1.Phorcides analytic engine-assisted corneal topography-guided personalized LASIK for the treatment of myopia and astigmatism
Xuanyu QIU ; Xindi WANG ; Yimeng FAN ; Zhao LIU ; Shengjian MI ; Li QIN
International Eye Science 2025;25(6):1020-1025
AIM: To observe the clinical outcomes of Phorcides analytic engine-assisted topography-guided personalized laser assisted in situ keratomileusis(LASIK)for the treatment of myopia and astigmatism in virgin eyes with the refractive astigmatism significantly deviating from corneal topography.METHODS: Retrospective clinical study. A total of 32 cases(42 eyes)with myopia and astigmatism that received corneal topography-guided personalized LASIK in the Ophthalmology Refractive Surgery Center of the First Affiliated Hospital of Xi'an Jiaotong University from December 2019 to March 2021 were selected. The uncorrected distance visual acuity(UDVA), best corrected distance visual acuity(CDVA), refractive state and aberrations before and at 6 mo after surgery were recorded.RESULTS: There were 15 males and 17 females, with an age of 23.00(18.00, 29.25)years old; preoperative sphere was -5.75(-6.25, -4.00)D, and cylinder was -0.75(-1.38, -0.25)D. At 6 mo postoperatively, the UDVA exceeded the preoperative CDVA in 19 eyes(45%). The spherical equivalent(SEQ)of all eyes(100%)was -0.50 to +0.50 D at 6 mo postoperatively, and the postoperative SEQ of 23 eyes(55%)was -0.13 to +0.13 D. There were 33 eyes(79%)had a postoperative astigmatism ≤ 0.25 D, the target-induced astigmatism(TIA)was 0.94±0.96 D, and the surgically induced astigmatism(SIA)was 0.94±0.86 D, with no statistical significance between TIA and SIA(P>0.05). The astigmatism axial deviation ranged from -5° to +5° in 33 eyes(79%)at 6 mo postoperatively. Compared to pre-operation, the total higher-order aberrations and spherical aberrations within the central 6 mm diameter of the anterior corneal surface increased at 6 mo postoperatively(Z=-3.778, P<0.001; Z=-4.929, P<0.001); the postoperative coma aberrations had no change(Z=-1.763, P=0.078); the postoperative trefoil aberrations decreased(Z=-2.490, P=0.013). Compared to pre-operation, the Strehl ratio of the anterior corneal surface increased significantly at 6 mo after surgeries(t=-5.401, P=0.013).CONCLUSION: Using the Phorcides analytic engine to assist topography-guided personalized LASIK for the treatment of myopia and astigmatism in virgin eyes with the refractive astigmatism significantly deviating from topography-measured astigmatism can achieve good therapeutic effects. Postoperative UDVA exceeded preoperative CDVA in nearly half of the eyes, and the quality of postoperative corneal imaging was improved.
2.Comparative study of MS-39, Sirius, and Pentacam in assisting size selection of implantable collamer lens
Jiaqi YUE ; Xindi WANG ; Yimeng FAN ; Zhao LIU ; Cheng PEI
International Eye Science 2025;25(9):1505-1510
AIM: To assess the consistency of the new anterior segment analyzer, MS-39, the Sirius and Pentacam in measuring corneal white-to-white(WTW)and central anterior chamber depth(ACD), and to compare their differences in guiding implantable collamer lens(ICL)size selection.METHODS: Retrospective case study. A total of 210 consecutive patients(420 eyes)who treated at the Ophthalmology Refractive Surgery Center of the First Affiliated Hospital of Xi'an Jiaotong University between September 2019 and September 2020 were enrolled. Three anterior segment analysis systems, MS-39, Sirius, and Pentacam, were utilized to assess the WTW and ACD, with comparative analysis of the results. The sizing of the ICL V4c was simulated using the method recommended by the STAAR company. Data correlation and consistency were evaluated.RESULTS: The WTW measurement results obtained from MS-39, Sirius, and Pentacam were 11.39±0.35, 11.42±0.36, and 11.46±0.35 mm, respectively. Notably, the WTW measurement value from MS-39 was significantly lower than that from Pentacam(P=0.002), while no statistically significant differences were observed between MS-39 and Sirius, or between Sirius and Pentacam(all P>0.05). The WTW measurements from the three devices exhibited a strong positive correlation, with correlation coefficients(r)of 0.942 between MS-39 and Sirius, 0.925 between MS-39 and Pentacam, and 0.882 between Sirius and Pentacam(all P<0.0001). The ACD measurements values from the MS-39, Sirius and Pentacam were 3.28±0.22, 3.28±0.24, and 3.21±0.23 mm, respectively. While, no statistically significant difference was found between MS-39 and Sirius(P>0.05), both measurements were significantly higher than that of Pentacam(both P<0.0001). The ACD measurements also demonstrated a strong positive correlation, with r values of 0.959 between MS-39 and Sirius, 0.947 between MS-39 and Pentacam, and 0.932 between Sirius and Pentacam(all P<0.0001). In terms of ICL size selection based on the measurements from the three devices, the 12.6 mm size was the most frequently selected, while the 13.7 mm size was the least common, the distribution of size selections across the devices was similar.CONCLUSION: MS-39 demonstrated strong positive correlation with both Sirius and Pentacam for WTW and ACD measurements, indicating that the results can be considered clinically interchangeable. Furthermore, the outcomes derived from MS-39 for ICL size selection were closely aligned with those from Sirius and Pentacam, suggesting its clinical feasibility.
3.Related factors and equity of health status among floating population in China based on geographic information system analysis
Xiaohan LIU ; Fan YANG ; Xindi WANG ; Ning HUANG ; Taozhu CHENG ; Jing GUO
Journal of Peking University(Health Sciences) 2024;56(2):223-229
Objective:To understand the health status,influencing factors and spatial distribution of the Chinese floating population and to evaluate the health equity of the floating population.Methods:All the data were collected from the 2017 Migrant Population Dynamic Monitoring Survey in China,binary Logistic regression was used to analyze the factors that might affect the health of the floating population,and the concentration index method was used to evaluate the health equity of the floating population.Spa-tial autocorrelation analyses the spatial aggregation of health status and health equity.Results:The un-healthy rate of the floating population in China was 2.71%.Age and gender show a statistically signifi-cant impact on self-rated health;that is,as age increases,the self-rated health of the migrant population gradually deteriorates,and women are more likely to think that they are unhealthy.Fairness analysis shows that the concentration index of the floating population is 0.021 7,the urban household registration floating population is 0.021 6,and the rural household registration floating population is 0.021 9.It is shown that the fairness of the health status of the floating population is biased towards the high-income class,and the rural household registration floating population's health unfairness is greater than that of the urban household registration migration population.Moreover,Moran's i=0.211 for self-rated health and Moran's i=0.291 for the unhealthy rate indicate that self-rated health has a spatial aggregation trend.Moran's i=0.136 showed the characteristics of spatial clustering,and the two-week prevalence fairness of the floating population was mainly in the northern and southeastern coastal areas.Conclusion:In general,the health status of the floating population in China is relatively good.The main influencing factors of health included gender and age.The central tendency of health inequity is reflected in the south-east coastal and northern regions,which are characterized by poverty.Attention to spatial aggregation is not only helpful to analyze the reasons of floating population,but also to study the health differences between different regions and health-related factors,to improve the overall health level of the whole population.
4.Short-term clinical efficacy, safety and prognostic influencing factors of CyberKnife for treatment of brain metastases in non-small cell lung cancer
Xindi LI ; Dan YUE ; Xiaoyue QUAN ; Xia FAN ; Min LIU ; Shixin LIU ; Hongfen WU
Cancer Research and Clinic 2024;36(6):409-415
Objective:To explore the short-term clinical efficacy, safety and patients' prognostic influencing factors of CyberKnife for the treatment of brain metastases in non-small cell lung cancer (NSCLC).Methods:A retrospective case series study was conducted. The clinical data of 58 NSCLC patients who received CyberKnife treatment for brain metastases at Jilin Cancer Hospital from July 2020 to January 2022 were retrospectively analyzed. At 3 months after CyberKnife treatment for brain metastases, and the efficacy of radiotherapy was evaluated on the basis of changes of brain metastases detected by contrast-enhanced magnetic resonance imaging (MRI) of the head. Overall survival (OS) and local recurrence-free survival (LRRFS) were analyzed in 58 patients by using the Kaplan-Meier method; the efficacy of cumulative brain metastasis volume for determining the survival of CyberKnife-treated NSCLC patients with brain metastases was analyzed by using the receiver operating characteristic (ROC) curve with the survival status of patients during the follow-up period as the gold standard, and the optimal cut-off value of cumulative brain metastasis volume was obtained; the clinical factors affecting OS and LRRFS of CyberKnife-treated NSCLC patients with brain metastases were analyzed by univariate and multivariate Cox proportional hazards models, and the adverse reactions associated with CyberKnife treatment were evaluated.Results:Among the 58 patients, 26 (44.8%) were male and 32 (55.2%) were female, with a median age [ M ( Q1, Q3)] of 64 years old (56 years old, 70 years old); there were 1-7 brain metastatic lesions in each patient, and there were 98 brain metastatic lesions in the 58 patients. There were 2 deaths (3.4%) within 3 months after CyberKnife treatment. At 3 months after treatment, there were 3 cases (5.4%) in complete remission, 36 cases (64.3%) in partial remission, 13 cases (23.2%) in stable disease, and 4 cases (7.1%) in disease progression in the remaining 56 patients. ROC curve analysis showed that the area under the curve for determining the survival of CyberKnife-treated NSCLC patients with brain metastases based on the cumulative brain metastasis volume was 0.593 (95% CI: 0.423-0.763), and the optimal cut-off value of cumulative brain metastasis volume was 15 cm 3. Median follow-up time was 12.6 months (7.5 months, 17.9 months). The 6- and 12-month OS rates were 91.3% and 79.5%, respectively, and the 6- and 12-month LRRFS rates were 93.0% and 89.2%, respectively. Multivariate Cox regression analysis showed that the Karnofsky functional status score (>70 points vs. ≤70 points, HR= 0.103, 95% CI: 0.019-0.545, P = 0.007), control of extracranial tumor (controlled vs. uncontrolled, HR = 0.145, 95% CI: 0.049-0.429, P < 0.001), cumulative brain metastasis volume (≤15 cm 3vs. >15 cm 3, HR = 0.105, 95% CI: 0.028-0.399, P = 0.001) were independent influencing factors for poor OS, and the control of extracranial tumor (controlled vs. uncontrolled, HR = 0.062, 95% CI: 0.006-0.616, P = 0.018), cumulative brain metastasis volume (≤15 cm 3vs. >15 cm 3, HR = 0.440, 95% CI: 0.007-0.292, P = 0.001), and target area total bioequivalent dose (BED) (≤60 Gy vs. >60 Gy, HR = 5.299, 95% CI: 1.020-27.530, P = 0.047) were independent influencing factors for poor LRRFS. Only grade 1-2 headache [53.5% (31/58)], nausea and vomiting [36.2% (21/58)] and other adverse reactions occurred after treatment, and no ≥grade 3 adverse reactions occurred. Conclusions:CyberKnife treatment for NSCLC brain metastases has high local control rate and short-term survival rate with mild adverse effects. Karnofsky functional status score, control of extracranial tumor and cumulative brain metastasis volume may affect OS of CyberKnife-treated NSCLC patients with brain metastases, and the control of extracranial tumor, cumulative brain metastasis volume and total BED may affect local recurrence.
5.Investigation of Patient Satisfaction Degree with ECG Examination in a Tertiary A Hospital and Its Improvement Strategy
Wei YUAN ; Xindi WANG ; Yingying LIU ; Yanning YUN ; Hansen ZHAO ; Juanli XING
Chinese Medical Ethics 2023;36(4):462-469
To improve overall satisfaction of patients with the hospital and build a harmonious doctor-patient relationship, a survey on satisfaction of patients with ECG examination was conducted in a tertiary A hospital. The analysis was carried out from the aspects of inspection environment, inspection process, inspection experience and overall satisfaction. Logistic regression model was used to analyze the effect of various variables on satisfaction. This paper found that the overall satisfaction rate of patients with ECG examination was 85.18%, lower than that of outpatients. Patients with different characteristics had different satisfaction degree with ECG examination. Patient satisfaction was lower on Mondays and Wednesdays than that on other inspection days, and was lower between 10 a.m. and 14 p.m. The longer the waiting time, the lower satisfaction degree of patients with examination. Based on the results, hospitals should improve the construction of humanistic soft environment to improve the medical environment, scientifically plan the medical treatment process of ECG examination, and further strengthen doctor-patient communication. The ECG room should further promote its management level and strengthen its cultural construction.
6.Dose-adjusted EPOCH-R vs. R-CHOP in frontline management of Waldeyer's ring diffuse large B-cell lymphoma: a retrospective study from a single institution.
Yuanzheng LIANG ; Xindi LIU ; Jing YANG ; Henan WANG ; Yingshi PIAO ; Liqiang WEI ; Liang WANG
Chinese Medical Journal 2023;136(2):167-175
BACKGROUND:
To compare the efficacy and safety of dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin plus rituximab (DA-EPOCH-R) with standard rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) in Waldeyer's ring diffuse large B-cell lymphoma (WR-DLBCL) at a single institution.
METHODS:
This retrospective study included 115 newly diagnosed patients with WR-DLBCL, of whom 68 patients received R-CHOP, and 47 patients received DA-EPOCH-R as their first-line treatment. The baseline features of the two groups were well balanced using a 1:1 propensity score matching method, and a total of 84 cases were obtained, including respective 42 cases in the R-CHOP and DA-EPOCH-R groups, for further survival and prognosis analysis. The primary objectives included progression-free survival (PFS) and overall survival (OS).
RESULTS:
During a median follow-up of 45 months, there were nine (21.4%) deaths in the R-CHOP group and two (4.8%) in the DA-EPOCH-R group. Kaplan-Meier analysis showed statistically significant improvements in PFS and OS in patients with DA-EPOCH-R compared with those treated with R-CHOP (log-rank test, P = 0.025 and P = 0.035, respectively). The 2-year PFS and OS rates in the DA-EPOCH-R group were 90.1% (95% confidence interval [CI]: 81.4-99.8%) and 95.2% (95% CI: 89.0-100.0%), respectively, and 80.5% (95% CI: 69.3-93.6%) and 90.5% (95% CI: 52.8-99.8%) in the R-CHOP group. Patients without B symptoms and elevated lactate dehydrogenase levels had a higher PFS in the DA-EPOCH-R group, with P values of 0.038 (hazard ratio [HR]: 0.11; 95% CI: 0.01-0.88) and 0.042 (HR: 0.19; 95% CI: 0.04-0.94), respectively. There were no statistically significant differences in clinical responses and treatment-related toxicities between the two groups.
CONCLUSION
Compared with patients received R-CHOP, those treated by DA-EPOCH-R had superior PFS, OS, and controlled toxicity in patients with WR-DLBCL.
Humans
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Rituximab/therapeutic use*
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Vincristine/therapeutic use*
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Retrospective Studies
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Prednisone/therapeutic use*
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Etoposide/therapeutic use*
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Antineoplastic Combined Chemotherapy Protocols/therapeutic use*
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Lymphoma, Large B-Cell, Diffuse/drug therapy*
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Cyclophosphamide/therapeutic use*
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Doxorubicin/therapeutic use*
7.Effect of cone-beam computed tomography image-guidance on the setup errors of stereotactic body radiotherapy for spinal metastatic tumors
Dan YUE ; Xindi LI ; Xiaoyue QUAN ; Shuchang LI ; Hongfen WU ; Shixin LIU
Cancer Research and Clinic 2023;35(4):271-277
Objective:To evaluate the effect of image-guided with cone-beam computed tomography (CBCT) based on volumetric modulated arc therapy (VMAT)-flattening filter free (FFF) on the setup errors of stereotactic body radiotherapy (SBRT) in patients with spinal metastatic tumors.Methods:The clinical data of 15 patients with spinal metastatic tumors who underwent SBRT in Jilin Cancer Hospital from August 2020 to January 2022 were retrospectively analyzed. The radiotherapy dose of bone metastasis was 32 Gy per 4 times and CBCT scanning was performed before and after radiotherapy. Every patient received radiotherapy 4 times; all 15 patients underwent SBRT 60 times in total and 120 CBCT volume images were finally obtained and analyzed. The systematic error (Σ) and random error (σ) were calculated at different correction threshold levels. The translational setup error and rotational setup error at the left-right (X axis), head-foot (Y axis) and front-back (Z axis) directions before and after radiotherapy were compared, which were expressed as Σ ± σ.Results:The pre-SBRT and post-SBRT translational setup errors were (0.14±0.27) cm and (0.07±0.19) cm, respectively ( P<0.001) in the X direction, (-0.05±0.33) cm and (0.00±0.19) cm, respectively ( P = 0.001) in the Y direction, (-0.13±0.19) cm and (-0.02±0.14) cm, respectively ( P = 0.012) in the Z direction. The pre-SBRT and post-SBRT rotational setup errors were (-0.31±0.76)° and (-0.09±0.34)°, respectively ( P < 0.001) in the X direction, (-0.13±0.88)° and (-0.07±0.36) °, respectively ( P < 0.001) in the Y direction, (0.10±0.51)° and (0.16±0.38)°, respectively ( P < 0.001) in the Z direction. Conclusions:CBCT correction could reduce Σ and σof the translational setup and rotational setup, increase the accuracy of SBRT based on VMAT-FFF for patients with spinal metastatic tumors.
8.Study on quality standard for rice-fired Glehnia littoralis
Xindi WANG ; Xiaofeng SHI ; Xiaoping ZHANG ; Dongyan LIU ; Wei SHEN ; Bin FAN ; Quhuan MA
China Pharmacy 2022;33(8):962-967
OBJECTIVE To establish a quality standard for rice-fired Glehnia littoralis . METHODS Appearance observation , powder microscopic identification and thin-layer chromatography (TLC)identification were performed for the samples of rice-fired G. littoralis decoction piece. According to the relevant methods stated in 2020 edition of Chinese Pharmacopoeia (part Ⅳ),the contents of moisture ,total ash ,acid-insoluble ash ,water-soluble extract and acid-soluble extract were determined. The contents of psoralen,zanthoxylin,bergapten,imperatorin and isoimperatorin were determined by high performance liquid chromatography (HPLC). RESULTS The rice-fired G. littoralis decoction pieces were round-like small segments ,slightly rough ,yellow(peeled) or dark yellowish brown (with peel ),special gas and slightly sweet taste. The powder was yellowish white. Under the microscope , secretions and secretory cells ,ducts,gelatinized starch granules ,ray cells ,parenchyma cells ,etc. could be seen. TLC showed the spots developed clearly. In the chromatogram of the test sample ,there was the same blue fluorescent spot at the corresponding position of the chromatogram of isoimperatorin control sample. The moisture ,total ash ,acid-insoluble ash ,water-soluble extract and ethanol-soluble extract from 9 batches of samples were 5.82%-6.27%,3.19%-3.59%,0.21%-0.27%,24.91%-30.30% and 20.66% -25.83% ,respectively. The linear range of psoralen ,zanthotoxin,bergapten,imperatorin and isoimperatorin were 0.240-2.400,0.320-3.200,0.224-2.240,0.292-2.920,0.208-2.080 µg/mL(all r>0.999 0). Limits of quantitation were 0.032 0, 0.030 0,0325 0,0.032 0,0.045 0 µg,respectively. Limits of detection were 0.100 8,0.089 6,0.071 5,0.090 0,0.132 0 µg, respectively. RSDs of prescision ,stability(24 h)and reprodu- cibility tests were less than 3%. Average recoveries were 100.56% (RSD=1.36% ,n=6),100.73%(RSD=2.25% ,n=6), 100.36%(RSD=0.98%,n=6),98.24%(RSD=0.40%,n=6) E-mail:853063968@qq.com and 99.40%(RSD=0.35%,n=6),respectively. The contents of above five components were 5.85-13.31,8.63-33.38,6.23- E-mail:shixiaofeng2005@sina.com 15.25,6.12-12.98,5.52-10.77 µg/g,respectively. The total contents were 34.20-83.47 µg/g. CONCLUSIONS It is preliminarily proposed that the moisture ,total ash and acid-insoluble ash should not exceed 7.30%,4.10%,0.30%. The water-soluble extract and ethanol-soluble extract are no less than 21.00% and 18.00%,respectively. The total content of coumarin should not be less than 52.03 µg/g(with peel )and 26.34 μg/g(peeled). Established quality standard can be used for the quality control of rice-fired G. littoralis .
9.Status quo of cognition and demand for wisdom pension among middle-aged and elderly people in Tianjin
Yan HU ; Yan WANG ; Shanshan WANG ; Hongyun WANG ; Yanhui LIU ; Xindi LI
Chinese Journal of Modern Nursing 2022;28(27):3713-3718
Objective:To understand the cognition degree and demand of the middle-aged and elderly people for wisdom pension and analyze its influencing factors.Methods:This was a cross-sectional study. From March to June 2019, the convenient sampling was used to select 486 middle-aged and elderly people in Nankai District of Tianjin as the research objects. The self-designed general information questionnaire, Wisdom Pension Cognition Questionnaire and Wisdom Pension Demand Questionnaire were used for the investigation.Results:A total of 486 questionnaires were distributed and 445 valid questionnaires were recovered, with an effective recovery rate of 91.56%. A total of 73.5 % (327/445) of the middle-aged and elderly people had high awareness of smart home appliances, 70.0 % (312/445) of smart phones, 65.2% (290/445) of WeChat and 64.9 % (289/445) of QQ. Those with a demand of more than 50% were smart stoves (63.4%) , one-button pagers (53.3%) , harmful gas and smoke alarm devices (51.7%) , community video surveillance devices (50.1%) , contacting relatives and friends by phone (59.8%) and access to information through television (66.0%) . Occupation, income of month, frequency of mobile phone use, whether to use computers and whether there was broadband at home were the common influencing factors of cognition and effective demand (all P<0.05) . The cognitive level of middle-aged and elderly people on wisdom pension was positively correlated with their demands ( r=0.486, P<0.01) . Conclusions:The middle-aged and elderly people have a low overall awareness of wisdom pension and have high but differentiated demands for wisdom pension products and services. Multi-sectoral departments of the society should cooperate and jointly promote the development of wisdom pension services.
10.Effects of sensory integration therapy on cognitive function and self-care ability in patients with mild cognitive impairment after stroke
Ying ZHAO ; Li TIAN ; Xiaoping WANG ; Wenfang ZHANG ; Hongmei LIU ; Jie ZHANG ; Xindi CAO ; Hongfei XU
Chinese Journal of Practical Nursing 2020;36(34):2655-2659
Objective:To investigate the changes of cognitive function and self-care ability in patients with mild cognitive impairment after stroke after sensory integration therapy.Methods:One hundred patients with mild cognitive impairment after stroke were divided into control group and intervention group according to the random number table method. The control group was given the routine health education path and rehabilitation training, and the intervention group was given the cognitive rehabilitation through sensory integration therapy on the basis of the control group. The cognitive function and self-care ability of the patients were evaluated by the Montreal cognitive assessment(MoCA) and daily self-care ability scale(ADL) before and after intervention.Results:After intervention, the total MoCA score, visual space, nominalization, language, abstraction and memory scores of the intervention group were 26.02±1.15, 3.50±0.76, 2.98±0.14, 2.90±0.30, 2.84±0.37 and 3.18±0.69, respectively, while those of the control group were 23.32±1.90, 2.86±1.20, 2.78±0.42, 2.82±0.39, 1.58±0.54 and 2.82±0.94, respectively. The difference between the two groups was statistically significant ( t value was -18.296--2.064, all P<0.05). The scores of attention and directional force in the intervention group were 5.44±0.67 and 5.18±0.85, respectively, while those in the control group were 5.32±0.84 and 5.14±0.78, respectively. There was no statistically significant difference between the two groups ( t value was -1.288, -0.704, P>0.05).After intervention, the total ADL score, stool, urine, toilet, eating, dressing and bathing scores of the intervention group were 65.00±5.98, 5.90±2.19, 6.40±2.27, 7.40±2.72, 7.80±2.70, 7.50±2.53 and 5.50±1.52, respectively, The control group was 53.60±10.20, 3.50±3.23, 5.00±3.50, 5.50±3.23, 5.40±3.76, 5.90±3.45, and 4.40±2.79, respectively. The difference between the two groups was statistically significant ( t value was -7.573~-2.615, all P<0.05). Conclusions:Sensory integration therapy can improve the cognitive function and self-care ability of patients with mild cognitive impairment after stroke.

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