Der Anaesthesist
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Aneurysmal subarachnoid hemorrhage (SAH) is a devastating disease and nearly one third of patients die in the acute phase. Due to the bleeding event, a hyperactive sympathetic nervous system and an uncontrolled inflammatory response have a profound local and systemic impact on other organ functions. Neuroendocrinological disorders and cardiopulmonary morbidity are dominant. ⋯ Knowledge of the pathophysiology of vasospasms in the later stages of the disease has increased. Anti-inflammatory treatment does not improve the outcome. Nimodipine prophylaxis in the first 96 h after SAH seems to be the only intervention which has been proven to be advantageous in studies; however, nearly every second survivor of SAH suffers from some neurological deficits and more than one third of survivors report depressive episodes or symptoms of posttraumatic stress disorder.
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Cardiovascular diseases are one of the leading causes of morbidity and mortality in Germany. In these patients, the high-risk profile necessitates an interdisciplinary and multimodal approach to treatment. ⋯ Epidural and spinal RA procedures should be carefully considered with respect to the risk-benefit ratio and consideration of the recent guidelines on anesthesia against the background of the current study situation and the regular use of therapy with anticoagulants. The following article elucidates the specific characteristics of anesthesia management as exemplified by some selected endovascular interventions.
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In medical education, simulation is gaining increasing importance for teaching a variety of subjects. A well-founded educational approach is necessary for effective use. In addition to material aspects, simulation environment, curriculum, learning environment, and methods of debriefing have to be considered. The role of a competent instructor should be emphasized and the importance of an elaborate change management process to implement a good concept should not be underestimated.
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Review
[Autonomy and welfare in intensive care medicine : Practical approach in difficult situations].
In intensive care units far-reaching decisions are often made at short notice that require the consent of the informed patient. If this is not possible due to the patient's condition, physicians and legal representatives must ascertain the previously expressed or presumed will of the patient and act accordingly. The legal principles are specified in the Patient Advance Directives Act and the Patient Rights Act. ⋯ To avoid conflicts between patient autonomy and medical treatment, the aims of therapy must be regularly discussed with the patient, representatives or relatives and documented in a written form. Checklists can be useful for structured consultations, to promote transparency and to avoid misunderstandings. Ethics consultations can help to deescalate critical situations.
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Unilateral spinal anesthesia is a cost-effective and rapidly performed anesthetic technique. An exclusively unilateral block only affects the sensory, motor and sympathetic functions on one side of the body and offers the advantages of a spinal block without the typical adverse side effects seen with a bilateral block. The lack of hypotension, in particular, makes unilateral spinal anesthesia suitable for patients with cardiovascular risk factors e. g. aortic valve stenosis or coronary artery disease. ⋯ An injection of 5 mg (1 ml) hyperbaric bupivacaine 0.5 % provides an hour-long block to T 12, and a dose of 7.5 to 10 mg (1.5-2.0 ml) extends the block to T 6. Adding clonidine (0.5 to 1.0 µg/kg BW) to the injection prolongs the duration of the block to approximately two to three hours. During the 20-minute fixation period, the cephalad spread of the block can be influenced to a certain extent by raising or lowering the head of the table.