To address the challenges of extracting nonlinear features from motor imagery electroencephalogram(EEG)signals and effectively capturing functional connectivity between EEG channels,a classification and recognition method for motor imagery EEG signals is proposed based on mutual information and adaptive graph convolutional network.The proposed method extracts frequency domain information by sub-frequency banding on the original motor imagery EEG signals,uncovers the nonlinear relationships within EEG signals by an adjacency matrix constructed with mutual information neural estimation method,and finally achieve null-frequency feature extraction by capturing the dynamic correlation strength between channels with an adaptive graph convolutional network incorporating convolutional block attention module.On the BCI Competition Ⅳ 2a and BCI Competition Ⅲ 3a datasets,the proposed method has average accuracies of 83.14％and 88.19％,respectively,demonstrating that it can effectively reveal functional connectivity between EEG channels,providing a new approach for decoding motor imagery EEG signals.

To address the challenges of extracting nonlinear features from motor imagery electroencephalogram(EEG)signals and effectively capturing functional connectivity between EEG channels,a classification and recognition method for motor imagery EEG signals is proposed based on mutual information and adaptive graph convolutional network.The proposed method extracts frequency domain information by sub-frequency banding on the original motor imagery EEG signals,uncovers the nonlinear relationships within EEG signals by an adjacency matrix constructed with mutual information neural estimation method,and finally achieve null-frequency feature extraction by capturing the dynamic correlation strength between channels with an adaptive graph convolutional network incorporating convolutional block attention module.On the BCI Competition Ⅳ 2a and BCI Competition Ⅲ 3a datasets,the proposed method has average accuracies of 83.14％and 88.19％,respectively,demonstrating that it can effectively reveal functional connectivity between EEG channels,providing a new approach for decoding motor imagery EEG signals.

Objective:To investigate the influencing factors for splenomegaly secondary to acute pancreatitis (AP) and construction of a nomogram prediction model.Methods:The retrospective case-control study was conducted. The clinicopathological data of 180 patients with AP who were admitted to Xuanwu Hospital of Capital Medical University from December 2017 to December 2021 were collected. There were 124 males and 56 females, aged (49±15) years. Among them, 60 AP patients who developed secondary splenomegaly were taken as the case group, including 48 males and 12 females, aged (47±13)years, and the rest of 120 cases of AP without secondary splenomegaly were taken as the control group, including 76 males and 44 females, aged (50±16)years. Observation indicators: (1) occurrence and clinical characteristics of splenomegaly secondary to AP; (2) influencing factors for splenomegaly secondary to AP; (3) construction and evaluation of a nomogram prediction model for splenomegaly secondary to AP. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was analyzed using the t test. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was analyzed using the rank sum test. Count data were represented as absolute numbers, and comparison between groups was analyzed using the chi-square test or Fisher exact probability. The univariate analysis was performed using statistical methods appropriate to the data type. The optimal cut-off value was determined by the receiver operating characteristic curves. Multivariate analysis was conducted using the Logistic regression model with forward method. Based on the results of the multivariate analysis, a nomogram prediction model was constructed. The receiver operating characteristic curve was drawn, and the discrimination was evaluated using the area under curve. The consistency of the nomogram prediction model was evaluated using calibration curve, and its clinical benefit was evaluated using decision curve. Results:(1) Occurrence and clinical characteristics of splenomegaly secondary to AP. The first detection time of 60 patients with splenomegaly secondary to AP was 60(30,120)days after the onset of AP. Cases with persistent respiratory dysfunction, multiple organ failure, severity of illness as mild or moderately severe/severe, pancreatic and/or peripancreatic infection, surgery were 19, 17, 4, 56, 37, 32 for 60 patients with splenomegaly secondary to AP, versus 16, 19, 43, 77, 39, 29 for 120 patients without splenomegaly secondary to AP, respectively, showing significant differences in the above indicators between the two groups ( χ2=8.58, 3.91, 17.64, 13.95, 15.19, P<0.05). (2) Influencing factors for splenomegaly secondary to AP. Resuts of multivariate analysis showed that white blood cell count <5.775×10?/L within 24 hours of AP onset, revised computed tomography (CT) severity index >7 in 3-7 days after onset and the presence of local complications were independent risk factors influencing the splenomegaly secondary to AP ( odds ratio=3.85, 2.86, 6.40, 95% confidence interval as 1.68-8.85, 1.18-6.95, 1.56-26.35, P<0.05). (4) Construction and evaluation of a nomogram prediction model for splenomegaly secondary to AP. The nomogram prediction model was constructed based on white blood cell count within 24 hours of AP onset, revised CT severity index in 3-7 days after onset and local complications. The area under the receiver operating characteristic curve of the nomogram prediction model was 0.76 (95% confidence interval as 0.69-0.83, P<0.05), with a sensitivity of 0.87 and a specificity of 0.55. The calibration curve demonstrated consistency between the predicted rate from the nomogram prediction model and the actually observed rate. The decision curve analysis indicated that the nomogram prediction model had favorable clinical practicability. Conclusions:Patients with AP who develop secondary splenomegaly tend to have a higher severity of illness than those develop no secondary splenomegaly. White blood cell count <5.775×10?/L within 24 hours of AP onset, revised CT severity index >7 in 3-7 days after onset and presence of local complications are independent risk factors influencing splenomegaly secondary to AP, and its nomogram prediction model can predict incidence rate of splenomegaly secondary to AP.

Diffuse large B-cell lymphoma (DLBCL) can be caused by multiple factors, including virus and autoimmune function, which in turn trigger persistent activation of the B-cell receptor (BCR) signaling pathway and other related signaling pathways, which collectively promote malignant B-cell proliferation and lead to tumor formation. Studies have shown significant progress in the treatment of primary and relapsed/refractory DLBCL with Bruton tyrosine kinase inhibitor (BTKi) in combination with chemotherapy, immunotherapy and small molecule inhibitors in the setting of poor outcome with BTKi monotherapy. This article reviews the progress of BTKi combined regimens in DLBCL.

The FMS-like tyrosine kinase 3 (FLT3) gene mutation is the most common genetic mutation in acute myeloid leukemia (AML) and is associated with poor prognosis. Various targeted inhibitors have been developed for FLT3 mutations and have shown promising clinical efficacy. However, the emergence of resistance poses new challenges for targeted therapy in AML. This article provides an overview of the pathological and prognostic role of FLT3 mutations in AML, the current research progress on commonly used FLT3 inhibitors (type I and type II), the mechanisms of FLT3 inhibitor resistance, and strategies for overcoming resistance.

Objective: To compare the clinical effect of the Yu flap and the Karapandzic flap in repairing greater than 2/3 defects of the lower lip and to provide a reference for clinical application. Methods: Ten patients with greater than 2/3 lower lip defects after surgical resection of lower lip tumors and vascular malformations were enrolled: 5 patients were repaired with the Yu flap (Yu flap group) and 5 patients were repaired with the Karapandzic flap (Karapandzic flap group). Follow-up for at least 1 year was conducted to evaluate the morphology (symmetry, stoma, exposure of vermilion) and function (sensory function, motor function) of the reconstructed lower lip. Results : All the flaps survived, and all wounds showed primary healing. The lower lips reconstructed with the Yu flap or the Karapandzic flap obtained similar satisfactory oral function. The sensory function was essentially restored. There were no obvious obstacles in speech and expression, and no saliva leakage occurred. In the Yu flap group, only 1 patient had slight microstomia. In the Karapandzic flap group, 2 patients had slight microstomia and 3 patients had moderate microstomia. 90% (9/10) of the patients were very satisfied with the postoperative outcome, and 1 patient in the Karapandzic flap group was basically satisfied. Conclusion Both the Yu flap and the Karapandzic flap can be used to repair greater than 2/3 lower lip defects and reliable outcomes can be achieved. These two methods can achieve similar oral functions, but the effect of the Karapandzic flap is inferior to that of the Yu flap in terms of aesthetic appearance, and microstomia often occurs, while the Yu flap can generally maintain the original size of the mouth cleft.

Objective:To study the clinical application of laparoscopic combined with multi-video debridement in treatment of complicated infectious pancreatic necrosis (CIPN).Methods:The clinical data of 34 patients with CIPN who were treated at the Department of General Surgery, Xuanwu Hospital, Capital Medical University from August 2017 to December 2019 were retrospectively studied. Based on the different video methods used, these patients were divided into 3 groups: the laparoscopic combined with intraoperative ultrasound group, the laparoscopic combined with choledochoscopy group and the laparoscopic group. The number of operations, operation time, blood loss, postoperative complication rates, mortality rates and total length of hospital stay were compared.Results:There were 13 patients in the laparoscopic combined with intraoperative ultrasound group, with age of (56.4±13.4) years. There were 7 patients in the laparoscopic combined with choledochoscopy group, with age of (48.0±8.4) years. There were 14 patients in the laparoscopic group with age of (51.4±15.6) years. The number of operations of the laparoscopic combined with intraoperative ultrasound group, the laparoscopic combined with choledochoscopy group and the laparoscopic group were (2.2±1.1), (1.6±0.8), (2.9±1.4), respectively. The number of operations of the laparoscopic combined with choledochoscopy group were significantly less than that of the laparoscopic group ( P<0.05), but there were no significant differences among the other groups ( P>0.05). The operation time of the laparoscopic combined with intraoperative ultrasound group, the laparoscopic combined with choledochoscopy group and the laparoscopic group were (70.5±22.9) min, (65.7±19.9) min, (51.5±15.4) min, respectively. The operation time of the laparoscopic combined with intraoperative ultrasound group was significantly longer than that of the laparoscopic group ( P<0.05), but there were no significant differences among the other groups ( P>0.05). There were no differences in blood loss, postoperative complication rate, mortality rates and total lengths of hospital stay among the three groups ( P>0.05). Conclusion:Laparoscopic combined with multi-video debridement after making full use of the advantages of each of the video methods, can be used to improve treatment outcomes of patients with CIPN.

Objective: To examine the indications and effects of different surgical approaches in laparoscopic debridement for patients with infected pancreatic necrosis(IPN). Methods: The clinical data of 213 IPN patients treated by laparoscopic debridement at Department of General Surgery, Xuanwu Hospital, Capital Medical University from June 2012 to February 2019 were retrospectively analyzed.The therapeutic effects were summarized and analyzed according to different surgical approaches. There were 123 cases in retroperitoneal approach group, including 73 males and 50 females, aging of (51.3±12.4) years; 59 cases in omental sac approach group, including 32 males and 27 females, aging of (48.3±14.2) years; 23 cases in combined approach group, including 13 males and 10 females, aging of (54.3±19.7) years; 8 cases in digestive tract approach group, including 5 males and 3 females, aging of (50.2±12.5) years. Results: The time from onset to operation in retro-peritoneal, omental sac, combined and digestive tract approach groups were (44.3±22.8), (47.3±24.3), (52.6±21.2), (51.2±30.1) days, respectively; the operation time was (52.3±26.4), (64.3±29.2), (82.8±24.7), (78.2±38.1) minutes respectively; the median bleeding volume was 18, 33, 42 and 30 ml, respectively; and the first time to eat after operation was (2.5±1.6), (3.8±1.8), (3.7±2.0), (8.4±3.9) days, respectively.The incidence of complications (Clavien-Dindo grade Ⅲ and above) was 10.6%(13/123), 10.2%(6/59), 17.4%(4/23), 1/8 and the mortality was 4.9%(6/123), 3.4%(2/59), 4.3%(1/23) and 0, respectively.The overall mortality of all patients was 4.2%(9/213). The levels of inflammatory factors were significantly lower in all groups 7 days after operation than before, and no patients was converted to open surgery. Conclusion Individualized selection of the optimal laparoscopic debridement approach of pancreatic necrosis plays an important role in improving the efficacy and prognosis of IPN patients.

Objective To examine the indications and effects of different surgical approaches in laparoscopic debridement for patients with infected pancreatic necrosis(IPN).Methods The clinical data of 213 IPN patients treated by laparoscopic debridement at Department of General Surgery,Xuanwu Hospital, Capital Medical University from June 2012 to February 2019 were retrospectively analyzed.The therapeutic effects were summarized and analyzed according to different surgical approaches. There were 123 cases in retroperitoneal approach group, including 73 males and 50 females, aging of (51.3 ± 12.4)years; 59 cases in omental sac approach group, including 32 males and 27 females, aging of (48.3 ± 14.2)years; 23 cases in combined approach group,including 13 males and 10 females,aging of (54.3±19.7)years;8 cases in digestive tract approach group,including 5 males and 3 females,aging of (50.2±12.5)years. Results The time from onset to operation in retro?peritoneal, omental sac, combined and digestive tract approach groups were (44.3 ± 22.8), (47.3 ± 24.3), (52.6 ± 21.2), (51.2 ± 30.1)days, respectively; the operation time was (52.3 ± 26.4), (64.3 ± 29.2), (82.8 ± 24.7), (78.2 ± 38.1)minutes respectively; the median bleeding volume was 18, 33, 42 and 30 ml,respectively;and the first time to eat after operation was (2.5±1.6),(3.8±1.8),(3.7±2.0),(8.4±3.9) days, respectively.The incidence of complications (Clavien?Dindo gradeⅢand above) was 10.6%(13/123),10.2% (6/59),17.4%(4/23),1/8 and the mortality was 4.9%(6/123),3.4%(2/59),4.3%(1/23)and 0,respectively.The overall mortality of all patients was 4.2%(9/213).The levels of inflammatory factors were significantly lower in all groups 7 days after operation than before,and no patients was converted to open surgery.Conclusion Individualized selection of the optimal laparoscopic debridement approach of pancreatic necrosis plays an important role in improving the efficacy and prognosis of IPN patients.

Objective To examine the indications and effects of different surgical approaches in laparoscopic debridement for patients with infected pancreatic necrosis(IPN).Methods The clinical data of 213 IPN patients treated by laparoscopic debridement at Department of General Surgery,Xuanwu Hospital, Capital Medical University from June 2012 to February 2019 were retrospectively analyzed.The therapeutic effects were summarized and analyzed according to different surgical approaches. There were 123 cases in retroperitoneal approach group, including 73 males and 50 females, aging of (51.3 ± 12.4)years; 59 cases in omental sac approach group, including 32 males and 27 females, aging of (48.3 ± 14.2)years; 23 cases in combined approach group,including 13 males and 10 females,aging of (54.3±19.7)years;8 cases in digestive tract approach group,including 5 males and 3 females,aging of (50.2±12.5)years. Results The time from onset to operation in retro?peritoneal, omental sac, combined and digestive tract approach groups were (44.3 ± 22.8), (47.3 ± 24.3), (52.6 ± 21.2), (51.2 ± 30.1)days, respectively; the operation time was (52.3 ± 26.4), (64.3 ± 29.2), (82.8 ± 24.7), (78.2 ± 38.1)minutes respectively; the median bleeding volume was 18, 33, 42 and 30 ml,respectively;and the first time to eat after operation was (2.5±1.6),(3.8±1.8),(3.7±2.0),(8.4±3.9) days, respectively.The incidence of complications (Clavien?Dindo gradeⅢand above) was 10.6%(13/123),10.2% (6/59),17.4%(4/23),1/8 and the mortality was 4.9%(6/123),3.4%(2/59),4.3%(1/23)and 0,respectively.The overall mortality of all patients was 4.2%(9/213).The levels of inflammatory factors were significantly lower in all groups 7 days after operation than before,and no patients was converted to open surgery.Conclusion Individualized selection of the optimal laparoscopic debridement approach of pancreatic necrosis plays an important role in improving the efficacy and prognosis of IPN patients.