Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS
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Anasthesiol Intensivmed Notfallmed Schmerzther · Oct 1995
Historical Article[Intravenous anesthesia with inhalation anesthetics].
The authors describe intravenous anaesthesia with diethyl ether that has been in use for over 70 years as the only clinically useful form of anaesthesia with intravenously applied volatile anaesthetics. Intravenous ether anaesthesia, which had been introduced in 1909 by Burkhardt, was rarely but regularly used in Europe and the United States between 1910 and 1930. ⋯ The "cons" are a quite considerable incidence of venous irritations and thromboses, complicated and costly equipment and preparation of the solution as well as cardiovascular stress in case of cardiac insufficiency patients. Simulation confirmed the statements from literature in respect of the characteristic features concerning induction and manageability.
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Anasthesiol Intensivmed Notfallmed Schmerzther · Oct 1995
Review[Do general anesthetics act on specific receptors?].
First of all, the meanings of the terms anaesthesia, anaesthetic and receptor are defined. Examples of anaesthetic actions in model systems are then described and compared with clinical actions of anaesthetics. When anaesthetics achieve a certain membrane concentration, they begin to influence membrane protein function in a nonspecific manner. ⋯ Rather, it is important that the drug does not show undesirable side effects when it achieves a critical membrane concentration at which lipophilic interactions occur. There are examples of specific interactions of general anaesthetics with receptors as well as examples of nonspecific effects on membranes. Whether these interactions are important for anaesthesia remains to be seen.
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Anasthesiol Intensivmed Notfallmed Schmerzther · Oct 1995
Review[Clinical potency of nitrous oxide--is MAC the gold standard?].
Nitrous oxide is delivered during most cases of general anaesthesia. Though it has a history of approx. 150 years there is no univocal understanding about its clinical potency. Research studies during the last 10 years support, however, the view that 1. the potency of nitrous oxide in the clinical settings is only 1/3 of the potency as estimated from the MAC value; 2. the potency of combinations of nitrous oxide and volatile anaesthetics is represented more appropriately by quantities which are derived from the EEG than by the addition of MAC fractions. The findings of the last 10 years do not support the hypothesis, that the addition of nitrous oxide to the breathing gas is more beneficial than waiving the use of nitrous oxide.