Objective To analyze the main causes and risk factors of unplanned reoperation after liver transplantation. Methods The clinical data of 242 liver transplant recipients in the First Affiliated Hospital of Anhui Medical University from January 2015 to December 2024 were retrospectively analyzed. According to whether unplanned reoperation was performed during the same hospitalization after surgery, the recipients were divided into the reoperation group (n=36) and the non-reoperation group (n=206). The preoperative, intraoperative and postoperative data of the two groups, as well as donor and graft-related data, were compared to analyze the risk factors of unplanned reoperation after liver transplantation and the survival status of the two groups. Results Among the 242 liver transplant recipients, 36 underwent unplanned reoperations, with a total of 54 procedures including various laparotomies, endoscopic and interventional surgeries, among which there were 20 laparotomies, 18 endoscopic surgeries and 16 interventional surgeries. The most common cause of unplanned reoperation was biliary complications (20 times), followed by vascular complications (17 times). Compared with the non-reoperation group, the reoperation group had longer graft cold ischemia time, higher postoperative fatality rate of recipients, longer length of stay in the intensive care unit and postoperative hospital stay, and higher total hospitalization costs (all P<0.05). The incidence of unplanned reoperation was higher in recipients who underwent split liver transplantation (P<0.05). Multivariate analysis showed that intraoperative blood loss ≥1 000 mL, positive culture of graft perfusate and split liver transplantation were independent risk factors for unplanned reoperation (all P<0.05). The postoperative 7-day, 1-month, 3-month and 6-month survival rates of recipients in the reoperation group and the non-reoperation group were 100% vs. 98.1%, 88.9% vs. 94.2%, 69.4% vs. 90.8% and 66.7% vs. 90.8%, respectively, and the postoperative survival rate of recipients in the reoperation group was lower than that in the non-reoperation group (P<0.05). Conclusions The main causes of unplanned reoperation after liver transplantation are biliary complications, vascular complications, abdominal incision infection and intra-abdominal hemorrhage. Intraoperative massive blood loss, positive culture of graft perfusate and split liver transplantation are the risk factors associated with unplanned reoperation after liver transplantation.

Objective To explore the value of CT signs and quantitative parameters of artificial intelligence (AI) in predicting the efficacy of neoadjuvant chemotherapy for colorectal cancer. Methods A total of 349 colorectal cancer patients who received neoadjuvant chemotherapy at Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine in Hebei Province from January 2022 to January 2025 were selected and and divided into the effective group (n = 267) and the ineffective group (n = 82) according to the evaluation criteria for the efficacy of solid tumors. Conduct a CT examination and extract AI quantitative parameters from the CT images based on the lesion. The data were analyzed using SPSS21.0 software, Logistic regression was used to screen the influencing factors of ineffective neoadjuvant chemotherapy in patients with colorectal cancer, and separate and combined models of CT signs and AI quantitative parameters were established. The predictive effect of the model was verified by using the ROC curve, calibration curve and decision curve. Results Compared with the effective group, the proportion of regular tumor morphology and the proportion of non-enlarged lymph nodesin the ineffective group were smaller. The tumor volume, peak value and entropy value were larger (P < 0.05). Multivariable analysis showed that irregular shape (OR= 4.216), presence of lymph node enlargement (OR = 8.998), larger tumor volume (OR = 1.109), higher average CT value (OR = 1.120), elevated peak value (OR = 2.528), and increased entropy value (OR = 1.390) were independent risk factors for ineffective neoadjuvant chemotherapy in colorectal cancer (P < 0.05). The areas under the ROC curves of the individual and combined models of CT signs and AI quantitative parameters were 0.777, 0.818, and 0.877, respectively(P < 0.05). The calibration curve showed a Brier score of 0.091. The decision curve showed that the threshold was between 0.10 and 0.85, and the combined model achieved a relatively high net clinical benefit. Conclusion CT signs combined with AI quantitative parameters has a predictive value for the efficacy of neoadjuvant chemotherapy in colorectal cancer. To provide evidence-based basis for clinical screening of the population benefiting from chemotherapy and optimization of treatment strategies.

Real-time acquisition of pulmonary ventilation and perfusion information through thoracic electrical impedance tomography (EIT) holds significant clinical value. This study proposes a novel method based on the rime (RIME) algorithm-optimized variational mode decomposition (VMD) to separate lung ventilation and perfusion signals directly from raw voltage data prior to EIT image reconstruction, enabling independent imaging of both parameters. To validate this approach, EIT data were collected from 16 healthy volunteers under normal breathing and inspiratory breath-holding conditions. The RIME algorithm was employed to optimize VMD parameters by minimizing envelope entropy as the fitness function. The optimized VMD was then applied to separate raw data across all measurement channels in EIT, with spectral analysis identifying relevant components to reconstruct ventilation and perfusion signals. Results demonstrated that the structural similarity index (SSIM) between perfusion images derived from normal breathing and breath-holding states averaged approximately 84% across all 16 subjects, significantly outperforming traditional frequency-domain filtering methods in perfusion imaging accuracy. This method offers a promising technical advancement for real-time monitoring of pulmonary ventilation and perfusion, holding significant value for advancing the clinical application of EIT in the diagnosis and treatment of respiratory diseases.
Humans ; Electric Impedance ; Algorithms ; Tomography/methods* ; Pulmonary Ventilation/physiology* ; Lung/diagnostic imaging* ; Image Processing, Computer-Assisted/methods* ; Adult

Objective To evaluate the effects of bladder neck preservation on postoperative stress urinary inconti-nence and retrograde ejaculation in patients undergoing transurethral thulium laser enucleation of the prostate(ThuLEP).Methods The clinical data of 203 patients who underwent ThuLEP in our hospital from September 2021 to December 2023 were retrospectively analyzed.According to the operation method,the patients were divided into bladder neck preservation group(n=95)and non-bladder neck preservation group(n=108).The occurrence of postoperative stress urinary inconti-nence and retrograde ejaculation of the two groups were compared.Results The differences between the patients of two groups in operative time(110[80,130]min vs 110[90,140]min),hospital stay(8[8,8]d vs 8[8,8]d),in-dwelling catheter time(7[7,7]h vs 7[7,7]h),and hemoglobin decline(9[6,14]g/L vs 8[4,13]g/L)were not statistically significant(P＞0.05).There were no statistically significant differences between the two groups at 3 months postoperatively in maximum flow rate(20[18,21]mL/s vs 19[18,20]mL/s),scores of International Prostate Symp-tom Scale(5[4,6]vs 5[4,5]),post-void residual urine volume(0[0,8]mL vs 0[0,7.5]mL)and quality of life(2[1,3]vs 2[1,3])(P＞0.05).The differences in the rates of postoperative stress urinary incontinence(2.1％vs 9.3％)and retrograde ejaculation(49.4％vs 74.5％)between the two groups were statistically significant(P＜0.05).Conclusion Bladder neck preservation during ThuLEP reduces the incidence of postoperative stress urinary incontinence and retrograde ejaculation.

Objective:To explore the application of 3D printing technique in the surgical treatment of complex scapular fractures.Methods:A retrospective study was conducted to analyze the clinical data of 22 patients with scapular fracture who had been admitted to Department of Trauma Surgery, The People's Hospital of Binzhou from June 2019 to August 2023. There were 15 males and 7 females, with a mean age of 44.3 (20.5, 69.0) years. The patients were divided into 2 groups according to whether 3D printing technique was used preoperatively. In the 3D printing group of 11 cases, surgery was designed and performed according to the preoperative plan using 3D-printed models, while in the conventional group of 11 cases, conventional open reduction and internal fixation was performed. The surgical time, intraoperative blood loss, times of intraoperative C-arm X-ray fluoroscopy, postoperative 24-hour visual analog scale (VAS), hospital stay, time to start weight bearing, postoperative 12-week Hardegger shoulder function score, and incidence of postoperative complications were compared between the 2 groups.Results:Comparisons of preoperative general data between the 2 groups showed no statistically significant differences, indicating comparability ( P > 0.05). All patients were followed up for (12.5±4.5) months postoperatively. The 3D printing group had shorter surgical time, less intraoperative blood loss, fewer times of intraoperative fluoroscopy, lower postoperative 24-hour VAS, shorter hospital stay, and earlier time to start weight bearing [(118.3±16.5) min, (182.8±37.0) mL, (3.1±0.7) times, (4.1±1.1) points, (12.9±2.9) days, and (7.5±1.4) weeks] than the conventional group [(185.5±46.4) min, (337.3±49.1) mL, (6.4±1.4) times, (6.3±1.0) points, (19.9±4.5) days, and (11.4±2.8) weeks], with all differences being statistically significant ( P < 0.05). At 12 weeks postoperatively, the number of patients with good Hardegger shoulder function score in the 3D printing group was significantly higher than that in the conventional group ( P < 0.05). No postoperative complications occurred in either group. Conclusion:In the surgery for complex scapular fractures, application of 3D printing technique for preoperative planning can reduce surgical trauma, lower the difficulty and risk of surgery, and accelerate functional recovery of the shoulder joint.

Purpose To investigate the relationship between FN1 expression and clinical and pathologic features of laryngeal squamous cell carcinoma(LSCC)and the expression of tumor-associated macrophages(TAMs).Methods LSCC datasets GSE33232 and GSE84957 were analyzed and screened the differentially expressed gene FN1,and draw the receiver operating characteristic(ROC)curve.Bioinformatics analysis of FN1 expression,and prognosis in LSCC was performed.To investigate the effect of down-regulating FN1 expression in TU177 cells on the malignant bio-logical behavior of LSCC,we performed a scratch wound healing assay and a Transwell chamber assay to assess the effect of FN1 on cell proliferation,migration,and invasion in vitro.Immunohistochemical(IHC)staining was per-formed to detect the expression of FN1 and CD 163 in LSCC tissues.Results Analysis of the GSE33232 and GSE84957 datasets and online databases showed that FN1 was significantly overexpressed in LSCC tissues(P＜0.05),and patients with high FN1 expression had a significantly lower recurrence-free survival rate(HR=1.6,P=0.017).After transfection with si-FN1,the expression of FN1 in TU177 cells was significantly reduced(0.34±0.02 vs 1.00±0.03,P＜0.01).Compared with the control group,the down-regulation of FN1 expression inhibited the in vitro migra-tion(56.1±3.1 vs 19.23±1.0)and invasion(480±23 vs 288±20)ability of TU177 cells(both P＜0.01).Im-munohistochemistry findings showed that FN1 was highly expressed in both the tumor parenchyma(nest)and stromal cells of LSCC tissue,with a statistically significant difference[52.1％(24/46)vs 71.7％(33/46),P＜0.001].It was found that high expression of N-FN1 was associated with patients' pathological grade and lymph node metastasis(P＜0.05),while high expression of S-FN1 was associated with patients' age,lymph node metastasis,and TNM stage(P＜0.05).In addition,the co-expression of FN1 and CD163 was correlated with patients' pathological grad-ing,lymph node metastasis,and TNM stage(all P＜0.05).Conclusion FN1 and CD163 exhibit high expression levels in LSCC patients,which are closely associated with malignant progression,including invasion and metastasis.Notably,during LSCC progression,there may be a potential synergistic interaction between FN1 and CD 163-positive macrophages in the tumor microenvironment.

ObjectiveTo observe the effects of the Fuyuan Tongluo prescription （composed of Astragali Radix， Carthami Flos， Spatholobi Caulis， Liquidambaris Fructus， Lycopodii Herba， Centellae Herba， etc.） in the treatment of restenosis with collateral obstruction syndrome after interventional operation of lower limb arteriosclerosis obliterans， and its impact on the primary patency rate. MethodsA total of 88 patients with collateral obstruction syndrome after interventional surgery for lower limb arteriosclerosis obliterans were randomly divided into two groups. The control group （n₁=44） received dual antiplatelet therapy with aspirin and clopidogrel. The observation group （n₂=44） was treated with Fuyuan Tongluo prescription non-decocted granules in addition to aspirin and clopidogrel. Both groups received treatment for 24 weeks and were followed up for 36 weeks. The changes in primary patency rate， symptom scores， ankle-brachial index （ABI）， coagulation function， and inflammatory markers before and after treatment were compared between the two groups. ResultsFor primary patency rate， after 36 weeks of treatment， the observation group had a significantly better primary patency rate than the control group （χ²=4.14，P<0.05）. After 24 weeks of treatment， there was no significant difference in primary patency rate between the two groups. Clinical efficacy comparison： Based on symptom quantification scores， and using the Nimodipine method as a reference， the overall efficacy of the observation group was superior to that of the control group after 24 weeks of treatment （χ²=2.24，P<0.05）. ABI levels： The observation group had a higher ABI than the control group after 24 and 36 weeks of treatment （P<0.05）. Coagulation function indicators： After 24 and 36 weeks of treatment， D-dimer and fibrinogen levels in both groups were lower than before treatment （P<0.05）. Inflammatory markers： After 24 and 36 weeks of treatment， CRP levels in the observation group were lower than those in the control group （P<0.05）. There were no significant differences in white blood cell （WBC） and erythrocyte sedimentation rate （ESR） levels before and after treatment between the two groups. ConclusionAdding Fuyuan Tongluo prescription non-decocted granules to dual antiplatelet therapy can improve the primary patency rate of the affected vessels in patients with lower limb arteriosclerosis obliterans after interventional surgery. Longer use of Fuyuan Tongluo prescription can significantly improve clinical symptoms， demonstrating clinical application value.

ObjectiveTo observe the effects of the Fuyuan Tongluo prescription （composed of Astragali Radix， Carthami Flos， Spatholobi Caulis， Liquidambaris Fructus， Lycopodii Herba， Centellae Herba， etc.） in the treatment of restenosis with collateral obstruction syndrome after interventional operation of lower limb arteriosclerosis obliterans， and its impact on the primary patency rate. MethodsA total of 88 patients with collateral obstruction syndrome after interventional surgery for lower limb arteriosclerosis obliterans were randomly divided into two groups. The control group （n₁=44） received dual antiplatelet therapy with aspirin and clopidogrel. The observation group （n₂=44） was treated with Fuyuan Tongluo prescription non-decocted granules in addition to aspirin and clopidogrel. Both groups received treatment for 24 weeks and were followed up for 36 weeks. The changes in primary patency rate， symptom scores， ankle-brachial index （ABI）， coagulation function， and inflammatory markers before and after treatment were compared between the two groups. ResultsFor primary patency rate， after 36 weeks of treatment， the observation group had a significantly better primary patency rate than the control group （χ²=4.14，P<0.05）. After 24 weeks of treatment， there was no significant difference in primary patency rate between the two groups. Clinical efficacy comparison： Based on symptom quantification scores， and using the Nimodipine method as a reference， the overall efficacy of the observation group was superior to that of the control group after 24 weeks of treatment （χ²=2.24，P<0.05）. ABI levels： The observation group had a higher ABI than the control group after 24 and 36 weeks of treatment （P<0.05）. Coagulation function indicators： After 24 and 36 weeks of treatment， D-dimer and fibrinogen levels in both groups were lower than before treatment （P<0.05）. Inflammatory markers： After 24 and 36 weeks of treatment， CRP levels in the observation group were lower than those in the control group （P<0.05）. There were no significant differences in white blood cell （WBC） and erythrocyte sedimentation rate （ESR） levels before and after treatment between the two groups. ConclusionAdding Fuyuan Tongluo prescription non-decocted granules to dual antiplatelet therapy can improve the primary patency rate of the affected vessels in patients with lower limb arteriosclerosis obliterans after interventional surgery. Longer use of Fuyuan Tongluo prescription can significantly improve clinical symptoms， demonstrating clinical application value.

Objective To develop an innovative minimally invasive rotary-cutting surgical system for axillary osmidrosis,and conduct clinical validation.Methods The design concept,technical principles and system composition of the innovative minimally invasive rotary-cutting surgical system for axillary osmidrosis were introduced.A total of 73 patients(146 axillae)with axillary osmidrosis were enrolled as subjects,and underwent surgery using the newly developed surgical system.Clinical validation of the system was performed by evaluating postoperative scarring,odor elimination rate,postoperative complication incidence,and patient satisfaction.Results The study demonstrated favorable clinical outcomes in the following aspects:postoperative scarring,odor elimination rate,postoperative complication incidence,and patient satisfaction.Conclusion The minimally invasive rotary-cutting surgical system for axillary osmidrosis is rationally designed.The rotary-cutting puncture device is safe,effective,minimally invasive,and convenient for axillary osmidrosis surgery,warranting further clinical validation and widespread application.

Objective:To investigate the neuroprotective effect of nicotinamide riboside(NR)on experimental autoimmune en-cephalomyelitis(EAE)mice.Methods:C57BL/6 female mice were induced by myelin oligodendrocyte glycoprotein(MOG35-55)to pro-duce EAE model and were randomly divided into EAE group and NR group.From day 3 to day 27 after immunization,each mouse in EAE group was given normal saline(200 μl/d)and each mouse in NR group was given NR(500 mg/kg,200 μl/d)by intragastric administration.Clinical score and body weight of mice in EAE group and NR group were recorded every day.On the 28th day after immunization,the spinal cord protein of mice in each group was extracted and the frozen sections of spinal cord of mice in each group were prepared.LFB staining was used to detect demyelination,immunofluorescence staining was used to detect the expression of MAP-2 and the number of positive cells of NeuN,BDNF,GDNF,NGF and NT-3,and Western blot was used to detect the expressions of BDNF,GDNF,NGF and NT-3 of spinal cord.Results:Compared with EAE group,NR significantly delayed the onset time of EAE mice(P<0.05),decreased clinical score(P<0.05),reduced weight loss,alleviated spinal cord demyelination(P<0.05),increased the expression of MAP-2(P<0.01)and the number of NeuN positive cells(P<0.01),and up-regulated the expressions of BDNF,GDNF,NGF and NT-3(P<0.05).Conclusion:NR shows a good neuroprotective effect on EAE mice.The mechanism may be related to NR significantly increasing the expression of spinal neurotrophic factors,improving the microenvironment of the central nervous sys-tem,nourishing nerves,promoting nerve repair and nerve growth,etc.