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Delivery Mechanisms

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A brief overview of different delivery mechanisms.

Publicado en: Empresariales, Tecnología
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Delivery Mechanisms

  1. 1. DELIVERY MECHANISMS
  2. 3. ORAL NUTRIENT DELIVERY
  3. 4. TABLETS
  4. 5. CAPSULES
  5. 7. FEEDING TUBE DELIVERY
  6. 8. J TUBE (J EJUNOSTOMY TUBE OR PEJ TUBE) <ul><li>this tube is place surgically by making a small incision in the abdominal wall </li></ul><ul><li>the J-tube is connected directly to the patient's small intestine and nutrients completely bypass the stomach with this type of tube feeding </li></ul><ul><li>usually the tube is placed towards the centre of the abdomen and connected to the upper portion of the small intestines , with sutures sometimes used to hold the tube in place </li></ul><ul><li>a feeding pump which pumps a predetermined amount of nutrient mix into the tube must be used with this kind of feeding tube setup </li></ul>
  7. 9. G TUBE ( PEG-TUBE, MUSHROOM, MIC OR MALECOT TUBE) <ul><li>the G-Tube is connected directly to the patient's stomach through an incision made in the abdominal wall structure </li></ul><ul><li>this kind of feeding tube is designed for long term tube feeding and its placement is generally on the left hand side of the abdominal cavity slightly below the ribs </li></ul><ul><li>gastric leakage can occur with this tube placement and the corrosive nature of the gastric juices found in the stomach can irritate the skin around the incision if there is leakage </li></ul><ul><li>proper cleaning and gauze covering are done to minimize this irritation </li></ul>
  8. 10. NG TUBE (NASOGASTRIC TUBE) <ul><li>ng tubes are placed into the nostrils of the patient </li></ul><ul><li>the tubes are smaller than the tubes used in surgical placements and they run through the nose down the oesophagus into the stomach </li></ul><ul><li>the tube's placement must be checked and adjusted before each feeding </li></ul><ul><li>surgical tape is often used to secure the tube to the nose </li></ul>
  9. 11. FEEDING TUBE DELIVERY
  10. 12. GRAVITY DRIP METHOD <ul><li>uses gravity to deliver nutrients through the feeding tube, similar to the method used to deliver I.V. doses of medications </li></ul><ul><li>a formula bag is connected via tubes to the feeding tube and hung on an I.V. rack that is above the patient </li></ul><ul><li>ice pouches may be attached to the drip bag to keep the formula cool and a roller clamp placed on the bag's tube controls the flow of the formula </li></ul><ul><li>bags are usually changed every 24 hours to reduce the risk of bacteria in the formula and to ensure fresh formula is being used </li></ul>
  11. 13. BOLUS/SYRINGE METHOD <ul><li>uses a syringe needle to deliver the nutrient formula into the outside opening of the feeding tube </li></ul><ul><li>the nurse or doctor measures the amount of formula needed for the patient and pours it into a syringe </li></ul><ul><li>the syringe tip is placed inside the feeding tube opening and as the syringe top is depressed, the fluid flows into the tube </li></ul>
  12. 14. PUMP FEEDING <ul><li>is controlled by a device powered by battery or electricity </li></ul><ul><li>the amount of formula to be delivered is determined by the doctor and adjusted accordingly on the device's interface controls </li></ul><ul><li>this method is used for J-Tube feeding tube connections to move the food through the tube and ensures that is makes it into the small intestines </li></ul>
  13. 16. TRANS DERMAL DELIVERY <ul><li>a trans dermal patch or skin patch is a medicated adhesive patch that is placed on the skin to deliver a specific dose of medication through the skin and into the bloodstream </li></ul><ul><li>an advantage of a trans dermal drug delivery route over other types such as oral, topical, etc is that it provides a controlled release of the medicament into the patient </li></ul><ul><li>trans dermal patches currently available include the nicotine patch, and Fentanyl, an analgesic for severe pain , patches administering estrogen for menopause, angina, pain relievers for shingles (herpes zoster), for pain from acute injuries and chronic pain </li></ul><ul><li>recent developments expanded their use to the delivery of hormonal contraceptives, anti depressants and even pain killers and stimulants for Attention Deficit Hyperactivity Disorder/ADHD </li></ul>
  14. 18. INTRAVENOUS DELIVERY <ul><li>intravenous therapy or IV therapy is the giving of liquid substances directly into a vein </li></ul><ul><li>it is commonly referred to as a drip because many systems of administration employ a drip chamber, which prevents air entering the blood stream (air embolism) and allows an estimate of flow rate </li></ul><ul><li>the simplest form of intravenous access is by passing a hollow needle through the skin directly into the vein which can be connected directly to a syringe or may be connected to a length of tubing </li></ul><ul><li>compared with other routes of administration, the intravenous route is the fastest way to deliver fluids and medications throughout the body </li></ul>
  15. 19. ORAL ALGORITHM <ul><li>see the oral algorithm </li></ul>
  16. 20. ENTERAL AND PARENTERAL NUTRITION ALGORITHM <ul><li>see the enteral and parenteral nutrition algorithm </li></ul>
  17. 21. SELECTION CRITERION
  18. 22. THANK YOU

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