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

Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices

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...
Parentral Nutrition: Centeral and Peripheral Parental Nutrition01:27

Parentral Nutrition: Centeral and Peripheral Parental Nutrition

Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
Lipid Absorption01:24

Lipid Absorption

Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
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Routes of Drug Administration: Parenteral01:25

Routes of Drug Administration: Parenteral

The administration of drugs via parenteral routes allows for direct drug introduction into the systemic circulation, resulting in high bioavailability because the medication bypasses the harsh conditions of the gastrointestinal tract and hepatic metabolism.
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Bioavailability Enhancement: Drug Permeability Enhancement01:27

Bioavailability Enhancement: Drug Permeability Enhancement

After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
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Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ meats, shellfish,...

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A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
04:53

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Lipid emulsions - Guidelines on Parenteral Nutrition, Chapter 6.

M Adolph1, A R Heller, T Koch

  • 1Dept. of Anaesthesiology and Intensive Medicine, Eberhard-Karl University, Tuebingen, Germany.

German Medical Science : GMS E-Journal
|January 6, 2010
PubMed
Summary

Parenteral nutrition lipid emulsions are crucial for energy and essential fatty acids, recommended within 7 days of starting therapy. Optimizing the lipid-glucose ratio and monitoring triglycerides can prevent complications like hyperglycemia and hepatic steatosis.

Keywords:
alpha-tocopherolcritically illhepatic steatosislipid emulsionspolyunsaturated fatty acids

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Area of Science:

  • Clinical Nutrition
  • Metabolism
  • Intensive Care Medicine

Background:

  • Lipid emulsions are vital for energy and essential fatty acid supply in parenteral nutrition (PN).
  • Early administration (within 7 days) of lipid emulsions prevents essential fatty acid deficiency.
  • High glucose intake in low-fat PN increases hyperglycemia risk.

Purpose of the Study:

  • To outline recommendations for optimal lipid emulsion use in parenteral nutrition.
  • To address the prevention of hyperglycemia and essential fatty acid deficiency.
  • To guide the management of lipid administration in critically ill patients.

Main Methods:

  • Review of current guidelines and evidence regarding lipid emulsion administration in PN.
  • Analysis of the impact of lipid-glucose ratio on glycemic control.
  • Recommendations for monitoring triglyceride levels and vitamin E co-administration.

Main Results:

  • Lipid emulsions should constitute 25-40% of non-protein energy, potentially up to 50-60% in specific cases.
  • A low phospholipid/triglyceride ratio is recommended to prevent hepatic steatosis and hyperglycemia.
  • Continuous vitamin E administration reduces lipid peroxidation.

Conclusions:

  • Optimizing lipid emulsion administration in PN is key to preventing complications.
  • Careful monitoring of triglycerides and appropriate lipid-glucose ratios are essential for patient safety.
  • Further research may clarify the impact of different lipid emulsion types on clinical outcomes.