Early conscious prone positioning in patients with COVID-19 receiving continuous positive airway pressure: A retrospective analysis

The global pandemic of COVID-19 has challenged the management of hypoxaemic respiratory failure and strained intensive care unit resources. While prone positioning (PP) is an established therapy in mechanically ventilated patients with acute respiratory distress syndrome (ARDS), its role in conscious patients is less well defined. We retrospectively reviewed our experience of implementing early PP in a cohort of 24 patients with acute hypoxaemic respiratory failure due to COVID-19 who required support with continuous positive airway pressure (CPAP). The use of PP alongside CPAP significantly increased both the ROX index and arterial oxygen pressure:fractional inspired oxygen (PaO 2:FiO 2) ratio from baseline values (ROX index: 7.0±2.5 baseline vs 11.4±3.7 CPAP+PP,

'Difficult Conversations':evaluation of multiprofessional training

ObjectivesEvidence-based communication skills training for health and social care professionals is essential to improve the care of seriously ill patients and their families. We aimed to evaluate the self-reported impact of ‘Difficult Conversations’, a multidisciplinary half-day interactive workshop, and gain feedback to inform future development and evaluation.MethodsService evaluation using questionnaire data collected before and immediately after workshops from February 2015 to August 2016 regarding participant self-assessed confidence, knowledge and skills. Qualitative free-text comments provided feedback about the workshop and were subjected to content analysis.ResultsOf 886 workshop participants, 655 completed baseline questionnaires and 714 postworkshop questionnaires; 550 were matched pairs. Participants were qualified or trainee general practitioners (34%), community nurses and care coordinators (32%), social care professionals (7%), care home staff (6%), advanced practice/specialist nurses (5%), care workers (5%) and allied health professionals (3%). All groups demonstrated significant increases in mean self-assessed confidence (2.46, 95% CI 2.41 to 2.51; to 3.20, 95% CI 3.17 to 3.24; P&lt;0.001), knowledge (2.22, 95% CI 2.17 to 2.27; to 3.18, 95% CI 3.14 to 3.22; P&lt;0.001) and skills (2.37, 95% CI 2.32 to 2.42; to 3.09, 95% CI 3.05 to 3.12; P&lt;0.001). Qualitative findings showed participants valued role play, the communication framework acronym and opportunities for discussion. They commended workshop facilitators’ skills, the safe atmosphere and interprofessional learning. Suggested improvements included more prepared role play and greater coverage of the taught topics.Conclusions‘Difficult Conversations’ workshops were associated with improvements in participants’ self-assessed confidence, knowledge, and skills. Our findings identify workshop characteristics that are acceptable to multidisciplinary trainees. Further testing is warranted to determine effectiveness and accurately identify workshop components leading to change.</jats:sec

The BepiColombo Mercury Imaging X-Ray Spectrometer: Science Goals, Instrument Performance and Operations

The Mercury Imaging X-ray Spectrometer is a highly novel instrument that is designed to map Mercury's elemental composition from orbit at two angular resolutions. By observing the fluorescence X-rays generated when solar-coronal X-rays and charged particles interact with the surface regolith, MIXS will be able to measure the atomic composition of the upper similar to 10-20 mu m of Mercury's surface on the day-side. Through precipitating particles on the night-side, MIXS will also determine the dynamic interaction of the planet's surface with the surrounding space environment. MIXS is composed of two complementary elements: MIXS-C is a collimated instrument which will achieve global coverage at a similar spatial resolution to that achieved (in the northern hemisphere only - i.e. similar to 50 - 100 km) by MESSENGER; MIXS-T is the first ever X-ray telescope to be sent to another planet and will, during periods of high solar activity (or intense precipitation of charged particles), reveal the X-ray flux from Mercury at better than 10 km resolution. The design, performance, scientific goals and operations plans of the instrument are discussed, including the initial results from commissioning in space.Peer reviewe

Pneumomediastinum in COVID-19: a phenotype of severe COVID-19 pneumonitis? The results of the United Kingdom (POETIC) survey.

BACKGROUND: There 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. METHODS: A 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. RESULTS: 377 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. CONCLUSIONS: Pneumomediastinum 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