclusions:An elongated mitral apparatus is associated with the development of SAM,and the development of left ventricular outflow tract obstruction(LVOTO),in d-TGA/AtS.LV hyperkinesia is associated with SAM.Systemic RV dimensions,septal thickness,and degree of chest deformity did not differ significantly between subjects with SAM and those without. 展开更多
关键词 d-loop transposition of the great arteries mustard operation senning operation systolic anterior motion of the mitral valve ECHOCARDIOGRAPHY cardiac MRI
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Ac/Ds Transposition Activity in Transgenic Rice Population and DNA Flanking Sequence of Ds Insertion Sites 被引量:6
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作者 朱正歌 付亚萍 +4 位作者 肖晗 胡国成 斯华敏 于永红 孙宗修 《Acta Botanica Sinica》 CSCD 2003年第1期102-107,共6页
The Agrobacterium mediated transgenic rice ( Oryza saliva L.) population with inserts of maize transposon Activator/Dissociation (Ac/Ds) was investigated. DNA sequences flanking the T-DNA were analyzed with inverse PC... The Agrobacterium mediated transgenic rice ( Oryza saliva L.) population with inserts of maize transposon Activator/Dissociation (Ac/Ds) was investigated. DNA sequences flanking the T-DNA were analyzed with inverse PCR. Results showed that 65.4% of the T-DNA was integrated in different locations of rice genome, and some T-DNA flanking sequences were located on certain chromosomes. A number of T-DNA was found to have inserted into protein coding regions. In order to induce transposition of the inserted Ds elements, 354 crosses of Ac x Ds and Ds x Ac were constructed. The excision frequency of Ds element trans-activated by Ac transposase was 22.7% in the F-2 populations, and the transposition was confirmed with analyses of DNA sequences flanking the Ds elements. In addition to the transposition due to 'cut-paste' mechanism, Ds can replicate itself and integrate into a new locus, and inaccurate excisions were also found. A proportion of DNA segments flanking the Ds elements showed no homologies to sequences published in GenBank, of which two were registered under the accession numbers AF355153 and AF355770. The strategy of using transposon tagging for rice genomics study was discussed. 展开更多
关键词 transposon Ac/Ds transposition activity flanking sequence Oryza sativa
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Reinnervation of spinal cord anterior horn cells after median nerve repair using transposition with other nerves 被引量:2
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作者 Yu-Song Yuan Su-Ping Niu +8 位作者 You-Lai Yu Pei-Xun Zhang Xiao-Feng Yin Na Han Ya-Jun Zhang Dian-Ying Zhang Hai-Lin Xu Yu-Hui Kou Bao-Guo Jiang 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第4期699-705,共7页
Our previous studies have confirmed that during nerve transposition repair to injured peripheral nerves, the regenerated nerve fibers of motor neurons in the anterior horn of the spinal cord can effectively repair dis... Our previous studies have confirmed that during nerve transposition repair to injured peripheral nerves, the regenerated nerve fibers of motor neurons in the anterior horn of the spinal cord can effectively repair distal nerve and target muscle tissue and restore muscle motor function. To observe the effect of nerve regeneration and motor function recovery after several types of nerve transposition for median nerve defect(2 mm), 30 Sprague-Dawley rats were randomly divided into sham operation group, epineurial neurorrhaphy group, musculocutaneous nerve transposition group, medial pectoral nerve transposition group, and radial nerve muscular branch transposition group. Three months after nerve repair, the wrist flexion test was used to evaluate the recovery of wrist flexion after regeneration of median nerve in the affected limbs of rats. The number of myelinated nerve fibers, the thickness of myelin sheath, the diameter of axons and the cross-sectional area of axons in the proximal and distal segments of the repaired nerves were measured by osmic acid staining. The ratio of newly produced distal myelinated nerve fibers to the number of proximal myelinated nerve fibers was calculated. Wet weights of the flexor digitorum superficialis muscles were measured. Muscle fiber morphology was detected using hematoxylin-eosin staining. The cross-sectional area of muscle fibers was calculated to assess the recovery of muscles. Results showed that wrist flexion function was restored, and the nerve grew into the distal effector in all three nerve transposition groups and the epineurial neurorrhaphy group. There were differences in the number of myelinated nerve fibers in each group. The magnification of proximal to distal nerves was 1.80, 3.00, 2.50, and 3.12 in epineurial neurorrhaphy group, musculocutaneous nerve transposition group, medial pectoral nerve transposition group, and radial nerve muscular branch transposition group, respectively. Nevertheless, axon diameters of new nerve fibers, cross-sectional areas of axons, thicknesses of myelin sheath, wet weights of flexor digitorum superficialis muscle and cross-sectional areas of muscle fibers of all three groups of donor nerves from different anterior horn motor neurons after nerve transposition were similar to those in the epineurial neurorrhaphy group. Our findings indicate that donor nerve translocation from different anterior horn motor neurons can effectively repair the target organs innervated by the median nerve. The corresponding spinal anterior horn motor neurons obtain functional reinnervation and achieve some degree of motor function in the affected limbs. 展开更多
关键词 NERVE REGENERATION transposition repair MEDIAN NERVE functional remodeling muscle atrophy surgical intervention peripheral NERVE injury neural REGENERATION
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Transposition of Branches of Radial Nerve Innervating Supinator to Posterior Interosseous Nerve for Functional Reconstruction of Finger and Thumb Extension in 4 Patients with Middle and Lower Trunk Root Avulsion Injuries of Brachial Plexus 被引量:4
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作者 吴霞 丛小兵 +6 位作者 黄启顺 艾方兴 刘玉田 鲁晓乘 李进 翁雨雄 陈振兵 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2017年第6期933-937,共5页
This study aimed to investigate the reconstruction of the thumb and finger extension function in patients with middle and lower trunk root avulsion injuries of the brachial plexus. From April 2010 to January 2015, we ... This study aimed to investigate the reconstruction of the thumb and finger extension function in patients with middle and lower trunk root avulsion injuries of the brachial plexus. From April 2010 to January 2015, we enrolled in this study 4 patients diagnosed with middle and lower trunk root avulsion injuries of the brachial plexus via imaging tests, electrophysiological examinations, and clinical confirmation. Muscular branches of the radial nerve, which innervate the supinator in the forearm, were transposed to the posterior interosseous nerve to reconstruct the thumb and finger extension function. Electrophysiological findings and muscle strength of the extensor pollicis longus and extensor digitorum communis, as well as the distance between the thumb tip and index finger tip, were monitored. All patients were followed up for 24 to 30 months, with an average of 27.5 months. Motor unit potentials(MUP) of the extensor digitorum communis appeared at an average of 3.8 months, while MUP of the extensor pollicis longus appeared at an average of 7 months. Compound muscle action potential(CMAP) appeared at an average of 9 months in the extensor digitorum communis, and 12 months in the extensor pollicis longus. Furthermore, the muscle strength of the extensor pollicis longus and extensor digitorum communis both reached grade Ⅲ at 21 months. Lastly, the average distance between the thumb tip and index finger tip was 8.8 cm at 21 months. In conclusion, for patients with middle and lower trunk injuries of the brachial plexus, transposition of the muscular branches of the radial nerve innervating the supinator to the posterior interosseous nerve for the reconstruction of thumb and finger extension function is practicable and feasible. 展开更多
关键词 brachial plexus peripheral nerve supinator trauma nerve transposition
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Repair of peripheral nerve defects by nerve transposition using small gap bio-sleeve suture with different inner diameters at both ends 被引量:1
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作者 Yu-Hui Kou You-Lai Yu +7 位作者 Ya-Jun Zhang Na Han Xiao-Feng Yin Yu-Song Yuan Fei Yu Dian-Ying Zhang Pei-Xun Zhang Bao-Guo Jiang 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第4期706-712,共7页
During peripheral nerve transposition repair, if the diameter difference between transposed nerves is large or multiple distal nerves must be repaired at the same time, traditional epineurial neurorrhaphy has the prob... During peripheral nerve transposition repair, if the diameter difference between transposed nerves is large or multiple distal nerves must be repaired at the same time, traditional epineurial neurorrhaphy has the problem of high tension at the suture site, which may even lead to the failure of nerve suture. We investigated whether a small gap bio-sleeve suture with different inner diameters at both ends can be used to repair a 2-mm tibial nerve defect by proximal transposition of the common peroneal nerve in rats and compared the results with the repair seen after epineurial neurorrhaphy. Three months after surgery, neurological function, nerve regeneration, and recovery of nerve innervation muscle were assessed using the tibial nerve function index, neuroelectrophysiological testing, muscle biomechanics and wet weight measurement, osmic acid staining, and hematoxylin-eosin staining. There was no obvious inflammatory reaction and neuroma formation in the tibial nerve after repair by the small gap bio-sleeve suture with different inner diameters at both ends. The conduction velocity, muscle strength, wet muscle weight, cross-sectional area of muscle fibers, and the number of new myelinated nerve fibers in the biosleeve suture group were similar to those in the epineurial neurorrhaphy group. Our findings indicate that small gap bio-sleeve suture with different inner diameters at both ends can achieve surgical suture between nerves of different diameters and promote regeneration and functional recovery of injured peripheral nerves. 展开更多
关键词 NERVE REGENERATION bio-sleeve small GAP SLEEVE SUTURE NERVE transposition NERVE defect NERVE conduit NERVE reinnervation peripheral NERVE neural REGENERATION
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Brain functional remodeling caused by sciatic nerve transposition repair in rats identified by multiplemodel resting-state blood oxygenation level-dependent functional magnetic resonance imaging analysis 被引量:2
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作者 Yu-Song Yuan Hai-Lin Xu +3 位作者 Zhong-Di Liu Yu-Hui Kou Bo Jin Pei-Xun Zhang 《Neural Regeneration Research》 SCIE CAS CSCD 2022年第2期418-426,共9页
Lower extremity nerve transposition repair has become an important treatment strategy for peripheral nerve injury;however, brain changes caused by this surgical procedure remain unclear. In this study, the distal stum... Lower extremity nerve transposition repair has become an important treatment strategy for peripheral nerve injury;however, brain changes caused by this surgical procedure remain unclear. In this study, the distal stump of the right sciatic nerve in a rat model of sciatic nerve injury was connected to the proximal end of the left sciatic nerve using a chitin conduit. Neuroelectrophysiological test showed that the right lower limb displayed nerve conduction, and the structure of myelinated nerve fibers recovered greatly. Muscle wet weight of the anterior tibialis and gastrocnemius recovered as well. Multiple-model resting-state blood oxygenation level-dependent functional magnetic resonance imaging analysis revealed functional remodeling in multiple brain regions and the re-establishment of motor and sensory functions through a new reflex arc. These findings suggest that sciatic nerve transposition repair induces brain functional remodeling. The study was approved by the Ethics Committee of Peking University People's Hospital on December 9, 2015(approval No. 2015-50). 展开更多
关键词 brain connectivity brain network fALFF MRI nerve transposition repair peripheral nerve injury ReHo REMODELING
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Salvage of vascular graft infections via vacuum sealing drainage and rectus femoris muscle flap transposition: A case report 被引量:3
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作者 Peng Zhang Fu-Lin Tao +2 位作者 Qing-Hu Li Dong-Sheng Zhou Fan-Xiao Liu 《World Journal of Clinical Cases》 SCIE 2021年第10期2296-2301,共6页
BACKGROUND The management of vascular graft infections continues to be a significant challenge in a clinical situation.The aim of this report is to illustrate the novel vacuum sealing drainage(VSD)technique and rectus... BACKGROUND The management of vascular graft infections continues to be a significant challenge in a clinical situation.The aim of this report is to illustrate the novel vacuum sealing drainage(VSD)technique and rectus femoris muscle flap transposition for vascular graft infections,and to evaluate the prospective of future testing of this surgical procedure.CASE SUMMARY We report the case of a 32-year-old male patient,who presented a severe infected groin wound with biological vascular graft Acinetobacter baumannii infection resulting in extensive graft exposure.Using the VSD and muscle flap transposition,the groin wound and vascular graft infection were finally treated successfully.CONCLUSION Our case report highlights that VSD technique and rectus femoris muscle flap transposition could be considered in patients presenting with a severe infected groin wound with biological vascular graft Acinetobacter baumannii infection resulting in extensive graft exposure,especially in consideration of treatable conditions. 展开更多
关键词 Vascular graft INFECTION Muscle flap transposition Rectus femoris muscle flap Vacuum sealing drainage Case report TRAUMA
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Analysis of the Superconducting Cable Transposition in Low Resistance CICC Joint 被引量:1
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作者 朱有华 《Plasma Science and Technology》 SCIE EI CAS CSCD 2000年第4期397-404,共8页
In an integrated structure low resistance CICC joint, current is conducted by outer cable strands coming into touch with the conductive Cu sole. So it is an important condition for satisfying joint performance that ea... In an integrated structure low resistance CICC joint, current is conducted by outer cable strands coming into touch with the conductive Cu sole. So it is an important condition for satisfying joint performance that each strand of the cable inside the joint is able to come to the outermost by transposition. This paper presents analysis, calculation and figures for the strand transposition. According to the twist procedures of the superconducting cable, the author computed the actual pitch of each stage cable, consecutively computed the projection of each stage cable on the axis of the cable (z axis) and the corresponding twist angle as the z coordinate changes, which is then drawn by AutoCAD. From the results shown in the figures, the minimal cable length, which enables each strand to transpose almost equally to the outermost of the cable in such a length, call be determined as the optimal joint length. 展开更多
关键词 Analysis of the Superconducting Cable transposition in Low Resistance CICC Joint CICC LENGTH
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Transposition of the great arteries-a phenotype associated with 16p11.2 duplications?
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作者 Zarmiga Karunanithi Else Marie Vestergaard Mette H Lauridsen 《World Journal of Cardiology》 CAS 2017年第12期848-852,共5页
Genetic analyses of patients with transposition of the great arteries have identified rare copy number variations,suggesting that they may be significant to the aetiology of the disease.This paper reports the identifi... Genetic analyses of patients with transposition of the great arteries have identified rare copy number variations,suggesting that they may be significant to the aetiology of the disease.This paper reports the identification of a 16 p11.2 microduplication,a variation that has yet to be reported in association with transposition of the great arteries.The 16 p11.2 microduplication is associated with autism spectrum disorder and developmental delay,but with highly variable phenotypic effects.Autism and attention deficit disorders are observed more frequently in children with congenital heart disease than in the general population.Neonatal surgery is proposed as a risk factor,but as yet unidentified genetic abnormalities should also be taken into account.Thus,congenital heart abnormalities may constitute a part of the phenotypic spectrum associated with duplications at 16 p11.2.We suggest chromosomal microarray be considered part of the diagnostic work-up in patients with transposition of the great arteries. 展开更多
关键词 transposition of the great ARTERIES COPY number variation Genetics 16p11.2 MICRODUPLICATION
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EVALUATION OF THE SURGICAL PROCEDURE OF CORRECTED TRANSPOSITION OF THE GREAT ARTERIES
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作者 徐志伟 苏肇伉 丁文祥 《Medical Bulletin of Shanghai Jiaotong University》 CAS 1999年第2期113-115,133,共4页
ObjectiFe To evaiuate surgicai procedure of corrected transposition of the great arteries(CTGA). Methods Twenty one patients with CTGA were ropaired from September 1990 to December 1996 Eighteen pattents were correcte... ObjectiFe To evaiuate surgicai procedure of corrected transposition of the great arteries(CTGA). Methods Twenty one patients with CTGA were ropaired from September 1990 to December 1996 Eighteen pattents were corrected by biventricular repair. The ventricular septal delect (VSD) was repaired through the right atrium or anatomic left ventricle in 11 patients and through the anatomic right ventricle in 7 patients. There were atrioventricular valvular regurgitation or one side ventricular hypoplasia in 3 patients. Two patients had Fontan operation and one had bidirectional shunt. Results Five patients (45%, 5/11) had complete atrioventricular block (CAVB) in these cases with VSD repaired through the right atrium or left ventricle, and 3 patients died (27%, 3/11). One patient (14%,1/7) had CA VB which the VSD was repaired through the anatomic right ventricle with only one death. Conclusion CAVB could be prevented by VSD rePair through the anatomic right ventricle. CTGA with pulmonary hypertension must be repaired early to prevent pulmonary vascular disease. Fontan or bidirectional shunt were suggested for complex CTGA with valvular regurgitation or ventricular unbalance. 展开更多
关键词 transposition of the GREAT ARTERIES atrioventricular block FONTAN operation BIDIRECTIONAL SHUNT
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Anterior subcutaneous transposition of the ulnar nerve improves neurological function in patients with cubital tunnel syndrome 被引量:5
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作者 Wei Huang Pei-xun Zhang +3 位作者 Zhang Peng Feng Xue Tian-bing Wang Bao-guo Jiang 《Neural Regeneration Research》 SCIE CAS CSCD 2015年第10期1690-1695,共6页
Although several surgical procedures exist for treating cubital tunnel syndrome, the best surgical option remains controversial. To evaluate the efficacy of anterior subcutaneous transposition of the ulnar nerve in pa... Although several surgical procedures exist for treating cubital tunnel syndrome, the best surgical option remains controversial. To evaluate the efficacy of anterior subcutaneous transposition of the ulnar nerve in patients with moderate to severe cubital tunnel syndrome and to analyze prognostic factors, we retrospectively reviewed 62 patients(65 elbows) diagnosed with cubital tunnel syndrome who underwent anterior subcutaneous transposition. Preoperatively, the initial severity of the disease was evaluated using the Mc Gowan scale as modified by Goldberg: 18 patients(28%) had grade IIA neuropathy, 20(31%) had grade IIB, and 27(42%) had grade III. Postoperatively, according to the Wilson & Krout criteria, treatment outcomes were excellent in 38 patients(58%), good in 16(25%), fair in 7(11%), and poor in 4(6%), with an excellent and good rate of 83%. A negative correlation was found between the preoperative Mc Gowan grade and the postoperative Wilson & Krout score. The patients having fair and poor treatment outcomes had more advanced age, lower nerve conduction velocity, and lower action potential amplitude compared with those having excellent and good treatment outcomes. These results suggest that anterior subcutaneous transposition of the ulnar nerve is effective and safe for the treatment of moderate to severe cubital tunnel syndrome, and initial severity, advancing age, and electrophysiological parameters can affect treatment outcome. 展开更多
关键词 nerve regeneration peripheral nerve injury ulnar nerve compression syndrome age motor nerve conduction velocity electrophysiology sensory nerve conduction velocity modified Mc Gowan scale Wilson Krout criteria anterior transposition ulnar nerve NSFC grant neural regeneration
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Repair of long segmental ulnar nerve defects in rats by several different kinds of nerve transposition
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作者 Fei Yu You-Lai Yu +7 位作者 Su-Ping Niu Pei-Xun Zhang Xiao-Feng Yin Na Han Ya-Jun Zhang Dian-Ying Zhang Yu-Hui Kou Bao-Guo Jiang 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第4期692-698,共7页
Multiple regeneration of axonal buds has been shown to exist during the repair of peripheral nerve injury, which confirms a certain repair potential of the injured peripheral nerve. Therefore, a systematic nerve trans... Multiple regeneration of axonal buds has been shown to exist during the repair of peripheral nerve injury, which confirms a certain repair potential of the injured peripheral nerve. Therefore, a systematic nerve transposition repair technique has been proposed to treat severe peripheral nerve injury. During nerve transposition repair, the regenerated nerve fibers of motor neurons in the anterior horn of the spinal cord can effectively grow into the repaired distal nerve and target muscle tissues, which is conducive to the recovery of motor function. The aim of this study was to explore regeneration and nerve functional recovery after repairing a long-segment peripheral nerve defect by transposition of different donor nerves. A long-segment(2 mm) ulnar nerve defect in Sprague-Dawley rats was repaired by transposition of the musculocutaneous nerve, medial pectoral nerve, muscular branches of the radial nerve and anterior interosseous nerve(pronator quadratus muscle branch). In situ repair of the ulnar nerve was considered as a control. Three months later, wrist flexion function, nerve regeneration and innervation muscle recovery in rats were assessed using neuroelectrophysiological testing, osmic acid staining and hematoxylin-eosin staining, respectively. Our findings indicate that repair of a long-segment ulnar nerve defect with different donor nerve transpositions can reinnervate axonal function of motor neurons in the anterior horn of spinal cord and restore the function of affected limbs to a certain extent. 展开更多
关键词 NERVE REGENERATION NERVE transposition REPAIR conical SLEEVE small gap SLEEVE bridging ULNAR NERVE target organ muscle NERVE reinnervation neural REGENERATION
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Adaptive Pitch Transposition: Smart Auditory Spectral Shifts in Cochlear Implants
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作者 Kevin Struwe Ralf Salomon 《Engineering(科研)》 2017年第9期739-754,共16页
Patients with severe hearing loss have the option to get a cochlear implant device to regain their hearing. Yet, the implantation process is not always optimal, which in some cases results in a shallow insertion depth... Patients with severe hearing loss have the option to get a cochlear implant device to regain their hearing. Yet, the implantation process is not always optimal, which in some cases results in a shallow insertion depth or an accidental insertion into the wrong cochlear duct. As a consequence, the patients' pitch discrimination ability is suboptimal, leading to an even more decreased vowel identification, which is vital for speech recognition. This paper presents a technical approach to solve this problem: the adaptive pitch transposition module modifies the frequency content in a fashion so that the pitch is fixed to an optimal value. To determine this value, a patient-individual best pitch is determined experimentally by evaluating speech recognition at different pitches. This best pitch is subsequently called the comfort pitch. As a result of the considerations a technical implementation is presented in principle. A system comprised of pitch detection, pitch transposition and an arbitrary chosen comfort pitch is described in depth. It has been implemented prototypically in Matlab/Octave and tested with an example audio file. The system?itself is designed as a preprocessing stage preceding cochlear implant processing. 展开更多
关键词 COCHLEAR IMPLANTS PITCH transposition SPEECH Processing
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Corrected Transposition of the Great Arteries with Ebstein’s Anomaly, Dysplasia of the Mitral Leaflets and Persistence of Left Superior Vena Cava in an Adult
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作者 Aureo Campos-Tello Giancarlo A. Valle +5 位作者 Luis M. Milla Angel D. Cueva Sara Ramirez-Flores Oscar García-Rosadio Pablo A. Mendoza Nilda Espinola-Zavaleta 《World Journal of Cardiovascular Diseases》 2020年第2期50-56,共7页
Introduction: Congenitally corrected transposition of the great arteries (cc-TGA) is a congenital heart disease rarely described among adult population, especially if it is associated with other abnormalities such as ... Introduction: Congenitally corrected transposition of the great arteries (cc-TGA) is a congenital heart disease rarely described among adult population, especially if it is associated with other abnormalities such as Ebstein’s anomaly and abnormal origin of coronary arteries. Case presentation: Twenty-two-year-old woman admitted to intensive care unit with acute decompensated heart failure. The transthoracic echocardiography demonstrated atrioventricular and ventriculoarterial discordance. The left-sided atrioventricular valve, in this case, the tricuspid valve, showed apical displacement of the septal valve suggesting Ebstein’s anomaly. The computed tomography corroborated these findings and additionally showed a left superior vena cava and an abnormal origin of the coronary arteries. The patient is in NYHA functional class II, receiving treatment with diuretic, digitalis, beta-blockers and angiotensin-converting enzyme (ACE) inhibitor. Conclusion: This is a very interesting case of an adult in the third decade of life with cc-TGA associated with abnormalities not described in the literature that had reached adulthood. Noninvasive images play an important role in its diagnosis. 展开更多
关键词 Corrected transposition ECHOCARDIOGRAPHY Ebstein’s ANOMALY Computed Tomography
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