[Nonoperating room anesthesia]. / Dezentrale Arbeitsplätze in der Anästhesiologie.

Anesthesia services outside central surgical facilities (nonoperating room anesthesia, NORA) have become more important. Nonoperating room anesthesia is a challenging field with a wide range of patient ages and interventions. The anesthesiologist is caught between the existing expertise in sedation, respiratory and emergency management and the fact that it may be a potentially avoidable cost factor. The efforts of some specialist departments to carry out sedation themselves even with more complex interventions have therefore increased. In order to permanently establish anesthesia here, apart from the pure anesthesiological expertise, a pronounced willingness to interdisciplinary communication and cooperation is necessary. Only in this way can the participating specialist disciplines be convinced of the anesthesiological added value for the patient. Groups of patients requiring special attention include pediatric patients. The care especially for children under 2 years old also requires the particular anesthesiological expertise of the supervising anesthesiologist; however, profound knowledge, for example in cardiac anesthesia, is also required if special interventions are decentrally managed in the cardiac catheterization laboratory.

Effects of ropivacaine, bupivacaine and sufentanil in colon and pancreatic cancer cells in vitro.

The perioperative period is supposed to be a vulnerable period for cancer progression. Results of clinical studies indicate that the use of regional anesthesia can influence and improve oncological outcome of cancer patients. Uncontrolled cell proliferation and resistance to apoptotic cell death are important characteristics of solid tumors. The aim of this study was to investigate the effects of the clinically used local anesthetics ropivacaine or bupivacaine and the opioid analgesic sufentanil on cell proliferation, cell cycle distribution and apoptosis of colon (HT 29 and SW 480) and pancreatic (PaTu 8988t and PANC 1) cancer cell lines in vitro. Cell proliferation was measured by Cell Proliferation ELISA BrdU Assay. Apoptosis was analyzed by annexin V staining and cell cycle distribution was detected by flow cytometry. Ropivacaine, bupivacaine and sufentanil did not change apoptosis rate and cell cycle distribution in clinically concentration. Only high concentrations of ropivacaine or bupivacaine revealed antiproliferative potency. Protective effects of epidural anesthesia observed in clinical studies seem not to be based on direct effects of these drugs on cancer cells.

[Interaction of anesthetics and analgesics with tumor cells]. / Interaktion von Anästhetika und Analgetika mit Tumorzellen.

The results of preclinical and clinical studies indicate that the perioperative period is a vulnerable period for cancer progression and metastasis. The risk of cancer cell dissemination is enhanced by the combination of surgical manipulation and perioperative immunosuppression. Whether the oncological outcome of cancer patients can be influenced by the choice of anesthetic techniques is still a matter of debate. This review summarizes the molecular characteristics of cancer and interaction of anesthetic and analgesic drugs with cancer cells.