Improved sensitivity using a dual target, E and RdRp assay for the diagnosis of SARS-CoV-2 infection: Experience at a large NHS Foundation Trust in the UK.
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ABSTRACT:
SUBMITTER: Colton H
PROVIDER: S-EPMC7255707 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:Recent large national and international cohorts describe the baseline characteristics and outcome of hospitalised patients with COVID-19, however there is limited granularity to these reports. We aimed to provide a detailed description of a UK COVID-19 cohort, focusing on management and outcome. We performed a retrospective single-centre analysis of clinical management and 28-day outcomes of consecutive adult inpatients with SARS-CoV-2 PCR-confirmed COVID-19 from 31 January to 16 April 2020 inclusive. In total, 316 cases were identified. Most patients were elderly (median age 75) with multiple comorbidities. One quarter were admitted from residential or nursing care. Mortality was 84 out of 316 (26.6%). Most deaths occurred in patients in whom a ceiling of inpatient treatment had been determined and for whom end of life care and specialist palliative care input was provided where appropriate. No deaths occurred in patients aged under 56 years. Decisions to initiate respiratory support were individualised after consideration of patient wishes, premorbid frailty and comorbidities. In total, 59 (18%) patients were admitted to intensive care, of which 31 (10% overall cohort) required intubation. Multiple logistic regression identified associations between death and age, frailty, and disease severity, with age as the most significant factor (odds ratio 1.07 [95% CI 1.03-1.10] per year increase, p < 0.001). These findings provide important clinical context to outcome data. Mortality was associated with increasing age. Most deaths were anticipated and occurred in patients with advance decisions on ceilings of treatment.
| S-EPMC7931073 | biostudies-literature
Project description:Medicines reconciliation is integral to patient safety, symptom control and reducing patient anxiety. During a 3-month period on the respiratory ward at St. Peter's Hospital, 54% of drug charts were not reconciled with pre-admission medicines at the point of discharge for admissions up to 17 days. Only 18% were reconciled within 24 hours of admission. 50% of drug charts were missing 0-2 pre-admission medicines and 50% were missing 3-5 pre-admission medicines. The most common medicines that were not reconciled included topical applications which included eye, ear, nasal and skin applications (14%); vitamins i.e. vitamin B12 and thiamine, analgesia, PRN inhalers (11% individually); antidepressants and lipid regulators (6% individually); amongst a range of other medications including antiplatelets, calcium channel blockers, ACE inhibitors and diuretics. Two interventions were carried out to improve the rate of medicines reconciliation onto hospital drug charts with pre-admission medicines. These were: 1) a green sticker placed in the medical notes by the pharmacist when drug charts were incomplete, which required a date and signature from the doctor when the drug chart had been reconciled 2) the placing of the loose medicines reconciliation record (a list of pre-admission medicines retrieved from a reliable source usually by the pharmacist) to the front of the drug chart. These measures were designed to alert the doctors that the drug chart was incomplete. After 2 PDSA cycles, the results showed positive outcomes. In 75% of the cases where the interventions were used, medicines reconciliation was complete at the point of discharge with 34% of drug charts reconciled within 24 hours of admission. Of the 25% of drug charts that were not reconciled despite the use of the interventions, 100% of them were missing 0-2 medicines however 0% were missing 3-5 medicines. This highlights that the interventions were effective in improving the rates of medicines reconciliation.
| S-EPMC5492467 | biostudies-other
Project description:BackgroundWe aimed to measure SARS-CoV-2 seroprevalence in a cohort of healthcare workers (HCWs) during the first UK wave of the COVID-19 pandemic, explore risk factors associated with infection, and investigate the impact of antibody titres on assay sensitivity.MethodsHCWs at Sheffield Teaching Hospitals NHS Foundation Trust (STH) were prospectively enrolled and sampled at two time points. SARS-CoV-2 antibodies were tested using an in-house assay for IgG and IgA reactivity against Spike and Nucleoprotein (sensitivity 99·47%, specificity 99·56%). Data were analysed using three statistical models: a seroprevalence model, an antibody kinetics model, and a heterogeneous sensitivity model.FindingsAs of 12th June 2020, 24·4% (n=311/1275) HCWs were seropositive. Of these, 39·2% (n=122/311) were asymptomatic. The highest adjusted seroprevalence was measured in HCWs on the Acute Medical Unit (41·1%, 95% CrI 30·0-52·9) and in Physiotherapists and Occupational Therapists (39·2%, 95% CrI 24·4-56·5). Older age groups showed overall higher median antibody titres. Further modelling suggests that, for a serological assay with an overall sensitivity of 80%, antibody titres may be markedly affected by differences in age, with sensitivity estimates of 89% in those over 60 years but 61% in those ≤30 years.InterpretationHCWs in acute medical units working closely with COVID-19 patients were at highest risk of infection, though whether these are infections acquired from patients or other staff is unknown. Current serological assays may underestimate seroprevalence in younger age groups if validated using sera from older and/or more symptomatic individuals.Research in contextEvidence before this study: We searched PubMed for studies published up to March 6th 2021, using the terms "COVID", "SARS-CoV-2", "seroprevalence", and "healthcare workers", and in addition for articles of antibody titres in different age groups against coronaviruses using "coronavirus", "SARS-CoV-2, "antibody", "antibody tires", "COVID\" and "age". We included studies that used serology to estimate prevalence in healthcare workers. SARS-CoV-2 seroprevalence has been shown to be greater in healthcare workers working on acute medical units or within domestic services. Antibody levels against seasonal coronaviruses, SARS-CoV and SARS-CoV-2 were found to be higher in older adults, and patients who were hospitalised.Added value of this study: In this healthcare worker seroprevalence modelling study at a large NHS foundation trust, we confirm that those working on acute medical units, COVID-19 "Red Zones" and within domestic services are most likely to be seropositive. Furthermore, we show that physiotherapists and occupational therapists have an increased risk of COVID-19 infection. We also confirm that antibody titres are greater in older individuals, even in the context of non-hospitalised cases. Importantly, we demonstrate that this can result in age-specific sensitivity in serological assays, where lower antibody titres in younger individuals results in lower assay sensitivity.Implications of all the available evidence: There are distinct occupational roles and locations in hospitals where the risk of COVID-19 infection to healthcare workers is greatest, and this knowledge should be used to prioritise infection prevention control and other measures to protect healthcare workers. Serological assays may have different sensitivity profiles across different age groups, especially if assay validation was undertaken using samples from older and/or hospitalised patients, who tend to have higher antibody titres. Future seroprevalence studies should consider adjusting for age-specific assay sensitivities to estimate true seroprevalence rates.Author contributions
| S-EPMC8282110 | biostudies-literature
Project description:Oxygen is one of the most commonly administered drugs in UK hospitals. Our quality improvement project aimed to increase the safety of oxygen therapy at University Hospitals Bristol NHS Foundation Trust. We aimed to increase the rate of oxygen prescribing and increase the percentage of nurses signing appropriately for oxygen titration and administration. We hypothesised this would result in a higher percentage of patients achieving their appropriate oxygen saturations. Our project ran on several acute medical and surgical wards. We tested several interventions with a plan, do, study, act method of continuous data collection. We firstly focussed on the education of junior doctors and then the wider multi-disciplinary team with a trust-wide "safety focus". We utilised patient safety systems already in place in the hospital, such as the clinical risk register and incident reporting system. We also trialled an intervention that was successfully implemented by another group in a different trust in the UK. Oxygen prescription increased from 44.4% to 76.9% over the duration of the project. Appropriate nursing signatures increased from 26.6% to 60%. The number of patients achieving appropriate target saturations rose from 61.8% to 76.7%. The most successful interventions were the trust safety briefing and oxygen safety hangers. Our project has showed the importance of integrating new projects within safety schemes already available. Persistence and careful intervention are key to changing strongly engrained cultures in large organisations. Interventions that have proved to be successful in other trusts can be implemented to enact change.
| S-EPMC4693053 | biostudies-literature
Project description:IntroductionCurrent NHS guidelines recommend that treatment of colorectal patients referred through the two-week wait referral system should occur within sixty two days from the date of referral. The COVID-19 pandemic which started in March 2020 has however led to significant delays in the delivery of health services, including colorectal cancer treatments. This study investigates the effects of delayed colorectal cancer treatments during the COVID pandemic on disease progression.MethodsA retrospective chart review of 107 patients with histologically confirmed diagnosis of colorectal cancer was conducted. The occurrence of cancer upstaging after initial diagnosis was assessed and compared between patients with treatment delays and patients who received treatments within the period recommended by NHS guidelines. A logistic regression was performed to evaluate the association between treatment delays beyond 62 days and cancer upstaging.ResultsThe median age of the cohort was 71.2 years and 64.5% of the patients were over 65 years. Treatment delays were observed in 53.3% of reviewed patients. Patients with treatment delays received cancer treatments 95.8 (31.0) days on average after referral, compared to 46.3 (11.5) days in patients who experienced no treatment delays (p-value<0.0001). 38.6% of patients with treatment delays experienced cancer upstaging by the time of treatment, compared to 20% in the non-delay group (p-value = 0.036). Patients who received treatment after sixty two days from date of referral were 3.27 times more likely to experience colorectal cancer upstaging compared to those who received timely treatments.ConclusionAlthough an effective response to the Covid-19 pandemic requires the reallocation of healthcare resources, there is a need to ensure that treatments and health outcomes of patients with chronic diseases such as colorectal cancer continue to be prioritized and delivered in timely fashion.
| S-EPMC8673748 | biostudies-literature
Project description:Data Access Committee EGAC00001002347
| EGAC00001002347 | EGA
Project description:Healthcare workers (HCW) are potentially at increased risk of infection with coronavirus disease (COVID-19) and may transmit severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to vulnerable patients. We present results from staff testing at Sheffield Teaching Hospitals NHS Foundation Trust, United Kingdom. Between 16 and 29 March 2020, 1,533 symptomatic HCW were tested, of whom 282 (18%) were positive for SARS-CoV-2. Testing HCW is a crucial strategy to optimise staffing levels during this outbreak.
| S-EPMC7160437 | biostudies-literature
Project description:ObjectivesWe aimed to compare trajectories of cognitive performance in individuals diagnosed with dementia with and without severe mental illness (SMI).DesignRetrospective cohort study.SettingWe used data from a large longitudinal mental healthcare case register, the Clinical Record Interactive Search (CRIS), at the South London and Maudsley NHS Foundation Trust (SLaM) which provides mental health services to four south London boroughs.ParticipantsOur sample (N = 4718) consisted of any individual who had a primary or secondary diagnosis of dementia from 2007 to 2018, was 50 years old or over at first diagnosis of dementia and had at least 3 recorded Mini-Mental State Examination (MMSE) scores.MeasurementsCognitive performance was measured using MMSE. Linear mixed models were fitted to explore whether MMSE trajectories differed between individuals with or without prior/current SMI diagnoses. Models were adjusted by socio-demographics, cardiovascular risk, smoking, and medication.Results and conclusionsOur results showed differences in the rate of change, where individuals with comorbid SMI had a faster decline when compared with those that have dementia without comorbid SMI. However, this association was partially attenuated when adjusted by socio-demographics, smoking and cardiovascular risk factors; and more substantially attenuated when medication was included in models. Additional analyses showed that this accelerated decline might be more evident in individuals with bipolar disorders. Future research to detangle the potential biological underlying mechanisms of these associations is needed.
| S-EPMC8169045 | biostudies-literature
Project description:Medicine is becoming increasingly protocol driven. This provides a standardised format for doctors to deliver best practice, especially in the acute setting. 40 junior doctors were asked to locate three Trust guidelines: venous thromboembolism (VTE) prophylaxis; antibiotic prescribing; and management of upper gastrointestinal bleed (UGIB). For each doctor the time taken and number of mouse clicks to access each guideline was recorded. Following successful redesign of the Trust intranet we completed a re-audit. Initial results showed 48% of doctors were unable to locate the UGIB or the VTE guidelines within 5 min. For those who were able to locate the guidelines it took an average of 111 sec and 17 mouse clicks. 100% of doctors were able to locate the antibiotic guidelines in 12 sec and with two clicks. These are accessible via a single port of access. Following our redesign of the Trust intranet 100% of doctors located all three guidelines in an average time of 7.2 sec and in 2.1 clicks. Improvement in access to VTE prophylaxis and UGIB was statistically significant (p=0.001). Redesigning our Trust intranet homepage has significantly improved the accessibility of acute surgical and medical guidelines.
| S-EPMC4645694 | biostudies-literature
Project description:PurposeThe predictive value of suicide risk assessment in secondary mental healthcare remains unclear. This study aimed to investigate the extent to which clinical risk assessment ratings can predict suicide among people receiving secondary mental healthcare.MethodsRetrospective inception cohort study (n = 13,758) from the South London and Maudsley NHS Foundation Trust (SLaM) (London, UK) linked with national mortality data (n = 81 suicides). Cox regression models assessed survival from the last suicide risk assessment and ROC curves evaluated the performance of risk assessment total scores.ResultsHopelessness (RR = 2.24, 95% CI 1.05-4.80, p = 0.037) and having a significant loss (RR = 1.91, 95% CI 1.03-3.55, p = 0.041) were significantly associated with suicide in the multivariable Cox regression models. However, screening statistics for the best cut-off point (4-5) of the risk assessment total score were: sensitivity 0.65 (95% CI 0.54-0.76), specificity 0.62 (95% CI 0.62-0.63), positive predictive value 0.01 (95% CI 0.01-0.01) and negative predictive value 0.99 (95% CI 0.99-1.00).ConclusionsAlthough suicide was linked with hopelessness and having a significant loss, risk assessment performed poorly to predict such an uncommon outcome in a large case register of patients receiving secondary mental healthcare.
| S-EPMC6208937 | biostudies-literature