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Definition
 
enEnglish
Dye Dilution Technique definition: Method for assessing flow through a system by injection of a known quantity of dye into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)
Indicator Dilution Techniques definition: Methods for assessing flow through a system by injection of a known quantity of an indicator, such as a dye, radionuclide, or chilled liquid, into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)
indicator dilution test definition: methods for assessing flow through a system by injection of a known quantity of an indicator, such as a dye, radionuclide, or chilled liquid, into the system and monitoring its concentration over time at a specific point in the system.
Radioisotope Dilution Technique definition: Method for assessing flow through a system by injection of a known quantity of radionuclide into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)
isotope dilution method definition: method of assessing flow through a system by injection of a known quantity of radionuclide into the system and monitoring its concentration over time at a specific point in the system.
Skin Test End-Point Titration definition: A quantitative form of intradermal testing for the relative allergenicity of a substance. It is used to determine the amount of an allergen that will be tolerated in ALLERGEN IMMUNOTHERAPY.
Cardiac Output Units, Dye Dilution definition: Cardiac output units that measures the blood flow from the heart using the indicator dilution technique in which a dye is injected upstream of the heart by a balloon-tipped (flow directed) catheter and monitored on the downstream side. These devices consist of a dye-dilution catheter used to inject a bolus of dye (e.g., lidocaine); a densitometer to determine the dye concentration, typically from a sample in a peripheral artery; and an electronic unit to process and display the results.
Cardiac Output Units, Thermal Dilution definition: Cardiac output units that measure blood flow from the heart using the indicator dilution technique in which an indicator (e.g., cold water) is injected upstream of the heart and monitored on the downstream side. These devices include a balloon-tipped (flow directed) catheter with a temperature probe (e.g., a thermistor) that is placed in the right side of the heart to measure the output flow temperature and an electronic unit that processes the signal from the thermistor and displays a thermal dilution curve from which cardiac output and other hemodynamic parameters such as stroke volume can be derived.
Catheters, Cardiac, Flotation Balloon, Pulmonary Artery, Thermal Dilution definition: Pulmonary artery catheters designed to deliver an indicator (e.g., saline or dextrose) solution at a temperature lower than the blood into the heart. These catheters include an exit port for the indicator solution and an electrical component in which resistance varies with the temperature (i.e., a thermistor) at their distal tip. The distal tip is advanced to the pulmonary artery while the exit port remains into the right atrium; when a known volume of solution is rapidly injected, it mixes with venous blood into the heart, which in turn pumps it into the pulmonary artery. The changes in temperature (cooling) measured by the thermistor are graphically displayed versus time as a thermal dilution curve, from which the cardiac output (L/min) and other hemodynamic parameters are automatically derived by an external unit.
Catheters, Cardiac, Dye Dilution definition: Cardiac catheters designed to rapidly inject a bolus of dye (usually indocyanine green) into the venous circulation near the right atrium. These catheters typically consist of a large-bore, flexible tube with end and side holes at its distal tip for high-flow injection; they are usually inserted peripherally. A sample of the blood is usually withdrawn continuously from a peripheral artery and passed through a densitometer, which determines the dye concentration. These catheters are used to determine the cardiac output during catheterization procedures, mostly when thermodilution methods are not appropriate or possible (e.g., quantification of left-to-right shunts in the heart).
Injectors, Thermal Dilution definition: Injectors designed to administer bolus injections of indicator solution (e.g., cooled saline solution) into the heart; providing rapid and consistent injections. These devices typically consist of a pressurized gas system and an electromechanical switch that directs the gas to a piston that delivers the solution into a syringe that in turn injects it through a balloon catheter into the right atrium of the heart. Thermal dilution injectors are used for reproducible cardiac output measurements in cardiac catheterization laboratories and critical care units; they can also be used for determination of cardiac output by injecting a dye and performing a similar indicator-dilution technique.
Pumps, Dye Dilution definition: Syringe pumps designed for drawing blood through a densitometer to produce dye dilution curves for cardiac output determination.
Titer definition: Concentration of a substance in a solution as determined by the quantitative reaction with added measured volume(s) of a solution of the precisely known concentration(s) of a standard reagent.
Auto-High Dilution definition: The dilution of a sample performed by automated equipment. The value is specified by the equipment
Auto-Low Dilution definition: The dilution of a sample performed by automated equipment. The value is specified by the equipment
Rerun Dilution definition: The value of the dilution of a sample after it had been analyzed at a prior dilution value
Pre-Dilution definition: The dilution of the specimen made prior to being loaded onto analytical equipment
Disk dilution definition: Susceptibility, Disk dilution
Homeopathic Dilution Unit definition: A dosing measurement based on the homeopathic dilution unit.
HOMEOPATHIC DILUTION definition: A dosing measurement based on the homeopathic dilution unit.(NCI)
Dilute definition: To reduce in strength or concentration, especially by the addition of water.
 
 
frFrench
dilution definition: Action de diluer ; résultat de cette action.