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Association between the number of retrieved lymph nodes and demographic/tumour-related characteristics in colorectal cancer: a systematic review and meta-analysis

Por: Liu · Q. · Huang · M. · Yang · J. · Jiang · M. · Zhao · Z. · Zhao · H. · He · T. · Bai · Y. · Zhang · R. · Zhang · M.
Objective

Clinical practice guidelines recommend retrieving at least 12 lymph nodes for correct staging in colorectal cancer. However, it is difficult to retrieve adequate lymph nodes because of various factors. We aimed to evaluate the association between the number of retrieved lymph nodes and demographic/tumour-related characteristics in colorectal cancer.

Design

Systematic review and meta-analysis of primary studies.

Data sources

PubMed, Embase, Cochrane and Web of Science were searched from January 2016 to June 2023.

Eligibility criteria for selecting studies

Studies that evaluated the association between retrieved lymph nodes and demographic/tumour-related characteristics in colorectal cancer were included.

Data extraction and synthesis

OR with 95% conference intervals was extracted and pooled.

Results

A total of 54 studies containing 2 05 821 patients were included in this meta-analysis. The results showed that fewer nodes were retrieved from elderly patients (OR=0.70, 95% CI (0.54 to 0.90), p=0.005), and from tumours located in the left colon than in the right colon (OR=0.43, 95% CI (0.33 to 0.56), p

Conclusions

The study results suggest that clinicians have an increased opportunity to retrieve sufficient lymph nodes for accurate pathological staging to guide treatment decisions in patients with colorectal cancer who are young, female, with tumours located in the right colon, advanced T stage and N2 stage.

Nationwide survey of physicians familiarity and awareness of diabetes guidelines in China: a cross-sectional study

Por: Jia · L.-y. · Huang · C.-x. · Zhao · N.-j. · Lai · B.-y. · Zhang · Z.-h. · Li · L. · Zhan · N. · Lin · Y.-b. · Cai · M.-n. · Wang · S.-q. · Yan · B. · Liu · J.-p. · Yang · S.-y.
Objective

This study aims to investigate physicians’ familiarity and awareness of four diabetes guidelines and their practice of the recommendations outlined in these guidelines.

Design

A cross-sectional study.

Setting

An online questionnaire survey was conducted among physicians affiliated with the Specialist Committee for Primary Diabetes Care of China Association of Chinese Medicine, using the snowball sampling method to ensure a broader representation of physicians.

Participants

1150 physicians from 192 cities across 30 provinces in China provided complete data.

Results

Tertiary care hospital physicians (TCPs) exhibited the highest familiarity with the Guideline for the Prevention and Treatment of Type 2 Diabetes Mellitus in China (91.3%), followed by the National Guidelines for the Prevention and Control of Diabetes in Primary Care (76.8%), the Standards of Medical Care in Diabetes (72.2%) and the Guidelines for Prevention and Treatment of Diabetes in Chinese Medicine (63.8%). Primary care practitioners (PCPs) exhibited familiarity with these four guidelines at about 50% or less. Self-reported reference to modern diabetes guidelines by physicians is more frequent than traditional Chinese medicine (TCM) diabetes guidelines, with rates at 73.2% and 33.8%, respectively. Approximately 90% of physicians provided instructions on self-monitoring of blood glucose to their patients with diabetes. Less than one-third of physicians referred patients to a specialised nutritionist. In terms of health education management, TCPs reported having a diabetes health management team at the rate of 75.7%, followed by secondary care hospital physicians at 57.0% and PCPs at 27.5%. Furthermore, approximately 40% of physicians did not fully grasp hypoglycaemia characteristics.

Conclusions

Familiarity and awareness of the screening guidelines varied among physicians in different hospital settings. Importantly, significant discrepancies were observed between physicians’ awareness and their self-reported reference to modern medicine guidelines and TCM guidelines. It is essential to consistently provide education and training on diabetes management for all physicians, particularly PCPs.

Risk factors of incontinence-associated dermatitis in older adults: a protocol for systematic review and meta-analysis

Por: Fan · S. · Jiang · H. · Shen · J. · Lin · H. · Yang · L. · Yu · D. · Chen · L.
Introduction

Due to their ageing skin, older adults are more likely to develop incontinence-associated dermatitis (IAD). Although previous attempts to look at the risk factors for IAD in older adults were done, methodological barriers hindered an in-depth understanding. By investigating risk factors for IAD in the ageing population, the development of precise clinical interventions and guidance could be facilitated, which in turn would enhance patient care standards for incontinence management in this target group. To address this knowledge gap, this systematic review with meta-analysis aims to explore the major risk elements linked to IAD among older adults.

Methods and analysis

The Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols are adhered to in this systematic review and meta-analysis. To achieve its objectives, a comprehensive search strategy PubMed, Embase, Web of Science, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, Medline, Chinese Scientific Journal Database (VIP database), WanFang Data Knowledge Service Platform, China National Knowledge Infrastructure, Chinese Biomedical Literature Database, along with other relevant sources published until 18 July 2023 in both English and Chinese languages will be performed. The screening of articles, data abstraction and risk of bias evaluation will be done by two impartial reviewers. RevMan V.5.3 software will be used for data synthesis. The quality of the included study will be assessed using the Newcastle-Ottawa Quality Assessment tool and the Agency for Healthcare Research and Quality. The I2 test will identify the heterogeneity.

Ethics and dissemination

There is no need for ethical approval. Individual patient information or the rights of participants will not be compromised by this protocol. The findings will either be published in a peer-reviewed journal.

PROSPERO registration number

CRD42023442585.

Response to letter to the editor iwj‐23‐840

International Wound Journal, Volume 21, Issue 4, April 2024.

Impact of preoperative chemotherapy on cutaneous wound healing in lung cancer patients: A meta‐analysis

Abstract

As part of their treatment, lung cancer patients frequently endure thoracic oncological surgery, with preoperative chemotherapeutic interventions being the common approach. However, the potential impact of these chemotherapeutic regimens on cutaneous wound healing outcomes following surgery remains the topic of considerable clinical interest. This meta-analysis sought to evaluate comprehensively the effect of preoperative chemotherapeutic regimens on cutaneous wound healing in lung cancer patients following thoracic oncological surgery. Extensive literature searches were conducted using the leading databases PubMed, Embase, Cochrane Library and Scopus. Eight studies out of 1342 identified satisfied the inclusion criteria. Consideration was given to both randomized controlled trials (RCTs) and observational studies. Data pertaining to study characteristics, patient demographics, chemotherapeutic regimens and wound healing outcomes were extracted with great attention to detail. The examination of these varied studies provided insights into the fluctuations in rates of recovery following treatment, incidences of wound infections and frequencies of surgical complications. The research studies provided odds ratios for recovery that varied significantly in magnitude from 0.95 to 0.38, with regard to the probability of wound infection. Furthermore, a range of odds ratios for complications were disclosed, with certain odds ratios displaying narrow confidence intervals. The complexity of the effect of preoperative chemotherapy on wound closure subsequent to thoracic oncologic surgery is highlighted by our findings. The results underscore the need for individualized treatment strategies for lung cancer patients undergoing surgical procedures that strike a balance between patient safety and optimal clinical outcomes.

Wound complication risk factors following open reduction and internal fixation of ankle fractures

Abstract

This study was designed to identify risk factors for wound complications including surgical site infection (SSI) and wound healing issues following open reduction and internal fixation (ORIF) of ankle fractures. A retrospective analysis of individuals with ankle fractures treated with ORIF was undertaken. Study subjects were divided into a wound complications (WC) group and a no wound complication (NWC) group. The WC group was further divided into an SSI group and wound healing issues group. Twenty-one potential risk factors associated with wound complications after ORIF were tracked. Uni- and multivariate binary logistical regression analyses were used to identify risk factors associated with wound complications, ISS and wound healing issues. In total, 613 individuals, who had undergone surgery for ankle fractures formed the study cohort. The incidence of postoperative wound complications was 10.3% (63 cases), including 5.2% of SSI (32 cases) and 5.1% of wound healing issues (31 cases). The independent risk factors for wound complications were age 65 years or older, preoperative serum albumin level below 35 g/L, peripheral neuropathy, open fracture, fewer than seven cases per year in surgical volume, and attending surgeon level. The independent risk factors for SSI were age 65 years or older, preoperative serum albumin level below 35 g/L, open fracture and fewer than seven cases per year in surgical volume. The independent risk factors for wound healing issues were preoperative serum albumin level below 35 g/L, peripheral neuropathy, open fracture and attending surgeon level. Herein we found both factors inherent to the injury and individual and those pertaining to the surgical team affected the frequency of wound complications after ORIF of ankle fractures. Specifically, advanced age and low surgical volume were associated with a greater risk of SSI. Peripheral neuropathy and the low expertise level on the part of the surgeon were associated with a greater risk of wound healing issues. Hypoproteinaemia and open fracture were both associated with a greater risk of both SSI and wound healing issues.

Modified combined short and long axis method versus oblique axis method in adult patients undergoing right internal jugular vein cannulation: A randomized controlled non-inferiority study

by Jia-Xi Tang, Ling Wang, Ju Ouyang, Xixi Tang, Mengxiao Liu, Hongliang Liu, Fang Xu

Background

Modified combined short and long axis method (MCSL) can replace oblique axis in-plane method (OA-IP) for internal jugular vein cannulation (IJVC). This randomized, non-inferiority study estimated the efficacy of MCSL compared with OA-IP in right IJVC.

Methods

Patients (18–75 yr. old) undergoing right IJVC under local anesthesia were randomly assigned to MCSL or OA-IP group. The primary outcome is the event of first needle pass without posterior vessel wall puncture (PVWP). Secondary outcomes included needle attempts, success rate, puncture and cannulation time, needle visualization, probe placement difficulty and complications.

Results

Among 190 randomized patients, 187 were involved in the analysis. The first needle pass without PVWP was 85(89.47%) in the MCSL and 81 (85.26%) in the OA-IP (p = 0.382), with a mean rate difference of 4.2% (95% confidence interval: -5.2–13.6), which confirmed the non-inferiority with the margin of -8%. MCSL group exhibited shorter procedure time and lower complications than OA-IP group. No significant differences were discovered between groups in needle attempts, success rate, incidence of probe placement difficulty and needle visualization.

Conclusions

MCSL is non-inferior to OA-IP in first needle pass without PVWP in adults who underwent elective right IJVC and associate with less complications and shorter operating time.

Clinical trial registration

ChiCTR, ChiCTR2100046899.

Assessing postoperative wound infection rates in ultrasound‐guided microwave ablation versus conventional surgery for varicose veins

Abstract

Varicose veins are the prevalent vascular disorder that has conventionally been managed via risky postoperative wound infections and conventional surgery. While ultrasound-guided microwave ablation (UMA) has gained attention as a minimally invasive alternative, there is still a lack of research examining its comparative effectiveness. A prospective comparative investigation was undertaken in the Zhejiang region of China from January to November 2023, involving 140 patients who had received the diagnosis of primary varicose veins. An equal number of 70 patients underwent UMA and conventional surgery. Exclusion criteria for the study encompassed adult patients aged 18–65, with the exception of those who had undergone prior venous surgery, deep vein thrombosis or peripheral arterial disease. The demographical characteristics, procedural details and complication profiles of patients who developed postoperative wound infections within 30 days were analysed statistically. The outcomes demonstrated that postoperative wound infections were significantly diminished (5.7%) with UMA in comparison to conventional surgery (17.1%). In addition, the average duration of procedures and length of hospital stay for UMA patients were both reduced, although neither of these differences was found to be statistically significant (p > 0.05). Infection management, age and gender distribution of varicose veins were comparable between the two groups (p > 0.05). A significant inverse correlation was observed between the severity of varicose veins and postoperative outcomes, as determined by the regression analysis (p < 0.05). Using UMA to treat varicose veins showed promise as an alternative to conventional surgery, specifically in minimizing the incidence of postoperative wound infections. Additional research and clinical consideration are needed regarding the potential transition toward minimally invasive techniques in treatment of varicose veins, as suggested by these results.

A Kano model-based demand analysis and perceived barriers of pulmonary rehabilitation interventions for patients with chronic obstructive pulmonary disease in China

by Xinmeng Yao, Jinmei Li, Jialu He, Qinzhun Zhang, Yi Yu, Yinan He, Jinghua Wu, Weihong Tang, Chengyin Ye

Background

Pulmonary rehabilitation (PR) has been recognized to be an effective therapy for chronic obstructive pulmonary disease (COPD). However, in China, the application of PR interventions is still less promoted. Therefore, this cross-sectional study aimed to understand COPD patients’ intention to receive PR, capture the potential personal, social and environmental barriers preventing their willingness of receiving PR, and eventually identify demanding PR services with the highest priority from patients’ point of view.

Methods

In total 237 COPD patients were recruited from 8 health care facilities in Zhejiang, China. A self-designed questionnaire was applied to investigate patients’ intention to participate in PR and potentially associated factors, including personal dimension such as personal awareness, demographic factors, COPD status and health-related literacy/behaviors, as well as social policies and perceived environmental barriers. The demand questionnaire of PR interventions based on the Kano model was further adopted.

Results

Among the 237 COPD patients, 75.1% of COPD patients were willing to participate in PR interventions, while only 62.9% of the investigated patients had heard of PR interventions. Over 90% of patients believed that the cost of PR services and the ratio of medical insurance reimbursement were potential obstacles hindering them from accepting PR services. The multiple linear regression analysis indicated that the PR skills of medical staff, knowledge promotion and public education levels of PR in the community, patients’ transportation concerns and degree of support from family and friends were significantly associated with willingness of participation in PR interventions. By using the Kano model, the top 9 most-requisite PR services (i.e., one-dimensional qualities) were identified from patients’ point of view, which are mainly diet guidance, education interventions, psychological interventions and lower limb exercise interventions. Subgroup analysis also revealed that patients’ demographics, such as breathlessness level, age, education and income levels, could influence their choice of priorities for PR services, especially services related to exercise interventions, respiratory muscle training, oxygen therapy and expectoration.

Conclusions

This study suggested that PR-related knowledge education among patients and their family, as well as providing basic package of PR services with the most-requisite PR items to COPD patients, were considerable approaches to promote PR attendance in the future.

Metabolic dysfunction‐associated fatty liver disease in the elderly with diabetic foot ulcers: A longitudinal cohort study

Abstract

This study aimed to explore the association between metabolic-associated fatty liver disease (MAFLD) and ulcer recurrence risk in patients with diabetic foot ulcers (DFUs) through an ambispective longitudinal cohort. From December 2013 to December 2022, a total of 482 inpatients with DFUs (PEDIS grade 3 and above with a severe infection) were eligible for inclusion in this study. This was an ambispective longitudinal cohort study. All participants were followed up every 6 months for 9 years with a median of 36 months. According to whether having MAFLD or not, all subjects were placed into two groups: non-MAFLD (n = 351) and MAFLD (n = 131). The association between MAFLD and ulcer recurrence in patients with DFUs was then evaluated through multivariate Cox regression analysis, stratified analyses and Kaplan–Meier survival analysis. Throughout the follow-up period, out of 482 subjects with DFUs, 68 had ulcer recurrence (14.1%). Three Cox regression models were established for data analyses. In the model I (unadjusted), MAFLD was significantly associated with the ulcer recurrence rate in patients with DFUs (HR = 1.79; 95% CI = 1.097–2.92; p = 0.02). Model II (adjusted model I with gender and age) (HR = 1.781; 95% CI = 1.09–2.912; p = 0.021) and model III (adjusted model II with CVD, duration of diabetes and Cr.) (HR = 1.743; 95% CI = 1.065–2.855; p = 0.027) also showed that MAFLD was significantly related to the ulcer recurrence risk in patients with DFUs, respectively. Stratified analysis indicated that subjects aged ≥60 had a greater risk of ulcer recurrence in MAFLD than in non-MAFLD (HR = 2.31; 95% CI = 1.268–4.206; p = 0.006). Kaplan–Meier survival curve analysis showed that ulcer recurrence rate had a significant association with MAFLD (log-rank, p = 0.018). This study indicated a close association between ulcer recurrence risk and MAFLD in patients with DFUs, especially in the elderly (aged ≥60). Therefore, special attention should be paid to the elderly with both DFUs and MAFLD because they have a higher ulcer recurrence rate than other general populations in routine clinical practice.

Assessing Mailuoning injection in wound healing and thrombophlebitis management: A rat model study

Abstract

Thrombophlebitis is the inflammatory condition characterized by obstruction of one or more vessels, commonly in the legs, due to the formation of blood clots. It has been reported that traditional Chinese medicine, including Mailuoning injection, is advantageous for treating inflammatory and blood disorders. This research assessed the therapeutic efficacy of Mailuoning injection in the treatment of thrombophlebitis in rodents, as well as investigated its impact on fibrinolysis, inflammation, and coagulation. An experimental setup for thrombophlebitis was established in rodents via modified ligation technique. Five groups comprised the animals: sham operation group, model group, and three Mailuoning treatment groups (low, medium, and high dosages). The pain response, edema, coagulation parameters (PT, APTT, TT, FIB), serum inflammatory markers (IL-6, TNF-α, CRP), and expression levels of endothelial markers (ICAM-1, VCAM-1, NF-κB) were evaluated. Blood flow and vascular function were further assessed by measuring hemorheological parameters and the concentrations of TXB2, ET, and 6-k-PGF1α. In contrast to the sham group, model group demonstrated statistically significant increases in endothelial expression levels, coagulation latencies, and inflammatory markers (p < 0.05). The administration of mailing, specifically at high and medium dosages, resulted in a substantial reduction in inflammatory markers, enhancement of coagulation parameters, suppression of ICAM-1 and VCAM-1 expression, and restoration of hemorheological measurements to baseline (p < 0.05). Significantly higher concentrations of 6-k-PGF1α and lower levels of TXB2 and ET were observed in high-dose group, suggesting that pro- and anti-thrombotic factors were restored to equilibrium. Utilization of Mailuoning injection in rat model of thrombophlebitis exhibited significant therapeutic impact. This effect was manifested through pain alleviation, diminished inflammation, enhanced blood viscosity and facilitation of fibrinolysis. The study indicated that Mailuoning injection may serve as a viable therapeutic option for thrombophlebitis, potentially aiding in the improvement of wound healing by virtue of its anti-inflammatory and blood flow-enhancing characteristics.

The efficacy of electroacupuncture in among early diabetic patients with lower limb arteriosclerotic wounds

Abstract

Diabetic foot ulcers are the prevalent complication of diabetes mellitus, frequently culminating in arteriosclerosis of the lower extremities and consequent development of chronic wounds. The effectiveness of electroacupuncture (EA) as therapeutic intervention for promoting wound healing in this particular group of patients has been comprehensively assessed in this study. A randomized controlled trial involving 380 early diabetic patients with arteriosclerotic lesions of the lower limbs was conducted. Standard wound care plus EA was administered to the treatment group, while standard wound care alone was administered to the control group. The principal outcome assessed was the reduction in lesion size following the 8-week treatment period. Pain scores, recuperation time, and quality of life (QoL) evaluations constituted secondary outcomes. In comparison to the control group, the treatment group exhibited a significantly greater reduction in wound size (p < 0.05). The treatment group exhibited significantly reduced pain scores and significantly higher QoL scores (p < 0.05). The duration of recovery did not vary substantially among the groups (p > 0.05). Electroacupuncture thus appeared to be an effective adjunctive treatment for early diabetic patients with lower limb arteriosclerotic lesions, promoting pain relief and quality of life. Additional investigation is necessary to validate these results and delve into the underlying mechanisms of action.

Experimental study on the treatment of AMD by SRB immobilized particles containing “active iron” system

by Wenbo An, Xuechun Hu, He Chen, Qiqi Wang, Yonglin Zheng, Jiahui Wang, Junzhen Di

The inhibition and toxicity of high acidity and heavy metals on sulfate-reducing bacteria in acid mine drainage (AMD) were targeted. Highly active SRB immobilized particles were prepared using SRB, warm sticker wastes (iron powders), corncobs, and Maifan stones as the main matrix materials, employing microbial immobilization technology. The repair ability and reusability of highly active immobilized particles for AMD were explored. The results indicate that the adaptability of immobilized particles to AMD varied under different initial conditions, such as pH, Mn2+, and SO42-. The adsorption process of immobilized particles on Mn2+ follows the quasi-second-order kinetic model, suggesting that it involves both physical and chemical adsorption. The maximum adsorption capacity of immobilized particles for Mn2+ is 3.878 mg/g at a concentration of 2.0 mg/L and pH 6. On the other hand, the reduction process of immobilized particles on SO42- adheres to the first-order reaction kinetics, indicating that the reduction of SO42- is primarily driven by the dissimilation reduction of SRB. The maximum reduction rate of SO42- by immobilized particles is 94.23% at a concentration of 800 mg/L and pH 6. A layered structure with a flocculent appearance formed on the surface of the immobilized particles. The structure’s characteristics were found to be consistent with sulfate green rust (FeII4FeIII2(OH)12SO4·8H2O). The chemisorption, ion exchange, dissimilation reduction, and surface complexation occurring between the matrices in the immobilized particles can enhance the alkalinity of AMD and decrease the concentration of heavy metals and sulfates. These results are expected to offer novel insights and materials for the treatment of AMD using biological immobilization technology, as well as improve our understanding of the mechanisms behind biological and abiotic enhanced synergistic decontamination.

Causal relationship from heart failure to kidney function and CKD: A bidirectional two-sample mendelian randomization study

by Junyu Zhang, Zhixi Hu, Yuquan Tan, Jiahao Ye

Background

Heart Failure (HF) is a widespread condition that affects millions of people, and it is caused by issues with the heart and blood vessels. Even though we know hypertension, coronary artery disease, obesity, diabetes, and genetics can increase the risk of HF and Chronic Kidney Disease (CKD), the exact cause of these conditions remains a mystery. To bridge this gap, we adopted Mendelian Randomization (MR), which relies on genetic variants as proxies.

Methods

We used data from European populations for our Bidirectional Two-Sample MR Study, which included 930,014 controls and 47,309 cases of HF from the HERMES consortium, as well as 736,396 controls and 51,256 cases of CKD. We also employed several MR variations, including MR-Egger, Inverse Variance Weighted (IVW), and Weighted Median Estimator (WME), to guarantee the results were accurate and comprehensive.).

Results

In this study, the MR analysis found that individuals with a genetic predisposition for HF have an elevated risk of CKD. Our study revealed a significant association between the genetic prediction of HF and the risk of CKD, as evidenced by the IVW method [with an odds ratio (OR) of 1.12 (95% CI, 1.03–1.21), p = 0.009] and the WME [with an OR of 1.14 (95% CI, 1.03–1.26), p = 0.008]. This causal relationship remained robust even after conducting MR analysis while adjusting for the effects of diabetes and hypertension, yielding ORs of 1.13 (IVW:95% CI, 1.03–1.23), 1.12 (MR-Egger: 95% CI, 0.85–1.48), and 1.15 (WME:95% CI, 1.04–1.27) (p = 0.008). However, in the reverse analysis aiming to explore CKD and renal function as exposures and HF as the outcome, we did not observe a statistically significant causal link between CKD and HF.

Conclusion

Our study demonstrates the significance of HF in CKD progression, thus having meaningful implications for treatment and the potential for discovering new therapies. To better understand the relationship between HF and CKD, we need to conduct research in a variety of populations.

Rationale and design of a comparison of angiography-derived fractional flow reserve-guided and intravascular ultrasound-guided intervention strategy for clinical outcomes in patients with coronary artery disease: a randomised controlled trial (FLAVOUR II)

Por: Zhang · J. · Hu · X. · Jiang · J. · Lu · D. · Guo · L. · Peng · X. · Pan · Y. · He · W. · Li · J. · Zhou · H. · Huang · J. · Jiang · F. · Pu · J. · Cheng · Z. · Yang · B. · Ma · J. · Chen · P. · Liu · Q. · Song · D. · Lu · L. · Li · S. · Fan · Y. · Meng · Z. · Tang · L. · Shin · E.-S. · Tu · S. · Koo · B.-
Introduction

Percutaneous coronary intervention (PCI) guided by coronary angiography-derived fractional flow reserve (FFR) or intravascular ultrasound (IVUS) has shown improved clinical outcomes compared with angiography-only-guided PCI. In patients with intermediate stenoses, FFR resulted in fewer coronary interventions and was non-inferior to IVUS with respect to clinical outcomes. However, whether this finding can be applied to angiography-derived FFR in significant coronary artery disease (CAD) remains unclear.

Method and analysis

The comparison of angiography-derived FFR-guided and IVUS-guided intervention strategies for clinical outcomes in patients with coronary artery disease (FLAVOUR II) trial is a multicentre, prospective, randomised controlled trial. A total of 1872 patients with angiographically significant CAD (stenoses of at least 50% as estimated visually through angiography) in a major epicardial coronary artery will be randomised 1:1 to receive either angiography-derived FFR-guided or IVUS-guided PCI. Patients will be treated with second-generation drug-eluting stent according to the predefined criteria for revascularisation: angiography-derived FFR≤0.8 and minimal lumen area (MLA)≤3 mm2 or 3 mm22 and plaque burden>70%. The primary endpoint is a composite of all-cause death, myocardial infarction and revascularisation at 12 months after randomisation. We will test the non-inferiority of the angiography-derived FFR-guided strategy compared with the IVUS-guided decision for PCI and the stent optimisation strategy.

The FLAVOUR II trial will provide new insights into optimal evaluation and treatment strategies for patients with CAD.

Ethics and dissemination

FLAVOUR II was approved by the institutional review board at each participating site (The Second Affiliated Hospital of Zhejiang University School of Medicine Approval No: 2020LSYD410) and will be conducted in line with the Declaration of Helsinki. Informed consent would be obtained from each patient before their participation. The study results will be submitted to a scientific journal.

Trial registration number

NCT04397211.

Recent advances on 3D‐bioprinted gelatin methacrylate hydrogels for tissue engineering in wound healing: A review of current applications and future prospects

Abstract

Advancements in 3D bioprinting, particularly the use of gelatin methacrylate (GelMA) hydrogels, are ushering in a transformative era in regenerative medicine and tissue engineering. This review highlights the pivotal role of GelMA hydrogels in wound healing and skin regeneration. Its biocompatibility, tunable mechanical properties and support for cellular proliferation make it a promising candidate for bioactive dressings and scaffolds. Challenges remain in optimizing GelMA hydrogels for clinical use, including scalability of 3D bioprinting techniques, durability under physiological conditions and the development of advanced bioinks. The review covers GelMA's applications from enhancing wound dressings, promoting angiogenesis and facilitating tissue regeneration to addressing microbial infections and diabetic wound healing. Preclinical studies underscore GelMA's potential in tissue healing and the need for further research for real-world applications. The future of GelMA hydrogels lies in overcoming these challenges through multidisciplinary collaboration, advancing manufacturing techniques and embracing personalized medicine paradigms.

Relationship between mental health, sleep status and screen time among university students during the COVID-19 pandemic: a cross-sectional study

Por: Wang · W. · Jiang · J. · Qi · L. · Zhao · F. · Wu · J. · Zhu · X. · Wang · B. · Hong · X.
Objective

On 20 July 2021, after the outbreak of COVID-19 at Nanjing Lukou International Airport, several universities started closed management and online teaching. This had a large impact on students’ daily life and study, which may lead to mental health problems. The purpose of this study is to study the effect of screen time on mental health status of university students and the possible mediating effect of sleep status.

Methods

This was a cross-sectional study. A web-based questionnaire survey was employed that included demographic characteristics, sleep status and mental health status (depression, anxiety and loneliness). The Pittsburgh Sleep Quality Index scale was used to assess sleep status, while the Centre for Epidemiologic Studies Depression (CES-D) scale, Generalised Anxiety Disorder-7 (GAD-7) scale and Emotional versus Social Loneliness Scale (ESLS) were used to assess depression, anxiety and loneliness, respectively. Linear and logistic regression models were developed and adjusted for confounding factors, and finally the mediating effects were tested using the Karlson-Holm-Breen method.

Results

Finally, 1070 valid questionnaires were included. Among these, 604 (56.45%) indicated depressive symptoms (CES-D score ≥16) and 902 (84.30%) indicated anxiety symptoms (GAD-7 score ≥10). The mean ESLS score (for loneliness) was 26.51±6.64. The relationship between screen time and depressive symptoms (OR 1.118, 95% CI 1.072 to 1.166) and anxiety symptoms (OR 1.079, 95% CI 1.023 to 1.138) remained significant after adjusting for confounding factors. Meanwhile, sleep status plays an intermediary role in screen time and mental health status (depression and anxiety) and accounts for 13.73% and 19.68% of the total effects, respectively. We did not find a significant association between screen time and loneliness.

Conclusion

During the outbreak of COVID-19, screen time is inevitably prolonged among university students. There is a relationship between mental health and screen time, and sleep status plays a mediating role.

Virtual reality as an adjunct to pulmonary rehabilitation of patients with chronic obstructive pulmonary disease: a protocol for systematic review and meta-analysis

Por: Li · Y. · Jiang · H. · Lyu · Z.
Introduction

Chronic obstructive pulmonary disease (COPD) is a prevalent chronic lung disease characterised by persistent and progressive airflow obstruction resulting from tracheal and/or alveolar lesions. Patients afflicted with COPD endure a poor quality of life primarily due to the symptoms of the disease. Pulmonary rehabilitation (PR) constitutes a core component of the comprehensive management of individuals dealing with COPD. Nevertheless, suboptimal adherence and completion rates are the chief impediments associated with PR. Virtual reality (VR) is emerging as a promising approach to support patients with COPD in their PR journey. Currently, no comprehensive systematic review has evaluated the impact of VR as a PR adjunct in patients with COPD. We aimed to investigate and summarise the evidence from recent studies related to the effect of VR as an adjunct to PR in COPD cases.

Methods and analysis

We will conduct a comprehensive search of databases, including Web of Science, CINAHL, PubMed, Embase, Cochrane Central Register of Controlled Trials and ClinicalTrials.gov, from their inception up to May 2023 to identify randomised controlled trials examining VR as an adjunct to PR in patients with COPD, with no restrictions on publication status or language. Our primary outcome measure will be the 6-min walk test. Two independent researchers will screen the literature for suitable articles for inclusion in this meta-analysis. Data collection and assessment of bias risk will be performed. This meta-analysis is intended to furnish data on each outcome as sufficient data become available. Heterogeneity will be assessed using the 2 test and I2 statistics. The current review will adhere to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.

Ethics and dissemination

Ethical approval is waived due to the retrospective nature of this study. Furthermore, the findings will be disseminated through peer-reviewed journals.

PROSPERO registration number

CRD42022374736.

Effect of percutaneous cerebral oximetry-guided anaesthetic management on postoperative delirium in older adults undergoing off-pump coronary artery bypass grafting: study protocol for a single-centre prospective randomised controlled trial in a tertiary

Por: Tian · L. · Wang · H. · Jia · Y. · Jin · L. · Zhou · C. · Zhou · H. · Yuan · S.
Introduction

Postoperative delirium is a prominent and clinically important complication in older adults after coronary artery bypass grafting (CABG) surgery, resulting in prolonged hospital stay, long-term cognitive impairment and increased morbidity and mortality. Many studies have shown that cerebral desaturation is associated with increased risk of postoperative delirium during on-pump cardiac surgery. However, few studies have focused on the effect of optimising regional cerebral oxygen saturation (rSO2) on postoperative delirium during off-pump CABG. The purpose of this study is to investigate whether intraoperative anaesthetic management based on percutaneous cerebral oximetry monitoring decreases the incidence of postoperative delirium in older adults undergoing off-pump CABG.

Methods

This single-centre randomised controlled trial will randomly assign 200 patients to the intervention group or the control group at a ratio of 1:1. The patients in the intervention group will be observed by percutaneous cerebral oximetry monitoring that the desaturation (a drop of more than 20% from baseline value or rSO2 less than 55% for >60 consecutive seconds at either probe) during the procedure triggered the intervention strategies, while the cerebral oximetry data of the control group will be hidden from the clinical team and patients will be anaesthetised by the usual anaesthetic management. The primary outcome will be the incidence of postoperative delirium during the first 7 days after off-pump CABG. Delirium will be comprehensively evaluated by the combination of the Richmond Agitation Sedation Scale and the Confusion Assessment Method for the intensive care unit. The secondary outcomes will include the incidence of postoperative acute kidney injury and myocardial infarction during the hospital stay, as well as the intensive care unit and hospital length of stay.

Ethics and dissemination

This study was approved by the Ethics Committee of the Chinese Academy of Medical Sciences, Fuwai Hospital (No 2022–1824). Written informed consent will be obtained from each patient or their legal representatives before enrolment. The results of this trial will be published in an international peer-reviewed scientific journal.

Trial registration number

ChiCTR2300068537.

Effects of non-invasive brain stimulation over supplementary motor area in people with Parkinsons disease: a protocol for a systematic review and meta-analysis of randomised controlled trials

Por: Wei · Y. · Ye · S. · Jiang · H. · Chen · Y. · Qiu · Y. · Zhang · L. · Ma · R. · Gao · Q.
Introduction

Individuals with Parkinson’s disease (PD) often experience initial hesitation, slowness of movements, decreased balance and impaired standing ability, which can significantly impact their independence. Transcranial magnetic stimulation and transcranial direct current stimulation are two widely used and promising non-invasive brain stimulation (NIBS) modalities for treating PD. The supplementary motor area (SMA), associated with motor behaviour and processing, has received increasing attention as a potential stimulation target to alleviate PD-related symptoms. However, the data on NIBS over SMA in PD individuals are inconsistent and has not been synthesised. In this article, we will review the evidence for NIBS over SMA in PD individuals and evaluate its efficacy in improving PD function.

Method and analysis

Randomised controlled clinical trials comparing the effects of NIBS and sham stimulation on motor function, activities of daily living and participation for people with PD will be included. A detailed computer-aided search of the literature will be performed from inception to February 2023 in the following databases: PubMed, EMBASE, Physiotherapy Evidence Database (PEDro), Web of Science (WOS) and The Chinese National Knowledge Infrastructure (CNKI). Two independent reviewers will screen articles for relevance and methodological validity. The PEDro scale will be used to evaluate the risk of bias of selected studies. Data from included studies will be extracted by two independent reviewers through a customised, preset data extraction sheet.

Ethics and dissemination

Ethical approval is not required for this systematic review. The study’s findings will be presented at scientific meetings and published in peer-reviewed journals.

PROSPERO registration number

CRD42023399945.

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