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Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices01:28

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Parenteral drug delivery systems play a crucial role in modern therapeutics by enabling the direct administration of drugs into the systemic circulation, bypassing the gastrointestinal tract. These systems are particularly valuable for poorly absorbed oral medications that are unstable in the digestive environment or require rapid onset or sustained therapeutic levels. Delivery is achieved through intravenous, intramuscular, or subcutaneous routes, each selected based on the drug's properties...
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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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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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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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Injectable silicon oils - complications.

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Injectable silicone oils, used for cosmetic purposes since the 1940s, can cause serious adverse effects. This case highlights potential complications from unknown injectable substances.

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Area of Science:

  • Plastic Surgery
  • Dermatology
  • Toxicology

Background:

  • Injectable silicone oil has been utilized for cosmetic augmentation since the mid-20th century.
  • The popularization of silicone oil injections in the 1960s led to an increase in reported adverse events.
  • Adverse effects associated with cosmetic injections require ongoing investigation.

Observation:

  • A 32-year-old woman received intramuscular injections of an unspecified substance.
  • The patient subsequently developed significant medical complications.
  • The nature of the injected substance was not identified.

Findings:

  • The case underscores the risks of using unverified injectable materials for cosmetic enhancement.
  • Unknown injectable substances can lead to severe and unpredictable health consequences.
  • Detailed patient history and substance identification are crucial in managing complications.

Implications:

  • This case emphasizes the importance of regulatory oversight for cosmetic injectables.
  • Healthcare providers should exercise caution when administering any injectable substance of unknown origin.
  • Further research is needed to understand the long-term effects of non-approved cosmetic injections.