1.Acute closed rupture of the Achilles tendon:a Meta-analysis of nonsurgical and surgical treatment
Keyi CHEN ; Wanjun CAO ; Mengyuan ZHANG
Chinese Journal of Tissue Engineering Research 2015;(15):2449-2454
BACKGROUND:There is always a controversy about nonsurgical and surgical repair of acute Achiles tendon rupture. Except retrospective analysis, there is a lack of high-level evidence-based medicine data.
OBJECTIVE:To systemicaly evaluate the clinical effectiveness of the nonsurgical versus surgical treatment for acute closed rupture of the Achiles tendon.
METHODS:The randomized controled trials about the nonsurgical versus surgical treatment for acute Achiles tendon rupture were searched in PubMed, EMbase, CBM, CNKI, Ovid, and WanFang Data by computer as wel as in relevant journals by hand, which were reported before February 2014. The Cochrane Library (Issue 1, 2014) was also retrieved. Two reviewers independently screened studies, extracted data, and evaluated the methodological quality according to the inclusion and exclusion criteria. Then Meta-analysis was conducted using RevMan 5.2 Software.
RESULTS AND CONCLUSION:Nine randomized controled trials were included, and totaly 874 patients were involved, 441 cases in the nonsurgical group and 433 in the surgical group. The results of Meta-analysis showed that compared with the surgical group, the incidence of complications was lower [OR=0.41, 95%CI(0.26, 0.63), P< 0.000 1], but the rate of tendon re-rupture [OR=2.86, 95%CI(1.62, 5.02),P=0.000 2] and incidence of cicatricial adhesion [OR=0.07, 95%CI(0.03, 0.19),P < 0.000 1] were higher in the nonsurgical group. However, there were no significant differences between the two groups in patient satisfaction, superficial infection, motion recovery, and deep infection. Compared with the surgical treatment, the nonsurgical treatment can reduce the incidence of complications, but has a higher incidence of re-rupture. Because of sample-size and methodological quality restrictions, this conclusion needs further verification of large-sample, multicenter, and high-quality randomized controled trials.
2.Perioperative nursing care to 14 patients with bowel endometriosis
Haina ZHAI ; Mengyuan SUN ; Jie CHEN
Modern Clinical Nursing 2017;16(1):60-62
Objective To sum up the measures for nursing 14 patients with bowel endometriosis(BE).Method Toally 14 BE patients hospitalized in our hospital during January 2009 to January 2016 were treated,with nursing care including:preoperative mental care and bowel preparation,and postoperative close observations to the incisions,dieting guidance and observations and treatment of the complications,and corresponding health education.Result The incisions of all the patients were well healed and the bowel function was restored.Conclusion Such nursing measures as preoperative mental care and bowel preparation,and postoperative close observations to the incisions,dieting guidance and observations and treatment of the complications,and corresponding health education.
3.Research progress on the mechanism of radiation-induced lung injury
Hangjie YING ; Yamei CHEN ; Mengyuan CHEN ; Min FANG ; Ming CHEN
Chinese Journal of Radiation Oncology 2021;30(2):213-216
Radiation-induced lung injury (RILI) is a common complication in thoracic cancer patients through radiotherapy, which can be divided into the early-stage radiation-induced pneumonitis (RP) and late-stage radiation-induced lung fibrosis (RILF). At present, glucocorticoids are mainly adopted in the clinical treatment of RP. However, there has been no effective medical treatment for RILF. RILF patients will eventually die from respiratory failure. The exact mechanism of RILI remains unclear. Current studies have proposed that its possible pathogenesis might consist of genetic heterogeneity, oxidative stress and cell damage. In this review, studies related to the pathogenesis of RILI were summarized.
4.Anti-apopttoic effect of resveratrol on free fatty acid-i nduced human hepatic L02 cells and its mechanisms
Qi YAO ; Meiling LI ; Mengyuan CHEN ; Jianguo DAI
Journal of Medical Postgraduates 2015;(8):804-808
Objective Resveratrol can improve nonalcoholic fatty liver disease , but its action mechanisms remain unclear . This study aimed to investigate the protective effect of resveratrol against the free fatty acid ( FFA)-induced apoptosis of human hepatic L02 cells and its possible mechanisms . Methods Human hepatic L02 cells were incubated with FFA and resveratrol for 24 hours.The prepared cells were divided into a blank control , an FFA ( 2 mmol/L) , and a resveratrol group ( 50 μmol/L resveratrol +2 mmol L/FFA).After treatment, we measured the triglyceride (TG), glutathi-one (GSH), and malonaldchyde (MDA) contents and caspase3 ac-tivity in the hepatocytes , determined the apoptosis of the cells by flow cytometry , and detected the protein expression of silent information regulator 1 (SIRT1) by Western blot as well as the mRNA expressions of catalase (CAT), Mn superoxide dismucase (MnSOD), Bcl-2, and Bax by qRT-PCR. Results The TG content and caspase 3 activity in the hepatocytes were significantly increased in the FFA ([3518.±64.2] μmol/L and [5.97 ±0.78] U/g) and the resveratrol group ([201.1 ±60.1] μmol/L and [3.60 ±0.73] U/g) as compared with those of the blank control ([40.2 ±7.4] μmol/L and [2.56 ±0.49] U/g) (both P<0.05), but the caspase3 ac-tivity was markedly decreased in the resveratrol group in comparison with that of the FFA group (P<0.05).Both early and late apop-tosis rates of the hepatocytes were remarkably higher in the FFA ([6.75 ±0.81]%and [8.52 ±0.54]%) and the resveratrol group ([4.94 ±0.44]%and [6.52 ±0.61]%) than those in the blank control ([3.38 ±0.33]% and [2.72 ±0.19]%) ( both P<0.05), with statistically significant differences between the former two groups (P<0.05).The resveratrol group showed significant differences in the GSH content ([100.2 ±8.8] nmol/g), the MDA level ([2.36 ±0.82] mg/g), and the relative expression of SIRT1 (0.84 ±0.04) from the FFA group ([73.8 ±13.1] nmol/g, [3.77 ±0.92] mg/g, and 0.61 ±0.07) and the control ([113.7 ±13.8] nmol/g, [1.85 ±0.41] mg/g, and 0.90 ±0.02) (all P<0.05).The resveratrol group also exhibited statistically significant differences in the relative expressions of the MnSOD , CAT, and Bax genes from the FFA and control groups (P<0.05). Conclusion Resveratrol attenuates FFA-induced apoptosis of human hepatic L 02 cells by activating SIRT1 and reducing the oxidative stress of hepatocytes .
5.Clinical research of 3-dimensional scaffold of typeⅠcollagen based autologous chondrocyte implantation for knee articu-lar cartilage defect
Mengyuan LI ; Yuanchen MA ; Hong CHEN ; Junxing LIAO ; Qiujian ZHENG
Chinese Journal of Orthopaedics 2015;(9):906-913
Objective To evaluate the clinical effectiveness of 3?dimensional scaffold of typeⅠcollagen based autolo?gous chondrocyte implantation (ACI). Methods Nine patients of knee articular cartilage defect treated with 3?dimensional scaf?fold of type Ⅰcollagen based ACI from January 2013 to March 2014 was analyzed retrospectively, including 6 males and 3 fe?males with an average age of 30 years old. 4 defects located in femoral condyle, 4 in trochlea and 1 in patellae with a mean size of 4.9 ± 2.1cm2 (range, 2.5-10). ACI comprises 2?stage procedure:chondrocytes were first harvested from non?load bearing area of femoral condyle, then chondrocytes expand in vitro for 8-14 days to get enough cells. On second stage, cartilage defects were cov?ered by the grafts and fixed with fibrin albumen glue. All patients received strict rehabilitation protocol. International Knee Docu?mentation Committee (IKDC) scores and Lysh?lm scores were compared pre?operatively and 3, 6, 12 months post?operatively. MR and magnetic resonance observation of cartilage repair tissue (MOCART) scores were analyzed within 3 days, 3, 6, 12 months post?operatively. Results All the patients were followed up. IKDC score was 52.7 ± 6.9 pre?operatively and respectively 71.1 ± 6.6, 83.3±2.9 and 92.0±3.6 3, 6, 12 months post?operatively with significant differences. The Lysh?m score was 55.8±8.7 pre?oper?atively and respectively 74.8±7.0, 84.8±4.8 and 93.1±5.7 3, 6, 12 months post?operatively with significant differences. 8 patients had MRI. The mean MOCART score 3 days, 3, 6, 12 months post?operatively was respectively 43.6±6.0, 47.8±5.8, 57.8±5.8, 64.3± 4.8 and 72.1±4.9 with significant differences. T2 value of transplanted area was 48.7±3.2 12 months post?operatively with no sig?nificant differences compared to normal area. Conclusion Three?dimensional scaffold of typeⅠcollagen based ACI could re?pair knee articular cartilage defect. It may be a good choice for treating articular cartilage defect which shows satisfactory results.
6.Research progress on prophylactic cranial irradiation in patients with surgically resected small cell lung cancer
Mengyuan CHEN ; Xiao HU ; Jin WANG ; Ming CHEN
Chinese Journal of Radiation Oncology 2018;27(11):1026-1029
The incidence of small cell lung cancer ( SCLC) is relatively low, which approximately accounts for 13%-20% of all types of lung cancers. SCLC is characterized by high-degree malignancy and high metastasis and recurrence rates within a short period of time. Upon the confirmed diagnosis, limited-stage SCLC approximately accounted for 30% of SCLC and merely 5% of these patients were eligible for surgery. Over half of the patients who obtained complete remission after chemoradiotherapy presented with brain metastases. The postoperative incidence of brain metastases in patients with stageⅠ,ⅡandⅢSCLC was 6%-14%,13%-38% and 11%-36%, respectively. Prophylactic cranial irradiation ( PCI) can enhance the overall survival rate of patients with complete remission after chemoradiotherapy and reduce the incidence of brain metastasis, which is a pivotal part of comprehensive treatment of limited-stage SCLC. However, the application of PCI remains controversial in clinical practice and the clinical efficacy for patients with surgically resected SCLC significantly varies. In this article, literature review was conducted and the research progress in this field was summarized.
7.Effect of lung protective ventilation strategy on inflammatory responses in brain tissues of elderly patients requiring one-lung ventilation during radical resection for esophagus cancer
Wekhen GUO ; Mengyuan CHEN ; Tianfeng HUANG ; Yali GE ; Hong GAO ; Ju GAO
Chinese Journal of Anesthesiology 2017;37(2):139-142
Objective To evaluate the effect of lung protective ventilation strategy on inflammatory responses in brain tissues of elderly patients requiring one-lung ventilation (OLV) during radical resection for esophagus cancer.Methods Sixty patients of both sexes,aged 65-80 yr,weighing 45-75 kg,of American Society of Anesthesiologists physical status Ⅱ or Ⅲ,scheduled for elective radical resection for esophageal cancer,were divided into volume-controlled ventilation (VCV) group (n =30) and VCV plus protective ventilation strategy group (PV group,n =30) using a random number table.In group VCV,the tidal volume was set at 10 ml/kg during two-lung ventilation (TLV) and at 7 ml/kg during OLV with inspiratory/expiratory ratio 1:2.In group PV,the tidal volume was set at 7 ml/kg during TLV and at 5 ml/kg during OLV with inspiratory/expiratory ratio 1:2 and positive end-expiratory pressure 5 cmH2O,and lung recruitment maneuver was performed every 45 min.End-tidal pressure of carbon dioxide was maintained at 35-45 mmHg,and bispectral index value at 40-60 in both groups.Before induction of anesthesia (T1),at 10 min of TLV (T2),at 30 min of OLV (T3),at 15 min after restoration of TLV (T4) and at 24 h after operation (T5),jugular bulb venous blood samples were taken for determination of serum glial fibrillary acid protein,tumor necrosis factor-α and interleukin-6 concentrations by enzyme-linked immunosorbent assay.The cognitive function was assessed using Mini-Mental State Examination before operation (T0),at T5 and at 3 and 7 days after operation (T6,7).The occurrence of postoperative delirium was recorded.Results Compared with group VCV,the serum concentrations of tumor necrosis factor-α,interleukin-6 and glial fibrillary acid protein were significantly decreased at T3-5,Mini-Mental State Examination scores were increased at T6,7,and the incidence of postoperative delirium was decreased in group PV (P<0.05).Conclusion The mechanism by which lung protective ventilation strategy decreases the development of postoperative cerebral dysfunction is related to reduction of inflammatory responses in brain tissues of elderly patients requiring OLV during radical resection for esophagus cancer.
8.rTFPI reduces ischemic necrosis in random pattern skin flap avulsion injuries rat model
Xudong ZHANG ; Jinfang WU ; Dongsheng MAO ; Limei CHEN ; Qiming ZHAO ; Leqi SUN ; Mengyuan ZHANG
Chinese Journal of Microsurgery 2016;39(4):359-362
Objective To determine whether rTFPI could inhibit vascular thrombosis and salvage random pattern skin flaps following AIRC in rat models.Methods From April,2013 to June,2015,30 adult male Sprague-Dawley rats were randomized into 3 groups;a control group,an avulsion injury with roll compaction (AIRC) group,and an AIRC plus rTFPI therapy group.An 8.0 cm× 2.5 cm random flap was raised on the dorsum of each rat.The AIRC and AIRC plus rTFPI flaps were then altered with a device designed to simulate avulsion injury with roll compaction.After flap closure primarily,treatment was initiated immediately and continued for 3 days.Phosphate buffered saline was used in the control group and the AIRC group,while the AIRC plus rTFPI group received the recombinant Tissue Factor Pathway Inhibitor.Laser Doppler flowmetry and infra-red thermalgraphy were used on postoperative day three to assess nicrocirculatory blood flow and viability of the avulsed flaps.At postoperative day seven,final flap survival was determined.Using SPSS19.0 statistical analysis.Results The flap survival in AIRC group was only (32.7 ± 5.2)% versus (62.5 ± 6.5)% in control group,but the flap survival significantly increased (51.6 ± 8.2)% after topical injecting rTFPI in experimental group.Statistically significant differences exist (P < 0.05) between every two groups.The detection results of Laser-Doppler flowmetry and infra-red thermography showed that perfusion arrived the centre of the flaps in experimental group,while perfusion only arrived the proximal part of the flaps in the AIRC control group.Conclusion rTFPI therapy is effective in reducing ischemic necrosis of random pattern flaps following avulsion injury in the rat model.It suggests that rTFPI therapy may play an important role in clinical salvage of the failing avulsion injuries with roll compaction.
9.Effects of lung-protective ventilation on cerebral oxygen metabolism and postoperative cognitive function in elderly patients requiring one-lung ventilation
Weizhen GUO ; Mengyuan CHEN ; Ju GAO ; Yali GE ; Tianfeng HUANG ; Luojing ZHOU
Chinese Journal of Anesthesiology 2017;37(4):396-399
Objective To evaluate the effects of lung-protective ventilation on the cerebral oxygen metabolism and postoperative cognitive function in elderly patients requiring one-lung ventilation (OLV).Methods Sixty patients of both sexes,aged 65-80 yr,weighing 45-75 kg,of American Society of Anesthesiologists physical status Ⅱ or Ⅲ,scheduled for elective radical resection for esophageal cancer performed via video-assisted thoracoscope with general aneshesia,were divided into 2 groups (n =30 each)using a random number table:volume-controlled ventilation group (group VCV) and protective ventilation group (group PV).In group VCV,the tidal volume (VT) was set at 10 ml/kg during two-lung ventilation (TLV) and at 7 ml/kg during OLV.In group PV,the VT was set at 7 ml/kg during TLV and at 5 ml/kg during OLV with positive end-expiratory pressure of 5 cmH2O,and lung recruitment maneuver was performed every 45 min with inspiratory pressure at 15,20 and 25 cmH2O,PEEP 5 cmH2O,3 breaths per pressure,5 s/breath.Before induction of anesthesia (T1),at 10 min of TLV (T2),at 30 min of OLV (T3) and at 15 min after restoration of TLV (T4),blood samples were taken from the radial artery and jugular bulb for blood gas analysis,and pH value,arterial oxygen partial pressure (PaO2),arterial carbon dioxide partial pressure (PaCO2),arterial oxygen saturation (SaO2) and jugular venous oxygen saturation (SjvO2) were recorded.Oxygenation index (OI),intrapulmonary shunt (Qs/Qt),arteriovenous blood O2 content difference (Da-jvO2) and cerebral O2 extraction rate (CERO2) were calculated at the same time.Cognitive function was assessed using Mini-Mental State Examination at 7 days and 1 month after operation,and the development of postoperative cognitive dysfunction was recorded.Results PaO2,DajvO2,CERO2 and Qs/Qt were significantly higher and SjvO2 and OI were lower at T2-4 than at T1 in two groups (P<0.05).PaO2,SjvO2 and OI were significantly lower and Qs/Qt and CERO2 were higher at T3 than at T2,and Da-jvO2 was higher at T3-4 than at T2 in two groups (P<0.05).Compared with group VCV,PaO2,PaCO2,SjvO2 and OI were significantly increased and Qs/Qt,Da-jvO2 and CERO2 were decreased at T3,the Mini-Mental State Examination scores were increased on postoperative day 7,and the incidence of postoperative cognitive dysfunction was decreased in group PV (P<O.05).Conclusion Lungprotective ventilation is helpful in improving postoperative brain function of elderly patients requiring OLV.
10.Construction of quality evaluation index system for palliative care in ICU
Mengyuan LIU ; Huili ZHAO ; Meiyu LIU ; Ying CHEN ; Dan HU
Chinese Journal of Practical Nursing 2021;37(23):1817-1823
Objective:To construct a palliative care quality evaluation index system in ICU, and to provide guidance for implementing high-quality palliative care in ICU.Methods:The questionnaire was designed by literature review, qualitative interview and questionnaire survey, and 20 experts were inquired in two rounds by Delphi method from September to November 2020.Results:After two rounds of letter consultation, experts′ response rates were 80% and 100% respectively, experts′ authority coefficient was 0.873, and coordination coefficient of experts′ opinion were 0.198 and 0.176 respectively. The quality evaluation index system for palliative care in ICU included 6 first-level indicators, 22 second-level indicators and 95 third-level indicators.Conclution:The constructed evaluation system for palliative care is scientific and reliable,which can provide guidance for the implementation and development of ICU high-quality palliative care in China.