Objective:To investigate the impact and clinical value of preoperative intra-aortic balloon pump(IABP)placement on the occurrence of postoperative atrial fibrillation(POAF)in elderly high-risk patients with coronary artery disease undergoing off-pump coronary artery bypass grafting(CABG).Methods:A retrospective cohort study was conducted, selecting 128 elderly(age≥60 years)patients with coronary artery disease who underwent isolated off-pump CABG and met high-risk criteria(≥2 high-risk factors)at Beijing Tongren Hospital.According to the occurrence of POAF, patients were divided into the POAF group(38 cases)and the non-POAF group(90 cases). Preoperative baseline data, preoperative IABP usage, intraoperative and postoperative indicators were collected and compared between the two groups.Univariate analysis was used to screen for differential variables, and multivariate logistic regression analysis was performed to identify the independent risk factors for POAF, focusing on the role and impact of preoperative IABP placement on POAF occurrence.Results:Among the 128 patients included, the incidence of POAF in patients with preoperative IABP placement was lower than that in patients without preoperative IABP placement[12.12%(4/33) vs.35.79%(34/95), χ2=6.512, P=0.011]; the preoperative IABP usage rate in the POAF group was significantly lower than that in the non-POAF group[10.53%(4/38) vs.32.22%(29/90), χ2=5.488, P=0.019]; the proportion of patients with preoperative left ventricular ejection fraction(LVEF)<40% in the POAF group was significantly higher than that in the non-POAF group[23.68%(9/38) vs.10.00%(9/90), χ2=4.140, P=0.042]; and the preoperative creatinine level in the POAF group was also significantly higher than that in the non-POAF group[(90.62±29.45)μmol/L vs.(81.31±20.18)μmol/L, t=2.066, P=0.041]. Multivariate logistic regression analysis showed that preoperative LVEF<40% was an independent risk factor for POAF occurrence( OR=11.862, 95% CI: 1.083-129.875, P=0.043), while preoperative IABP placement was an independent protective factor for POAF occurrence( OR=0.095, 95% CI: 0.016~0.583, P=0.011). The comparison of intraoperative and postoperative indicators between the two groups showed that multiple indicators in the POAF group were significantly worse than those in the non-POAF group.In terms of intraoperative indicators, the mean graft blood flow(mGF)of the graft vessels in the POAF group was lower[(18.25±8.84)ml/min vs.(21.24±7.13)ml/min, t=2.015, P=0.046], while the pulsatility index(PI)was higher(2.64±1.36 vs.2.18±1.07, t=2.045, P=0.043). In terms of postoperative laboratory indicators, the level of cardiac troponin I(cTnI)on the first postoperative day in the POAF group[(15.69±11.32)μg/L vs.(11.46±10.07)μg/L, t=2.092, P=0.038], the highest postoperative creatinine level[(128.23±74.29)μmol/L vs.(96.18±48.32)μmol/L, t=2.897, P=0.004], and the highest blood lactic acid level within 24 hours[(1.78±0.53)mmol/L vs.(1.54±0.62)mmol/L, t=2.085, P=0.039]were all significantly higher.In terms of postoperative recovery indicators, the duration of vasoactive drug use[(46.41±32.08)h vs.(36.21±22.39)h, t=2.058, P=0.042], mechanical ventilation time[(16.72±11.64)h vs.(12.19±9.68)h, t=2.275, P=0.025], and intensive care unit(ICU)stay time[(73.48±60.20)h vs.(54.89±39.29)h, t=2.070, P=0.040]in the POAF group were all significantly longer.The LVEF before discharge in the POAF group was also significantly lower than that in the non-POAF group[(43.08±16.24)% vs.(48.49±13.08)%, t=1.986, P=0.049]. Conclusions:Preoperative LVEF<40% is an independent risk factor for POAF occurrence after off-pump CABG in elderly high-risk patients with coronary artery disease, and preoperative prophylactic IABP placement can significantly reduce the occurrence of POAF in this population.

Objective:To investigate the impact and clinical value of preoperative intra-aortic balloon pump(IABP)placement on the occurrence of postoperative atrial fibrillation(POAF)in elderly high-risk patients with coronary artery disease undergoing off-pump coronary artery bypass grafting(CABG).Methods:A retrospective cohort study was conducted, selecting 128 elderly(age≥60 years)patients with coronary artery disease who underwent isolated off-pump CABG and met high-risk criteria(≥2 high-risk factors)at Beijing Tongren Hospital.According to the occurrence of POAF, patients were divided into the POAF group(38 cases)and the non-POAF group(90 cases). Preoperative baseline data, preoperative IABP usage, intraoperative and postoperative indicators were collected and compared between the two groups.Univariate analysis was used to screen for differential variables, and multivariate logistic regression analysis was performed to identify the independent risk factors for POAF, focusing on the role and impact of preoperative IABP placement on POAF occurrence.Results:Among the 128 patients included, the incidence of POAF in patients with preoperative IABP placement was lower than that in patients without preoperative IABP placement[12.12%(4/33) vs.35.79%(34/95), χ2=6.512, P=0.011]; the preoperative IABP usage rate in the POAF group was significantly lower than that in the non-POAF group[10.53%(4/38) vs.32.22%(29/90), χ2=5.488, P=0.019]; the proportion of patients with preoperative left ventricular ejection fraction(LVEF)<40% in the POAF group was significantly higher than that in the non-POAF group[23.68%(9/38) vs.10.00%(9/90), χ2=4.140, P=0.042]; and the preoperative creatinine level in the POAF group was also significantly higher than that in the non-POAF group[(90.62±29.45)μmol/L vs.(81.31±20.18)μmol/L, t=2.066, P=0.041]. Multivariate logistic regression analysis showed that preoperative LVEF<40% was an independent risk factor for POAF occurrence( OR=11.862, 95% CI: 1.083-129.875, P=0.043), while preoperative IABP placement was an independent protective factor for POAF occurrence( OR=0.095, 95% CI: 0.016~0.583, P=0.011). The comparison of intraoperative and postoperative indicators between the two groups showed that multiple indicators in the POAF group were significantly worse than those in the non-POAF group.In terms of intraoperative indicators, the mean graft blood flow(mGF)of the graft vessels in the POAF group was lower[(18.25±8.84)ml/min vs.(21.24±7.13)ml/min, t=2.015, P=0.046], while the pulsatility index(PI)was higher(2.64±1.36 vs.2.18±1.07, t=2.045, P=0.043). In terms of postoperative laboratory indicators, the level of cardiac troponin I(cTnI)on the first postoperative day in the POAF group[(15.69±11.32)μg/L vs.(11.46±10.07)μg/L, t=2.092, P=0.038], the highest postoperative creatinine level[(128.23±74.29)μmol/L vs.(96.18±48.32)μmol/L, t=2.897, P=0.004], and the highest blood lactic acid level within 24 hours[(1.78±0.53)mmol/L vs.(1.54±0.62)mmol/L, t=2.085, P=0.039]were all significantly higher.In terms of postoperative recovery indicators, the duration of vasoactive drug use[(46.41±32.08)h vs.(36.21±22.39)h, t=2.058, P=0.042], mechanical ventilation time[(16.72±11.64)h vs.(12.19±9.68)h, t=2.275, P=0.025], and intensive care unit(ICU)stay time[(73.48±60.20)h vs.(54.89±39.29)h, t=2.070, P=0.040]in the POAF group were all significantly longer.The LVEF before discharge in the POAF group was also significantly lower than that in the non-POAF group[(43.08±16.24)% vs.(48.49±13.08)%, t=1.986, P=0.049]. Conclusions:Preoperative LVEF<40% is an independent risk factor for POAF occurrence after off-pump CABG in elderly high-risk patients with coronary artery disease, and preoperative prophylactic IABP placement can significantly reduce the occurrence of POAF in this population.

Objective:To analyze the application effects of case-based learning (CBL) + Seminar teaching method based on Toulmin model in the education and teaching of clinical medicine innovation class.Methods:A total of 60 students from the clinical medicine innovation class at The Second Affiliated Hospital of Guangzhou Medical University from September 2021 to September 2023 were selected as research objects. These students were divided into control group ( n=30) and research group ( n=30) according to different teaching programs. The traditional teaching method was adopted in the control group, and the CBL + Seminar teaching method based on Toulmin model was adopted in the research group. The two groups were compared in terms of clinical knowledge, clinical skill, and clinical case analysis scores; changes in clinical thinking ability after teaching; and satisfaction with the teaching process. SPSS 22.0 was used for t-test and chi-square test. Results:The research group significantly outperformed the control group in clinical knowledge [(89.59±3.46) points vs. (83.23±3.02) points], clinical skill [(88.87±3.23) points vs. (83.62±3.13) points], and clinical case analysis [(89.73±3.51) points vs. (82.62±3.19) points] ( t=7.58, 6.39, 8.21, P<0.001). The clinical thinking ability after teaching was significantly higher in the research group compared to the control group [(258.49±13.36) points vs. (242.56±13.02) points] ( t=4.67, P<0.001). The overall satisfaction rate of teaching was significantly higher in the research group compared to the control group (100.00% vs. 80.00%, χ2=4.63, P=0.031). Conclusions:The CBL + Seminar teaching method based on Toulmin model can effectively improve student learning performance and clinical thinking ability, demonstrating a promising application value in the education and teaching of clinical medicine innovation class.

Objective:To analyze the application effects of case-based learning (CBL) + Seminar teaching method based on Toulmin model in the education and teaching of clinical medicine innovation class.Methods:A total of 60 students from the clinical medicine innovation class at The Second Affiliated Hospital of Guangzhou Medical University from September 2021 to September 2023 were selected as research objects. These students were divided into control group ( n=30) and research group ( n=30) according to different teaching programs. The traditional teaching method was adopted in the control group, and the CBL + Seminar teaching method based on Toulmin model was adopted in the research group. The two groups were compared in terms of clinical knowledge, clinical skill, and clinical case analysis scores; changes in clinical thinking ability after teaching; and satisfaction with the teaching process. SPSS 22.0 was used for t-test and chi-square test. Results:The research group significantly outperformed the control group in clinical knowledge [(89.59±3.46) points vs. (83.23±3.02) points], clinical skill [(88.87±3.23) points vs. (83.62±3.13) points], and clinical case analysis [(89.73±3.51) points vs. (82.62±3.19) points] ( t=7.58, 6.39, 8.21, P<0.001). The clinical thinking ability after teaching was significantly higher in the research group compared to the control group [(258.49±13.36) points vs. (242.56±13.02) points] ( t=4.67, P<0.001). The overall satisfaction rate of teaching was significantly higher in the research group compared to the control group (100.00% vs. 80.00%, χ2=4.63, P=0.031). Conclusions:The CBL + Seminar teaching method based on Toulmin model can effectively improve student learning performance and clinical thinking ability, demonstrating a promising application value in the education and teaching of clinical medicine innovation class.

Objective To explore the content and the psychometric properties of assessment tools used for evaluating functioning and adaptive behavior in school-age children with intellectual and developmental disabilities within educational settings. Methods The most used assessment tools included Vineland Adaptive Behavior Scales(VABS),Supports Intensity Scale for Children(SIS-C),Strengths and Difficulties Questionnaire(SDQ)and Repetitive Behavior Scale-Revised(RBS-R),for assessing functioning and adaptive behavior children with intellectual and developmental disabili-ties.Employing the framework and methods of the International Classification of Functioning,Disability,and Health(ICF),this research encoded and categorized the assessment dimensions and items of the four tools,and explored their psychometric properties. Results VABS's assessment content was solely focused on activities and participation,including speaking(d330),con-versation(d350),toileting(d530),eating(d550),drinking(d560),basic interpersonal interactions(d710),com-plex interpersonal interactions(d720),changing and maintaining body positions(d410-d429),carrying,moving and handing objects(d430-d449),and walking and moving(d450-d469).SIS-C assessed activities and participa-tion,and environmental factors,including washing oneself(d510),caring for body parts(d520),community life(d910),using transportation(d470),school education(d820),basic learning(d130-d159),looking after one's health(d570),basic interpersonal interactions(d710),and products and technology for education(e130).SDQ fo-cused on body functions,and activities and participation,including emotional functions(b152),global psychoso-cial functions(b122),attention functions(b140),and basic interpersonal interactions(d710).RBS-R focused on body functions,and activities and participation,including involuntary movement reaction functions(b755),invol-untary movement functions(b765),looking after one's health(d570),energy and drive functions(b130),under-taking a single task(d210),carrying out daily routine(d230),attention functions(b140),and handling stress and other psychological demands(d240).VABS was characterized by good specificity and excellent sensitivity.SIS-C demonstrated very good internal consistency,reliability and validity.SDQ was good in internal consistency,with excellent credibility and validity.RBS-R showed good internal consistency,reliability and validity. Conclusion SDQ and RBS-R cover both body functions,and activities and participation,SIS-C covers activity and par-ticipation,and environmental factors,while VABS solely assesses activities and participation.In terms of body functions,the assessment items primarily focus on mental functions(b130-b189)and movement functions(b750-b799).For activities and participation,the tools assess content across eight domains of functioning.Regarding en-vironmental factors,the assessment content mainly includes products and technology for education(e130),as well as design,construction and building products and technology of buildings for public use(e150).VABS,SIS-C,SDQ,and RBS-R are all norm-referenced measures,with moderate to excellent internal consistency,and good to excellent reliability and validity.

Esketamine is a spin isomer of ketamine,which has the triple effect of sedation,analge-sia and amnesia,and is superior to ablative ketamine in terms of efficacy,controllability.It has been widely used in anesthesia,emergency and critical care in Europe and America,and is mostly used for sedation,analgesia and antidepressant in China.Esketamine is used in cardiac surgery to maintain stable hemodynam-ics,reduce the secretion of inflammatory factors and relieve postoperative pain.Its sympathomimetic effect allows it to be used for the induction of anesthesia in patients with hemodynamic instability and acute heart attack.This paper reviews the recent advance in the clinical value and limitations of esketamine in the perio-perative period of cardiovascular surgery and provides a reference for clinicians to use esketamine in the perioperative period of cardiovascular surgery.

The incidence of osteoporotic thoracolumbar vertebral fracture (OTLVF) in the elderly is gradually increasing. The kyphotic deformity caused by various factors has become an important characteristic of OTLVF and has received increasing attention. Its clinical manifestations include pain, delayed nerve damage, sagittal imbalance, etc. Currently, the definition and diagnosis of OTLVF with kyphotic deformity in the elderly are still unclear. Although there are many treatment options, they are controversial. Existing guidelines or consensuses pay little attention to this type of fracture with kyphotic deformity. To this end, the Lumbar Education Working Group of the Spine Branch of the Chinese Medicine Education Association and Editorial Committee of Chinese Journal of Trauma organized the experts in the relevant fields to jointly develop Clinical guidelines for the diagnosis and treatment of osteoporotic thoracolumbar vertebral fractures with kyphotic deformity in the elderly ( version 2024), based on evidence-based medical advancements and the principles of scientificity, practicality, and advanced nature, which provided 18 recommendations to standardize the clinical diagnosis and treatment.

Objective:To evaluate the effect of s-ketamine on perioperative myocardial injury in patients undergoing liver transplantation.Methods:This was a prospective randomized controlled study. Sixty American Society of Anesthesiologists Physical Status classification Ⅲ or Ⅳ patients, aged 18-64 yr, with New York Heart Association classⅠ-Ⅲ, undergoing elective liver transplantation with general anesthesia in our hospital from May to October 2023, were divided into 2 groups ( n=30 each) using a random number table method: s-ketamine group (group S) and control group (group C). In group S, s-ketamine was intravenously injected at a dose of 0.5 mg/kg after induction of anesthesia, followed by an infusion of 0.5 mg·kg -1·h -1 until the end of surgery. The equal volume of normal saline was given instead in group C. Central venous blood samples were collected after induction of anesthesia (T 0), at 30 min of anhepatic phase (T 1), 30 min of neopepatic phase (T 2), abdominal closure (T 3), 24 h after operation (T 4) and 72 h after operation (T 5) for determination of the concentrations of serum high-sensitivity cardiac troponin I, creatine kinase-MB isoenzyme, N-terminal pro-B-type natriuretic peptide, tumor necrosis factor-α, interleukin-6 (IL-6), IL-10 and high-mobility group protein B1 by enzyme-linked immunosorbent assay. The occurrence of adverse cardiac events during surgery and within 24 h after surgery, postoperative mechanical ventilation time, time of intensive care unit stay, and postoperative length of hospital stay were recorded. Results:Compared with group C, the concentrations of serum high-sensitivity cardiac troponin I, creatine kinase-MB isoenzyme, N-terminal pro-B-type natriuretic peptide, tumor necrosis factor-α and IL-6 at T 2-5 and high-mobility group protein B1 at T 2-4 were significantly decreased, the concentrations of serum IL-10 were increased at T 2-5, the incidence of myocardial ischemia was decreased, the mechanical ventilation time was shortened ( P<0.05), and no significant change was found in the time of intensive care unit stay and postoperative length of hospital stay in S group ( P>0.05). Conclusions:Intraoperative usage of s-ketamine can inhibit the inflammatory responses and reduce perioperative myocardial injury in the patients undergoing liver transplantation.

Objective:To explore the effect of esketamine on inflammatory cytokines and myocardial injury markers in children undergoing living-donor liver transplantation (LT).Methods:Considering the inclusion criteria, 50 children with biliary atresia were selected for living donor LT. They were equally randomized into two groups of control (C) and esketamine (E) (25 cases each). Esketamine 0.5 mg/kg was administered to group E during induction and continued at a dose of 0.5 mg·kg –1·h -1 after an induction of anesthesia. Group C provided the same dose of 0.9% sodium chloride injection during induction and then continued to pumping until the end of the procedure. Basic profiles of two groups were recorded. Hemodynamic parameters, such as heart rate (HR), mean arterial pressure (MAP) and central venous pressure (CVP), were monitored at 5 min of anesthesia induction (T 0), 30 min of anhepatic phase (T 1), immediately after repercussion (T 2), 30 min of neohepatic phase (T 3) and end of surgery (T 4) in both groups. Central venous blood samples were collected at T 0, T 1, T 3 and T 4. Serum levels of cardiac troponin I (cTnI), creatine kinase isoenzyme-MB (CK-MB) ,tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) were measured. The incidence of adverse cardiac events, postoperative mechanical ventilation time, ICU stay and hospitalization length were compared. Results:As compared with T 0, mean arterial pressure (MAP) at T 2 declined markedly in group E [(48.6±12.7) mmHg (1 mmHg=0.133 kPa) vs (55.6±10.7) mmHg, P<0.001] and C [(39.3±8.0) mmHg vs (53.2±9.4) mmHg, P<0.001 ] ;As compared with T 0, the TNF-α and IL-6 spiked at T 3 in group C [169.0 (207.1) ng/L vs 43.8 (26.4) ng/L, (132.63±51.75) ng/L vs (51.79±17.83) ng/L, P<0.001] and E [78.5 (138.8) ng/L vs 43.8 (26.4) ng/L, (87.44±32.17) ng/L vs (51.79±17.83) ng/L, P<0.001 ] ; In group C, the concentration of myocardial injury markers CK-MB and cTnI rose at T 3/T 4 compared with T 0[T 3 vs T 0: 5.7 (5.4) μg/L vs 4.0 (3.5) μg/L, 0.09 (0.08) μg/L vs 0.02 (0.02) μg/L; T 4 vs T 0: 5.3 (5.0) μg/L vs 4.0 (3.5) μg/L, 0.07 (0.08) μg/L vs 0.02 (0.02) μg/L, P<0.001 ]. In group E, the levels of CK-MB and cTnI were higher at T 3/T 4 than those at T 0[T 3 vs T 0: 7.0 (5.0) μg/L vs 4.6 (2.1) μg/L, 0.06 (0.09) μg/L vs 0.03 (0.04) μg/L; T 4 vs T 0: 5.4 (4.9) μg/L vs 4.6 (2.1) μg/L, 0.03 (0.06) μg/L vs 0.03 (0.04) μg/L; P<0.001]. Compared with group C, the MAP of E rose at T 1/T 2/T 3 [(58.8±10.3) mmHg vs (53.3±8.6) mmHg, P=0.048; (48.6±12.7) mmHg vs (39.3± 8.0) mmHg, P=0.003; (55.8±7.4) mmHg vs (51.5±7.3) mmHg, P=0.044]. Compared with group C, TNF-α and IL-6 decreased in E at T 3/T 4[T 3: 78.5 (138.8) ng/L vs 169.0 (207.1) ng/L, P=0.010; (87.44±32.17) ng/L vs (132.63±51.75) ng/L, P=0.017. T 4: 62.3 (118.3) ng/L vs 141.3 (129.2) ng/L, P=0.001; (74.34±26.38) ng/L vs (100.59±30.40) ng/L, P=0.002]. Compared with group C, cTnI decreased in E at T 3/T 4[0.06 (0.09) μg/L vs 0.09 (0.08) μg/L, P=0.014; 0.03 (0.06) μg/L vs 0.07 (0.08) μg/L, P=0.003]. Compared with group C, the mechanical ventilation time in group E decreased [195 (120) min vs 315 (239) min, P<0.001]. Compared with group C, the incidence of severe hypotension [16%(4/25) vs 48% (12/25), P=0.015 ], bradycardia [12% (3/25) vs 36 % (9/25), P=0.047 ], myocardial ischemia [4 % (1 /25) vs 24 % (6/25), P=0.042 ] and premature ventricular contractions [0 vs 4 %(1/25), P=0.312 ] decreased in group E. Conclusion:Intraoperative dosing of esketamine may suppress inflammatory reactions and alleviate perioperative myocardial injury in children undergoing living-donor LT.

Objective:To investigate the heterogeneity of FLT3 mutations and the consequences of co-occurring mutations on the clinical features and prognosis of patients with acute myeloid leukemia(AML).Methods:We retrospectively analyzed the clinical characteristics of 80 patients with AML who carried FLT3 mutations,as detected by genetic testing,and were treated in The First Hospital of Lanzhou Uni-versity from October 2017 to March 2024.An analysis was performed to evaluate the impact of FLT3 mutation frequency,insertion length of base pairs,insertion site,and co-occurring mutations on survival outcomes.Results:The variant allele frequency(VAF)of FLT3-ITD muta-tions was correlated with leukocyte counts and lactate dehydrogenase levels in patients with de novo AML.There was an association between the insertion site and the length of the base-pair insertion.Patients with AML who also had a VAF of FLT3-ITD mutations greater than or equal to 0.38 exhibit reduced overall survival(OS),whereas the length of base pair insertion,insertion site,and number of muta-tions did not correlate with OS.Patients with non-classical FLT3 mutations demonstrated a significantly longer OS than did those with FLT3-ITD mutations.The co-occurrence of FLT3-ITD,NPM1,and DNMT3A mutations was associated with markedly reduced OS.The use of FLT3 inhibitors and allogeneic hematopoietic stem cell transplantation(allo-HSCT)can improve the prognosis of patients with FLT3-ITD mutations.Conclusions:FLT3 mutational heterogeneity correlates with the clinical characteristics and outcomes of patients with AML.Non-classical FLT3 and FLT3-TKD mutations are associated with superior prognosis.Patients with a VAF of 0.38 or higher have a poorer prognosis,but the use of FLT3 inhibitors can improve their prognosis.Patients with triple mutations have poor prognosis.