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Drug Accumulation During Multiple Dosing: Repetitive IV Injections01:21

Drug Accumulation During Multiple Dosing: Repetitive IV Injections

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Calculating drug dosage and accumulation in multiple-dose regimens is crucial for achieving therapeutic efficacy while avoiding toxicity. This involves determining the plasma drug concentrations over time to optimize dosing schedules. The principle of superposition is fundamental in this process, allowing for the prediction of drug concentration in plasma following multiple doses based on single-dose data.The principle of superposition asserts that the plasma concentration-time curves from...
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Medications are typically administered to achieve therapeutic effects. Some drugs can modify an individual's mood and perception, frequently resulting in various enjoyable experiences. However, this can result in drug dependency, a condition marked by continuous drug use despite potential negative consequences. Drug dependency primarily falls into two categories: psychological and physical dependence. Psychological dependence occurs when the pleasurable feelings induced by the drug...
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Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
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Drug Dosing: Obese Patients01:21

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In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
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Drug Accumulation During Multiple Dosing: Intermittent IV Infusions01:24

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Intermittent intravenous (IV) infusion is a method of drug administration where medications are delivered over short infusion periods followed by intervals of no drug delivery. This approach helps to prevent sustained high drug concentrations in the bloodstream, reducing the risk of adverse effects associated with prolonged exposure. Unlike continuous infusion, steady-state concentrations may not be achieved during a single dosing cycle but can be reached through repeated...
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Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
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最近注射药物使用者风险行为的变化在奥斯陆2002-2024年

Eirik Opheim1,2, Kristian Malme3, Olav Dalgard2,3

  • 1Agency for Social and Welfare Services, City of Oslo, Oslo, Norway.

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概括

2002年至2024年,在奥斯陆,注射毒品者之间共用针和注射器的数量显著下降. 然而,风险行为在年轻人中仍然很普遍,这凸显了当前的公共卫生挑战.

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科学领域:

  • 公共卫生 公共卫生
  • 传染病流行病学 传染病流行病学
  • 减少危害的策略

背景情况:

  • 在注射毒品的人 (PWID) 之间共享注射器械是血液感染的主要驱动因素.
  • 到2030年实现病毒性肝炎的消除,需要尽量减少这一群体内的风险行为.
  • 了解注射风险行为的趋势对于有针对性的公共卫生干预至关重要.

研究的目的:

  • 评估2002年至2024年间在奥斯陆的PWID中注射风险行为的变化.
  • 在研究期间识别与最近的风险行为相关的因素.
  • 为减少感染在PWID之间传播的战略提供信息.

主要方法:

  • 2002年至2024年在奥斯陆的PWID中进行的八项横截面研究的分析.
  • 每年计算近期 (过去4周) 风险行为的流行率估计.
  • 利用通用估计方程来确定与最近的风险行为相关的因素.

主要成果:

  • 包括1648名参与者,平均年龄为39.4岁,71.7%是男性.
  • 最近共用针/注射器的流行率从2002年的17.8%下降到2024年的4.2%.
  • 与共享相关的因素包括年龄较小,每日注射,以及使用混合海洛因/胺.

结论:

  • 在2002年至2024年期间,在奥斯陆的PWID中观察到近期注射风险行为显著下降.
  • 尽管总体下降,风险行为仍然存在,特别是在年轻人中.
  • 持续的降低危害的努力是进一步降低感染传播的必要条件.