Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 20 de 140
Filter
1.
37th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2022 ; : 272-274, 2022.
Article in English | Scopus | ID: covidwho-2097627

ABSTRACT

Recently, COVID-19 has accelerated the non-contact culture. Many presentations, such as workshops and conferences, are conducted in an online and offline hybrid mode in a conference room. In presentations, a screen of the slide is particularly important. Therefore, we propose an algorithm that detects the screen in an image. Firstly, a screen region is extracted using a deep learning-based instance segmentation method. However, this extracted region has a noisy boundary. We designed an image processing algorithm composed of 7 main steps to solve this noise and detect the screen. To validate the proposed method, a real dataset was qualitatively evaluated, and the result images show that only meaningful screen regions in the test image can be extracted. © 2022 IEEE.

2.
Journal of Mechanical Engineering ; 10(Special Issue 1):263-276, 2021.
Article in English | Scopus | ID: covidwho-2092714

ABSTRACT

The limitations of the assistive devices for amputees and the prevention of Covid-19 spread have risen the need for a device that can be controlled without using hands. The availability of the internet of things allows data to be transferred between devices without a physical connection. This paper describes the integration of the Internet of things (IoT) and electroencephalogram (EEG) in controlling fan speed via intention. The controlling process includes EEG signals acquisition in real-time, the intention detection from the signal, the transmission of the fan speed to the cloud and the retrieval of the stored data from the cloud to change the fan speed accordingly via Wi-fi. The system could detect the intention of increasing and decreasing the fan speed with an accuracy of 95% and 75% respectively. The accuracy of detecting the intention from EEG signals is affected by the frame length and electrode duration on the scalp, Wi-fi strength and wireless connection stability. With the utilization of IoT and EEG in the whole system, the fan could be controlled from far without using hands which is suitable for amputees and at the same time, the transmission of Covid-19 through hands could be reduced © 2020 Faculty of Mechanical Engineering, Universiti Teknologi MARA (UiTM), Malaysia

4.
Transfusion ; 62(Supplement 2):202A, 2022.
Article in English | EMBASE | ID: covidwho-2088322

ABSTRACT

Background/Case Studies: To help recruit and retain donors, blood collectors often offer health screening tests, such as cholesterol and COVID-19 antibodies. Because most blood donors return to give, the opportunity to provide follow-up screening, education, or engagement for an abnormal result adds a longitudinal dimension to the role a blood center can play as a community health resource. Quantifying this value is important to help attract stronger public health partnerships and funding. Study Design/Methods: From August 1 to October 31, 2021, a total of 70,248 individual, allogeneic donors were screened for a panel of cardiovascular risks: hemoglobin A1c (a marker for glucose control/diabetes risk), blood pressure, and total cholesterol. Abnormal findings were defined as Hb A1c >= 5.7% (prediabetes);BP >= 130/80 (stage 1 hypertension);and total cholesterol > 200 mg/dL (borderline high). Donors were monitored for return rates at 3, 4, 5, and 6 months after the midpoint of the accrual period (Sept. 16, 2021). Individual donor demographics were associated with these screening results. Results/Findings: Overall, 47.3% of the donors returned after an averaged 6-month interval. Table 1 shows that for all screening measures, donors with elevated results returned in a higher proportion than those in the comparison group with reference range findings ("WNL"). Stratification by gender showed overall male returns were higher than female returns (51.7% vs. 43.2%). For both these subsets, return percentages rose for donors with elevated results in each screening measure (see Table 2). Conclusion(s): Blood donors with abnormal results on a battery of cardiovascular health screenings return to give at a high rate, with 49.6-54.6% drawn again during an averaged 6-month span. Gender cohort analyses widened this range to 44.2-59.7%. For all subsets, returns were much higher than for "control" donors without abnormalities. These findings show a significant opportunity for in-person, follow-up interventions subsequent to blood donor wellness screenings. This longitudinal, recontacting strength should be considered in designing donor-based community health studies.

6.
Proceedings of the 2021 Asia-Pacific International Symposium on Aerospace Technology (Apisat 2021), Vol 2 ; 913:599-617, 2023.
Article in English | Web of Science | ID: covidwho-2085303

ABSTRACT

The Electronic Navigation Research Institute and Korea Aerospace University have proposed an initial Free Route Airspace (FRA) concept for the Fukuoka and Incheon Flight Information Regions (FIR) to improve air traffic flows and air traffic management in northeast Asia. We are now working to elaborate the concept, quantify benefits, and identify implementation issues. This paper examines two air traffic flows in Fukuoka FIR: (1) Japanese domestic flights between the highest traffic city pairs, and (2) overflight traffic between Korea and North America across radar-controlled airspace. From an analysis of operations based on flight plan and radar data for 2019, prior to the COVID-19 pandemic, FRA design and implementation issues are considered. Our analysis and findings are expected to contribute to the planning of FRA implementation in Northeast Asia.

7.
Springer Series in Supply Chain Management ; 17:139-147, 2022.
Article in English | Scopus | ID: covidwho-2075185

ABSTRACT

Supply chain resilience and economic, environmental, and social sustainability challenges are highly vulnerable and uncertain. Under the unprecedented supply chain disruption caused by epidemics such as COVID-19, many organisations face new challenges of shifting situation, managing volatility of information, and coordinating supply chain structures. During the pandemic crisis, corporations are presented with an opportunity to reconsider their global supply chain management and accelerate their capabilities for the long-term sustainability in managing current and future challenges. Corporate leaders and supply chain managers have major tasks to reduce supply chain uncertainty and risks, while balancing supply chain resilience and sustainability performance. By addressing the key question ‘can supply chain resilience and sustainability help companies survive and recover for business sustainability and continuity?’, this chapter presents important solutions and opportunities for corporate leaders and supply chain managers. This paper also offers new insights on how supply chain resilience and sustainability help companies to manage complex interdependency and related risks in supply chain. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

8.
Hormone Research in Paediatrics ; 95(SUPPL 2):188-188, 2022.
Article in English | Web of Science | ID: covidwho-2068317
9.
American Journal of Transplantation ; 22(Supplement 3):660, 2022.
Article in English | EMBASE | ID: covidwho-2063476

ABSTRACT

Purpose: Kidney transplantation (KT) from coronavirus disease 2019 (COVID-19) positive donors has been avoided due to concerns for donor-derived transmission and possibility of the kidney being a viral reservoir. There is no long-term safety data, and sensitive molecular testing for SARS-CoV-2 in donor kidney is not routinely performed. We report a case of successful KT from a deceased donor who died from severe COVID-19 respiratory illness whose donor kidney and aorta were probed for virus using in situ hybridization (ISH) and quantitative reverse transcriptionpolymerase chain reaction (qRT-PCR). Method(s): A 30-year-old female was admitted to the hospital with severe COVID-19 pneumonia with a positive RT-PCR test for SARS-CoV-2 on nasopharyngeal swab. With clinical worsening, she was placed on extracorporeal membrane oxygenation, but developed hypoxic brain injury and progressed to brain death. Renal function was stable during her hospital course with serum creatinine concentration of 0.7 mg/dL. SARS-CoV-2 RT-PCR on bronchoalveolar lavage and nasopharyngeal samples tested again three days prior to donation was negative. A 55-year-old male recipient with an end-stage renal disease secondary to hypertension was transplanted with the left kidney from the above donor. The donor kidney was studied using pre-implantation surgical biopsy tissues to investigate the presence of SARS-CoV-2 RNA. Aorta tissue with the kidney was also studied given high expression of angiotensin-converting enzyme 2 receptors in vasculature. Result(s): ISH analyses did not show any positive signal for SARS-CoV-2 RNA in the donor kidney sample compared to a SARS-CoV-2 positive lung control. All samples tested by qRT-PCR were also negative for SARS-CoV-2. We found no evidence of SARS-CoV-2 mRNA in the donor kidney and aorta. The recipient has been free of COVID-19 related signs or symptoms and tested negative for SARSCoV- 2 by nasopharyngeal swab RT-PCR on days 20, 30, and 90 following KT. After an initial period of delayed graft function requiring hemodialysis, the recipient now has excellent renal recovery over 6 months following the transplant, and the most recent creatinine is 1.3 mg/dL. Conclusion(s): Taken together with recent observations of successful KT outcomes from mild or asymptomatic COVID-19 donors, we believe that the transmission risk of SARS-CoV-2 through KT is likely to be very low. Use of deceased donors who died after severe COVID-19 can be considered for KT. Larger scale studies are needed to confirm our findings.

10.
Investigative Ophthalmology and Visual Science ; 63(7):1713-F0031, 2022.
Article in English | EMBASE | ID: covidwho-2058568

ABSTRACT

Purpose : The COVID-19 lockdown resulted in appointment cancellations that affected the medical management and visual health of glaucoma patients. This study aimed to examine COVID-related factors leading to decreased patient perception of visual health. We surveyed glaucoma patients to examine the impact of COVID-related office changes on perceived visual health and level of concern with care. Methods : 65 patients presenting to an Albany outpatient glaucoma practice in June 2021 were orally surveyed prior to appointment. Survey consisted of Y/N questions and Likert Scale responses examining patients' perception of care and concern over condition management during the March 2020 lockdown period. Likert responses from 1 to 5 regarding difficulty scheduling appointments, knowledge of COVID-19, level of concern regarding condition management, and patient reported vision-related quality of life (VRQOL) were used to gauge perceived visual health and level of concern with care. Patients were grouped into one of two cohorts based on whether they reported an institutional appointment cancellation during lockdown, and Mann-Whitney U and Spearman Correlation analysis were used for statistical analysis of cohorts. Results : Patients with appointment cancellations during lockdown reported significantly greater concern regarding condition management and impacted VRQOL (p<0.05). On a Likert scale up to 5, the level of concern regarding VRQOL in the noncancellation group was lower (1.2 ± 0.4) compared to the cancellation group (1.8 ± 1.0). Concern regarding condition management was also lower in the noncancellation group (1.7 ± 0.6) versus the cancellation group (3.0 ± 1.1). There was no significant difference in how informed the two groups felt about COVID-19. Correlation analysis confirmed these trends and showed that increased perceived ease of obtaining appointments was positively correlated with increased patient perception of visual health, represented by impact on VRQOL. Conclusions : This study demonstrates that COVID-related appointment cancellations caused patient concerns over care to grow and perception of visual health to decrease. Patient-reported visual health and VRQOL may be directly related to the ease of obtaining appointments and maintaining communication with their ophthalmologist, in addition to the medical management of their condition.

11.
Innovation in Aging ; 5:255-255, 2021.
Article in English | Web of Science | ID: covidwho-2011829
12.
Journal of Clinical Oncology ; 40(16), 2022.
Article in English | EMBASE | ID: covidwho-2009536

ABSTRACT

Background: The COVID-19 pandemic has led to disruptions in cancer treatment delivery among breast cancer patients in the U.S. However, it is currently unknown whether racial/ethnic disparities exist in cancer treatment disruptions among patients with breast cancer and SARS-CoV-2 infection. Methods: We obtained data from the ASCO Survey on COVID-19 in Oncology Registry (March 2020-July 2021) describing breast cancer patients diagnosed with SARS-CoV-2 during their care treated at 46 practices across the US. Data included patient demographics, SARS-CoV-2 diagnosis and treatment, breast cancer characteristics, and modifications to cancer treatment plans. Breast cancer treatment delay or discontinuation (TDD) was defined as any treatment postponed more than two weeks from the originally scheduled date. We computed adjusted odds ratios (aOR) using multivariable logistic regression, accounting for non-independence of patients within hospitals to evaluate racial/ethnic disparities of TDD. Multivariable models were adjusted for age, sex, number of comorbidities, cancer extent, ECOG performance score, pandemic period based on case peaks (< 06/2020, 06-12/2020, 01-07/2021), and COVID-19 severity (death/hospitalization/ICU admission/mechanical ventilation). Results: Breast cancer patients (n = 804) with SARS-CoV-2 were mostly aged 50 years and above (75%) and urban residents (83%). The racial/ethnic makeup of the sample included: 13.3% non-Hispanic Black/African American (NH-Black), 11.7% Hispanic/Latinx, 4.9% American Indian/Alaskan Native (NH-AI/ AN), 4.6% NH-Asian, and 65% NH-White. At SARS-CoV-2 diagnosis, 736 patients (91%) were scheduled to receive drug-based therapy (78%), radiation therapy (8%), or surgery (6%), of whom 39% experienced TDD. Across treatment modalities, the most commonly reported TDD reason from the clinic perspective was the patient's COVID-19 disease (∼90%). Overall, NH-Black (62%), Hispanic/Latinx (44%), and NH-Asian (42%) adults with breast cancer and SARS-CoV-2 were more likely to experience TDD versus NH-White adults (34%) (p < 0.001). In multivariable analyses, NH-Black cancer patients were more likely to experience TDD compared to NH-White patients (aOR: 3.12, 95% CI: 1.96-5.47). The data suggest Hispanic/Latinx (aOR: 1.34, 95% CI: 0.78-2.30) breast cancer patients may also experience TDD, although not statistically significant. No association was observed among NH-Asian (aOR: 1.16, 95% CI: 0.50-2.73) or NH-AI/AN (aOR: 0.64, 95% CI: 0.28-1.52) breast cancer patients with TDD. Conclusions: Black or African American breast cancer patients are more likely to experience cancer care disruptions during the pandemic. Future research should evaluate the long-term impacts of care disruptions on breast cancer outcomes among minoritized US communities.

13.
Heart Lung and Circulation ; 31:S25, 2022.
Article in English | EMBASE | ID: covidwho-2004113

ABSTRACT

Background: Global COVID pandemic and lockdowns have affected the patterns of hospital presentations for non-COVID related illnesses. Apprehension and perceived risk of hospitalisation has been postulated to be a significant deterrent to presentation. This study aims to explore pandemic and lockdown related concerns with regards to hospital admission from a patient’s perspective. Method: A cross sectional study was undertaken in the form of inpatient questionnaire for patients admitted to coronary care unit and the cardiology ward during level 4 lockdown. Questionnaire included six questions designed to gather patient perception of the impact of lockdown on their hospital presentation. Results: Out of 91 patients who completed the questionnaire, 41 (45%) were >70 years old. Twenty (22%) patients answered that lockdown delayed or affected their decision to present to hospital. Within this cohort, there was a statistical difference between those aged 70 years and younger and over 70 years old (16/50 [32%] versus 4/41 [10%], p=0.011). Conclusion: Apprehension and concerns regarding the risk of COVID was prevalent in a significant proportion of patients and affected/delayed their decision to present to hospital. This may partly explain lower rates of presentation during the pandemic.

14.
Journal of General Internal Medicine ; 37:S318-S319, 2022.
Article in English | EMBASE | ID: covidwho-1995752

ABSTRACT

BACKGROUND: Reports of silent hypoxia in patients with Covid-19 have raised concerns that patients monitored at home should receive pulse oximeters to objectively measure oxygen saturation rather than relying on subjective dyspnea as an indicator of clinical deterioration. METHODS: In this pragmatic randomized control trial, patients with suspected or confirmed Covid-19 were randomly assigned (1:1) to receive a text message based remote monitoring program (“Covid Watch”) or the program supplemented with SpO2 monitoring using a home pulse oximeter (“COVID Watch + Pulse Oximetry”). Covid Watch is a an automated 14-day text program that enquires about patients' symptoms of dyspnea. The primary outcome was days alive and out of hospital (DAOH) at 30 days. RESULTS: A total of 1056 patients (611 Covid-19 positive) were assigned to receive automated remote monitoring of both peripheral oxygen saturation (SpO2) levels and self-reported symptoms of dyspnea and 1041 (606 Covid-19 positive) to receive symptom monitoring alone. Among Covid-19 patients, the addition of SpO2 monitoring provided no significant difference in mean DAOH at 30 days (29.38 vs 29.46;difference -0.08;95% CI, -0.37 to 0.21). Patients in the intervention arm were more likely to use more clinical resources such as telephone calls and telemedicine visits. These finding were consistent across subgroups defined by race, age, and clinical status. CONCLUSIONS: SpO2 monitoring added no clinical value to subjective assessments of dyspnea in an automated text-message remote monitoring program of Covid-19 patients, while simultaneously increasing utilization of clinical resources. These findings reveal that home pulse oximetry may be ineffective and inefficient in supporting the management of Covid-19 patients in outpatient settings relative to remotely monitoring symptoms of dyspnea alone.

15.
Journal of General Internal Medicine ; 37:S456, 2022.
Article in English | EMBASE | ID: covidwho-1995724

ABSTRACT

CASE: 45-year-old woman with PMHx systemic sclerosis presents with fever, weight loss, chest tightness, weakness and altered mental status for 2 weeks. Home meds are prednisone, mycophenolic acid, lasix. On presentation she is febrile to 38.9C, HR 110, BP 97/64, SpO2 96% on RA. Exam shows telangiectasis, normal cardiopulmonary exam, mild sclerodactyly. Oriented only to self, has bilateral LE 3/5 weakness. Labs with WBC 2.6K, Hgb 7.1, plts 126K. Cr normal. Liver enzymes mildly elevated. BNP 3900. Trop 251. Lactate 4.9 Blood cultures negative, CMV/EBV negative, COVID-19 negative, Ferritin > 15,000, Triglycerides 274 LDH 495, Fibrinogen 274, D-Dimer 755, ANA 1:1280, + dsDNA, low titer Smith, + RNP, + SSA, + RNA Pol III. TTE with EF 27% and diffuse hypokinesis. Cardiac MRI with myocardial fibrosis no active myocarditis, suggestive of scleroderma. Lumbar puncture with high protein, borderline increased oligoclonal bands, elevated IgG index but elevated synthesis rate, suggestive of CNS inflammation. Patient is in cardiogenic shock secondary to hemophagocytic lymphohistiocytosis/macrophage activating syndrome (HLH/MAS) related to systemic sclerosis/scleroderma with SLE overlap requiring inotropes and aggressive diuresis. She develops severe pain and bright red purpura on bilateral legs. Hypercoagulable w/u showed low protein C/S, low complement, negative cryoglobulin. Skin biopsy showed vaso-occlusive process c/w HLH/MAS. Receives IV methylprednisolone for empiric treatment of HLH/MAS and IV cyclophosphamide for possible lupus cerebritis. Patient improves and is discharged on long-term milrinone, Plaquenil, and steroids. IMPACT/DISCUSSION: Secondary HLH or MAS is a life-threatening condition of extreme inflammation that can occur in autoimmune conditions, infection, or malignancy Diagnosing HLH requires high clinical suspicion - >10K ferritin level is highly sensitive and specific for diagnosis of HLH This patient has multisystem involvement of autoimmune disease given history of scleroderma The LP studies raise concern for lupus cerebritis, specifically the IgG index and IgG synthesis rate are helpful for this diagnosis Underline subtype of systemic sclerosis-overlap syndromes and here particularly scleroderma lupus overlap Highlight the utility of cardiac MRI in characterizing myocarditis / fibrosis Discuss need for high alert for necrotizing fasciitis with painful palpable purpura Overview treatment of HLH/MAS with high dose steroids Reflection on high mortality of HLH/MAS and question of recovered heart function CONCLUSION: Teaching Point 1: Secondary HLH is a syndrome of extreme inflammation caused by underlying malignancy, autoimmune condition, or infection. Teaching Point 2: HLH and MAS have a great deal of symptom/clinical presentation overlap. Ferritin level > 10,000 is highly sensitive and specific for diagnosis of HLH Teaching Point 3: Systemic sclerosis can present in a variety of ways including cardiac, lung, skin involvement.

16.
Journal of Autoethnography ; 2(2):226-231, 2021.
Article in English | Scopus | ID: covidwho-1993558
17.
Journal of Media Ethics: Exploring Questions of Media Morality ; 2022.
Article in English | Scopus | ID: covidwho-1984975

ABSTRACT

Large-scale social media services have been challenged due to their lack of ethical principles, which has resulted in allegations of user manipulation such as propagation of fake news related to COVID-19 vaccination and biased algorithmic curations that lead to social polarization. We studied current social media community guidelines and conducted a systematic literature review to identify the core values needed for the establishment of guidelines for responsible social media services. Through expert interviews, a framework and guidelines are proposed for each of three areas: protecting privacy, raising awareness, and controlling abuse. We present each set of guidelines with executable principles and relevant design interventions that practitioners can use to offer responsible social media services. Our expert interviews surfaced tensions between the three areas that need to be addressed in developing responsible social media, such as privacy vs. sharing information, pseudonymity vs. safety, and spreading information vs. safety. © 2022 Taylor & Francis Group, LLC.

18.
Clinical and Experimental Allergy ; 52(8):1050-1050, 2022.
Article in English | Web of Science | ID: covidwho-1976287
19.
IEEE Access ; : 1-1, 2022.
Article in English | Scopus | ID: covidwho-1961360

ABSTRACT

The abundance of available information on social networks can provide invaluable insights into people’s responses to health information and public health guidance concerning COVID-19. This study examines tweeting patterns and public engagement on Twitter, as forms of social networks, related to public health messaging in two U.S. states (Washington and Louisiana) during the early stage of the pandemic. We analyze more than 7M tweets and 571K COVID-19-related tweets posted by users in the two states over the first 25 days of the pandemic in the U.S. (Feb. 23, 2020, to Mar. 18, 2020). We also qualitatively code and examine 460 tweets posted by selected governmental official accounts during the same period for public engagement analysis. We use various methods for analyzing the data, including statistical analysis, sentiment analysis, and word usage metrics, to find inter-and intra-state disparities of tweeting patterns and public engagement with health messaging. Our findings reveal that users inWashington were more active on Twitter than users in Louisiana in terms of the total number and density of COVID-19-related tweets during the early stage of the pandemic. Our correlation analysis results for counties or parishes show that the Twitter activities (tweet density, COVID-19 tweet density, and user density) were positively correlated with population density in both states at the 0.01 level of significance. Our sentiment analysis results demonstrate that the average daily sentiment scores of all and COVID-19-related tweets inWashington were consistently higher than those in Louisiana during this period. While the daily average sentiment scores of COVID-19-related tweets were in the negative range, the scores of all tweets were in the positive range in both states. Lastly, our analysis of governmental Twitter accounts found that these accounts’messages were most commonly meant to spread information about the pandemic, but that users were most likely to engage with tweets that requested readers take action, such as hand washing. Author

20.
American Journal of Respiratory and Critical Care Medicine ; 205(1), 2022.
Article in English | EMBASE | ID: covidwho-1927891

ABSTRACT

Introduction/Rationale: People with multiple chronic diseases, such as heart failure (HF) or chronic obstructive pulmonary disease (COPD), are at elevated risk of unplanned repeated hospitalization. Transitional care has been recognized as reducing unexpected rehospitalization after discharge from hospital to home. As the COVID-19 pandemic is prolonged, individual home healthcare services are getting increased attention for post-acute care. However, less is known about the effectiveness of nurse-led transitional care programs, including home-visit intervention. Objectives: This study aimed to identify the effectiveness of nurse-led home-visit transitional care programs in improving health service utilization, functional status, and quality of life (QoL) among people discharged from hospital to home. Methods: We conducted a scoping review of the EBSCOMedline, Cochrane Library and Embase databases searching for articles containing a combination of “home care,” “transitional care,” and “care coordination” between 1973 and 2021. Inclusion criteria were: randomized controlled trials (RCTs) or quasi-experimental studies, adults who need continuing healthcare after discharged to home, and affecting at least one of the following outcomes: hospital readmission, functional status, and QoL. Results: Initial searching identified 1552 potential records, 1328 s were screened, and 105 full texts were retrieved. A total of 16 studies met the selection criteria. Seven studies were conducted in North America and most were RCTs (n=14). Most participants (mean=73 years) had multiple chronic diseases, such as stroke, COPD, or HF. Regarding discharge plans, two-thirds of the studies included a pre-and a post-discharge plan (n=11). All studies included a home-visit intervention regularly or as needed over a period from one week to two years. Intervention team providers were the research team only (n=2), a collaboration with a hospital team (n=4), a community team (n=4), or a hospital team plus a community team (n=6). Hospital readmissions were assessed in 12 studies and found to be significantly lower in the intervention group (n=4). Physical function status was assessed in seven studies and was significantly better in the intervention group (n=2). QoL was assessed in eight studies and was significantly greater in the intervention group (n=3). Conclusions: About 30% of the studies reported that home-visit transitional care interventions had positive effects on hospital readmissions, physical function status, and QoL. More studies are required to include patient engagement and the use of technology, such as telehealth, in transitional care plans to improve selfcare at home.

SELECTION OF CITATIONS
SEARCH DETAIL