O2-Mediated Dehydrogenative Phenoxazination of Phenols.

Phenoxazines, in particular N-arylated phenoxazines, represent an increasingly important scaffold in the material sciences. Moreover, the oxygen-gas-mediated dehydrogenative phenochalcogenazination concept of phenols has been developed and exemplified for X = sulfur and recently for X = selenium and tellurium. The smallest chalcogen, X = oxygen, is herein exemplified with various functional groups under a likewise trivial oxygen atmosphere.

Massive hemoptysis two months after an otherwise mild SARS-CoV-2 disease (COVID-19) treated with bronchial artery embolization - A case report.

An otherwise healthy young man presented with massive hemoptysis 2 month following a mild coronavirus disease 2019 (COVID-19) and with no other identifiable cause of illness. The patient was successfully treated with bronchial artery embolization. We are strongly convinced that hemoptysis in this case was COVID-related. This unusual case of delayed COVID-related hemoptysis reveals new aspects in the understanding of mid-term and presumable auto-immune triggered effects in patients with initially only mild symptoms of the disease.

[Noninvasive ventilation and positional therapy in COVID-19 : Case report and literature review]. / Nichtinvasive Beatmungs- und Lagerungstherapie bei COVID-19 : Kasuistik und Literaturübersicht.

If noninvasive ventilation (NIV or high-flow CPAP) fails in severe cases of COVID-19, escalation of treatment with orotracheal intubation and intermitted prone positioning is provided as standard care. The present case reports show two COVID-19 patients with severe refractory hypoxemia despite NIV treatment during the first wave (first half year 2020) and the resulting influence on the treatment regimen during the second wave (since October 2020) of the pandemic. Both patients (aged 63 years and 77 years) voluntarily positioned themselves on the side or in a prone position without prior sedation and oral intubation. Positional treatment promptly improved the arterial oxygenation level. The oxygenation index improved in the following days with continued NIV and intermittent prone and side position. The recovered patients were transferred from the intensive care unit at days 5 and 14, respectively after admission. The case reports, along with other reports, show that prone or lateral positioning may be important in the treatment of SARS-CoV­2 pneumonia in awake and not yet intubated patients.