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NG tubes
nasogastric tubes
Question | Answer |
---|---|
gastric decompression | drains stomach contents, relieving stomach and intestines of pressure caused by accumulated gastrointestinal air and fluid |
gastric lavage | irrigation of the stomach used in cases of poisoning or drug overdose to swiftly remove stomach contents if pt cannot swallow emetic meds |
gastric ileus | obstruction of bowel, intestinal contents back up because peristalsis fails although lumen not occluded |
enteral nutrition/gastric gavage | liquid food instilled into stomach through nasogastric tube |
enteral tube feeding | direct delivery of nutrients into GI system, bypassing mouth. enters esophagus, stomach, duodenum, or jejunum |
Levin tube | nasogastric tube with single lumen. Attaches to low intermittent suchtion that prevents adherence to stomach lining. |
gastrostomy tube | tube opening into stomach |
PEG tube | endoscopic percutaneous insertion of muschroom catheter into stomach for feedings |
nursing assessments of pts on tube feedings? | asses for nausea, vomiting, aspiration, fluid and electrolyet imbalance, diarrhea, intestinal cramping, tube occlusion, and hyperglycemia |
how do you assess if feeding is adminstered at a faster rate than can be absorbed (causes nausea & vominting)? | check residual volume left in stomach before formula admin or at periodic intervals if tube feedings are continuous by inserting syringe tip into tube opening |
if residuals are greater than ___ or ___ stop feeding until cause of residual determined | 100 ml or 1/2 of previously administered vol for intermittent feedings |
indications for tube placement? | for gastric decompression, gastric lavage, or gastric feeding |
what are assessments of GI system done before administering nutrition via nasogastric or gastrostomy tube | observe and palpate for distention, tenderness, auscultate bowel sounds, determine time of last bowel movement, assess for presence of existing feeding tube |
how do you confirm placement of tube in stomach before administering feeding? | withdraw sample of stomach contents and check for low pH level, inject 10 mL air into tube while auscultating over epigastrium |
salem sump | double-lumen nasogastric tube, 14-28 Fr, has suction connector and "pigtail" air vent |