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Related Concept Videos

Inhalational Anesthetics: Overview01:20

Inhalational Anesthetics: Overview

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Inhalation anesthetics are drugs that induce general anesthesia upon inhalation. They work by increasing the sensitivity of GABAA receptors or inhibiting NMDA receptors, leading to a decrease in central nervous system activity. The depth of anesthesia can be rapidly adjusted by changing the concentration of the inhaled gas. Some common examples of inhalational anesthetics include volatile liquids like isoflurane, desflurane, sevoflurane and gases like xenon and nitrous oxide. Isoflurane, a...
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Parenteral Anesthetics: Overview01:24

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Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
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Local Anesthetics: Mechanism of Action01:23

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Local anesthetics (LAs) block sensory and motor impulses by inhibiting the sodium channels on the nerve cell membranes. This induces temporary loss of sensation, relieving pain in a specific body area.
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
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General Anesthesia: Overview01:24

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Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
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Local Anesthetics: Adverse Effects01:12

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While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
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Stages of General Anesthesia01:22

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Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
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Immune Modulation by Volatile Anesthetics.

Lindsay M Stollings1, Li-Jie Jia, Pei Tang

  • 1Departments of Anesthesiology (L.M.S., P.T., Y.X.), Immunology (B.L.), Pharmacology and Chemical Biology (P.T., Y.X.), Computational and Systems Biology (P.T.), and Structural Biology (Y.X.), University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; Department of Anesthesiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (L.-J.J.); and Department of Biomedical Sciences, Texas Tech University Health Sciences Center, El Paso, Texas (H.D.).

Anesthesiology
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PubMed
Summary
This summary is machine-generated.

Volatile general anesthetics can suppress or activate the immune system, with effects varying by clinical context. Understanding these dual impacts is key for optimizing perioperative care and patient outcomes.

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Area of Science:

  • Anesthesiology
  • Immunology
  • Pharmacology

Background:

  • Volatile general anesthetics are widely used globally.
  • Their impact on the immune system is complex and debated, with studies showing both immunosuppression and immunoactivation.
  • Conflicting findings stem from diverse research protocols and methodologies.

Purpose of the Study:

  • To provide a balanced review of volatile anesthetic immunomodulation.
  • To discuss mechanisms underlying anesthetic effects on innate and adaptive immunity.
  • To inform clinical guidelines for perioperative management.

Main Methods:

  • Literature review synthesizing existing research on volatile anesthetics and immune responses.
  • Analysis of mechanistic and clinical studies.
  • Discussion of potential immunomodulatory pathways.

Main Results:

  • Volatile anesthetics exhibit dual effects: immunosuppression and immunoactivation.
  • The net effect (detrimental or beneficial) depends on clinical conditions.
  • Both innate and adaptive immune responses, as well as indirect immune effectors, are modulated.

Conclusions:

  • Volatile anesthetics significantly impact immune system function.
  • A comprehensive understanding of these immunomodulatory effects is crucial.
  • This knowledge can lead to improved perioperative strategies and patient care.