A method for producing constant plasma concentrations of drugs. Application to methohexitone. 1986

T J McMurray, and F P Robinson, and J W Dundee, and J G Riddell, and E McClean

A delivery system in which a dilute infusion of methohexitone is continuously added to a smaller volume of more concentrated solution has been used to infuse exponentially decreasing drug concentrations at a constant rate of infusion. The constants for calculation of concentrations and infusion rate are described. It was possible to achieve and maintain the target plasma concentration required to produce anaesthesia in conjunction with nitrous oxide in oxygen. Methohexitone is the only available drug suitable for this technique, but it requires frequent opioid supplementation and is not the ideal drug for such a technique.

UI MeSH Term Description Entries
D007260 Infusion Pumps Fluid propulsion systems driven mechanically, electrically, or osmotically that are used to inject (or infuse) over time agents into a patient or experimental animal; used routinely in hospitals to maintain a patent intravenous line, to administer antineoplastic agents and other drugs in thromboembolism, heart disease, diabetes mellitus (INSULIN INFUSION SYSTEMS is also available), and other disorders. Drug Infusion Systems,Infusion Pump,Infusion Pumps, External,Infusors,Intravenous Drug Delivery System,Intravenous Drug Delivery Systems,Perfusion Pumps,Pumps, Infusion,Drug Infusion System,External Infusion Pump,External Infusion Pumps,Infusion Pump, External,Infusion System, Drug,Infusion Systems, Drug,Infusor,Perfusion Pump,Pump, External Infusion,Pump, Infusion,Pump, Perfusion,Pumps, External Infusion,Pumps, Perfusion,System, Drug Infusion,Systems, Drug Infusion
D007262 Infusions, Intravenous The long-term (minutes to hours) administration of a fluid into the vein through venipuncture, either by letting the fluid flow by gravity or by pumping it. Drip Infusions,Intravenous Drip,Intravenous Infusions,Drip Infusion,Drip, Intravenous,Infusion, Drip,Infusion, Intravenous,Infusions, Drip,Intravenous Infusion
D008723 Methohexital An intravenous anesthetic with a short duration of action that may be used for induction of anesthesia. Methohexitone,Brevimytal Natrium,Brevital,Brietal,Brietal-Sodium,Methohexital Sodium,Methohexital, Monosodium Salt,Brietal Sodium,Monosodium Salt Methohexital,Natrium, Brevimytal,Sodium, Methohexital
D009609 Nitrous Oxide Nitrogen oxide (N2O). A colorless, odorless gas that is used as an anesthetic and analgesic. High concentrations cause a narcotic effect and may replace oxygen, causing death by asphyxia. It is also used as a food aerosol in the preparation of whipping cream. Laughing Gas,Nitrogen Protoxide,Gas, Laughing,Oxide, Nitrous
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000768 Anesthesia, General Procedure in which patients are induced into an unconscious state through use of various medications so that they do not feel pain during surgery. Anesthesias, General,General Anesthesia,General Anesthesias
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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