Der Anaesthesist
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The German S3 guidelines on intravascular volume therapy in adults were updated in September 2020. Based on updated evidence recommendations for the diagnosis of isotonic dehydration and for fluid therapy with crystalloids and colloids in peri-interventional and intensive care medicine were proposed.
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Perioperative cardioprotection aims to minimize the consequences of myocardial ischemia reperfusion injury. These strategies appear particularly relevant for anesthesia provision during on-pump cardiac surgery but they potentially affect any cause of perioperative myocardial ischemia. In recent years, several pharmacological and nonpharmacological strategies of cardioprotection have been explored. Results from studies in isolated tissue and animal experiments are promising; however, translation of myocardial conditioning strategies to the clinical setting has been disappointing: in large trials cardioprotective interventions failed to significantly improve outcome. ⋯ Results of experimental studies are convincing but translation into clinical practice remains challenging. Several confounders have been identified contributing to the mainly inconclusive results from clinical studies, such as comorbidities and comedications, choice of anesthetic regimen and also methodological issues. Carefully designed clinical trials in well-defined patient cohorts evaluating combinations of protective strategies targeting different pathways and cell types might support bench to bedside translation.
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The COVID-19 pandemic represents an unprecedented severe test for emergency medicine in Germany. In addition to in-hospital emergency medicine, prehospital emergency medicine has the decisive task of fully guaranteeing emergency medical healthcare. In this article the Berlin Fire Brigade shows new ways for emergency medical services to fulfil these increased responsibilities during the pandemic in prehospital emergency medicine in the State of Berlin. ⋯ The continuing pandemic reveals that tasks and responsibilities of public services in emergency rescue go far beyond the immediate medical prevention of danger to life and limb. In addition to the controller and triage functions in the integrated dispatch center of the Berlin Fire Brigade (112), the emergency and healthcare measures could be ensured. This was accomplished by comprehensive measures for situation control, situation reports and mastering situations despite the lack of alternative outpatient care options, especially in the areas of general practitioner, public health care and medical specialist practices.
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The entry of gases into the vascular system is called vascular air embolism (VAE). The blocking of the pulmonary circulation by VAE can lead to fulminant right-sided heart failure and cardiocirculatory arrest. A VAE can occur at any time if there is an open connection between the environment and a venous vessel with subatmospheric pressure. ⋯ Intraoperatively TEE is the most sensitive procedure not only to detect a VAE but also to visualize the clinical expression, e.g. acute right heart overload. The avoidance of an initial and repeated air embolism is the primary measure to minimize the incidence and severity of VAE. Intraoperatively the following measures should be undertaken: excellent communication between anesthesia and surgery personnel with predetermined actions, maintenance of normal volume, patient positioning with minimal difference in height between heart and head, state of the art surgical technique with closure of potential air entry sites, sufficient detection of air by TEE, repeated jugular vein compression during neurosurgery, intraoperative Trendelenburg positioning of the patient during persisting or clinically evident VAE, differentiated adjustment of ventilatory settings and catecholamine treatment, aspiration of the blood-air mixture (air lock) at the junction of the superior vena cava and right atrium through a large bore central venous line and keeping check of the coagulation status.