Volume of distribution of chloroquine

Discussion in 'Canada Pharmacy Online' started by boreus, 22-Feb-2020.

  1. kostyk User

    Volume of distribution of chloroquine


    Conceptual illustration of effect of drug distribution into tissue space on V: Consider 100 mg of a drug is added to 1 L of water in a beaker under two circumstances and the liquid is sampled for drug concentration (C). , also known as apparent volume of distribution) is the theoretical volume that would be necessary to contain the total amount of an administered drug at the same concentration that it is observed in the blood plasma.) is possible, and would indicate that the drug is highly distributed into tissue.

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    The anti-malaria drug chloroquine, which has a very high volume of distribution 13,000 L due to diffusion to adipose tissue. Its excretion is slow and the drug has a half-life of 214 hours. What is the expected clearance rate of the drug? Plasma volumes of distribution up to 65,000 L for chloroquine and 44,257 L for hydroxychloroquine have been reported 71, 75, 77. Normalized by body mass, reported volumes of distribution for chloroquine have ranged from 204 to 800 L/kg depending on the sensitivity of the method of detecting chloroquine. In our studies, a total of 431 plasma samples were prepared from 22 healthy subjects and 69 patients with vivax malaria for three different studies studies Ia, Ib, and II. In study Ia, a single dose of HCQ sulfate of 400 mg 310 mg as HCQ was administered to six healthy South Korean male volunteers and serial.

    Volume of distribution may be increased by kidney failure (due to fluid retention) and liver failure (due to altered body fluid and plasma protein binding). The initial volume of distribution describes blood concentrations prior to attaining the apparent volume of distribution and uses the same formula. In rough terms, drugs with a high lipid solubility (non-polar drugs), low rates of ionization, or low plasma protein binding capabilities have higher volumes of distribution than drugs which are more polar, more highly ionized or exhibit high plasma protein binding in the body's environment.

    Volume of distribution of chloroquine

    Volume of distribution - Wikipedia, Pharmacology of Chloroquine and Hydroxychloroquine Ento Key

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  3. Although the high volume of distribution tells us that chloroquine distributes into compartments other than 1. - 4, and the concentration in those compartments is probably higher than the concentrations in blood, the GG data do not tell us how low the concentration in blood can be to yield a concentration of 32 microg/ml in Bb cyst infected tissue.

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    The volume of distribution for chloroquine is so large because this lipophilic drug log P = 4.7 partitions into tissue fat; whereas digoxin log P = 0.85 large volume is attributed to its binding to muscle ATPases. Large volume of distribution 50 L/kg; Prolonged half life of several weeks 50% of chloroquine is excreted unchanged; Resuscitation Coma Prompt intubation and ventilation, if acidaemia exists, give sodium bicarbonate 1 – 2 mmol/Kg IV to prevent further toxicity during intubation. End goals should be a narrow QRS 100ms and a pH 7.45 Volume of distribution has nothing to do with the actual volume of the body or its fluid compartments but rather involves the distribution of the drug within the body. For a drug that is highly tissue-bound, very little drug remains in the circulation; thus, plasma concentration is low and volume of distribution is high.

     
  4. PavelBel Guest

    People with flu can spread it to others up to about 6 feet away. CDC H1N1 Flu Arthritis and Flu – for Patients Coronavirus Vs. Flu What’s the Difference? Updates on chloroquine and hydroxychloroquine working.
     
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  6. DM-S Moderator

    The efficacy of sulfadoxine–pyrimethamine alone and in combination with. Objective To compare the efficacy of sulfadoxine–pyremethamine SP + chloroquine CQ combination treatment against falciparum malaria with SP treatment alone. Method In‐vivo study of 254 patients with uncomplicated Plasmodium falciparum malaria in rural eastern Sudan, where the population is semi‐immune.

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