Point-of-care lung ultrasound in the assessment of COVID-19: results of a UK multicentre service evaluation.

BACKGROUND: Coronavirus disease 2019 has had a dramatic impact on the delivery of acute care globally. Accurate risk stratification is fundamental to the efficient organisation of care. Point-of-care lung ultrasound offers practical advantages over conventional imaging with potential to improve the operational performance of acute care pathways during periods of high demand. The Society for Acute Medicine and the Intensive Care Society undertook a collaborative evaluation of point-of-care imaging in the UK to describe the scope of current practice and explore performance during real-world application. METHODS: A retrospective service evaluation was undertaken of the use of point-of-care lung ultrasound during the initial wave of coronavirus infection in the UK. We report an evaluation of all imaging studies performed outside the intensive care unit. An ordinal scale was used to measure the severity of loss of lung aeration. The relationship between lung ultrasound, polymerase chain reaction for SARS-CoV-2 and 30-day outcomes were described using logistic regression models. RESULTS: Data were collected from 7 hospitals between February and September 2020. In total, 297 ultrasound examinations from 295 patients were recorded. Nasopharyngeal swab samples were positive in 145 patients (49.2% 95%CI 43.5-54.8). A multivariate model combining three ultrasound variables showed reasonable discrimination in relation to the polymerase chain reaction reference (AUC 0.77 95%CI 0.71-0.82). The composite outcome of death or intensive care admission at 30 days occurred in 83 (28.1%, 95%CI 23.3-33.5). Lung ultrasound was able to discriminate the composite outcome with a reasonable level of accuracy (AUC 0.76 95%CI 0.69-0.83) in univariate analysis. The relationship remained statistically significant in a multivariate model controlled for age, sex and the time interval from admission to scan Conclusion: Point-of-care lung ultrasound is able to discriminate patients at increased risk of deterioration allowing more informed clinical decision making.

INVESTIGATING IDA: LARGE-SCALE DATA SHOWING PERSISTENT GAPS AT THE FRONT DOOR

Introduction Iron deficiency anaemia (IDA) can be a sign of serious underlying disease but often overlooked. Recently updated guidelines of the British Society of Gastroenterology (BSG) recommend male and postmenopausal female patients with IDA should be screened for coeliac disease and undergo dual endoscopy (or CT). Aims This project looked to assess current adherence to these guidelines at the Queen Elizabeth Hospital in Birmingham. Methods A retrospective audit was performed using health informatics for patients who attended AMU/CDU from April 2018 to March 2021. The number of patients with IDA in this time frame was identified. A further analysis of this group was made to determine the proportion of patients with IDA who had IgA TTG measured as well as those who had OGD and colonoscopy/CT colonoscopy requested. Results There were 67797 patients in this study period. 32422 (47.8%) were anaemic (Hb < 120g/dl for women, <130g/dl for men as per WHO guidelines) of which 6357 (19.6%;9.38% of total) had a microcytic anaemia (MCV <83 as per University Hospitals Birmingham laboratory reference range). Ferritin was tested in 3337 (52.5%) of this group, and of those, 1041 (31.2%) were found to have overt IDA (ferritin <30 mg/mL). Rate of investigation The patient cohort with confirmed IDA comprised 334 males (32.0%), 556 post-menopausal females (53.4%, defined as age ≥45) and 151 pre-menopausal females (14.5%). A further analysis was made to explore how male and postmenopausal female cases were investigated, and if the rate of investigation was affected by the COVID-19 pandemic from 1st March 2020 onwards in this subgroup. Results are shown in the table below. In general, only a minority of patients underwent further investigation with males more likely to undergo OGD than females. Surprisingly, apart from increased TTG check latterly, little difference was seen after onset of the COVID-19 pandemic. Conclusions This large-scale study found that only a small minority of patients with IDA underwent further investigation. Whilst the study period includes the pandemic era, our results don't suggest this made a significant impact on practice. Nevertheless, these findings indicate a strong need for increased awareness and quality improvement about optimising IDA investigation according to BSG guidelines.

Tocilizumab for treatment of SARS-CoV-2 infection at home: A case report.

SARS-CoV-2 virtual wards have successfully developed to monitor and escalate patients to hospital throughout the pandemic. Here we describe the case of an 84 year old man who received his complete care for severe SARS-CoV-2 pneumonitis at home, including the administration of oxygen, dexamethasone and tocilizumab.

Society for Acute Medicine Benchmarking Audit 2021 (SAMBA21): assessing national performance of acute medicine services.

INTRODUCTION: The Society for Acute Medicine Benchmarking Audit 2021 (SAMBA21) took place on 17th June 2021, providing the first assessment of performance against the Society for Acute Medicine's Clinical Quality Indicators (CQIs) within acute medical units since the start of the COVID-19 pandemic. METHODS: All acute hospitals in the UK were invited to participate. Data were collected on unit structure, and for patients admitted to acute medicine services over a 24-hour period, with follow-up at 7 days. RESULTS: 158 units participated in SAMBA21, from 156 hospitals. 8973 patients were included. The number of admissions per unit had increased compared to SAMBA19 (Sign test p<0.005). An early warning score was recorded within 30 minutes of hospital arrival in 77.4% of patients. 87.4% of unplanned admissions were seen by a tier 1 clinician within 4 hours of arrival. Overall, the medical team performed the initial clinician assessment for 36.4% of unplanned medical admissions. More than a third of medical admissions had their initial assessment in Same Day Emergency Care (SDEC) in 25.4% of hospitals. 62.1% of unplanned admissions were seen by two other clinical decision makers prior to consultant review. Of those unplanned admissions requiring consultant review, 67.8% were seen within the target time. More than a third of unplanned admissions were discharged the same day in 41.8% of units. CONCLUSION: Performance against the CQIs for acute medicine was maintained in comparison to previous rounds of SAMBA, despite increased admissions. There remains considerable variation in unit structure and performance within acute medical services.

Point-of-care lung ultrasound in the assessment of suspected COVID-19: a retrospective service evaluation with a severity score.

INTRODUCTION: Point-of-care lung ultrasound (POCUS) has been advocated as a tool to assess the severity of COVID19 and thereby aid risk stratification. METHODS: We conducted a retrospective service evaluation between the 3rd March and the 5th May 2020 to describe and characterise the use of POCUS within an acute care pathway designed specifically for the assessment of suspected or confirmed COVID-19. A novel POCUS severity scale was formulated by assessing pleural and interstitial abnormalities within six anatomical zones (three for each lung). An aggregated score was calculated for each patient and evaluated as a marker of disease severity using standard metrics of discriminatory performance. RESULTS: POCUS was performed in the assessment of 100 patients presenting with suspected COVID-19. POCUS was consistent with COVID-19 infection in 92% (n = 92) of the patients assessed. Severity, as assessed by POCUS, showed good discriminatory performance to predict all-cause inpatient mortality, death or critical care admission, and escalated oxygen requirements (AUC .80, .80, 82). The risk of all-cause mortality in patients with scores in lowest quartile was 2.5% (95%CI 0.12- 12.95) compared with 42.9% (95CI 15.8 - 75.0%) in the highest quartile. POCUS assessed severity correlated with length of stay and duration of supplemental oxygen therapy. CONCLUSION: A simple aggregated score formed by the summating the degree of pleural and interstitial change within six anatomical lung zones showed good discriminatory performance in predicting a range of adverse outcomes in patients with suspected COVID-19.