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Related Concept Videos

Factors Affecting Drug Distribution: Miscellaneous Factors01:19

Factors Affecting Drug Distribution: Miscellaneous Factors

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Drug distribution in the human body is a complex process influenced by various individual factors, including age, pregnancy, obesity, diet, body water composition, pH levels, and specific disease conditions.
Age plays a significant role due to differences in body composition among different age groups. Infants, for instance, have a higher proportion of total body water and lower albumin levels, a protein that binds drugs in the bloodstream. This unique composition in infants enhances the...
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Factors Affecting Drug Distribution: Tissue Permeability01:30

Factors Affecting Drug Distribution: Tissue Permeability

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The drug distribution process within the human body is a complex interplay of various physicochemical properties inherent to the drugs. These properties, including molecular size, ionization degree, partition coefficient, and stereochemical nature, significantly impact how drugs permeate biological membranes to reach their target tissues.
Small molecules with a molecular weight below 500 to 600 Daltons can easily pass through the capillary membrane, gaining access to different tissues. Larger...
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Factors Affecting Drug Distribution: Physiological Barriers01:23

Factors Affecting Drug Distribution: Physiological Barriers

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Drug distribution in the body is intricately regulated by various physiological barriers that control the passage of substances. These include the capillary endothelial barrier, the blood-brain, blood-cerebrospinal fluid, blood-placental, and blood-testis barriers.
The capillary endothelial barrier allows only smaller molecules below 600 Da (Daltons) to pass through. It also restricts drugs like heparin that are bound to blood components, limiting their movement within the bloodstream.
The...
699
Factors Affecting Drug Distribution: Organ Perfusion Rate01:15

Factors Affecting Drug Distribution: Organ Perfusion Rate

565
Drug distribution within the body is a complex process influenced by several factors, including perfusion rate, the rate at which the bloodstream transports drugs to tissue. This limitation becomes particularly significant when dealing with highly lipophilic drugs. In such cases, the rate at which the drug can move across membranes is crucial, and if the membrane is highly permeable to the drug, distribution becomes rate-limited by perfusion.
Perfusion rate-limited distribution relies on the...
565
Factors Affecting Renal Clearance: Drug Distribution and Drug Interactions01:09

Factors Affecting Renal Clearance: Drug Distribution and Drug Interactions

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Renal clearance plays a pivotal role in drug elimination from the body and can be influenced by drug distribution and interactions. Understanding these factors is crucial in pharmacology as they impact the effectiveness and duration of drug therapy.
One important factor is the relationship between renal clearance and the apparent volume of distribution. Renal clearance tends to be inversely proportional to the apparent volume of distribution. Drugs with an extensive distribution volume or those...
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Emerging Adulthood01:27

Emerging Adulthood

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Jeffrey Arnett's concept of emerging adulthood offers a framework to understand the unique developmental stage between adolescence and full-fledged adulthood, generally from ages 18 to 25. This period is marked by extensive exploration and shifts in identity, relationships, and career choices, a process known in psychology as role experimentation. Emerging adulthood reflects the evolving cultural expectations surrounding adulthood and the dynamic process of personal transformation during...
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Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
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Factors Associated With Emergency Department Distribution of Fentanyl Test Strips.

Marina Gaeta Gazzola, Chelsea Hayman, Danielle Wright

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    Summary

    Fentanyl test strips (FTS) can help reduce drug risks. This study found that distributing FTS in emergency departments alongside take-home naloxone (THN) is feasible and identifies patient characteristics that can optimize FTS ordering.

    Keywords:
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    Area of Science:

    • Public Health
    • Emergency Medicine
    • Addiction Science

    Background:

    • Fentanyl test strips (FTS) offer a harm reduction strategy by allowing individuals to check for fentanyl in unregulated drug supplies.
    • Despite their potential, FTS are underutilized in clinical settings, particularly emergency departments (EDs).
    • Take-home naloxone (THN) is a standard-of-care intervention for overdose prevention in EDs.

    Purpose of the Study:

    • To describe the distribution of FTS within a large New York City health system's EDs.
    • To compare the characteristics of ED visits where FTS were distributed versus those receiving only THN.
    • To identify opportunities for optimizing FTS distribution strategies in emergency settings.

    Main Methods:

    • A retrospective review of THN and FTS provision was conducted over one year in a major urban health system.
    • Data included demographic and clinical characteristics of ED visits.
    • Characteristics of visits with FTS distribution were compared to visits with THN only.

    Main Results:

    • FTS were provided to 436 individuals across 1376 eligible visits, alongside THN for 1279 individuals.
    • FTS receipt was associated with younger age, male gender, non-White race, lack of commercial insurance, and substance-related chief complaints or diagnoses.
    • Factors associated with lower FTS receipt included older age, non-community hospital sites, and non-attending clinicians.

    Conclusions:

    • Integrating FTS distribution into existing ED THN programs is feasible and does not disrupt clinical workflows.
    • Significant differences exist between ED encounters involving FTS distribution and those receiving THN only.
    • These findings highlight specific patient populations and clinical scenarios where FTS distribution can be optimized.