BackgroundThere is an emerging understanding that coronavirus disease 2019 (COVID-19) is associated with increased incidence of pneumomediastinum. We aimed to determine its incidence among patients hospitalised with COVID-19 in the United Kingdom and describe factors associated with outcome.MethodsA structured survey of pneumomediastinum and its incidence was conducted from September 2020 to February 2021. United Kingdom-wide participation was solicited via respiratory research networks. Identified patients had SARS-CoV-2 infection and radiologically proven pneumomediastinum. The primary outcomes were to determine incidence of pneumomediastinum in COVID-19 and to investigate risk factors associated with patient mortality.Results377 cases of pneumomediastinum in COVID-19 were identified from 58 484 inpatients with COVID-19 at 53 hospitals during the study period, giving an incidence of 0.64%. Overall 120-day mortality in COVID-19 pneumomediastinum was 195/377 (51.7%). Pneumomediastinum in COVID-19 was associated with high rates of mechanical ventilation. 172/377 patients (45.6%) were mechanically ventilated at the point of diagnosis. Mechanical ventilation was the most important predictor of mortality in COVID-19 pneumomediastinum at the time of diagnosis and thereafter (p<0.001) along with increasing age (p<0.01) and diabetes mellitus (p=0.08). Switching patients from continuous positive airways pressure support to oxygen or high flow nasal oxygen after the diagnosis of pneumomediastinum was not associated with difference in mortality.ConclusionsPneumomediastinum appears to be a marker of severe COVID-19 pneumonitis. The majority of patients in whom pneumomediastinum was identified had not been mechanically ventilated at the point of diagnosis.

No abstract

IntroductionRisk factors of adverse outcomes in COVID-19 are defined but stratification of mortality using non-laboratory measured scores, particularly at the time of prehospital SARS-CoV-2 testing, is lacking.MethodsMultivariate regression with bootstrapping was used to identify independent mortality predictors in patients admitted to an acute hospital with a confirmed diagnosis of COVID-19. Predictions were externally validated in a large random sample of the ISARIC cohort (N=14 231) and a smaller cohort from Aintree (N=290).Results983 patients (median age 70, IQR 53–83; in-hospital mortality 29.9%) were recruited over an 11-week study period. Through sequential modelling, a five-predictor score termed SOARS (SpO2, Obesity, Age, Respiratory rate, Stroke history) was developed to correlate COVID-19 severity across low, moderate and high strata of mortality risk. The score discriminated well for in-hospital death, with area under the receiver operating characteristic values of 0.82, 0.80 and 0.74 in the derivation, Aintree and ISARIC validation cohorts, respectively. Its predictive accuracy (calibration) in both external cohorts was consistently higher in patients with milder disease (SOARS 0–1), the same individuals who could be identified for safe outpatient monitoring. Prediction of a non-fatal outcome in this group was accompanied by high score sensitivity (99.2%) and negative predictive value (95.9%).ConclusionThe SOARS score uses constitutive and readily assessed individual characteristics to predict the risk of COVID-19 death. Deployment of the score could potentially inform clinical triage in preadmission settings where expedient and reliable decision-making is key. The resurgence of SARS-CoV-2 transmission provides an opportunity to further validate and update its performance.

IntroductionThe first case of novel SARS-COV-2 (COVID-19) in Pakistan was detected on 26 February 2020. Pharmacological and non-pharmacological strategies have been tried to lessen the mortality and morbidity burden. Various vaccines have been approved. The Drug Regulatory Authority of Pakistan gave emergency approval for Sinopharm (BBIBP-CorV) COVID-19 vaccine in December 2021. The phase 3 trial of BBIBP-CorV included only 612 participants aged 60 years and above. The primary aim of this study was to assess the safety and efficacy of BBIBPP-CorV (Sinopharm) vaccine within the Pakistani adult population aged 60 or above. The study was carried out in the Faisalabad district of Pakistan.MethodsA test negative case–control study design was used to assess safety and efficacy of BBIBP-CorV in individuals aged 60 and above against symptomatic infection, hospitalisations and mortality due to SARS-CoV-2 among vaccinated and unvaccinated individuals. ORs were calculated using logistic regression model at 95% CI. ORs were used to calculate the vaccine efficacy (VE) by using the following formula.VE= (1-OR) ×100.Results3426 individuals with symptoms of COVID-19 were PCR tested between 5 May 2021 and 31 July 2021. The results showed that Sinopharm vaccine 14 days after the second dose was efficient in reducing the risk of symptomatic COVID-19 infection, hospitalisations and mortality by 94.3%, 60.5% and 98.6%, respectively, among vaccinated individuals with a significant p value of 0.001.ConclusionOur study showed that BBIBP-CorV vaccine is highly effective in preventing infection, hospitalisations and mortality due to COVID-19.