Objective To develop an innovative recognition algorithm that aids physicians in the identification of pulmonary nodules. MethodsPatients with pulmonary nodules who underwent thoracoscopic surgery at the Department of Thoracic Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School in December 2023, were enrolled in the study. Chest surface exploration data were collected at a rate of 60 frames per second and a resolution of 1 920×1 080. Frame images were saved at regular intervals for subsequent block processing. An algorithm database for lung nodule recognition was developed using the collected data. ResultsA total of 16 patients were enrolled, including 9 males and 7 females, with an average age of (54.9±14.9) years. In the optimized multi-topology convolutional network model, the test results demonstrated an accuracy rate of 94.39% for recognition tasks. Furthermore, the integration of micro-variation amplification technology into the convolutional network model enhanced the accuracy of lung nodule identification to 96.90%. A comprehensive evaluation of the performance of these two models yielded an overall recognition accuracy of 95.59%. Based on these findings, we conclude that the proposed network model is well-suited for the task of lung nodule recognition, with the convolutional network incorporating micro-variation amplification technology exhibiting superior accuracy. Conclusion Compared to traditional methods, our proposed technique significantly enhances the accuracy of lung nodule identification and localization, aiding surgeons in locating lung nodules during thoracoscopic surgery.
Aortic valve disease is one of the major diseases threatening human health. Transcatheter aortic valve replacement (TAVR) is a new treatment for aortic disease. Preoperative evaluation is of great significance to the successful operation and the long-term quality of life of patients. The 3D printing technology can fully simulate the cardiac anatomy of patients, create personalized molds for patients, improve surgical efficiency, reduce surgical time and surgical trauma, and thus achieve better surgical results. In this review, the relevant literatures were searched, and the evaluation effect of 3D printing technology on the operation of TAVR was reviewed, so as to provide clinical reference.
Toexploretheinfluenceoflocalmassiveexcisionbeforeradicalsurgeryonprognosisofpatientswithbreastcancer,wecomparedtheprognosisbetweenthegroupunderwentlocalresectionpriortoradicalsurgery(106cases)andthegorupwithdirectradicalresection(143cases).Theresultsshowedthatthelocalrecurrencerate,distancemetastasisrateandthesurvivalrateat3,5yearsofthegroupunderwentlocalexcisionpriortoradicalsurgerywere16.0%,26.4%,79.2%,71.7%respectivelyandofthegroupunderwentdirectradicalresectionwere4.9%,16.1%,89.5%,82.5%respectively,thedeferencewassignificant(Plt;0.01,0.05,0.05,0.05respectively).Theresultsindicatethatthelocalexcisionbeforeradicalsurgerycanaffecttheprognosisofpatientswithbreastcancer.
ObjectiveTo investigate the guiding value of preoperative imaging and intraoperative rapid pathology in the diagnosis and treatment of pancreatic cystic neoplasm (PCN).MethodsThe clinical data of 205 patients with PCN diagnosed by pathology from July 14, 2003 to July 31, 2018 were analyzed retrospectively. The precise and fuzzy diagnostic rate and misdiagnosis rate of PCN by preoperative imaging and intraoperative rapid pathology were analyzed.ResultsThe most commonly used preoperative imaging methods were ultrasound and CT, in 146 cases (82.95%) and 141 cases (80.11%), respectively. There were 54 cases (30.68%) with MRI. Of them, 47 cases were examined by single examination, 129 cases received combined examination, of which 123 cases (95.35%) were examined by ultrasound combined with CT. The precise and fuzzy diagnostic rate of PCN by ultrasound, CT, and MRI were 81.51% (119/146), 81.56% (115/141), and 87.04% (47/54), respectively. Comparison of ultrasound with CT and MRI showed statistical significance (χ2=47.747, P<0.001; χ2=11.873, P=0.018), but no significant difference was observed between CT and MRI (χ2=5.012, P>0.05). In 27 cases of false diagnosis by ultrasound, no obvious abnormality was found in 14 cases (51.85%), followed by misdiagnosis as pancreatic pseudocyst (11 cases, 40.74%). Of the 26 cases misdiagnosed as pancreatic cancer by CT, 57.69% (15 cases) were misdiagnosed as pancreatic cancer; 7 cases were misdiagnosed by MRI, 42.86% (3 cases) of patients were misdiagnosed as pancreatic cancer and pancreatic pseudocyst. Thirty-one cases were misdiagnosed by intraoperative rapid pathology, and most of them misdiagnosed as pancreatic pseudocyst (10 cases, 32.26%). The next was SPN misdiagnosed as pancreatic neuroendocrine tumor (7 cases, 22.58%). The precise and fuzzy diagnostic rates of PCN were 81.58% (124/152), 86.84% (132/152), and 97.37% (148/152) in preoperative imaging, intraoperative rapid pathology, and preoperative imaging combined with intraoperative rapid pathology, while the misdiagnostic rates were 18.42% (28/152), 13.16% (20/152), and 2.63% (4/152), respectively.ConclusionsIn preoperative imaging and intraoperative rapid pathological examination, it is possible that ultrasound could not find PCN lesions. CT and MRI are most likely to be misdiagnosed as pancreatic cancer. Intraoperative rapid pathological examination misdiagnosed as pancreatic pseudocyst is most common. Perfect preoperative imaging and rapid intraoperative pathology can improve the correct diagnosis rate of PCN and avoid unreasonable surgical intervention measures.
PurposeTo analyze the effect of medication withdraw (MW) on long-term electroencephalogram (EEG) monitoring in children who need preoperative assessment for refractory epilepsy.MethodsRetrospective analysis was performed on the data of preoperative long-term EEG monitoring of children with refractory epilepsy who needed preoperative evaluation in the Pediatric Epilepsy Center of Peking University First Hospital from August 2018 to December 2019. Monitoring duration: at least three habitual seizures were detected, or the monitoring duration were as long as 10 days. MW protocol was according to the established plan.ResultsA total of 576 children (median age 4.4 years) required presurgical ictal EEGs, and 75 (75/576, 13.0%) needed MW for ictal EEGs. Among the 75 cases, 38 were male and 37 were female. The age range was from 15 months to 17 years (median age: 7.0 years). EEG and clinical data of with 65 children who strictly obey the MW protocol were analyzed. The total monitoring duration range was from 44.1 h (about 2 days) to 241.8 h (about 10 days)(median: 118.9 h (about 5 days)). Interictal EEG features before MW were including focal interictal epileptiform discharge (IED) in 39 cases (39/65, 60%), focal and generalized IED in 2 cases (2/65, 3.1%), multifocal IED in 20 cases (20/65, 30.7%), multifocal and generalized IED in 2 cases (2/65, 3.1%), and no IED in 2 cases (2/65, 3.1%). After MW, 18 cases (18/65, 27.7%) had no change in IED and the other 47 cases had changes of IED after MW. And IEDs in 46 cases (46/65, 70.8%) were aggravated, and IED was decreased in 1 case. The pattern of aggravated IED was original IED increasement, in 41 cases (41/46, 89.1%), and 5 cases (5 /46, 10.9%) had generalized IED which was not detected before MW. Of the 46 patients with IED exacerbations, 87.3% appeared within 3 days after MW. Habitual seizures were detected in 56 cases (86.2%, 56/65) after MW, and within 3 days of MW in 80.4% cases. Eight patients (14.3%) had secondary bilateral-tonic seizure (BTCS), of which only 1 patient had no BTCS in his habitual seizures. In 56 cases, 94.6% (53/56) had seizures after MW of two kinds of AEDs.Conclusions① In this group, thirteen percent children with intractable epilepsy needed MW to obtain ictal EEG; ② Most of them (86.2%) could obtain ictal EEG by MW. The IED and ictal EEG after MW were still helpful for localization of epileptogenic zone; ③ Most of the patients can obtain ictal EEG within 3 days after MW or after MW of two kinds of AEDs;4. The new secondary generalization was extremely rare.
Objective To evaluate precise assessment methods for predicting the optimal acetabular cup size in total hip arthroplasty (THA). Methods A clinical data of 73 patients (80 hips) who underwent primary THA between December 2022 and July 2024 and met the inclusion criteria was analyzed. There were 39 males and 34 females with an average age of 66.3 years (range, 56-78 years). Among them, 66 cases were unilateral THA and 7 were bilateral THAs. There were 29 patients (34 hips) of osteoarthritis, 35 patients (35 hips) of femoral neck fractures, and 9 patients (11 hips) of osteonecrosis of the femoral head. Based on anteroposterior pelvic X-ray films, three methods were employed to predict acetabular cup size, including preoperative template planning, radiographic femoral head diameter (FHD) measurement, and intraoperative FHD measurement. The predicted acetabular cup sizes from these methods were compared with the actual implanted sizes. Results The predicted acetabular cup sizes using the preoperative template planning, radiographic FHD measurement, and intraoperative FHD measurement were (51.25±2.81), (49.72±3.11), and (49.90±2.74) mm, respectively, compared to the actual implanted cup size of (50.57±2.74) mm, with no significant difference (P>0.05). Regarding agreement with the actual implanted cup size, the preoperative template planning achieved exact matches in 35 hips (43.75%), one-size deviation in 41 hips (51.25%), and two-size deviations in 4 hips (5%); the radiographic FHD measurement achieved exact matches in 12 hips (15%), one-size deviation in 57 hips (71.25%), and two-size deviations in 11 hips (13.75%); and the intraoperative FHD measurement achieved exact matches in 26 hips (32.5%), one-size deviation in 52 hips (65%), and two-size deviations in 2 hips (2.5%). There were significant differences in agreement distributions between the three methods and the actual implanted cup sizes (H=18.579, P<0.001). Conclusion The intraoperative FHD measurement, as a simple, cost-effective, and accurate method, effectively guides acetabular cup selection, reduces the risk of prosthesis wear, enhances postoperative joint stability.
Objective To determine the accuracy of endorectal ultrasonography (ERUS) in preoperative staging of rectal cancer and investigate the limitations and pitfalls of ERUS. Methods Ninety-four patients with rectal cancer were examined preoperatively by ERUS between September 2008 and November 2009 in this hospital. The size, shape, echo pattern, infiltration depth, and extra-rectal invasion of lesions were observed. The results of ERUS staging were compared with histopathology findings of the resected specimens. Results The overall accuracy of ERUS in T staging was 63.8% (60/94). The accuracies of ERUS for pT1, pT2, pT3, and pT4 tumor were 87.2% (82/94), 76.6% (72/94), 76.6% (72/94), and 97.9% (92/94), respectively. The sensitivity, specificity, and accuracy of ERUS for advanced rectal cancer (pT3+pT4) were 70.8% (34/48), 78.3% (36/46), and 74.5% (70/94), respectively. The sensitivity, specificity, and accuracy of ERUS in lymph node metastasis were 75.0% (42/56), 42.1% (16/38), and 61.7% (58/94), respectively. There was no significant difference of accuracy among various tumor locations above anocutaneous line (P＝0.495). The accuracy of ERUS for T staging improved with experience, the T staging accuracy improved from 40.0% after assessment of 30 cases to 81.3% after 94 cases were examined (P＝0.026). Conclusions The ERUS provides a good accuracy rate for assessment of the depth of tumor invasion and lymph node metastasis of rectal cancer, and has become an important imaging tool for preoperative staging rectal cancer. The operator experience, peritumoral inflammation mainly influences the accuracy of ERUS.
Objective To systematically analyze the relevant research on the application of preoperative exercise training in the pre-rehabilitation of elderly hip fracture patients, identify the specific content, outcome indicators, and application effects of exercise intervention, in order to provide reference for medical staff to carry out relevant interventions. Methods Computer searches were conducted on domestic and foreign databases such as China National Knowledge Infrastructure, Wanfang Database, China Biomedical Literature Database, VIP, Cochrane Library, PubMed, Embase, Web of Science. The search period was from the establishment of the database to January 2024. The scoping review method was used to screen, summarize, and analyze the included studies. ResultsA total of 10 studies were included, including 3 randomized controlled trial, 1 quasi experimental study, 5 retrospective studies and 1 case report. Preoperative exercise preparation includes completing relevant examinations and providing sufficient pain relief. The types of exercise include adaptive training, resistance training, and aerobic exercise. Monitor the patient’s symptoms, signs, and adverse reactions throughout the exercise process. Outcome measures include physical activity and function, pain, average length of hospital stay, and perioperative complications. Conclusions Preoperative exercise training has a positive effect on elderly patients with hip fracture. Elderly patients with hip fracture should be well prepared for preoperative exercise, based on adaptive training, with resistance exercise as the main focus, while monitoring the patient’s physical signs and adverse events during exercise.
ObjectiveTo investigate the efficacy of different methods of reducing jaundice in patients with low malignant obstructive jaundice undergoing pancreaticoduodenectomy. Methods A retrospective analysis was performed on the clinicopathological data of patients admitted to the Department of Hepatobiliary Surgery of The Affiliated Hospital of Guizhou Medical University from January 2014 to June 2020 who were considered to have low malignant obstructive jaundice before operation and confirmed by postoperative pathological examination as pancreatic cancer, ampulla cancer, duodenal cancer or carcinoma of the lower segment of the common bile duct. Patients were devide into percutaneous transhepatic cholangial drainage (PTCD) group and endoscopic retrograde biliary drainage (ERBD) group according to preoperative biliary drainage (PBD) methods. In order to reduce selection bias, SPSS propensity matching module was used for propensity score matching analysis. The age, basic diseases (hypertension, diabetes), biochemical indexes, time of reduction of jaundice, total hospitalization time, and postoperative complications of PBD and pancreaticoduodenectomy were compared between the 2 groups. Then, the patients were divided into pancreatic cancer group and non-pancreatic cancer group (including ampulla cancer, duodenal carcinoma and lower common bile duct carcinoma) by tumor type, and compared the effect of two groups of patients receiving different PBD methods. Results A total of 84 patients, 43 males and 41 females, were included in this study, 58 (69.0%) patients with PTCD and 26 (31.0%) patients with ERBD. After PBD the serum total bilirubin, direct bilirubin, γ-glutamyl transferase, and alkaline phosphatase of the PTCD and the ERBD groups patients were lower than before PBD, the differences were statistically significant (P<0.05). Alanine aminotransferase did not change significantly before and after PBD with PTCD (P>0.05), but decreased significantly after PBD with ERBD (P<0.05). Aspartate aminotransferase did not change significantly before and after PBD with ERBD (P>0.05), but decreased significantly after PBD with PTCD(P<0.05). The PBD time and total hospitalization time of the ERBD group were shorter than those of the PTCD group, the differences were statistically significant (P<0.05). The incidences of PBD related complications (cholangitis and pancreatitis) in the ERBD group were higher than those the PTCD group, and the incidence of bleeding in the ERBD group was lower than that the PTCD group, but the differences were not statistically significant (P>0.05). In the patients with pancreatic cancer group, the PBD time by ERBD was shorter than that of the receiving PTCD, the difference was statistically significant (P=0.006). In the non-pancreatic cancer group, the total hospitalization time and PBD time of patients receiving ERBD were shorter than those receiving PTCD, and the differences were statistically significant (P<0.05). In all patients, the median survival time of PTCD group (14 months) was shorter than that in ERBD group (18 months), P=0.002; pancreatic cancer group (12 months) was shorter than non-pancreatic cancer group (16 months), P=0.034; in non-pancreatic cancer group, ERBD group (20 months) was longer than PTCD group (15 months), P=0.008. Conclusions ERBD can shorten the waiting time of operation and hospital stay as compared with PTCD, and has a longer median survival time. It can be used as the first choice for PBD in patients with low malignant obstructive jaundice.