effective dose definition
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- Freebase(0.00 / 0 votes)Rate this definition: An effective dose in pharmacology is the dose or amount of drug that produces a therapeutic response or desired effect in some fraction of the subjects taking it. The median effective dose is the dose that produces a quantal effect in 50% of the population that takes it.
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How Is Radiation Exposure Measured? By measuring the radiation level around a person's body using a Geiger counter, a safety officer can approximate that person's absorbed dose. A more sophisticated measure of radiation exposure, called the effective dose, accounts for the harmfulness of the specific type of radiation present.
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toxic dose TD 50 Toxicology The calculated dose of a chemical introduced by a route other than inhalation, that would cause a specific toxic effect in 50% of a defined experimental animal population Cf Lethal concentration, Lethal dose.
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- Full Definition of DOSAGE. 1. a: the addition of an ingredient or the application of an agent in a measured dose b: the presence and relative representation or strength of a factor or agent.
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Sievert The sievert is used for radiation dose quantities such as equivalent dose, effective dose, and committed dose. It is used both to represent the risk of the effect of external radiation from sources outside the body, and the effect of internal irradiation due to inhaled or ingested radioactive substances.he sievert is used for a number of dose quantities which are described in this article and are part of the international radiological protection system devised and defined by the ICRP and ICRU.
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Measuring Radiation The units for absorbed dose are the radiation absorbed dose (rad) and gray (Gy). Dose equivalent (or effective dose) combines the amount of radiation absorbed and the medical effects of that type of radiation. For beta and gamma radiation, the dose equivalent is the same as the absorbed dose.
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- Definition of effective for Students. 1  1 : producing or able to produce a desired effect effective medicines. 2  2 : impressive an effective speech. 3  3 : being in operation The rule is effective immediately.
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Hospital Centennial The vaccine was not tested again because penicillin became available for treating pneumococcal pneumonia. But even with antibiotics, pneumococcal infection continued to be a major cause of death, with more than 50,000 deaths each year in the United States in the early 1970s.
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Effective rate Effective interest rate = (1 + .03/12)^12 - 1 = .0304 = 3.04%, where .03 is the simple interest rate and 12 is the number of times in a year interest is compounded. It is also known as the annual effective rate or the annual equivalent rate. See also: Stated annual interest rate, annual percentage yield.
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What is the effective interest rate? What is the effective interest rate? The effective interest rate is the true rate of interest earned. It could also be referred to as the market interest rate, the yield to maturity, the discount rate, the internal rate of return, the annual percentage rate (APR), and the targeted or required interest rate.
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dose [dōs] the quantity to be administered at one time, as a specified amount of medication or a given quantity of radiation. absorbed dose that amount of energy from ionizing radiations absorbed per unit mass of matter, expressed in rads. air dose the intensity of an x-ray or gamma-ray beam in air, expressed in roentgens.
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unit dose unit dose. a method of preparing medications in which individual doses of patient medications are prepared by the pharmacy and delivered in individual labeled packets to the patient's unit to be administered by the nurses on an ordered schedule. One intent of unit dose is to decrease administration error.
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Effectiveness However, neither effectiveness, nor effectively, inform about the direction (positive or negative) and the comparison to a standard of the given effect. Efficacy, on the other hand, is the extent to which a desired effect is achieved; the ability to produce a desired amount of the desired effect, or the success in achieving a given goal.
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- effective dose. Definition: the dose that produces a specific effect; when followed by a subscript (generally “ED50”), it denotes the dose having such an effect on a certain percentage (50%) of the test animals; ED50 is the median effective dose.
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Units Dose: A general term used to refer to the effect on a material that is exposed to radiation. 1  Gray (Gy): The international system (SI) unit of radiation dose expressed in terms of absorbed energy per unit mass of tissue. 2  Sievert (Sv): A sievert is the standard international measurement of dose. 3  rad (R): The original unit developed for expressing ...
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effective dose Definition: 1  the dose that produces a specific effect; when followed by a subscript (generally “ED50”), it denotes the dose having such an effect on a certain percentage (50%) of the test animals; ED50 is the median effective dose.
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- Definition of effective age. 1  actual age The years since a structure was built. Differs from effective age. 2  appraised value An educated opinion of how much a property is worth.  assessed value (AV, ast) A municipal or provincial government's determination of a property's worth for tax purposes.
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Maintenance dose This is not to be confused with a dose regimen, which is a type of drug therapy in which the dose [mg] of a drug is given at a regular dosing interval on a repetitive basis. Continuing the maintenance dose for about 4 to 5 half lives (t ½) of the drug will approximate the steady state level. One or more doses higher than the maintenance dose can be given together at the beginning of therapy with a loading dose.
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- median lethal dose (LD 50) the quantity of an agent that will kill 50 per cent of the test subjects; in radiology, the amount of radiation that will kill, within a specified period, 50 per cent of individuals in a large group or population.ee also median effective dose. erythema dose that amount of radiation that, when applied to the skin, causes erythema (temporary reddening). fatal dose lethal dose.
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- Effective Nuclear Charge Definition. The effective nuclear charge is the net charge an electron experiences in an atom with multiple electrons. The effective nuclear charge may be approximated by the equation: Z eff = Z - S
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dose median lethal dose. or. mean lethal dose. n. 1. (Medicine) the amount of a drug or other substance that, when administered to a group of experimental animals, will kill 50 per cent of the group in a specified time. 2. (Medicine) the amount of ionizing radiation that will kill 50 per cent of a population in a specified time. Abbreviation: LD50.
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dose infective dose (ID) that amount of a pathogenic agent that will cause infection in susceptible subjects. See also median infective dose and tissue culture infective dose. lethal dose (LD) that quantity of an agent that will or may be sufficient to cause death.See also median lethal dose and minimum lethal dose.loading dose a dose of medication, often larger than subsequent doses, administered for the purpose of establishing a therapeutic level of the medication.ee also median effective dose. erythema dose that amount of radiation that, when applied to the skin, causes erythema (temporary reddening). fatal dose lethal dose.
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Lethal dose The value of LD 50 for a substance is the dose required to kill half the members of a tested population after a specified test duration. LD 50 figures are frequently used as a general indicator of a substance's acute toxicity. A lower LD 50 is indicative of increased toxicity.
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Efficacy definition in pharmacodynamics Efficacy: Broadly, efficacy refers to the capacity of a drug to produce an alteration in a target cell/organ after binding to its receptor. A competitive antagonist, that occupies a binding site without producing any alteration in the receptor, is considered to have an efficacy of zero. Efficacy is generally independent of potency/affinity, and is related to the maximum effect that a particular drug is capable of producing.
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Effective Nuclear Charge Definition Effective Nuclear Charge Definition The effective nuclear charge is the net charge an electron experiences in an atom with multiple electrons. The effective nuclear charge may be approximated by the equation:
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Symptoms that Might Indicate a Heart Problem This is a list of the most common symptoms that might indicate a heart problem in children. In most cases, children with these symptoms don't have heart problems. For instance, some children naturally sweat more, and many children sweat while they sleep. Palpitations may be caused by caffeine.