GI Exam 2 Flashcards
Pathogenic N/V
related to disease
Iatrogenic N/V
stemming from disease treatment (chemo)
Psychogenic N/V
Resulting form psychological state (Stress)
4 causes N/V
pathogenic, iatrogenic, psychogenic, fluid and electrolyte imbalance
Pathophysiology of vomiting
vomiting is caused by stimulation of the chemo-receptor trigger zone which stimulates the vomiting center in the medulla by some type of stimulus
Subjective assessment N/V
patient identifies factors preceding or related to N/V
objective assessment N/V
time of vomiting, color, amount, consistency of emesis, fluid and electrolytes, dehydration
Nurse management of N/V
NPO until tolerate fluids (clear) HOB elevated replace fluid and electrolytes NG tube good mouth care
N/V diet
effervescent fluids, bland food
N/V medications
Zofran (prevent nausea)
Reglan (increase fastric emptying)
Gastritis
inflammation of the fastric mucosa
cause- H Pylori, long term NSAID and steroids, ETOH
Acute Gastritis
S&S: epigastric pain, anorexia, N/V
Dx: H. Pylori testing (stool blood)
Treatment acute gastritis
NPO, fluid and electrolyte replacement
antiemetics
eliminate cause
Chronic gastritis
Recurrent inflammation (autoimmune) no intrinsic factor produced- pernicious anemia closelt associated with gastric CA Tx: avoid irritant, B12 injections for life
Upper GI bleed
atrial- bright red (hematoemesis)
venous- slow ooz (coffee ground emesis)
Upper GI bleed causes
medication (asprin, NSAID, steroid)
esopageal varices
ulcers
Upper GI bleed diagnosis
endoscopy, barium swallow, cat scan , bleed scan
Upper GI bleed Emergency treatment
Assess VS shock
IV fluid, NG tube
oxygen
Peptic ulcer disease
Erosion of the GI mucosa resulting from digestive action of HCl and pepsin
Acute peptic ulcer disease
superficial efoision and minimal inflamation
Chronic peptic ulcer disease
long duration
erosion thru muscular layer
fibrosis and scar tissue form
Causes of peptic ulcers
gram neg bacteria- H. pylori. drug induced. stress induce
tx- antibiotics
Gastic ulcer
normal or increased acid secretions.bile reflux from duodenum
Duodenal ulcer
increased acid secretion from increase parietal cell
hypersecretion occurs at unusual times-between meals and at night
S&S peptic ulcer
burning, gnawing pain, pain worse on empty stomach, pain awakens patient at night
Treatment peptic ulcers
Drug therapy- antacids, PPI, abx
bland diet
avoid stress
Antacids
neutralizes gastric acid
give 1-3 hours after meals and at bed time
Histamin receptor antagonists
block H2 receptor to reduce HCl acid secretions (zantac)
Proton pump inhibitor
stop secretion of HCl to raise stomach pH (protonix)
Anticholinergics
inhibit gastric secretion, decrease gastric motility
SE: DRY MOUTH, N/V, DECREASE VISUAL ACUITY, URINARY RETENTION
Sucralfate
covers ulcer and prevents erosion
Reglan
increases gastric motility and emptying. aniemetic
Most common complication of peptic ulcer
hemorrhage
hematemesis or melana first sign
tx- saline lavage and cautorize ulcer
Perforation
most serious complication of peptic ulcer
gastric contence spill into peritoneal cavity = peritonitis
S&S- sudden abdominal pain, board abdomen, absent bowel sounds, shallow RR, shock