Objective     To investigate the perioperative clinical effects and follow-up results of minimally invasive coronary artery bypass grafting (MICS CABG) versus conventional coronary artery bypass grafting (CABG) in thoracotomy. Methods     The patients who received off-pump CABG in Beijing Anzhen Hospital from January 2017 to October 2021 were collected. Among them, the patients receiving MICS CABG performed by the same surgeon were divided into a minimally invasive group, and the patients receiving median thoracotomy were into a conventional group. By propensity score matching, preoperative data were balanced. Perioperative and postoperative follow-up data of the two groups were compared. Results     A total of 890 patients were collected. There were 211 males and 28 females, aged 60.54±9.40 years in the minimally invasive group, and 487 males and 164 females, aged 62.31±8.64 years in the conventional group. After propensity score matching, there were 239 patients in each group. Compared with the conventional group, patients in the minimally invasive group had longer operation time, shorter drainage duration, less drainage volume on the first postoperative day, shorter postoperative hospital stay, and lower rate of positive inotropenic drugs use, while there was no statistical difference in the mean number of bypass grafts, ICU stay, ventilator-assisted time, blood transfusion rate or perioperative complications (P>0.05). During the median follow-up of 2.25 years, there was no statistical difference in major adverse cardiovascular and cerebrovascular events, including all-cause death, stroke or revascularization between the two groups (P>0.05). Conclusion    Reasonable clinical strategies can ensure perioperative and mid-term surgical outcomes of MICS CABG not inferior to conventional CABG. In addition, MICS CABG has the advantages in terms of postoperative hospital stay, postoperative drainage volume, and rate of positive inotropic drugs use.

Objective    To explore coronary angiographic characteristics in patients with symptomatic recurrence after coronary artery bypass grafting (CABG). Methods    We performed a retrospective study of 997 patients with symptomatic recurrence after CABG in Beijing Anzhen Hospital from 2010 to 2020. There were 762 males and 235 females, with an average age of 62.41±8.70 years. Results    There was a high prevalence of risk factors like hypertension, diabetes and a history of smoking. Diseased arterial grafts accounted for 27.44% while saphenous vein graft 54.40%; 240 (24.07%) patients had all patent grafts. The main lesion characteristics of diseased grafts were chronic total occlusion lesions (79.57%). Most patients had more diseased native vessels after CABG than before. The type C coronary artery disease in native vessels relevant to ischemic area occurred in 674 (67.60%) patients; 525 (52.66%) patients with recurrent symptom after CABG had both diseased grafts and diseased native vessels. Conclusion     Graft status in patients with symptomatic recurrence after CABG is worse than we expected. The majority have newly developed lesions both in grafts and native vessels. Native vascular lesions will continue to progress after CABG.

As one of the hallmarks of cancer, metabolic reprogramming leads to cancer progression, and targeting glycolytic enzymes could be useful strategies for cancer therapy. By screening a small molecule library consisting of 1320 FDA-approved drugs, we found that penfluridol, an antipsychotic drug used to treat schizophrenia, could inhibit glycolysis and induce apoptosis in esophageal squamous cell carcinoma (ESCC). Gene profiling and Ingenuity Pathway Analysis suggested the important role of AMPK in action mechanism of penfluridol. By using drug affinity responsive target stability (DARTS) technology and proteomics, we identified phosphofructokinase, liver type (PFKL), a key enzyme in glycolysis, as a direct target of penfluridol. Penfluridol could not exhibit its anticancer property in PFKL-deficient cancer cells, illustrating that PFKL is essential for the bioactivity of penfluridol. High PFKL expression is correlated with advanced stages and poor survival of ESCC patients, and silencing of PFKL significantly suppressed tumor growth. Mechanistically, direct binding of penfluridol and PFKL inhibits glucose consumption, lactate and ATP production, leads to nuclear translocation of FOXO3a and subsequent transcriptional activation of BIM in an AMPK-dependent manner. Taken together, PFKL is a potential prognostic biomarker and therapeutic target in ESCC, and penfluridol may be a new therapeutic option for management of this lethal disease.

Objective:To explore the perioperative effect of radial artery as a sequential graft in coronary artery bypass grafting(CABG).Methods:The clinical data and perioperative complications of 109 patients, who underwent radial artery(RA) or great saphenous vein(SVG) as a sequential graft during CABG from April 2020 to December 2020 in Beijing Anzhen Hospital, were analyzed, there were 86 males and 23 females, aged from 39 to 79 years, with an average of(61.1±8.0)years old. According to the graft materials, they were divided into the RA group(n=47) and SVG group(n=62).Results:There were no significant differences between the two groups in age, gender, comorbidities, echocardiographic results, transplant vascular indexes, coronary angiography results, and operation methods(on-pump or off-pump, use of left internal mammary artery, number and distribution of distal anastomoses)( P>0.05). There were also no significant difference between the two groups in ICU stay, postoperative hospital stay and drainage with 24 hours after CABG( P>0.05). The incidence of postoperative cerebrovascular events, postoperative infection and secondary thoracotomy in the RA group were higher than that in the SVG group. The incidence of myocardial infarction, postoperative ventricular arrhythmia and postoperative IABP assistance in the SVG were higher than that in the RA group, but the difference was not statistically significant( P>0.05). Conclusion:The application of radial artery as a sequential graft during CABG does not increase the risk of perioperative complications, and the patients recover smoothly.

Objective:To compare the perioperative outcomes and short-term graft patency between patients who underwent multivessel off-pump coronary artery bypass graft(OPCABG) via left intercoastal space or sternotomy.Methods:Between January 2017 and August 2019, 100 patients who underwent minimal invasive coronary artery bypass graft(MICS CABG) were compared with 235 patients who underwent OPCABG by single surgeon at our institute. Among them, 257 cases were male and 78 were female, aged 34 to 84 years, with mean age(61.35±8.79)years old. Due to important differences in patients’ characteristics, a propensity score-matched analysis based on 12 covariates was performed to match in a 1∶2 fashion. 82 patients(MICS group) were matched with 127 patients(OPCABG group). Surgical and postoperative outcomes were evaluated.Results:There was no statistical difference of perioperative mortality, myocardial infarction, and stroke rate( P>0.05). In MICS group, use of internal thoracic artery was higher and conversion to cardiopulmonary bypass was lower( P<0.05), but reoperation, new onset atrial fibrillation , and the use of mechanical device were similar( P>0.05). In addition, operation duration was longer but transfusion rate, postoperative chest tube drainage within 24 hours and postoperative hospital stays were less in the MICS group( P<0.05). LIMA, vein and overall graft patency were similar in the two groups shown by postoperative one-year CTA( P>0.05). Conclusion:MICS CABG is safe and feasible for patients with multiple coronary lesions. It has similar in-hospital outcomes and short-term graft patency but less transfusion and faster recovery compared to conventional OPCABG via sternotomy.

Objective:To investigate the influence of the complexity of coronary artery disease based on SYNTAX score(SS) on the effect of minimally invasive or conventional bypass surgery.Methods:From January 2017 to January 2020, the medical group of the Minimally Invasive Cardiac Surgery Center of Beijing Anzhen Hospital received a total of 760 patients undergoing off-pump coronary artery bypass grafting(OPCABG) surgery, including 596 males and 164 females. 28-85 years old, with an average of(60.88±9.36) years old. 379 cases underwent minimally invasive coronary artery bypass grafting(MICS CABG)(minimally invasive group) and 381 cases underwent median thoracotomy CABG(conventional group). In this study, according to the SS, patients of both groups were divided into 3 levels, and then the perioperative data of the two sets of high, medium, and low score intervals were compared respectively, and a preliminary analysis of the perioperative data for patients in each SS score section was performed.Results:There was no significant difference in the SS value between the minimally invasive group and the conventional group in the three intervals. There was no statistical difference in preoperative data including age, sex ratio, body mass index, hypertension, diabetes, abnormal head CT history, lung disease, history of tobacco and alcohol. The number of minimally invasive bypasses in the three groups was significantly less than that of the conventional group. The duration of minimally invasive surgery in the SS low score group was similar to that of conventional surgery, and the duration of minimally invasive surgery in the SS medium and high score group was longer than that in the conventional group. The hospital stay in the SS low and middle score group was less than that of the conventional group. There was no statistical difference in the proportion of MACCE and auxiliary equipment implantation in the 30-day perioperative period.Conclusion:In the same grade of SS group, there is no significant difference on the perioperative clinical effect between conventional CABG or MICS CABG group. The complexity of coronary artery disease is not the decisive basis for choosing minimally invasive or conventional bypass.

Objective     To compare the mid- and long-term efficacy of minimally invasive coronary artery bypass grafting (MICS) versus conventional coronary artery bypass grafting (CABG). Methods     This study analyzed 679 patients with coronary heart disease treated in the Minimally Invasive Heart Center of Beijing Anzhen Hospital from 2015 to 2019, including 532 males and 147 females with an average age of 61.16 years. A total of 281 patients underwent MICS (a MICS group) and 398 patients underwent conventional CABG (a CABG group). The clinical data of the patients in the two groups were analyzed. Results    The average operation time was longer (P<0.001), the total hospital stay was shorter (P<0.001), and the amount of drainage 24 h after the operation was less (P=0.029) in the MICS group. There was no statistical difference in the incidence of perioperative complications between the two groups. The median follow-up time was 2.68 years. The follow-up results showed that the total incidence of cumulative main adverse cardiovascular and cerebrovascular events in the CABG group was higher at 2 years (6.2% vs. 3.8%) and 4 years (9.3% vs. 7.6%), but the difference was not statistically significant (P>0.05). There was no statistical difference in 2- or 4-year all-cause death between the two groups (3.5% vs. 2.8%, 5.6% vs. 2.8%, P>0.05). At the same time, there was no statistical difference in the incidence of myocardial infarction, stroke or revascularization between the two groups (P>0.05). Conclusion    Compared with conventional CABG, MICS can achieve satisfactory mid- and long-term outcomes.

Objective    To investigate the safety and effectiveness of minimally invasive coronary artery bypass grafting (MICABG) through comparing the perioperative clinical effects of conventional surgery and MICABG. Methods    A total of 543 patients in the single medical group of Beijing Anzhen Hospital who underwent beating coronary artery bypass grafting from January 2017 to September 2020 were collected, including 161 patients receiving MICABG (a minimally invasive group, 143 males and 18 females, aged 60.08±9.21 years), 382 patients receiving median thoracotomy (a conventional group, 284 males and 98 females, aged 61.68±8.81 years). The propensity score was used to match 143 patients in each of the two groups, and the perioperative data of the two groups were summarized and analyzed. Results    There was no death, perioperative myocardial infarction or stroke in the minimally invasive group. Compared with the conventional group, the minimally invasive group had longer operation time (296.36±89.4 min vs. 217.80±50.63 min, P=0.000), less number of bypass grafts (2.86±1.03 vs. 3.17±0.78, P=0.005), shorter postoperative hospital stay (6.29±1.46 d vs. 6.78±2.61 d, P=0.031), less drainage on postoperative day 1 (339.57±180.63 mL vs. 441.92±262.63 mL, P=0.001) and lower usage rate of inotropic drugs (9.09% vs. 26.57%, P=0.001). There was no statistical difference between the two groups in postoperative ICU stay ventilator assistance time, blood transfusion rate, secondary thoracotomy rate, or use of mechanical equipment. Conclusion    Reasonable clinical strategies can ensure the satisfactory overall safety of MICABG. In addition, it has the advantages of shorter postoperative hospital stay, less bleeding and smaller dosage of inotropic drugs.

Objective    To study the learning curve of minimal invasive coronary artery bypass grafting (MICS CABG) and the influence on the perioperative clinical effects by analyzing operation time. Methods    From March 2012 to November 2020, 212 patients underwent MICS CABG by the same surgeon. Among them, 59 patients (52 males and average age of 62.89±8.27 years) with single vessel bypass grafting were as a single-vessel group and 153 patients (138 males, average age of 59.80±9.22 years) with multi-vessel bypass grafting were as a multi-vessel group. Two sets of operation time-operation sequence scatter plots were made and learning curve was analyzed by cumulative summation (CUSUM) and regression method of operation time. The surgical data of each group before and after the inflection point of the learning curve were compared with the main clinical outcome events within 30 days after surgery. Results    There was no death, perioperative myocardial infarction and stroke in 212 MICS CABG patients and no transfer to cardiopulmonary bypass or redo thoracotomy. The learning curve conformed to the cubic fitting formula. In the single- vessel group, CUSUM (x operation number)=–1.93+93.45×x–2.33×x2+0.01×x3, P=0.000, R2=0.986, the tipping point was 27 patients. In the multi-vessel group, CUSUM (x)=y=2.87+1.15×x–1.29× x2+3.463×x3, P=0.000, R2=0.993, and the tipping point was 59 patients. The two sets of case data were compared before and after the learning curve and there was no statistical difference in main clinical outcomes within 30 days (mortality, acute myocardial infarction, stroke, perioperative blood transfusion rate), ventilator tube, and intensive care unit retention. Conclusion    The learning curve of MICS CABG conforms to the cubic formula, and the process transitions from single to multiple vessels bypass. To enter the mature stage of the learning phase, a certain number of patients need to be done. Reasonable surgical procedures and quality control measures can ensure the safety during the learning phase.

Objective:To study the reasons of excessive expenses in hospital and explore the segmented management of the cost of DRG group.Methods:Taking the FC35(coronary artery bypass grafting, without complications and comorbidities)as an example, 1 416 patients of FC35 group discharged from the hospital from June to December 2019 were selected. Taking the average cost of the disease group in the tertiary general hospitals of Beijing in 2019 as the benchmark value, the patients were divided into patients with excessive cost and patients without excessive cost. The hospitalization expenses of the two groups were compared and analyzed, the horizontal comparison between departments and the segmented statistics of patients′ expenses were conducted.Results:In the FC35 group, 614 patients(43.36%)had excessive hospitalization costs. Clinical departments B, D and E had the largest number of cases and the overall cost efficiency was better. Operating room and anesthesiology expenses accounted for 52.77% of the total cost of patients. The cost of high-value tube, high-value line, high-value other, mesh and sanitary materials in the operating room ranked in the top 5.Conclusions:The cost of high value consumables in the operating room is one of the important reasons for the excessive cost of patients.