Objective To investigate the effect of Verisyse iris-claw intraocular lens implantation on correction of high myopia.Methods9 patients with highly myopic (18 eyes and diopter between-6.75 DS to-28.00 DS) were treated with Verisyse intraocular lens implantation. All the treated eyes were observed for uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), intraocular pressure, anterior segment changes and corneal endothelium preoperatively and postoperatively.ResultsThe implantation was successfully performed in all of 18 eyes. After 3 months, 11 eyes (61.1%) had the uncorrected visual acuity (UCVA) ≥0.5; 9 eyes (50.0%) had the best corrected visual acuity (BCVA) ≥0.8. UCVA and BCVA of every eye were significant improved ( P<0.01); the mean corneal astigmatism and mean intraocular pressure were not different from preoperation ( P>0.05). In all patients, one eye was oval and 2 other eyes showed decentered phakic IOL; 2 patients (2 eyes) complained of halo and glare; no severe complications occurred.ConclusionThe implantation of Verisyse iris-claw intraocular lens for the correction of high myopia has a significantly effect.

ObjectiveTo study the effect of negative pressure suction during laser in situ keratomileusis (LASIK) on rabbit retinal structure.Methods32 New Zealand white rabbits were randomly divided into normal control, experimental control, negative suction 45 seconds and negative suction 3 minutes groups. Experimental control groups were treated only using eximer laser. In negative suction groups, rabbit eyes were suction for 45 seconds or 3 minutes by negative pressure generator. The tissues of optic nerve and retina both after negative pressure suction and of normal rabbit eyes were examined with electron and light microscope 0, 7, 14, 28 days after operation. ResultsThere was no change in the tissues of optic nerve and retina between normal control and experimental control. After the negative pressure suction for 45 s, the optic nerve and retinal cells changed lightly at different time point. After the negative pressure suction for 3 min, the optic nerve fibers and retinal cells changed sharply during postoperative instant to 14th days, which can be recovered until 28 days after operation.ConclusionUltrastructural changes of retina and optic nerve may be induced by acute intraocular pressure elevation caused by negative pressure suction during LASIK.

Objective To explore the mechanism of the secondary deterioration of neurological symptoms in Wilson' s disease (WD) at early stage of treatment using D-penicillamine. Methods Forty non-treated WD patients, 32 of encephalic and 8 hepatic type respectively, were enrolled in the study. Their neural symptoms were scored using modified Young grade. Cerebrospinal fluid (CSF) copper, serum copper, urinary copper, neuron specific enolase (NSE) in CSF and the albumin ratio CSF/serum (AR) were measured at the same time. After 3 months of treatment with D-penicillamine, neural symptoms of patients were scored again. All dates were analyzed. Results After 3 months of treatment with D-penicillamine, 15 patients (46. 9%) developed a secondary deterioration in neurological symptoms. The concentration of copper and the NSE in CSF of patients whose neural symptom was increasingly deteriorated. The serum copper declined after treatment((0. 37± 0. 09) vs (0. 25 ± 0. 08) mg/L, t = 3. 17, P < 0. 05). The 24 hours urinary copper of patients whose symptoms had deteriorated was much lower than that of patients who had not. No significant change was found in AR ratio before and after the treatment (9. 53 ± 3.18vs12.24±3.17) in the worsened group (t=1.45, P>0. 05). Conclusions The degree of the injury in the neural system and the dose of penicillamine may affect the deterioration of the neural symptom.

Objective To explore the application of 3D printing technology in individual pelvic structure of female and its value in obstetrics and gynecology based on the CT datasets of the pelvic structure and digital three-dimensional reconstruction. Methods CTA image dataset of a patient from gynecology department was obtained for constructing three-dimensional models of each organ using the digital three-dimensional reconstruction technology , then the digital 3D model with the same size as the model displayed was printed with Z510 3D printer. Results 3D models of patient′s lumbosacral vertebrae, aorta artery, common iliac artery, internal and external iliac artery , postcava , common iliac vein , internal and external iliac vein , pelvis ureter , uterus and uterine artery were printed out in the same size replica of the virtual reality model. Conclusion 3D printed model has all the features of 3D vision and can be touched and felt by people , which can provide new insights for medical education, clinical and medical research.

Objective To investigate the risk factors for postoperative cardiorespiratory complications within one month after operative treatment of hip fracture in the elderly. Methods Data of clinical examination ,samples test ,CT or MRI images were collected in 665 hip fracture patients aged 60 years and over who were admitted to our hospital from January 2010 to December 2014. Risk factors for postoperative cardiorespiratory complications within one month after operation were analyzed by correlation analysis and multiple regression analysis. Results The incidence of postoperative complications in cardiovascular system was 4.5% (30/665)in all patients.The risk factors for postoperative circulatory complications included gender ,high white blood cell(WBC)counts before operation ,hypoalbuminemia ,a low hemoglobin level (＜ 35 g/L ) ,renal insufficiency , hyponatremia ,pulmonary arterial hypertension ,segmental ventricular wall abnormal motion ,abnormal ST segment changes. The incidence of postoperative complications in respiratory system was 6.9% (46/665)in all patients. The risk factors for postoperative respiratory complications included high WBC counts before operation ,hypoalbuminemia ,chronic obstructive pulmonary disease (COPD ) , bronchiectasis and emphysema ,history of respiratory failure and abnormal lung markings (P＜0.05 or P＜ 0.01 ). Conclusions The elderly hip fracture patients have high incidence of postoperative respiratory and circulatory complications , and risk factors for these complications include accompanying diseases ,hypoalbuminemia ,abnormal echocardiography and electrocardiogram and hyponatremia.

Objective:To evaluate our self-designed stick supporting reposition which was used to treat irreducible intertrochanteric fractures.Methods:A retrospective study was conducted of the 138 patients with irreducible intertrochanteric fracture (an observational group) who had been treated by stick supporting reposition followed by intramedullary nailing at Department of Orthopaedics, Beijing Hospital between April 2015 and December 2019. They were 45 males and 93 females with an age of (79.9±8.2) years; by AO classification, there were 25 cases of type 31-A1, 98 cases of type 31-A2 and 15 cases of type 31-A3. The other 142 patients with irreducible intertrochanteric fracture were included as a control group who had been treated by open or limited open reduction and intramedullary nailing between January 2010 and March 2015. The 2 groups were compared in terms of reduction time, operation time, intraoperative blood loss, reduction quality, fracture union time and complications.Results:The 2 groups were comparable because there was no significant difference between them in preoperative general data or follow-up time ( P>0.05). The reduction time [(12.0±3.4) min], operation time [(64.1±6.5) min], and intraoperative blood loss [(228.0±40.0) mL] in the observational group were significantly less than those in the control group [(18.3±8.9) min, (72.3±11.2) min and (319.1±95.0) mL] ( P<0.05). The reduction quality in the observational group (82 excellent and 56 acceptable cases) was significantly better than that in the control group (63 excellent, 65 acceptable and 14 poor cases) ( P<0.05). The fracture union time for the observational group [(3.8±0.9) months] was significantly shorter than that for the control group [(4.0±0.9) months] ( P>0.05). There were 6 cases of internal fixation failure and 8 cases of hip varus deformity in the control group, but no such complications occurred in the observational group. Conclusion:In the treatment of irreducible intertrochanteric fractures, compared with open or limited open reduction, our stick supporting reposition may shorten operation time, reduce intraoperative blood loss and improve quality of fracture reduction.

Objective:To analyze the risk factor of postoperative delirium in the elderly hip fracture patients.Methods:A total of 1051 patients with hip fracture aged 60 years and over, admitted to Beijing Hospital from January 2010 to December 2017 were retrospectively analyzed.They were divided into a postoperative delirium group(n=156)with 56 males and 100 females, 81 femoral neck fractures and 75 intertrochanteric fractures, and the control group(n=895)with no delirium, receiving the corresponding treatment in the same period.The complications, laboratory tests, fracture types, operation methods, the time from fracture to operation, operation time, intraoperative blood loss, intraoperative blood transfusion were compared between the two groups.Risk factors of postoperative delirium in the elderly hip fracture patients were screened using the binary multi-factor logistic regression analysis.Results:Of the 1 051 patients, 156 cases(14.8%)delirium occurred.There was no significant difference in fracture type and operation methods( P>0.05)between the 2 groups.The age was significantly older in the observation group(82.9±6.6)years than in the control group(79.9±7.2)years.The serum albumin before operation(37.1±2.9)g/L, creatinine clearance rate(52.4±22.2)ml·min -1·(1.73 m 2) -1in the observation group were significantly lower than in the control group[(37.8±3.8)g/L, (59.0±30.0)ml·min -1·(1.73 m 2) -1]( P<0.05). The past dementia rate was higher in delirium group[19.8%(31 cases)]than in control group[2.2%(20 cases)], with statistically significant difference( χ2=89.503, P<0.01). The proportion of patients with more than two medical diseases was higher in delirium group[51.9%(81 cases)]than in control group[40.3%(361)]( χ2=7.320, P<0.01). There were no significant differences(all P>0.05)between.the two groups in hemoglobin, white blood cell, serum K and Na, American Society of Anesthesiologists(ASA)grade, and the incidences of Parkinson's disease, pulmonary diseases and cardiovascular diseases(all P>0.05). The binary multi-factor Logistic regression analysis showed that the age, past dementia and kidney dysfunction were the risk factors for the postoperative delirium in the elderly hip fracture patients(all P>0.05). Conclusions:The incidence of postoperative delirium in the elderly hip fractures patients is high.Age, past dementia and kidney dysfunction are the risk factors for postoperative delirium in the elderly hip fracture patients, which should be prevented and improved preoperatively.

Objective:To establish a visualized nomogram which can predict the rate of 30-day complications in the elderly patients after hip fracture.Methods:A retrospective study was conducted to analyze the clinical data of 1,074 patients with hip fracture aged 60 years and over who had been admitted to Department of Orthopedics, Beijing Hospital from January 2010 to December 2017. There were 335 males and 739 females with an average age of (80.3±7.3) yeas, 529 intertrochanteric fractures of the femur (all fixed with intramedullary nails after closed reduction), and 545 femoral neck fractures (including 470 ones treated with artificial femoral head replacement and 75 ones treated with artificial total hip replacement). The duration between injury to operation was (6.2±3.7) d. After the complications within 30 days after surgery were recorded, the risk factors for postoperative complications were screened using the binary multi-factor logistic regression analysis. The visualized nomogram and calibration graph were established with the risk factors screened.Results:Of the 1,074 patients, 28.49% (306/1,074) suffered from 30-day complications. The multivariate regression analysis showed that age ( OR=1.050, 95% CI: 1.022 to 1.080, P=0.001), time from injury to surgery ( OR=1.043, 95% CI: 1.005 to 1.083, P=0.027), white blood cell count ( OR=1.093, 95% CI: 1.033 to 1.158, P=0.002), serum albumin level ( OR=0.930, 95% CI: 0.883 to 0.980, P=0.007), troponin I ( OR=195.983, 95% CI: 2.224 to 17,268.296, P=0.021), respiratory system comorbidities ( OR=2.020, 95% CI: 1.287 to 3.170, P=0.002),cardiovascular comorbidities ( OR=1.388, 95% CI: 1.098 to 1.754, P=0.006), and neurological system comorbidities ( OR=1.778, 95% CI: 1.346 to 2.349, P<0.001) were the risk factors for 30-day complications after surgery in elderly patients with hip fracture. Based on these risk factors, a nomogram was created, with an area under the curve of 0.714. The calibration graph showed that the incidence predicted was close to that measured. Conclusion:The present study has established a visualized nomogram which can predict the rate of 30-day complications in the elderly patients after hip fracture based on age, time from injury to surgery, white blood cell count, serum albumin levels, troponin I, and cardiovascular, respiratory and neurological complications.

Objective:To explore the feasibility of staging Wilson's disease (WD) based on imaging indexes, and evaluate the clinical characteristic differences of WD patients at different stages.Methods:Sixty WD patients (40 with cerebral type and 20 with hepatic type) hospitalized in Department of Neurology, First Affiliated Hospital of Sun Yat-sen University from July 2015 to June 2022 and 20 age- and gender-matched normal controls were selected. All subjects accepted susceptibility-weighted imaging (SWI), diffusion tensor imaging (DTI), magnetic resonance spectroscopy (MRS); 7 regions of interest were selected: globus pallidus, caudate nucleus, putamen, thalamus, cerebellum, midbrain and pons; their fractional anisotropy (FA), corrected phase (CP), N-acetylaspartate/creatine (NAA/Cr) values were measured. According to DTI, SWI and MRS results, WD patients were divided into group of metal deposition stage (decreased CP, normal FA and NAA/Cr), group of fiber damage stage (abnormal FA, normal NAA/Cr), and group of neuron necrosis stage (decreased NAA/Cr); the clinical data (modified Young scale scores, Child-Pugh grading of liver function, serum copper content, and urinary copper content) and imaging indexes (FA, CP, and NAA/Cr) among the 3 groups and control group were compared. Results:Among the 60 patients, 19 patients were at metal deposition stage (including 18 with liver type and 1 with brain type), 28 patients at fiber injury stage (including 2 with liver type and 26 with brain type), and 13 patients at neuron necrosis stage (all brain type). (1) Compared with group of metal deposition stage and fiber damage stage, group of neuron necrosis stage had significantly decreased urinary copper content ( P<0.05). The modified Young scale scores in groups of metal deposition stage, fiber injury stage and neuronal necrosis stage increased successively; Child-Pugh grading in group of metal deposition stage was higher than that in groups of fiber injury stage and neuronal necrosis stage. (2) Compared with groups of metal deposition stage and neuron necrosis stage, CP values in the globus pallidus and substantia nigra in group of fiber injury stage group were significantly decreased ( P<0.05). Compared with groups of metal deposition stage and fiber injury stage, the FA value in the putamen and NAA/Cr value in the pallidum, thalamus and caudate nucleus in group of neuron necrosis stage were significantly decreased ( P<0.05). Conclusion:Disease stages of WD patients can be divided by imaging methods; neurological symptoms gradually worsen following progressed WD.

OBJECTIVE To investigate the pharmacodynamic effects of the Citri Grandis Exocarpium extract on anorexia model immature rats.METHODS Ten immature rats were randomly selected as the control group and given regular diet， while anorexia model was induced in the remaining 50 immature rats using the etiological simulation method. The immature model rats were divided into the model group， Jianwei xiaoshi tablet group （0.65 g/kg）， Citri Grandis Exocarpium extract low-dose， medium- dose and high-dose groups （0.5， 1.0， 2.0 g/kg）. After 14 d of continuous intragastric administration， the body mass and food intake of rats in each group were observed， and the gastric acid concentration， pepsinase activity， serum levels of gastrin （GAS）， motilin （MTL） and gastric inhibitory peptide （GIP） were measured. The histopathological changes in the gastric tissue were observed.RESULTS Compared with control group， the food intake， gastric acid concentration， pepsin activity， the levels of GAS and MTL were significantly decreased and GIP level was significantly increased in the immature rats of model group （P＜0.05）； gastric histopathological examination showed significant gastric mucosal congestion and loosening and detachment of epithelial cells. Compared with model group， all administration groups showed different degrees of improvement in the above indexes and decreased gastric histopathological damage after drug intervention.CONCLUSIONS Citri Grandis Exocarpium extract improves gastric motility and protects gastric mucosa in the immature rats by regulating the concentration of gastric acid， pepsin activity， the levels of GAS， MTL and GIP， thus improving anorexia in immature rats.