1.Mechanism of Buzhong Yiqitang in Ameliorating Thyroiditis Damage in AIT Mice by Modulating TLR4/NF-κB/AIM2 Signaling Pathway
Zhuo ZHAO ; Zhe JIN ; Zhengzheng LI ; Xuanlin GUO ; Jiayun LI ; Tongran GAO ; Pin LI ; Zhimin WANG ; Yuanping YIN ; Ziyu LIU ; Xiao YANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(18):1-9
ObjectiveTo explore the mechanism of Buzhong Yiqitang in ameliorating inflammatory injury in autoimmune thyroiditis (AIT) mice based on the Toll-like receptor 4(TLR4)/nuclear transcription factor-kappa B(NF-κB)/absent in melanoma 2(AIM2)inflammasome signaling pathway. MethodThe 120 genetically susceptible 8-week-old NOD.H-2h4 mice were selected and randomly divided into control group, model group, low, medium and high dose groups of Buzhong Yiqitang (4.78, 9.56, 19.12 g·kg-1), and western medicine group (selenium yeast tablets, 3.033×10-5 g·kg-1). The AIT model mice in each group drank ad libitum 0.05% sodium iodide aqueous solution for 8 weeks to establish the AIT model, and the control group drank ad libitum distilled water. Eight weeks later, the mice in each dosing group were divided into groups and gavage. The swelling of thyroid tissue was observed with the naked eye, and the weight of spleen was weighed. The content of serum inflammatory factors interleukin-1β (IL-1β), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) was measured by enzyme-linked immunosorbent assay (ELISA), and Real-time PCR was used to detect the expression of HMGB1, TLR4, AIM2, NF-κB p65,apoptosis-associated speck-like protein(ASC),cysteinyl aspartate-specific protease-1(Caspase-1), IL-1β mRNA. Western blot was used to detect the expression of high motility group protein 1 (HMGB1), TLR4, AIM2, NF-κB p65, phosphorylation(p)-NF-κB p65, ASC, Caspase-1, and IL-1β proteins in thyroid tissue, and immunofluorescence staining was used to observe the protein expression of HMGB1, AIM2, and NF-κB p65 in thyroid tissue of mice. ResultCompared with the control group, the thyroid tissue of mice in the model group was significantly swollen, the spleen quality was significantly increased, and the expression of HMGB1, TLR4, NF-κB p65, AIM2, ASC, Caspase-1, IL-1β in thyroid tissue was significantly increased (P<0.01). Compared with the model group, the swelling of thyroid tissue in mice in each dose group of Buzhong Yiqitang was improved, the quality of spleen was significantly reduced, and the expression of HMGB1, TLR4, AIM2, NF-κB p65, p-NF-κB p65, ASC, Caspase-1, IL-1β in thyroid tissue was significantly reduced (P<0.05, P<0.01). ConclusionBuzhong Yiqitang can effectively improve the inflammatory injury of AIT, and regulating the abnormal activation of the TLR4/NF-κB/AIM2 inflammasome signal pathway may be one of its intervention mechanisms.
2.Literature Analysis of the Distribution of Clinical Trial Characteristics and Disease Spectrum of Five-Tone Therapy
Hejing PAN ; Lin HUANG ; Xuanlin LI
Journal of Zhejiang Chinese Medical University 2024;48(10):1224-1232
[Objective]To explore the therapeutic characteristics,technical points and disease spectrum distribution of clinical studies on five-tone therapy,and to provide a reference for the scientific design and implementation of clinical trials on five-tone therapy.[Methods]Retrieve randomized controlled trial(RCT)literature on five-tone therapy from 9 major databases including China National Knowledge Infrastructure(CNKI),VIP,Wanfang Data,China Biology Medicine disc(CBMdisc),PubMed,Embase,Web of Science,Cochrane Library,and Clinical Trails.Extract information such as literature titles,first authors,symptoms,and intervention measures.Use bibliometric methods to analyze the sample size,intervention methods,treatment frequency,treatment environment,control methods,and symptom spectrum of the included studies.[Results]The sample size of the inclusion of 491 articles was mostly focused on 60~100 patients(60.08%),and five-tone therapy was often used in combination with auricular acupressure,traditional Chinese medicine and acupuncture.Treatment frequency<1 session per day,treatment duration<30 min/session and treatment duration>28 days were the main treatment characteristics.Control measures can be categorized into four types:Chinese medical treatment,western medical treatment,music therapy and blank control,with western medical treatment being used most frequently(446 times).Totally 314 articles(63.95%)reported specific varicosities,of which the Jue tone was the highest,for a total of 108 times.Music therapy involved a total of 66 conditions,which were distributed among 17 disease systems,and the top three most frequent appropriate disease systems were mental and behavioral disorders(112 articles),neurological disorders(76 articles),and oncological disorders(71 articles).[Conclusion]The five-tone therapy has a wide range of indications and great potential for clinical application,but there is still a need to establish standardized standards in terms of treatment time,course of treatment,and other technical aspects.In the future,it is still necessary to design and implement more scientific experimental plans to promote the rational application and promotion of five-tone therapy.
3.Epidemiological analysis of in patients with sepsis in a large tertiary general hospital in Southwest China
Jing FU ; Ruipeng ZHANG ; Meixin XU ; Xin WANG ; Yang ZHANG ; Xuanlin FENG ; Li CHANG
Chinese Critical Care Medicine 2024;36(6):574-577
Objective:To analyze the epidemiological characteristics of hospitalized patients diagnosed with sepsis in a large class Ⅲ general hospital in Southwest China in a period of 2 years, and to explore the risk factors related to death in patients with sepsis.Methods:A retrospective study was conducted to select patients with sepsis admitted to Sichuan Provincial People's Hospital from September 1, 2021 to August 31, 2023, and general characteristics such as gender, age, discharge diagnosis, discharge department, hospitalization cost, length of stay, and prognosis during hospitalization were collected. The baseline of two groups of patients were compared, and the risk factors of in-hospital cause of death in patients with sepsis were analyzed by multivariate Logistic regression.Results:A total of 3 568 patients with sepsis were included with median age of 58 (35, 74) years old. Of all patients, there were 2 147 males (60.17%). The median length of hospitalization was 13 (8, 24) days, and the median hospitalization cost was 3.98 (1.87, 8.83) ten thousand yuan. The departments with more than 100 cases of sepsis in 2 years were central intensive care unit (ICU), pediatrics department, nephrology department, emergency medicine department, emergency intensive care unit (EICU), infectious department, respiratory medicine department, hematology department, neonatal care unit and emergency surgical department. A total of 1 210 patients (33.91%) admitted to ICU (including central ICU and EICU). The hospitalization cost of ICU patients were higher [6.7 (3.1, 15.5) ten thousand yuan], the hospitalization duration was longer [9 (3, 17) days], and the mortality was higher [35.29% (427/1 210)]. Among 3 568 patients with sepsis, 448 died and 3 120 survived during hospitalization. The age, male proportion and hospitalization cost of patients with sepsis in the death group were significantly higher than those in the survival group [age (years old): 75 (60, 86) vs. 57 (30, 71), male proportion: 67.86% (304/448) vs. 59.07% (1 843/3 120), hospitalization cost (ten thousand yuan): 6.7 (3.0, 16.9) vs. 3.7 (1.8, 8.1)], the ratio of diabetes mellitus was significantly lower than that of survival group [4.91% (22/448) vs. 10.45% (326/3 120)], the length of hospitalization was shorter than that of survival group [days: 10.0 (3.0, 19.0) vs. 13.0 (8.0, 24.0)], the differences were statistically significant (all P < 0.01). Multivariate Logistic regression analysis showed that male [odds ratio ( OR) = 0.75, 95% confidence interval (95% CI) was 0.59-0.96], elder ( OR = 1.04, 95% CI was 1.03-1.05) and diabetes ( OR = 0.32, 95% CI was 0.19-0.54) were independent risk factors for in-hospital death in patients with sepsis (all P < 0.05). Conclusions:Sepsis is a heavy burden in Southwest China, especially for ICU, with high mortality, high hospitalization costs, and heavy economic burden on patients and society. Male, elder and diabetes were independent risk factors for in-hospital death of sepsis patients.
4.Distribution characteristics of traditional Chinese medicine syndromes in 4 367 adult influenza patients: a Meta-analysis
Siyuan LEI ; Xuanlin LI ; Zhenzhen FENG ; Liu CHUN ; Jiansheng LI
Chinese Critical Care Medicine 2023;35(1):23-27
Objective:To systematically evaluate the distribution characteristics of traditional Chinese medicine (TCM) syndromes in adult influenza patients and to provide a basis for the TCM syndrome differentiation of influenza.Methods:The CNKI, CBM, Wanfang, VIP, PubMed, Embase, Cochrane Library databases were searched to collect cross -sectional studies on the distribution pattern of TCM syndromes in adult patients with influenza. The risk of bias assessment tool for cross -sectional studies developed by the Joanna Briggs Institute (JBI) evidence -based health care center was used to evaluate the literature quality, and the Stata 15.1 software was used to conduct a Meta -analysis of the pooled effect sizes of the included studies. Results:A total of 11 studies with 4 367 influenza patients were included. Quality assessment results of JBI showed that the risk bias was higher in the sample size calculation, and the description of sampling modalities and response rate was unclear. There were 17 influenza syndromes after specification, and a single group rate Meta -analysis was performed of the syndromes with ≥ 50 incident cases showed that there were 9 syndromes with an incidence ≥ 10% and statistical significance, the top 5 syndromes were syndrome of wind and heat invading the defense [ n = 1 583, RATE = 34.3%, 95% confidence interval (95% CI) was 22.2%-46.3%], syndrome of exterior cold and interior heat ( n = 1 122, RATE = 36.1%, 95% CI was 21.2%-51.1%), syndrome of wind -cold fettering the exterior ( n = 860, RATE = 19.4%, 95% CI was 10.7%-28.0%), syndrome of heat and toxin in the lung ( n = 217, RATE = 17.1%, 95% CI was 9.1%-25.0%), and syndrome of disease involving both defense phase and qi phase ( n = 184, RATE = 38.8%, 95% CI was 14.2%-63.5%). The results of the subgroup analysis in different geographical regions showed that the frequency of distribution of syndrome of wind and heat invading the defense and heat and toxin in the lung was higher in the South (RATE: 36.5%, 18.6%) than in the North (RATE: 30.9%, 15.4%), and the frequency of distribution of syndrome of wind -cold fettering the exterior and exterior cold and interior heat in the North (RATE: 23.8%, 40.1%) was higher than that in the South (RATE: 15.7%, 32.3%). Conclusions:There are 9 common TCM syndromes of influenza, including wind and heat invading the defense syndrome, exterior cold and interior heat syndrome, wind -cold fettering the exterior syndrome, heat and toxin in the lung syndrome, disease involving both defense phase and qi phase syndrome, wind and heat complicated by dampnessinvading the surface syndrome, wind and cold complicated by dampnessinvading the surface syndrome, defense phase syndrome and dampness and heatinvading the surface syndrome, which can provide a reference for the TCM syndrome differentiation and treatment of influenza.
5.Exploration and Construction of Dynamic Prediction Model in the Pre-Rheumatoid Arthritis State
Xuanlin LI ; Liaoyao WANG ; Lin HUANG ; Mingzhi ZHENG ; Chengping WEN
Journal of Traditional Chinese Medicine 2023;64(24):2516-2521
Pre-rheumatoid arthritis (Pre-RA) is the asymptomatic state of rheumatoid arthritis (RA), and its progression showed complexity, dynamics and significant individual differences. The dynamic prediction model is valuable in identifying individual risks and taking timely preventive and control measures. It is believed that applying the dynamic prediction model to traditional Chinese medicine (TCM) clinical studies of Pre-RA is expected to predict the critical state of Pre-RA to RA, reveal the evolution of Pre-RA, reflect the external authenticity of the TCM clinical studies, and complement the clinical efficacy evaluation method. Accordingly, it is envisioned to construct a dynamic prediction model for Pre-RA progression based on TCM clinical trial data through the dynamic prediction model algorithm, and to apply long-term follow-up cohort data for external validation, thereby providing a basis for scientific warning and clinical decision-making on the evolution of Pre-RA.
6.Attitudes and experiences of medical staff regarding the presence of family members during the administration of CPR: a Meta synthesis
Yaru HAO ; Luo FAN ; Dan LI ; Wei ZHU ; Xuanlin REN ; Yue GUO
Chinese Journal of Practical Nursing 2023;39(6):475-481
Objective:To systematically integrate the attitudes and experiences of medical staffs towards the family presence during resuscitation and provide a reference for the development of family presence during resuscitation clinical practice in China.Methods:To search PubMed, Embase, Web of Science, The Cochrane Library, CINAHL, CNKI, CBM and Wanfang database for qualitative studies on medical staff's attitudes and experiences of family presence during resuscitation since its inception to August 2022. The quality of the literature was evaluated using the Australian JBI Centre for Evidence-Based Health Care (2017) quality assessment criteria for qualitative studies, which were integrated using a pooled integration approach.Results:A total of 12 papers were included to distil the findings of 74 studies, which were summarized to form 10 new categories and 4 consolidated findings including medical staffs′ attitudes towards and reasons for family presence during resuscitation, the impact of family presence during resuscitation on the resuscitation team, the impact of family presence during resuscitation on patients and families, and the real-life dilemmas and recommendations for medical staffs to allow family presence during resuscitation.Conclusions:We should pay attention to the difficulties and needs of family presence during resuscitation by medical staff, take into account the medical context in China, and improve the humanistic care system in our hospitals by considering hospital management, clinical practice, and the demands of patients and their families, in order to improve the accessibility of family presence during resuscitation by the medical staff.
7.The current situation of knowledge, attitude and practice about target temperature management in patients with severe traumatic brain injury among intensive care unit nurses and its factors analysis
Wei ZHU ; Luo FAN ; Dan LI ; Yaru HAO ; Xuanlin REN ; Wenjing MU
Chinese Journal of Practical Nursing 2023;39(22):1739-1746
Objective:To understand the current situation of knowledge, attitude and practice about target temperature management (TTM) in patients with severe traumatic brain injury (STBI) among intensive care unit ICU nurses and analyze the influencing factors, so as to provide a reference for conducting ICU nurses′ TTM training for patients with STBI.Methods:Applying the method of cross-sectional study, from November to December 2022, a stratified whole-group sampling method was used, stratified by first-, second-, and third-level hospitals, and a self-designed questionnaire on the current status of ICU nurses′TTM for patients with STBI was used to investigate the current status of knowledge, attitude, and practice of neurosurgical ICU, emergency ICU, and comprehensive ICU nurses in 22 second- and third-level hospitals in 11 cities in Gansu Province, and multiple linear regression analysis was used to analyze the factors influencing ICU nurses′ knowledge, attitude, and practice scores.Results:A total of 543 valid questionnaires were returned, and the scores of ICU nurses on the TTM total score, knowledge, attitude and practice dimensions of STBI patients were (76.75 ± 10.42), (7.38 ± 2.74), (39.57 ± 4.87), (29.80 ± 7.18) points respectively. The results of multiple linear regression analysis showed that the factor influencing ICU nurses′ scores on the TTM knowledge dimension for STBI patients was having attended TTM-related training ( t = 2.16, P<0.05); the factors influencing ICU nurses′ scores on the TTM attitude dimension for STBI patients were college, bachelor′s degree and the position of nurse practitioner ( t = 2.65, 2.91, 2.14, all P<0.05); and the factors influencing ICU nurses′ scores on the TTM practice dimension for STBI patients were the age group of 36 to 45 years old, the department having TTM-related criteria and having knowledge of TTM-related guidelines ( t = -2.46, 2.64, 3.85, all P<0.05). Conclusions:ICU nurses have a more positive attitude toward TTM in patients with STBI, but the level of knowledge and practice needs to be improved. Managers should conduct relevant training according to the current situation and influencing factors to improve ICU nurses′ knowledge and practice of TTM in patients with STBI, ensuring the effectiveness and safety of TTM.
8.Infix plus cannulated screws for the treatment of pelvic injuries caused by pubic symphysis separation in middle-aged and elderly patients
Tonglin CHEN ; Xuanlin ZHENG ; Shuolei WANG ; Liangyuan WEN ; Xianjun LV ; Limin CHANG ; Tao LI ; Bao ZHU ; Haili ZHAO
Chinese Journal of Geriatrics 2022;41(7):780-784
Objective:To investigate the clinical effect of Infix combined with hollow screws for the treatment of pelvic injuries with pubic symphysis separation in middle-aged and elderly patients.Methods:Data of 8 middle-aged and elderly patients with pelvic injuries due to pubic symphysis separation undergone treatment from January 2017 to December 2020 were retrospectively analyzed.Results:The average operating time of 8 patients was (46.0±6.2)min(range: 40-62min); the average intraoperative blood loss was (32.0±5.6)ml(range: 25-50 ml); the average length of incisions at the iliac screw was(2.6±0.4)cm(range: 2.0-3.5 cm); the average length of incisions at the hollow screw was (1.1±0.3)cm(range: 0.8-1.5 cm); and the average times of fluoroscopy were (36.0±6.0)times(range: 28-52 times). Postoperative X-ray and CT examinations showed that the reduction of the pubic symphysis was good, the inserted iliac screws and cannulated screws were positioned accurately, and the incision healed well.Based on Matta's criteria, postoperative radiological outcomes were evaluated, with 7 cases rated as excellent and 1 as good, giving an excellent to good rate of 100%(8/8). The average followed up time for all 8 patients was (15.0±4.2)months(range: 6-24 months). Pelvic X-ray and CT examinations at the last follow-up showed that the fractures healed well and the pubic symphysis reduction did not fail.Infix and cannulated screws in the pubic symphysis were removed 10-12 weeks after surgery[average: (10.5±0.5)weeks]. According to the Majeed Pelvic Score, 5 cases were rated as excellent, 2 cases as good and 1 as fair, with an excellent to good rate of 87.5%(7/8). One patient had symptoms related to the lateral femoral cutaneous nerve that disappeared after 3 months.One patient developed deep venous thrombosis after surgery, and the filter was placed and removed 10 weeks later.Conclusions:Using Infix plus cannulated screws for the treatment of pelvic injuries in middle-aged and elderly patients with pubic symphysis separation has the advantages of limited trauma and intraoperative blood loss, good fixation and few complications.
9.Combined lumbar pelvic fixator for treatment of unstable vertical fracture and dislocation of old posterior pelvic ring
Tonglin CHEN ; Shuolei WANG ; Caili SUN ; Hongtao BAI ; Limin CHANG ; Xianjun LYU ; Tao LI ; Bao ZHU ; Yuanyuan LI ; Xuanlin ZHENG ; Weidou JIA
Chinese Journal of Orthopaedics 2021;41(20):1493-1499
Objective:To investigate the clinical effect of using combined lumbar pelvis fixation device in the treatment of old vertical unstable fracture dislocation of posterior pelvic ring.Methods:Data of 7 patients with old vertical unstable fracture dislocation of posterior pelvic ring admitted and followed up from January 2017 to April 2020 were retrospectively analyzed, including 4 males and 3 females with an average age of 42.4 years old (range, 22-73 years old). There were 3 cases of traffic injury, 3 cases of falling injury and 1 case of tumble injury. According to Tile classification for pelvic fractures, there were 5 cases of type C1, 1 case of type C2 and 1 case of type C3. The average time from fracture to surgery was 5.4 weeks (range, 3-10 weeks). Among the 7 patients, 4 patients' posterior ring fractures were fixed by combined lumbar pelvic triangle fixation, and 3 patients' posterior ring fracture were fixed by combined lumbar pelvic fixation. 4 patients' anterior ring injury were not treated, 2 patients' anterior ring injury were treated by closed cannulated screw and internal fixation, and 1 patient's anterior ring injury was fixed by INFIX and cannulated screw. Every patient's operating time, intraoperative blood loss, length of incision and times of X-ray fluoroscopy were recorded. Pelvic X-ray and CT scan were taken postoperatively to observe the condition of reduction and screw position. Postoperative fracture reduction quality was assessed by Matta radiological criteria and Majeed criteria was used at the final follow-ups to evaluate the degree of functional recovery after pelvic fracture.Results:The average operating time of 7 patients was 143 min (range, 96-205 min); the intraoperative average blood loss was 579 ml (range, 300-1 650 ml); the average length of incisions was 12.9 cm (range, 9-15 cm) and the average time of X-ray fluoroscopy was 27 times (range, 15-52 times). Postoperative X-ray and CT scan showed that the displacements of the posterior rings were reset well and all the hollow screws were located accurately and firmly. Postoperative radiation quality was evaluated according to Matta radiological criteria, and there were 4 cases of excellent, 2 cases of good and 1 case of fair, with an excellent and good rate of 85.7% (6/7). Seven patients had good fracture union. The average followed up time for all 7 patients was 12 months (range, 6-16 months). At the last follow-up, imaging examination showed good reduction of the sacroiliac joint, and the reduction of anterior and posterior rings were not lost. The healing time was 14.2 weeks (range, 12-20 weeks). Majeed score: postoperative 4.90±6.64 points (range, 48-58 points), postoperative 3 months 71.40±7.32 points (range, 67-75 points), postoperative 6 months 84.90±8.14 points (range, 68-96 points), the difference was statistically significant ( F=0.614, P=0.004). Majeed score 6 months after operation showed that 5 cases were excellent, 1 case was good and 1 case was fair, and the excellent and good rate was 85.7% (6/7). Conclusion:Using combined lumbar pelvis fixation device in the treatment of old vertical unstable fracture dislocation of posterior pelvic ring has good reduction quality, high fixed strength and good postoperative effect.
10.Clinical application value of blastocysts derived from poor-quality embryos after day 3 transplantation and frozen
Li LIU ; Xiaomin CAO ; Xuanlin ZHANG ; Jianyong DI ; Yuanyuan WANG ; Fengqin XU
Chinese Journal of Reproduction and Contraception 2021;41(4):313-319
Objective:To evaluate the clinical value of blastocysts derived from poor-quality embryos after day 3 (D3) transplantation and frozen, to investigate the best embryo strategies of frozen-thawed blastocysts.Methods:A retrospective cohort study was conducted on 362 frozen-thawed blastocyst transfer cycles were retrospectively analyzed in the Department of Reproductive Medicine, Tianjin First Central Hospital from July 2015 to March 2020. According to the days of culture, they were divided into day 5 (D5) and day 6 (D6) blastocyst transplantation group; according to the number of embryos transferred, they were divided into single blastocyst transplantation group and double blastocyst transplantation group; according to the embryo quality, single blastocyst transplantation group was divided into single high-quality embryo group and single poor-quality embryo group. The double blastocyst transplantation group was divided into double high-quality blastocyst group, a high-quality embryo matching a poor-quality blastocyst transplantation group and the double poor-quality blastocyst group. Clinical pregnancy rate, implantation rate and multiple pregnancy rate were compared in each group.Results:The clinical pregnancy rate and the implantation rate of D5 blastocyst transplantation group in thawing cycles were higher than those of D6 blastocyst transplantation group [62.96% (102/162) vs. 42.50%(85/200), 53.98% (122/226) vs. 35.86% (104/290)](all P<0.001), and there was no statistically significant difference of early abortion rate and multiple pregnancy rate between the D5 and D6 groups ( P>0.05). There was no statistically significant difference in the clinical pregnancy rate and the early abortion rate of D5 single blastocyst groups and double blastocyst pregnancy ( P>0.05), the implantation rate of single blastocyst group was higher than that of the double blastocyst group [62.24% (61/98) vs. 47.66% (61/128)] while the multiple pregnancy rate of single blastocyst group was lower than that of the double blastocyst group [3.28% (2/61) vs. 46.34% (19/41)] ( P=0.029, P<0.001). The clinical pregnancy rate and the multiple pregnancy rate of D6 single blastocyst group were lower than those of D6 double blastocyst pregnancy group [35.45% (39/110) vs. 51.11% (46/90), 5.13% (2/39) vs. 26.09% (12/46)] ( P=0.026, P=0.009), there were no statistically significant differences in implantation rate and early abortion rate (all P>0.05). There were no statistically significant differences in clinical pregnancy rate, implantation rate, early abortion rate and multiple pregnancy rate between single high-quality embryo and poor-quality embryo group in D5 and D6 single blastocyst transplantation group (all P>0.05). There were no statistically significant differences in clinical pregnancy rate, implantation rate, early abortion rate, and multiple pregnancy rate of the double high-quality blastocyst transplantation group, a high-quality embryo matching a poor-quality blastocyst transplantation group and the double poor-quality blastocyst group in D5 ( P>0.05). The implantation rate of D6 double poor-quality embryo group [26.67% (24/90)] was lower than that of the double high-quality embryo group [47.62% (20/42)] and a high-quality embryo matching a poor-quality embryo group [43.75% (7/16)]( P=0.029), while there were no statistically significant differences in clinical pregnancy rate, early abortion rate, and multiple pregnancy rate (all P>0.05). Conclusion:After the high-quality D3 embryo transfer and freezing, the remaining poor-quality embryos can be cultured to form blastocyst, better clinical pregnancy rate was obtained for transfer the frozen-thawed blastocysts, it increases the value of embryos and reduces the cost of treatment. The quality of D5 blastocyst is better than that of D6 blastocyst. The single blastocyst transplantation of D5 is preferred to reduce the rate of multiple pregnancy without affecting the clinical pregnancy rate.

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