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COVID-19 in the Intensive Care Unit: Medical, Nursing, and Physical Therapy Challenges Abstract. The treatment of patients with COVID-19 is a big challenge for intensive care units: substantial additional staff and material is needed to treat the surge of patients admitted in short time. Treatment is difficult as many patients present with multiple organ failure, including acute respiratory distress syndrome (ARDS). Mostly, oxygenation is substantially impaired and compliance low, and many patients need prone positioning. This article deals with the difficulties during the first surge of patients with COVID-19. The suffering of the relatives who were not allowed to visit must also be considered.

Lactic Acidosis and Other Misunderstandings Abstract. Lactic acidosis is a frequently encountered clinical problem in intensive care medicine. Nevertheless, many of the underlying biochemical processes are insufficiently understood, which leads to various misconceptions. Physiologically, lactate is an important, continuously produced carrier of energy and by no means a metabolic 'waste product'. Lactate is the corresponding base to lactic acid and is produced directly from pyruvate. In this reaction H + is consumed and therefore lactate production itself cannot be directly responsible for the simultaneously arising acidosis. An elevated lactate level allows no conclusions about the underlying pathophysiological process, and, more importantly, it is not an appropriate marker for tissue oxygenation.

The legitimacy of intensivists and emergency physicians to use ultrasound in their daily practice is no longer questioned. This new tool is now considered essential in the acute care setting. After overcoming the technological and political obstacles, the current challenge is to implement technology in units. Here we give some recommendations based on our experience of the last fifteen years.