final Flashcards
(150 cards)
EN
- tube feeding
- pertaining to the intestine
- providing nutrition directly into the GI tract
PN
- pertaining to beside the intestine
- IV nutrition
- PPN and CPN
- TPN is outdated term
when is EN needed
- inability to eat/eat enough
- impaired digestion, absorption, metabolism
- gut works
contraindications of EN
- illeus
- complete obstruction of small or large bowel
- severe diarrhea without response to medication
- intractable vomiting
- high output external fistual
- hypovolemic or septic shock
- very poor prognosis
short term access routes
nasogastric, orogastric, nasoenteric (if patient is at risk for aspiration, esophageal reflux, or delayed gastric emptying
long term access routes
PEG, PEJ (decrease risk of tube feeding related aspiration)
prepyloric feeding
- delivering nutrition into the stomach
- standard method
- NG tube, PEG
post pyloric feeding
- delivering nutrition past the pyloric valve, into the small intestine
- used when gastric emptying is impaired, high risk of aspiration, severe gastric reflux, intestinal surgery history
- ND tube, jejunostomy
elemental/semi elemental EN formula
- broken down/hydrolyzed macronutrients
- used for patients with enzyme deficiency, malabsorption, or other conditions resulting in maldigestion
continuous tube feeding
administered over 8-24 hours daily
using pump to control feeding rate
intermittent tube feeding
administered several times daily, over 20-30 min
using pump to control flow rate, or by gravity drip
bolus tube feeding
administration of 250-500 mL of formula several times daily, using syringe to inject feedings through the tube
ASPEN initiation and advnacement of EN
initate at 10-40 mL/h
advance by 10-20 mL/h every 6-8 hours to gaol rate
ASPEN goals for non critically and critically ill
non critically: meet 80% of needs by 24-48h after initation
critically ill: initate EN within 24-48 h of admission (hemodynamically stable). meet 80% of needs by 72h after initiation
ASPEN gastric residuals for monitoring tube feeding requirement
recommends against routine monitoring of gastric residuals
avoid holds on EN when gastric residuals are <500mL without other signs of intolerance
refeeding syndrome
- potentially fatal
- large risk for malnourished people who begin nutrition support
- when a patient begins nutrition support, serum P, K, and Mg, will be abnormally low
- prevented by low initation/advancement of EN. avoid fluid overlead
free water flushes
- flushing the feeding tube to prevent clogs and provide additional fluid requirements
- min 30 mL every 4 hours for continuous feeding, or before/after intermittent feeding
propofol/diprivan
- medication/sedative for mechanically ventilated critically ill
- provides 1.1 kcal/mL, goes towards lipids
- mL/h * 24 hours * 1.1 kcal/mL = kcal/d
nasogastric
- short term
- nose to stomach
- used when ok to have nasal placement
nasoenteric
- short term
- nose to small intestine
- preferred if patient is at risk for aspiration, esophageal reflux, or delayed gastric emptying
PEG (percutaneous endoscopic gastrostomy)
- long term
- less expensive, easy to insert, allows for bolus feeds
PEJ (percutaneous gastrojejunostomy)
- long term
- decrease risk of tube feeding related aspiration, feeding pump required
peripheral parenteral nutrition (PPN)
- administration of large volume, dilute solutions of nutritents into a small peripheral vein in the arm or back of the head
- short term
- most often used while awaiting a central line placement
- risk of vein collapse
- osmolarity must be <900 mOsm/L
- inappropriate for fluid restricted patients
- difficult ot maintain peripheral vein access for more than a few days
central parenteral nutrition (CPN)
PICC
inserted in the arm and threaded into subclavin vein to the vena cava
long term