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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

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Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
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Opioid Analgesics: Morphine and Other Natural Cogeners01:20

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Opioids are a class of drugs that mimic endogenous opioid peptides and act on opioid receptors, and help in pain relief. These compounds are classified as natural, synthetic, or semi-synthetic. Natural opioids, like morphine, codeine, and thebaine, are derived from the opium poppy plant (Papaver somniferum or Papaver album) and are termed opiates. Synthetic opioids are artificial, while semi-synthetic opioids combine natural and synthetic compounds. Morphine, a prototypical opioid, possesses a...
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Opioid Analgesics: Synthetic and Semisynthetic Opioids01:15

Opioid Analgesics: Synthetic and Semisynthetic Opioids

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Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...
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Opioid Receptors: Overview01:22

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Opioid receptors, including the mu (μ, MOR), delta (δ, DOR), and kappa (κ, KOR) types, belong to the rhodopsin family of G protein-coupled receptors. These receptors are located throughout the central and peripheral nervous systems and in non-neuronal tissues such as macrophages and astrocytes. Opioid receptor ligands can be categorized into agonists or antagonists. Highly selective agonists include [d-Ala2, MePhe4, Gly(ol)5]-enkephalin or DAMGO for MOR, [D-Pen2,...
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Drug Abuse and Addiction: Pharmacological Phenomena01:15

Drug Abuse and Addiction: Pharmacological Phenomena

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Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not...
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Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
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Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
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Opioids: Understanding How Acute Actions Impact Chronic Consequences.

Cheryl B Hines, Clara R Owings

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    Opioid overdose and related illnesses are increasing in critical care. Understanding complex opioid effects is key for nurses to manage pain and mitigate adverse events in patients.

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    Area of Science:

    • Pharmacology
    • Critical Care Nursing
    • Toxicology

    Background:

    • Rising admissions for opioid overdose and opioid-related illnesses in intensive care units (ICUs).
    • Opioids remain central to pain management despite significant adverse effects.
    • Previous understanding of opioid receptor signaling was oversimplified.

    Purpose of the Study:

    • To review major opioid-related adverse effects in critical care.
    • To explore the complexities of opioid pharmacodynamics and pharmacokinetics.
    • To provide nurses with strategies to mitigate opioid adverse effects.

    Main Methods:

    • Literature review focusing on opioid pharmacodynamics and pharmacokinetics.
    • Analysis of common adverse effects in critical care settings.
    • Inclusion of a case study for practical application.

    Main Results:

    • Opioid signaling is more complex than previously thought, involving diverse intracellular pathways.
    • Key adverse effects include respiratory depression, tolerance, hyperalgesia, and central sensitization.
    • Understanding these complexities is crucial for effective patient management.

    Conclusions:

    • Nurses require advanced knowledge of opioid pharmacology to address critical care challenges.
    • Mitigation strategies are essential to improve patient outcomes and safety.
    • Further research into opioid alternatives and nuanced management is warranted.