Objective To evaluate the clinical efficacy and safety of Compound Danshen Dripping Pills combined with Tirofiban in alleviating myocardial ischemia-reperfusion injury(MIRI)in patients with acute ST-segment elevation myocardial infarction(STEMI)after percutaneous coronary intervention(PCI).Methods Ninety-two patients with acute STEMI of qi stagnation and blood stasis syndrome who were admitted to the Chest Pain Center of Shunde Hospital,Guangzhou University of Chinese Medicine between March 2023 and October 2023 were equally randomized into a control group and a treatment group using a random number table,with 46 cases in each group.The control group received intracoronary loading dose of Tirofiban during PCI combined with postoperative intravenous micro-pump injection of Tirofiban,while the trial group additionally received Compound Danshen Dripping Pills orally,the treatment course lasted for 4 weeks.Before treatment or immediately after surgery and after 4 weeks of treatment,the two groups were observed in the changes in traditional Chinese medicine(TCM)syndrome scores,cardiac function parameters[including left ventricular ejection fraction(LVEF),cardiac output(CO),and left ventricular end-diastolic diameter(LVEDD)],and levels of inflammatory markers of C-reactive protein(CRP)and brain natriuretic peptide(BNP),as well as safety indicators such as liver and kidney function and coagulation parameters in both groups.The peak values of myocardial necrosis markers of creatine kinase-MB(CK-MB)and troponin I(cTnI)and other myocardial enzyme profiles between the two groups were compared.After treatment,the TCM syndrome efficacy of improvement,the therapeutic effect on improving ST-segment resolution(STR)of electrocardiogram,and the incidence of adverse cardiovascular events in both groups were assessed.Results(1)There were 3 patients dropping out during the trial,with a final total of 89 cases included in the efficacy analysis(44 cases in the control group and 45 cases in the trial group).(2)After 4 weeks of treatment,the total effective rate in the trial group was 95.56%(43/45)and that in the control group was 79.55%(35/44).Intergroup comparison by chi-square test showed that TCM syndrome efficacy in the trial group was significantly superior to that in the control group(P＜0.05).(3)After 4 weeks of treatment,the total effective rate for improving STR in the trial group was 93.33%(42/45)and that in the control group was 75.00%(33/44).Intergroup comparison(tested by chi-square test)demonstrated that the trial group had significantly stronger STR improvement efficacy than the control group(P＜0.05).(4)After 4 weeks of treatment,the serum levels of CRP and BNP in both groups were lower than those immediately after surgery(P＜0.05),and the trial group exhibited significantly greater reductions in both CRP and BNP levels than the control group(P＜0.01).(5)The peak values of myocardial necrosis markers of CK-MB and cTnI in the trial group were significantly lower than those in the control group,with statistically significant differences(P＜0.05).(6)After 4 weeks of treatment,the trial group showed significant improvements in LVEF and CO compared to immediate postoperative values(P＜0.05),while LVEDD demonstrated an improving trend without statistical significance(P＞0.05).The control group showed no significant improvements in LVEF,CO,or LVEDD(P＞0.05).The intergroup comparison revealed that the trial group had significantly better improvements in LVEF and CO than the control group(P＜0.05 or P＜0.01).(7)After 4 weeks of treatment,both groups showed reductions in the scores of chest pain,chest tightness,palpitations,emotional depression,hypochondriac distension,and dull complexion,as well as the total syndrome scores when compared to pretreatment values(P＜0.05),and the trial group presented significantly greater reductions than the control group(P＜0.05).(8)No statistically significant differences were shown in the parameters of liver/kidney function or coagulation between the two groups before and after treatment(P＞0.05).(9)The incidence of postoperative adverse cardiovascular events in the control group was 13.64%(6/44)and that in the trial group was 6.67%(3/45),and the intergroup comparison(tested by Fisher's exact test)showed no statistically significant difference(P＞0.05).Conclusion The combination therapy of Compound Danshen Dripping Pills and Tirofiban demonstrates significant efficacy in improving TCM syndromes,ST-segment elevation,myocardial necrosis markers,and cardiac function in STEMI patients after PCI,with good safety.

Objective:Surgical site infection (SSI) is the most common infectious complication after emergency abdominal surgery (EAS). To a large extent, most SSI can be prevented, but there are few relevant studies in China. This study mainly investigated the current situation of SSI occurrence after EAS in China, and further explored risk factors for SSI occurrence.Methods:Multi-center cross-sectional study was conducted. Clinical data of patients undergoing EAS in 33 hospitals across China between May 1, 2019 and June 7, 2019 were prospectively collected, including perioperative data and microbial culture results from infected incisions. The primary outcome was the incidence of SSI after EAS, while the secondary outcomes were postoperative hospital stay, ICU occupancy rate, length of ICU stay, hospitalization cost, and mortality within postoperative 30 days. Univariate and multivariate logistic regression models were used to analyze the risk factors of SSI after EAS.Results:A total of 660 EAS patients aged (47.9±18.3) years were enrolled in this study, including 56.5% of males (373/660). Forty-nine (7.4%) patients developed postoperative SSI. The main pathogen of SSI was Escherichia coli [culture positive rate was 32.7% (16/49)]. As compared to patients without SSI, those with SSI were more likely to be older (median 56 years vs. 46 years, U=19 973.5, P<0.001), male [71.4% (35/49) vs. 56.1% (343/611), χ 2=4.334, P=0.037] and diabetes [14.3% (7/49) vs. 5.1% (31/611), χ 2=5.498, P=0.015]; with-lower preoperative hemoglobin (median: 122.0 g/L vs. 143.5 g/L, U=11 471.5, P=0.006) and albumin (median: 35.5 g/L vs. 40.8 g/L, U=9452.0, P<0.001), with higher blood glucose (median: 6.9 mmol/L vs. 6.0 mmol/L, U=17 754.5, P<0.001); with intestinal obstruction [32.7% (16/49) vs. 9.2% (56/611), χ 2=25.749, P<0.001], with ASA score 3-4 [42.9% (21/49) vs. 13.9% (85/611), χ 2=25.563, P<0.001] and with high surgical risk [49.0% (24/49) vs. 7.0% (43/611), χ 2=105.301, P<0.001]. The main operative procedure resulting in SSI was laparotomy [81.6%(40/49) vs. 35.7%(218/611), χ 2=40.232, P<0.001]. Patients with SSI experienced significantly longer operation time (median: 150 minutes vs. 75 minutes, U=25 183.5, P<0.001). In terms of clinical outcome, higher ICU occupancy rate [51.0% (25/49) vs. 19.5% (119/611), χ 2=26.461, P<0.001], more hospitalization costs (median: 44 000 yuan vs. 15 000 yuan, U=24 660.0, P<0.001), longer postoperative hospital stay (median: 10 days vs. 5 days, U=23 100.0, P<0.001) and longer ICU occupancy time (median: 0 days vs. 0 days, U=19 541.5, P<0.001) were found in the SSI group. Multivariate logistic regression analysis showed that the elderly (OR=3.253, 95% CI: 1.178-8.985, P=0.023), colorectal surgery (OR=9.156, 95% CI: 3.655-22.937, P<0.001) and longer operation time (OR=15.912, 95% CI:6.858-36.916, P<0.001) were independent risk factors of SSI, while the laparoscopic surgery (OR=0.288, 95% CI: 0.119-0.694, P=0.006) was an independent protective factor for SSI. Conclusions:For patients undergoing EAS, attention should be paid to middle-aged and elderly patients and those of colorectal surgery. Laparoscopic surgery should be adopted when feasible and the operation time should be minimized, so as to reduce the incidence of SSI and to reduce the burden on patients and medical institutions.

Objective:Surgical site infection (SSI) is the most common infectious complication after emergency abdominal surgery (EAS). To a large extent, most SSI can be prevented, but there are few relevant studies in China. This study mainly investigated the current situation of SSI occurrence after EAS in China, and further explored risk factors for SSI occurrence.Methods:Multi-center cross-sectional study was conducted. Clinical data of patients undergoing EAS in 33 hospitals across China between May 1, 2019 and June 7, 2019 were prospectively collected, including perioperative data and microbial culture results from infected incisions. The primary outcome was the incidence of SSI after EAS, while the secondary outcomes were postoperative hospital stay, ICU occupancy rate, length of ICU stay, hospitalization cost, and mortality within postoperative 30 days. Univariate and multivariate logistic regression models were used to analyze the risk factors of SSI after EAS.Results:A total of 660 EAS patients aged (47.9±18.3) years were enrolled in this study, including 56.5% of males (373/660). Forty-nine (7.4%) patients developed postoperative SSI. The main pathogen of SSI was Escherichia coli [culture positive rate was 32.7% (16/49)]. As compared to patients without SSI, those with SSI were more likely to be older (median 56 years vs. 46 years, U=19 973.5, P<0.001), male [71.4% (35/49) vs. 56.1% (343/611), χ 2=4.334, P=0.037] and diabetes [14.3% (7/49) vs. 5.1% (31/611), χ 2=5.498, P=0.015]; with-lower preoperative hemoglobin (median: 122.0 g/L vs. 143.5 g/L, U=11 471.5, P=0.006) and albumin (median: 35.5 g/L vs. 40.8 g/L, U=9452.0, P<0.001), with higher blood glucose (median: 6.9 mmol/L vs. 6.0 mmol/L, U=17 754.5, P<0.001); with intestinal obstruction [32.7% (16/49) vs. 9.2% (56/611), χ 2=25.749, P<0.001], with ASA score 3-4 [42.9% (21/49) vs. 13.9% (85/611), χ 2=25.563, P<0.001] and with high surgical risk [49.0% (24/49) vs. 7.0% (43/611), χ 2=105.301, P<0.001]. The main operative procedure resulting in SSI was laparotomy [81.6%(40/49) vs. 35.7%(218/611), χ 2=40.232, P<0.001]. Patients with SSI experienced significantly longer operation time (median: 150 minutes vs. 75 minutes, U=25 183.5, P<0.001). In terms of clinical outcome, higher ICU occupancy rate [51.0% (25/49) vs. 19.5% (119/611), χ 2=26.461, P<0.001], more hospitalization costs (median: 44 000 yuan vs. 15 000 yuan, U=24 660.0, P<0.001), longer postoperative hospital stay (median: 10 days vs. 5 days, U=23 100.0, P<0.001) and longer ICU occupancy time (median: 0 days vs. 0 days, U=19 541.5, P<0.001) were found in the SSI group. Multivariate logistic regression analysis showed that the elderly (OR=3.253, 95% CI: 1.178-8.985, P=0.023), colorectal surgery (OR=9.156, 95% CI: 3.655-22.937, P<0.001) and longer operation time (OR=15.912, 95% CI:6.858-36.916, P<0.001) were independent risk factors of SSI, while the laparoscopic surgery (OR=0.288, 95% CI: 0.119-0.694, P=0.006) was an independent protective factor for SSI. Conclusions:For patients undergoing EAS, attention should be paid to middle-aged and elderly patients and those of colorectal surgery. Laparoscopic surgery should be adopted when feasible and the operation time should be minimized, so as to reduce the incidence of SSI and to reduce the burden on patients and medical institutions.

Objective To explore the application of optical coherence tomography in vascular tissue engineering culture by dynamic monitoring its changes.Methods Human umbilical artery smooth muscle cells were isolated and culture by tissue block method.After passage culture and cell surface markers evaluation, smooth muscle cells were seeded onto polyglycolic acid scaffold and placed into the bioreactor based on Luo-Ye pump with pulsatile stress for three-dimensional culture.At 1、4、 7 、10、14、17、21 days in culture, the image data was obtained by optical coherence tomography technology.The ability of imaging TEBV via OCT was analyzed combined with histopathological observation.Results As the incubation time extended,OCT clearly showed PGA gradual degradation, decreased composite scaffold thickness and the wall structure from loose to tight.At 21 days in culture, the vessel mimics had smooth surface with extracellular matrix evenly distributed and achieved complete reconstruction in the PGA scaffold.Combining with histopathological staining, the blood vessel mimics were similar to natural blood vessels.OCT measured TEBV thickness compared with histopathological measurement had good correlation (r =0.922,P ＜ 0.05).Conclusion Optical coherence tomography could clearly image microstructures of tissue engineered blood vessels cultured in three-dimensional culture system based on Luo-Ye pump, delineate the reconstruction of TEBV-like tissue in the bioreactor and provide as a dynamic and convenient monitoring tool in vascular tissue engineering.

Objective To explore the value of left atrium volume index (LAVI) in the diagnosis of heart failure with preserved ejection fraction (HFPEF). Methods Seventy-seven patients with HFPEF and 33 patients without HFPEF who had been treated from May 2012 to September 2013 in Guangdong General Hospital were en-rolled. The clinical data and a series of ultrasound parameters were collected and analysed. The relationship between LAVI, LAV, and other indexes of diastolic function was determined by Pearson correlation analysis. The value of LAVI and LAV for diagnosing HFPEF was compared by the ROC curve. Results LAVI and LAV of were signifi-cantly greater in HFPEF group than in non-HFPEF group. LAV and LAVI were significantly associated wtih HEPEF. The area under the ROC curve (AUC) of LAVI increased significantly as compared with the AUC of LAV (0.832 vs. 0.799, P<0.05). With a cut-off value of 30 mL/m2, the specificity and sensitivity for diagnosing HEPEF were 64.9%and 84.8%, respectively. Conclusions LAVI may be valuable in the diagnosis of HFPEF.

OBJECTIVE: To analyze the confusing factors and clinical and audiological characteristics of ABR and tympanometry in infants who failed the first and second hearing screening. METHOD: Between August 2005 and November 2007, 94 infants (144 ears) with detailed birth record and hearing screening record were reviewed in the study. The age of this series ranged from 48 days to 6 months. They received hearing screening with otoacoustic emissions (OAE), and all failed in the first and second hearing screening. The birth history, high-risk factors of hearing-impaired during newborn period and pregnancy history of subjects were fully detailed. Subjects were classified according to the age: 1 to 3 months old infants were considered as group 1, while 4 to 6 months old infants were considered as group 2. Auditory brainstem response (ABR), distortion product otoacoustic emissions (DPOAE) and acoustic immittance measurement were examined. RESULT: (1) The 226 Hz tympanograms of 144 ears showed type A of a single-peaked tympanogram in 77 ears (53.4%), a double-peaked tympanogram in 23 ears (16.0%), type Ad of a single-peaked tympanogram in 20 ears (13.9%), type As of a single-peaked tympanogram in 16 ears (11.1%), a flat-shaping tympanogram (type B) in 6 ears (4.2%), and others shapes (including C and D type) in 2 ears (1.4%). (2) The results of ABR showed that there were 64 ears (44.4%) with normal hearing (according to the threshold of ABR), 58 ears (40.3%) with mild hearing loss, 12 ears (8.3%) with moderate hearing loss, 3 ears (2.1%) with severe hearing loss, 7 ears (4.9%) with profound hearing loss. And the proportion of mild hearing loss was increased in the group, while the proportion of moderate and severe hearing loss was decreased. (3) The proportion of type A tympanogram was 50% (32 ears) in normal hearing subjects, which implied that the 226 Hz probe tones to record tympanogram would lead to a high false negative rate. And type proportion of type B tympanogram was higher in normal (4.7%) and mild hearing loss (3.4%) groups than in moderate and severe group. CONCLUSION Middle ear function and development of auditory system in infants may be confusing factors in hearing screening. The 226 Hz probe tones to record tympanogram are unreliable for accurate assessment of middle ear status of infants. Therefore the results of hearing screening should be interpreted appropriately.
Acoustic Impedance Tests ; Ear, Middle ; physiopathology ; Evoked Potentials, Auditory, Brain Stem ; Female ; Hearing Loss ; Hearing Tests ; Humans ; Infant ; Infant, Newborn ; Male ; Neonatal Screening ; Otoacoustic Emissions, Spontaneous