Journal Of Cardiovascular Emergencies最新文献

{"title":"New Perspectives in the Treatment of Acute and Chronic Heart Failure with Reduced Ejection Fraction","authors":"C. Stătescu, R. Sascău, A. Clément, L. Anghel","doi":"10.2478/jce-2021-0017","DOIUrl":"https://doi.org/10.2478/jce-2021-0017","url":null,"abstract":"ABSTRACT Acute and chronic heart failure with reduced ejection fraction (HFrEF) is a major public health problem, studies showing a 25% survival rate at 5 years after hospitalization. If left untreated, it is a common and potentially fatal disease. In recent years, the medical and device therapies of patients with HFrEF have significantly improved. The aim of our review is to provide an evidence-based update on new therapeutic strategies in acute and chronic settings, to prevent hospitalization and death in patients with HFrEF. We performed a systematic literature search on PubMed, EMBASE, and the Cochrane Database of Systemic Reviews, and we included a number of 23 randomized controlled trials published in the last 30 years. The benefit of beta-blockers and renin-angiotensin-aldosterone system inhibitors in patients with HFrEF is well known. Recent developments, such as sodium-glucose cotransporter 2 inhibitors, vericiguat, transcatheter mitral valve repair, wireless pulmonary artery pressure monitor and cardiac contractility modulation, have also proven effective in improving prognosis. In addition, other new therapeutic agents showed encouraging results, but they are currently being studied. The implementation of personalized disease management programs that directly target the cause of HFrEF is crucial in order to improve prognosis and quality of life for these patients.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"10 1","pages":"88 - 99"},"PeriodicalIF":0.4,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75810889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Possible Option for Treatment of Severe Congestive Heart Failure Under Mechanical Ventilation Using Tolvaptan via Nasogastric Tube: A Single-Center Analysis","authors":"M. Takeda, N. Shiba","doi":"10.2478/jce-2021-0016","DOIUrl":"https://doi.org/10.2478/jce-2021-0016","url":null,"abstract":"ABSTRACT Background: The oral vasopressin-2 receptor antagonist tolvaptan causes aquaresis, and its effect on heart failure is proven. However, it is not recommended in patients who are unable to appropriately respond to thirst because of possible severe hypernatremia. Aim: To assess the safety and efficacy of tolvaptan treatment via nasogastric tube in patients who are unable to respond to thirst by fluid ingestion. Methods: We analyzed 70 consecutive patients with severe congestive heart failure (CHF) who were resistant to loop diuretics and treated with tolvaptan. From the 70 patients, 12 required endotracheal intubation under sedation (Group Tube; GT) and 58 did not (Group Oral; GO). We administered tolvaptan orally in GO; however, in GT, we had to administer tolvaptan via nasogastric tube to achieve pulmonary decongestion quickly. In GT, serum sodium level was monitored closely, and intravenous fluid infusion volume was controlled in the intensive care unit (ICU). Outcomes, including safety and efficacy parameters, were evaluated. Results: In both groups, tolvaptan treatment did not develop a significant rise in serum sodium level compared with baseline, and the incidence of worsening renal failure was comparable, despite greater net fluid loss and higher doses of loop diuretics used in patients of GT compared to GO. In GT, all patients achieved pulmonary decongestion and were weaned from mechanical ventilation. Conclusions: In sedated patients with severe CHF who are unable to respond to thirst by fluid ingestion, tolvaptan can be used without clinically significant hypernatremia under close monitoring in the ICU.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"20 1","pages":"107 - 115"},"PeriodicalIF":0.4,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76352760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Late Rupture of a Thrombosed Aortic Abdominal Aneurysm – a Case Report","authors":"Emil-Marian Arbănași, E. Russu, A. Mureşan, Eliza-Mihaela Arbănași","doi":"10.2478/jce-2021-0012","DOIUrl":"https://doi.org/10.2478/jce-2021-0012","url":null,"abstract":"Abstract Introduction: Severe back pain caused by a thrombosed and ruptured aortic abdominal aneurysm can imitate a lumbar disc herniation. Case presentation: We present the case of a 72-year-old diabetic patient with chronic atrial fibrillation, who had been experiencing high-intensity low back pain and claudication in the last year prior to his presentation. After experiencing a minor trauma, a lumbar MRI examination was performed, which revealed a retroperitoneal tumoral mass compressing and eroding the L2–L4 vertebral bodies. Computed tomography angiography showed an infrarenal aortic aneurysm (3.374 × 3.765 cm) which appeared to have ruptured and thrombosed. The question arising was when did the rupture occur, how massive was the damage, and how suitable for reconstruction was the aortic wall below the origin of the renal arteries. An open repair was scheduled and performed. The intraoperative finding was ruptured aneurysm of the thrombosed infra-abdominal aorta. The thrombosis extended along the common iliac and external iliac branches. We performed an aortobifemoral bypass using a 16 × 8 mm Dacron graft, clamping the aorta above the origin of the renal arteries. Conclusion: The unintentional diagnosis, due to a minor fall, was overall a fortunate event for this patient. Aortic aneurysms may present with lumbar pain that can be mistakenly interpreted as a spinal issue.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"100 1","pages":"84 - 87"},"PeriodicalIF":0.4,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75659531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomarkers of Systemic Versus Local Inflammation During the Acute Phase of Myocardial Infarction, as Predictors of Post-infarction Heart Failure","authors":"B. Mátyás, Ș. Polexa, I. Benedek, Andreea-Luciana Buicu, T. Benedek","doi":"10.2478/jce-2021-0014","DOIUrl":"https://doi.org/10.2478/jce-2021-0014","url":null,"abstract":"Abstract Background: The aim of this study was to investigate the correlation between serum biomarkers of left ventricular dysfunction and systemic inflammation in the first days after the acute episode, and to investigate their role for early identification of patients at high risk for post-infarction heart failure. Materials and methods: In total, 123 subjects admitted to the Intensive Cardiovascular Care Unit of the Cardiology Clinic of the Târgu Mureș County Clinical Emergency Hospital, Romania, with acute myocardial infarction were retrospectively analyzed in this study. Based on the level of NT-proBNP, the study population was divided into 2 groups: Group 1 (n = 92), with NT-proBNP <3,000 pg/mL, and Group 2 (n = 31), with NT-proBNP >3,000 pg/mL. Results: Biomarkers reflecting systemic inflammation presented significantly higher values in patients with elevated NT-proBNP (hs-CRP – 12.3 ± 8.9 mg/L vs. 3.6 ± 6.7 mg/L, p <0.0001, and interleukin 6 – 27.6 ± 30.7 pg/mL vs. 8.6 ± 6.2 pg/mL, p <0.0001). However, cell adhesion molecules VCAM and ICAM were not significantly different between the groups. Patients in Group 2 presented significantly higher rates of major cardiovascular events and rehospitalizations in the first year after the acute coronary event, with 13.33% event rate for patients in Group 2 compared to 8.7% in Group 1 (p <0.05). Conclusions: Serum biomarkers of ventricular dysfunction are strongly associated with systemic inflammation and ventricular impairment in the immediate phase after an acute myocardial infarction. Systemic inflammation has a higher impact on the clinical outcomes and progression to heart failure than the local coronary inflammation expressed by cell adhesion molecules.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"13 1","pages":"70 - 76"},"PeriodicalIF":0.4,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78407889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Increased QT Dispersion and High Risk of Ventricular Arrhythmias is Associated with Hyperuricemia in Individuals with Normal Renal Function","authors":"B. Huddam, A. Alp, Dilek Gibyeli Genek, A. Azak, V. Karakuş","doi":"10.2478/jce-2021-0011","DOIUrl":"https://doi.org/10.2478/jce-2021-0011","url":null,"abstract":"Abstract Background and aim: Uric acid elevation has been shown to be an important risk factor for cardiovascular and cerebrobascular disease. QT dispersion (QTd) is a parameter that shows the heterogeneity of ventricular repolarization and can be calculated noninvasively from surface electrocardiography. Increased QTd has been associated with severe arrhythmia and risk of sudden death in many patients and disease groups. In this context, we aimed to investigate the effect of uric acid levels on QTd and the effects of decrease in uric acid levels on QTd. Methods: A total of 225 patients with normal renal function were included in the study; 133 of these patients were hyperuricemic (>7 mg/dL), and the remaining 72 patients were normouricemic (Group 1). The hyperuricemic patients were randomly divided into 2 groups, one group (n = 67) was given placebo (Group 2) for 4 months, and the remaining 66 patients were given allopurinol 300 mg/day (Group 3). Results: Hyperuricemic patients had higher hsCRP and QTd and lower eGFR values compared to the normouricemic control group. After 4 months of treatment, 66 patients treated with allopurinol showed a significant decrease in serum uric acid, systolic and diastolic blood pressure, and hsCRP levels, and a significant increase in eGFR. Although the QTd values in the treatment group did not decrease to the same levels as in the normouricemic control group, a statistically significant decrease was found compared to their baseline values. In hyperuricemic control and normouricemic control patients, there were no differences in the levels of uric acid, hsCRP, eGFR, systolic and diastolic blood pressure, and QTd values compared to baseline values. Conclusions: There was a significant association between elevated serum uric acid and QTd, as well as with inflammatory biomarkers. Also, patients who had received hypouricemic therapy during the follow-up period presented a significant decrease in inflammatory markers as well as QTd. This indicates the beneficial effects of decreasing uric acid levels in decreasing the risk for future major adverse events related to ventricular arrhythmias.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"50 1","pages":"77 - 83"},"PeriodicalIF":0.4,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80872877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship between ECG Findings and Serum Biomarkers in COVID-19 Patients","authors":"Gökhan Perinçek, M. Karakayalı, S. Avci","doi":"10.2478/jce-2021-0013","DOIUrl":"https://doi.org/10.2478/jce-2021-0013","url":null,"abstract":"Abstract Background and aim: The aim of this study was to evaluate the relationship between ECG findings and blood parameters indicative of inflammation and myocardial injury in COVID-19 patients. Methods: The study included 159 females and 194 males. Demographics, ECG findings (axis, rhythm, branch block, ST- and T-wave changes, premature ventricular contractions, early repolarization, S1Q3T3, fragmented QRS [fQRS], rate, PR, QRS, QT interval, QTc, P-wave dispersion) and albumin, D-dimer, ferritin, pro-BNP, procalcitonin, protein, troponin T, neutrophil-to-lymphocyte ratio (NLR), C-reactive protein/albumin ratio (CAR) were recorded. Results: In the study, 45% of the cases were female and 55% were male. The mean age of the included patients was 45.7 ± 24.4 years. The most frequent comorbidities were chronic obstructive pulmonary disease (COPD) and hypertension (HT) in both groups. The incidence of fQRS on the 1st day was significantly higher in patients with negative COVID-19 test (23% for positive RT-PCR versus 35.6% for negative RT-PCR, p = 0.016). QTc values on the 3rd and 5th day were significantly higher in patients with negative RT-PCR (p = 0.045 and p = 0.042, respectively). Albumin and procalcitonin were significantly higher in patients with positive COVID-19 test results (p = 0.018 and p <0.001, respectively). Patients with fragmented QRS presented significantly lower serum albumin (40.62 ± 4.73 g/L vs. 42.92 ± 3.72 g/L, p = 0.01), and protein levels (p = 0.02), as well as lower lymphocyte count, and significantly higher levels of C-reactive protein (47.01 ± 65.01 mg/L vs. 24.55 ± 44.17 mg/L, p = 0.001), D-dimer (p = 0.009), neutrophil count, pro-BNP (p = 0.004), troponin T (p <0.001), NRL and CAR (1.28 ± 1.83 versus 0.6 ± 1.11, p <0.001). Conclusion: Patients with COVID-19 infection presented significantly higher levels of C-reactive protein, D-dimer, neutrophil, pro-BNP, procalcitonin, troponin T, NLR, and CAR, and significantly lower levels of albumin, lymphocyte count, and serum proteins, indicating the level of inflammation and its relationship with myocardial injury. Further follow-up studies are required, on larger patient sets, for the development of risk prediction tools in COVID-19 patients.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"15 1","pages":"64 - 69"},"PeriodicalIF":0.4,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74556605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current Recommendations for the Management of Cancer-Associated Venous Thromboembolism","authors":"K. Makó","doi":"10.2478/jce-2021-0009","DOIUrl":"https://doi.org/10.2478/jce-2021-0009","url":null,"abstract":"Abstract Cancer-associated thrombosis (CAT) is a major cause of death in oncological patients. The mechanisms of thrombogenesis in cancer patients are not fully established, and it seems to be multifactorial in origin. Also, several risk factors for venous thromboembolism (VTE) are present in these patients such as tumor site, stage, histology of cancer, chemotherapy, surgery, and immobilization. Anticoagulant treatment in CAT is challenging because of high bleeding risk during treatment and recurrence of VTE. Current major guidelines recommend low molecular weight heparins (LMWHs) for early and long-term treatment of VTE in cancer patients. In the past years, direct oral anticoagulants (DOACs) are recommended as potential treatment option for VTE and have recently been proposed as a new option for treating CAT. This manuscript will give a short overview of risk factors involved in the development of CAT and a summary on the recent recommendations and guidelines for treatment of VTE in patients with malignancies, discussing also some special clinical situations (e.g. renal impairment, catheter-related thrombosis, and thrombocytopenia).","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"43 1","pages":"27 - 38"},"PeriodicalIF":0.4,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81190677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endovascular Aortic Aneurysm Repair during the Early Days of the COVID-19 Outbreak","authors":"Kemal Karaarslan, A. Kunt, Burcin Abud","doi":"10.2478/jce-2021-0007","DOIUrl":"https://doi.org/10.2478/jce-2021-0007","url":null,"abstract":"Abstract Introduction: We report the results of endovascular aortic repair (EVAR) in three patients during the COVID-19 pandemic. Materials and Methods: Three patients were diagnosed with abdominal aortic aneurysm. All three patients were male and aged 68 years. The diameter of the aneurysm was larger than 65 mm and was considered suitable for EVAR. Thorax tomography was performed to exclude SARS-CoV-2 infection before the procedure. Results: We performed EVAR under general anesthesia. “Priority Level” was based on the guideline of the American College of Surgeons. The procedure was conducted in the angiography laboratory by taking advanced precautions. Intensive care admission was avoided. The postoperative period was uneventful, and all patients were discharged without any condition associated with COVID-19. There were no mortality, rupture, secondary intervention, major adverse event, limb occlusion, and 60-day read-mission. Conclusions: During the pandemic, EVAR can be performed for symptomatic abdominal aortic aneurysm with a diameter of more than 65 mm. Thorax tomography is safe to exclude SARS-CoV-2 infection. However, tomographic angiography to monitor patients may be difficult during the pandemic.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"57 1","pages":"52 - 56"},"PeriodicalIF":0.4,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76914896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vitamin D Supplementation Replaced Catheter Ablation in a Patient with Frequent Premature Ventricular Contractions","authors":"G. Cismaru, D. Pop, D. Zdrenghea, R. Roșu","doi":"10.2478/jce-2021-0005","DOIUrl":"https://doi.org/10.2478/jce-2021-0005","url":null,"abstract":"Abstract A high premature ventricular contractions (PVC) burden can disturb the patient’s condition through fatigue during exercise or palpitations. Hence, researchers started to look for treatment options that decrease PVC burden without the side effects of antiarrhythmic drugs, and vitamin D could be a valuable solution and safe alternative to drugs or catheter ablation for high-burden PVCs. We present the case of a 24-year-old patient with high-burden PVC of >25,500/24 hours referred for urgent catheter ablation. Treatment with beta-blockers and calcium blockers did not reduce PVC burden. Under propafenone, there was a slight reduction in the number of PVCs to 21,200/24 hours, therefore the patient was referred for catheter ablation. As there was a vitamin D deficiency of 10.1 ng/mL, an attempt of vitamin D supplementation was done, with increase of vitamin D to 32.1 ng/mL and decrease of PVC burden to 9,600/24 hours. Further dietary supplementation increased 25-OH vitamin D to 50.2 ng/mL and decreased the PVC burden to 119/24 hours. Consequently, catheter ablation was canceled, and the patient remained free of antiarrhythmic drugs.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"78 1","pages":"57 - 61"},"PeriodicalIF":0.4,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90372591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Site-specific Phenotype of Atherosclerotic Lesions According to Their Location Within the Coronary Tree – a CCTA-based Study of Vulnerable Plaques","authors":"D. Opincariu, N. Raț, A. Mester, R. Hodaș, D. Cernica, D. Păsăroiu, M. Rațiu, M. Chițu, I. Kovács, I. Benedek, T. Benedek","doi":"10.2478/jce-2021-0010","DOIUrl":"https://doi.org/10.2478/jce-2021-0010","url":null,"abstract":"Abstract Background: The evaluation of site-specific phenotype according to the topographic location of atherosclerotic lesions within the coronary tree has not been studied so far. The present study is based on the premise that the location of coronary plaques can influence their composition and degree of vulnerability. Aim: To evaluate different phenotypes of vulnerable coronary plaques across the three major coronary arteries in terms of composition, morphology, and degree of vulnerability, in patients with chest pain and low-to-intermediate probability of coronary artery disease, using coronary computed tomography angiography (CCTA) and a complex plaque analysis. Material and methods: This was a cross-sectional study on 75 subjects undergoing CCTA for chest pain, who presented at least one vulnerable coronary plaque (VP), defined as the presence of ≥1 CT vulnerability marker (low attenuation plaque, napkin-ring sign, spotty calcifications, positive remodeling). The study included per plaque analysis of 90 vulnerable coronary lesions identified in various locations within the coronary tree as follows: n = 30 VPs in the left anterior descending artery (LAD), n = 30 VPs in the circumflex artery (CXA), and n = 30 VPs in the right coronary artery (RCA). Results: The RCA exhibited significantly longer VPs (p = 0.001), with the largest volume (p = 0.0007) compared to those arising from the LAD and CXA. Vulnerable plaques located in the LAD exhibited a significantly more calcified phenotype (calcified volume: LAD – 44.07 ± 63.90 mm3 vs. CXA – 12.40 ± 19.65 mm3 vs. RCA – 33.69 ± 34.38 mm3, p = 0.002). Plaques from the RCA presented a more non-calcified phenotype, with the largest non-calcified (p = 0.002), lipid rich (p = 0.0005), and fibrotic volumes (p = 0.003). Low-attenuation plaques were most frequent in the RCA (p = 0.0009), while the highest vulnerability degree was present in lesions located in the LAD, which presented the highest number of vulnerability markers per plaque (p = 0.01). Conclusions: Vulnerable plaques arising from the right coronary artery are longer, more vo-luminous and with larger lipid and non-calcified content, whereas those located in the left anterior descending artery present a higher volume of calcium, but also a higher degree of vulnerability. The least vulnerable lesions were present in the circumflex artery.","PeriodicalId":15210,"journal":{"name":"Journal Of Cardiovascular Emergencies","volume":"29 1","pages":"39 - 46"},"PeriodicalIF":0.4,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80510094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}