TPN Flashcards
parenteral nutrition
nutrients administered intravenously and can be given in conjunction with enteral feeding to meet body requirements
most common
- dextrose
carbs
dextrose
part of carbs
- easily metabolized, stimulates insulin secretion, helps to create proteins
fat emulsion; fatty acids; soy bean and egg yolk; isotonic
- concentrated source of calories
- available in 10, 20, 30 %
- is a good medium for bacterial growth which can cause infection
lipids
proteins
- concentrations range from 5-15 %
- meds can be added but only by pharmacy
amino acids
- meet caloric needs until patient can be transitioned to enteral nutrition (maintain body ability to fight infection)
- transition to enteral to prevent cell shrinkage
- preventing complications like septicemia
goal of PN
- patients unable to digest or absorb enteral nutrition (non functional GI and extended bowel rest)
- highly stressed psychological states (sepsis, head injury, burns)
- perioperative TPN (bowel rest)
indications for PN
Marasmus
starvation
kwashiorkor
extended bowel but still starvation
effects of malnutrition
decreased wound healing, muscle mass
increased risk of fall, infection
BMI less than 18.5
underweight
BMI 18.5-24.9
desirable
BMI 25-29
overweight
Albumin
protein synthesized by liver; prevents fluid from leaking into interstitial spaces
- found in plasma
Transferrin
transports iron in plasma and synthesized in liver
prealbumin
required for thyroxine transport
nitrogen balance
indicator of gain or loss of protein
hair assessment findings
dull, thin, dry
nail assesment findings
thin and concave
heart assessment findings
tachycardic, enlarged
abdomen assessment findings
hepatomegaly