ABSTRACT
Hospitalised patients with COVID-19 often require oxygen because of the increased risk of hypoxia, and one of the main treatment goals is to avoid mechanical ventilation where possible. Non-invasive respiratory support such as high-flow nasal oxygen, bi-level positive airway pressure and continuous positive airway pressure appear to be clinical alternatives. However, further research is needed to assess the effectiveness of non-invasive respiratory support and its varying modes as a treatment for COVID-19 within a diverse population. This commentary aims to critically appraise three reviews concerning the use of non-invasive respiratory support in patients with COVID-19 and expand upon the findings with regards to clinical practice.
ABSTRACT
People with dementia belong to some of the most vulnerable groups of people, and their vulnerability has been augmented by the Covid-19 pandemic. This article critically appraises and evaluates a systematic review that investigated the relationship between dementia and COVID-19 related outcomes.
ABSTRACT
The perinatal period is a high risk for onset and relapse of mental health problems. The COVID-19 pandemic is a particularly stressful occurrence with reported negative impacts on perinatal mental health, hence the need to understand these impacts on pregnant and post-partum childbearing women and people, and prioritise interventions to alleviate them. This is the first of two articles.
ABSTRACT
In this commentary, Hamer, Phoong, Harrison and Hill critically appraise a systematic review of the prevalence, nature, and rate of cardiovascular involvement in patients with suspected or confirmed COVID-19.
ABSTRACT
This article is an evidence commentary based on the study ‘Predictors of mortality in hospitalised COVID-19 patients: a systematic review and meta-analysis’ by Tian et al, published in volume 92 of the Journal of Medical Virology in 2020. This commentary critically appraises the methods used within this systematic review and meta-analysis and discusses the findings in the context of clinical practice.
Subject(s)
COVID-19/epidemiology , Independent Living , Rehabilitation , Virtual Reality , Aged , HumansABSTRACT
Wastewater1 surveillance of SARS-CoV-2 may be a useful supplement to clinical surveillance as it is shed in feces, there are many asymptomatic cases, and diagnostic testing can have capacity limitations and extended time to results. Although numerous studies have utilized wastewater surveillance for SARS-CoV-2, the methods used were developed and/or standardized for other pathogens. This study evaluates multiple methods for concentration and recovery of SARS-CoV-2 and seeded human coronavirus OC43 from municipal primary wastewater and/or sludge from the Greater Seattle Area (March-July 2020). Methods evaluated include the bag-mediated filtration system (BMFS), with and without Vertrel™ extraction, skimmed milk flocculation, with and without Vertrel™ extraction, polyethylene glycol (PEG) precipitation, ultrafiltration, and sludge extraction. Total RNA was extracted from wastewater concentrates and analyzed for SARS-CoV-2 and OC43 with RT-qPCR. Skimmed milk flocculation without Vertrel™ extraction performed consistently over time and between treatment plants in Seattle-area wastewater with the lowest average OC43 Cq value and smallest variability (24.3; 95% CI: 23.8-24.9), most frequent SARS-CoV-2 detection (48.8% of sampling events), and highest average OC43 percent recovery (9.1%; 95% CI: 6.2-11.9%). Skimmed milk flocculation is also beneficial because it is feasible in low-resource settings. While the BMFS had the highest average volume assayed of 11.9 mL (95% CI: 10.7-13.1 mL), the average OC43 percent recovery was low (0.7%; 95% CI: 0.4-1.0%). Ultrafiltration and PEG precipitation had low average OC43 percent recoveries of 1.0% (95% CI: 0.5-1.6%) and 3.2% (95% CI: 1.3-5.1%), respectively. The slopes and efficiency for the SARS-CoV-2 standard curves were not consistent over time, confirming the need to include a standard curve each run rather than using a single curve for multiple plates. Results suggest that the concentration and detection methods used must be validated for the specific water matrix using a recovery control to assess performance over time.