Objective: To investigate the causal relationship between neutrophil extracellular traps (NETs) and head and neck squamous cell carcinoma (HNSCC) using Mendelian randomization (MR) methods, and to explore the clinical significance of NETs in the occurrence and development of HNSCC. Methods: Data related to NET biomarker myeloperoxidase-DNA complex (MPO-DNA) complex and HNSCC were obtained from the pooled statistical data of the Genome-Wide Association Study database (GWAS). This study was reviewed and approved by the Medical Ethics Committee, and informed consent was obtained from patients. Patients with HNSCC admitted to Department of Oral Maxillofacial, the First Affiliated Hospital of Harbin Medical University were included as the research group, and volunteers matched for age and gender were randomly selected from the Clinical Examination Center as the control group. The levels of MPO-DNA and citrullinated histone H3 (CitH3), two markers of NETs, as well as the levels of soluble adhesion factor CD44 variant 6 (CD44v6) and leukocyte differentiation antigen CD109, markers of lymph node metastasis, were measured in all subjects. Blood coagulation indicators, including plasma prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin time (TT), D-dimer (DD), and fibrinogen levels (FIB), were recorded to analyze the relationship and potential mechanisms between NETs and HNSCC. Results: MR results indicated a possible causal relationship between NETs and HNSCC. The inverse variance weighted P values for the four datasets were P1 = 0.037, P2 = 0.017, P3 = 0.004, and P4 = 0.023. Ultimately, 52 patients with head and neck squamous cell carcinoma and 20 healthy individuals were included. Compared with the control group, the expression levels of NETs markers MPO-DNA, CitH3, lymph node metastasis markers CD44v6 and CD109, and coagulation indicators FIB and DD were significantly elevated in the group with head and neck squamous cell carcinoma, with statistically significant differences (all P<0.001). In correlation studies between NETs markers and lymph node metastasis markers, as well as coagulation indicators, the Pearson correlation coefficient was 0.686, 0.531, 0.7, and 0.5 for MPO-DNA and DD, FIB, CD44v6, and CD109, respectively, and the Pearson correlation coefficient was 0.456, 0.503, 0.525, and 0.603 for CitH3 and DD, FIB, CD44v6, and CD109, respectively (P<0.05). In terms of diagnostic efficacy, the area under the curve (AUC) for MPO-DNA, CitH3, and MPO-DNA + CitH3 in patients with head and neck squamous cell carcinoma was 0.863, 0.892, and 0.905, respectively, with an increasing AUC of the receiver operating characteristic curve (ROC) in the order mentioned. Levels of MPO-DNA and CitH3 in patients with early-stage head and neck squamous cell carcinoma were (132.4 ± 16.4) ng/mL and (21.3 ± 2.9) ng/mL, respectively, which were lower than those in patients with advanced head and neck squamous cell carcinoma, who had MPO-DNA and CitH3 levels of (199.3 ± 33.1) ng/mL and (26.6 ± 3.7) ng/mL, respectively. The serum concentrations of FIB, DD, CD44v6, and CD109 in patients with high MPO-DNA expression were significantly higher than those in patients with low MPO-DNA expression (all P<0.05). The serum concentrations of FIB, CD44v6, and CD109 in patients with high CitH3 expression were significantly higher than those in patients with low CitH3 expression (all P<0.05). Conclusion The study indicates a potential causal relationship between NETs and HNSCC. NETs-related markers may serve as potential biomarkers for HNSCC, as they correlate with the hypercoagulable state of the cancer. NETs-related markers have potential diagnostic utility for HNSCC and are associated with tumor progression.

OBJECTIVE: To investigate the accuracy of color Doppler ultrasound (CDU) and CT angiography (CTA) in the preoperative evaluation of perforator vessels in free posterior interosseous artery perforator (PIAP) flaps. METHODS: Between January 2020 and December 2023, 19 patients with hand skin and soft tissue defects caused by trauma were admitted. There were 11 males and 8 females, with a median age of 45 years (range, 26-54 years). The interval between injury and admission was 5-11 days (mean, 7.2 days). The skin and soft tissue defects were located on the dorsum of the hand in 8 cases and on the fingers in 11 cases. The size of defect ranged from 4.0 cm×2.5 cm to 7.5 cm×3.5 cm. After locating the perforator vessels through CDU and CTA before operation, the free PIAP flaps were designed to repair hand defects, with the size of 4.5 cm×3.0 cm-7.5 cm×4.0 cm. The defects of donor sites were directly sutured. The number and diameter of perforator vessels in the posterior interosseous artery detected by CDU and CTA were compared. The differences in localization of perforator vessels using CDU and CTA and their clinical effects were also compared to calculate the accuracy and recognition rate. During follow-up, the survival of the skin flap was observed, and the Vancouver scar scale (VSS) score was used to evaluate the healing of the donor site, while the visual analogue scale (VAS) score was used to evaluate the patient's satisfaction with the appearance of the skin flap. RESULTS: The number and the diameter of PIAP vessels was 5.8±1.2 and (0.62±0.08) mm assessed by CDU and 5.2±1.0 and (0.60±0.07) mm by CTA, showing no significant difference between the two methods ( P>0.05). The number, course, and distribution of perforator vessels of the PIAP vessels observed during operation were basically consistent with those detected by preoperative CDU and CTA. Compared with intraoperative observation results, the recognition rates of dominant perforating vessels by CDU and CTA were 95.0% (18/19) and 89.5% (17/19), respectively, and the accuracy rates were 100% (19/19) and 84.2% (16/19), with no significant difference between the two methods ( P>0.05). All flaps survived after operation, and all wounds and incisions at donor sites healed by first intention. All patients were followed up 6-13 months (mean, 8.2 months). At last follow-up, the skin flaps had elasticity and soft texture，with the patient satisfaction VAS score of 9.2±0.8. The donor sites had no obvious scar hyperplasia with the VSS score of 11.7±0.9. CONCLUSION CDU and CTA accurately identify the dominant perforator vessels and provide reliable information for vessel localization, facilitating precise flap harvesting and minimizing donor site injury. However, CDU offers superior visualization of distal end of perforator vessels in the forearm compared to CTA.
Humans ; Female ; Male ; Adult ; Perforator Flap/blood supply* ; Middle Aged ; Ultrasonography, Doppler, Color/methods* ; Computed Tomography Angiography/methods* ; Soft Tissue Injuries/diagnostic imaging* ; Hand Injuries/diagnostic imaging* ; Plastic Surgery Procedures/methods* ; Hand/surgery* ; Preoperative Care ; Arteries/diagnostic imaging*

This consensus will introduce the characteristics of fillers used in the surgical cavities of domestic nasal surgery patients based on relevant literature and expert opinions. It will also provide recommendations for the selection of cavity fillers for different nasal diseases, with chronic sinusitis as a representative example.
Humans ; Nasal Cavity/surgery* ; Nasal Surgical Procedures ; China ; Consensus ; Sinusitis/surgery* ; Dermal Fillers

BACKGROUND:During the treatment of posterolateral tibial plateau fractures through the fibular head approach,the gap between the fibular head and the lateral plateau cannot accommodate the posterior placement of a plate for all patients.OBJECTIVE:To analyze,via finite element analysis,the differences in fixation strength resulting from varying the angles and quantities of horizontal arm variable angle screws in the plate during the treatment of posterolateral tibial plateau fractures through the fibular head approach.METHODS:A finite element model was established based on CT images of the knee to ankle joints of a 30-year-old healthy adult male volunteer.The models were divided into two categories:posteriorly placed group and non-posteriorly placed group based on whether the lateral locking compression plate was posteriorly placed.The posteriorly placed group was further subdivided into groups A-D based on the offset angle of the two variable angle screws(0°,5°,10°,and 15°).The non-posteriorly placed group was subdivided into groups E and F based on offset angles(0° and 15°).Finite element analysis was used to evaluate the von Mises stress distribution,maximum von Mises stress,and compressive displacement under loads of 250,500,and 750 N,exploring the mechanical differences between the groups.RESULTS AND CONCLUSION:(1)Finite element analysis results showed that under a 750 N load,the maximum compressive displacement trend of the internal fixation device was D＜B=C=F＜A＜E.The trend for maximum von Mises stress was B＜C＜A＜D＜F＜E.The trend for maximum compressive displacement on the bone was C=D＜B＜A＜F＜E,and for maximum von Mises stress,it was B＜C＜A＜F＜D＜E.The displacement and stress trends for the six models were similar under loads ranging from 250 N to 750 N.(2)These results suggest that for posterolateral tibial plateau fractures fixed through the fibular head approach,posterior placement of the plate should aim to accommodate two screws.If only one screw can be fixed during surgery,variable angle screws should be offset in the range of 0-15° to increase the probability of securing two screws.

In July 2024,the Diagnosis Related Groups(DRG)2.0 is released based on the Notice from the National Healthcare Security Administration on Issuing the DRG 2.0 and Deepening the Relevant Work.Compared with DRG 1.1,version 2.0 was established based on a wider range of suggestions regarding the Adjacent Diagnosis Related Groups(ADRG),Major Comorbidity or Complication(MCC),and Comorbidity or Complication(CC)from various institutions.A list of disease diagnoses and surgical operations that are not used as grouping rules was compiled,and grouping efficacy was further improved by upgrading the algorithms for MCC and CC with the help of AI.Meanwhile,it is necessary to pay more attention to the number of cases of ADRG,the better methods to list the MCC/CC,the suggestions of various doctors and continuously standardize the data and update the grouping scheme of DRG.

In July 2024,the Diagnosis Related Groups(DRG)2.0 is released based on the Notice from the National Healthcare Security Administration on Issuing the DRG 2.0 and Deepening the Relevant Work.Compared with DRG 1.1,version 2.0 was established based on a wider range of suggestions regarding the Adjacent Diagnosis Related Groups(ADRG),Major Comorbidity or Complication(MCC),and Comorbidity or Complication(CC)from various institutions.A list of disease diagnoses and surgical operations that are not used as grouping rules was compiled,and grouping efficacy was further improved by upgrading the algorithms for MCC and CC with the help of AI.Meanwhile,it is necessary to pay more attention to the number of cases of ADRG,the better methods to list the MCC/CC,the suggestions of various doctors and continuously standardize the data and update the grouping scheme of DRG.

BACKGROUND:During the treatment of posterolateral tibial plateau fractures through the fibular head approach,the gap between the fibular head and the lateral plateau cannot accommodate the posterior placement of a plate for all patients.OBJECTIVE:To analyze,via finite element analysis,the differences in fixation strength resulting from varying the angles and quantities of horizontal arm variable angle screws in the plate during the treatment of posterolateral tibial plateau fractures through the fibular head approach.METHODS:A finite element model was established based on CT images of the knee to ankle joints of a 30-year-old healthy adult male volunteer.The models were divided into two categories:posteriorly placed group and non-posteriorly placed group based on whether the lateral locking compression plate was posteriorly placed.The posteriorly placed group was further subdivided into groups A-D based on the offset angle of the two variable angle screws(0°,5°,10°,and 15°).The non-posteriorly placed group was subdivided into groups E and F based on offset angles(0° and 15°).Finite element analysis was used to evaluate the von Mises stress distribution,maximum von Mises stress,and compressive displacement under loads of 250,500,and 750 N,exploring the mechanical differences between the groups.RESULTS AND CONCLUSION:(1)Finite element analysis results showed that under a 750 N load,the maximum compressive displacement trend of the internal fixation device was D＜B=C=F＜A＜E.The trend for maximum von Mises stress was B＜C＜A＜D＜F＜E.The trend for maximum compressive displacement on the bone was C=D＜B＜A＜F＜E,and for maximum von Mises stress,it was B＜C＜A＜F＜D＜E.The displacement and stress trends for the six models were similar under loads ranging from 250 N to 750 N.(2)These results suggest that for posterolateral tibial plateau fractures fixed through the fibular head approach,posterior placement of the plate should aim to accommodate two screws.If only one screw can be fixed during surgery,variable angle screws should be offset in the range of 0-15° to increase the probability of securing two screws.

Objective To investigate the predictive value of neutrophil-to-lymphocyte ratio(NLR)and other factors for hemorrhagic transformation(HT)after intravenous thrombolysis in acute ischemic stroke(AIS).Methods A retrospective study was conducted on 260 AIS patients who received intravenous thrombolysis with alteplase in Department of Neurology of Hexian People's Hospital from August 2020 to June 2024.According to HT occurred or not after thrombolysis,they were divided into HT group(n=42)and non-HT group(n=218).The clinical baseline data were compared between the two groups.Multivariate logistic regression analysis was used to iden-tify the risk factors of HT,and ROC curve was drawn to analyze the predictive value of NLR and other risk factors for HT in AIS patients after intravenous thrombolysis.Results Among the 260 AIS patients,42 cases(16.2％)had HT.The proportion of atrial fibrillation and cardioembolism type(TOAST subtype CE),white blood cell count,neutrophils count,NLR,and baseline NHISS score were significantly higher,and the lymphocyte count was obviously lower in the HT group than the non-HT group(all P＜0.05).Multivariate logistic regression analysis showed that atrial fibrillation(OR=3.361,95％CI:1.015-15.381),NHISS score ≥15(OR=7.785,95％CI:1.348-21.312),TOAST classification CE(OR=4.104,95％CI:1.156-17.256),and NLR(OR=3.165,95％CI:1.231-5.265)were independent risk factors for HT(all P＜0.05).ROC curve analysis showed that the AUC value of NLR combined with above other factors was 0.841(95％CI:0.763-0.967,P＜0.01).In Hosmer-Lemeshow goodness of fit test on the model(P=0.354),the best critical value was 0.701,the sensitivity was 86.3％,and the specificity was 84.3％.Conclu-sion NLR combined with TOAST etiological classification and other factors have a certain pre-dictive value for the occurrence of HT after intravenous thrombolysis.

Objective To investigate the clinical outcomes of cranioplasty with polyether ether ketone(PEEK)or titanium after large craniectomy in patients.Methods Clinical data of 150 patients undergoing skull repair due to large frontotemporal skull defect in our hospital from April 2018 to June 2022 were retrospectively analyzed,and they were divided into titanium mesh group and PEEK group according to different repair materials.The conditions of surgical site infection,bleeding,subcutaneous effusion,seizure,implant rupture or exposure in the two groups were compared.Results In the PEEK group,96.3％of patients needed to implant the repair material under the temporal muscle,which was significantly higher than that in the titanium mesh group(78.1％)(P＜0.05).There were no significant differences in postoperative complications including infection,bleeding,seizure,implant rupture or leakage between the two groups(P＞0.05).However,the incidence of postoperative subcutaneous effusion in PEEK group was higher than that in titanium mesh group(14.8％VS4.2％,P＜0.05),and the difference was statistically significant.Conclusion Both titanium and PEEK can be used in cranioplasty for patients with large frontotemporal cranial defects.Subcutaneous effusion is common in patients underwent cranioplasty with PEEK postoperatively,which needs to be paid more attention.

Objective To explore the risk factors of frozen shoulder,and to provide the basis for the prevention of frozen shoulder.Methods A total of 114 patients with frozen shoulder who were hospitalized in the First Affiliated Hospital of Zhejiang Chinese Medical University from January 2020 to August 2022 were included in case group,and 114 physical examination patients with no history of frozen shoulder were included in control group.The clinical data of two groups were collected and the risk factors of frozen shoulder were analyzed by multivariate Logistic regression.Results There were statistically significant differences in cervical radiculopathy,type 2 diabetes mellitus,hepatitis,chronic non-atrophic gastritis,lumbar disc herniation,osteoporosis and thyroid sarcoidosis between two groups(P<0.05).Multivariate Logistic analysis showed that cervical radiculopathy(OR=6.114,95%CI:1.458-25.642)and type 2 diabetes mellitus(OR=24.069,95%CI:4.023-144.007)were independent risk factors for the onset of frozen shoulder.Conclusion Patients with type 2 diabetes mellitus and cervical radiculopathy have a higher risk of frozen shoulder,and should pay attention to early prevention.