Chapter 40 Gastric & Duodenal Disorders Flashcards
Gastritis
Inflammation of the gastric & stomach mucosa
- Can be acute (lasting several hours- few days) or chronic (repeated exposure to irritating agents or recurring gastritis)
Prevalence of Gastritis
Common GI problem accounts for 2 Million visits to outpatient clinics annually in the United States
What are the 2 types of acute gastritis?
Erosive & Non-erosive Gastritis
Erosive Gastritis
Caused by long-term use of nonsteroidal anti-inflammatory drugs
(NSAIDS, ex: ibuprofen, alcohol abuse, and recent exposure to radiation therapy)
Non-Erosive Gastritis
Often caused by spiral-shaped, gram (-) Heliobacter pylori (H.pylori)
Prevalence of H. pylori Infections
~50% of individuals globally
Stress-Related Gastritis
May develop in acute illnesses when the patient has had major traumatic injuries, burns, severe infection, lack of perfusion to stomach lining, or major surgery
Severe Acute Gastritis
Caused by ingestion of strong acids or alkali-> mucosa may either become gangrenous or perforation
- Scarring causes pyloric stenosis or obstruction
Pathophysiology of Gastritis
Gastritis is a disruption of the mucosal barrier that protects the stomach tissue from digestive juices.
In gastritis, the gastric mucous membrane becomes edematous and hyperemic (congested with fluid and blood) and undergoes superficial erosion.
Superficial ulcerations may occur as a result of erosive disease and leads to ->hemorrhage
Clinical Manifestations of Acute Gastritis
Anorexia
Epigastric pain (rapid onset)
Hematemesis: Vomiting blood
Hiccups
Melena or hematochezia
Nausea and vomiting
Clinical Manifestations of Chronic Gastritis
Belching
Early satiety
Intolerance of spicy/fatty foods
Nausea and vomiting
Pyrosis (heartburn)
Sour taste in the mouth, halitosis
Vague epigastric discomfort relieved by eating and inability to absorb vitamin B12
Possible signs of shock
Anemia
Fatigue
Dyspepsia
Indigestion
Upper abdominal discomfort associated w/eating
Hematochezia
Bloody stool
Pyrosis
Heartburn
Burning sensation in the stomach & esophagus that moves up to the mouth
How is a patient dx w/ gastritis?
The definitive dx is determine by an endoscopy and histologic exam of a tissue specimen obtained by biopsy
Medical Management of Gastritis
NGT, IV Fluids, Fiberoptic endoscopy, antacids, H2 blockers (ex. famotidine, ranitidine), proton pump inhibitors (ex. omeprazole, lansoprazole)
In extreme cases surgery is required to remove gangrenous or perforated tissue
Ex: Gastric resection or a Gastrojejunostomy (anastomosis of jejunum to stomach to detour around
the pylorus), this is necessary to treat pyloric obstruction
Chronic gastritis is managed by modifying the pt’s diet, promoting rest, reducing stress, recommending avoidance of alcohol and NSAIDS, and initiating medications that may include antacids, H2 blockers, or proton pump inhibitors
Nursing Management of Gastritis: Managing Anxiety
The nurse offers supportive therapy
& uses a calm approach to assess
the pt and answer all questions
Nursing Management of Gastritis: Promoting Optimal Nutrition
Pt should refrain from alcohol and food until symptoms subside
A nonirritating diet is introduced when pt is able to take nourishment by mouth
- IV Fluids are needed if symptoms persist
- Fluid I & O w/electrolytes are closely monitored
As food is introduced, nurse evaluates & reports any symptoms that suggest a repeat episode of gastritis
NO caffeinated beverages & NO smoking!! Caffeine is a stimulant that increases gastric activity & pepsin secretions. Nicotine will increase gastric acid secretions & interfere w/ GI mucosal barrier
Nursing Management of Gastritis: Promoting Fluid balance
Daily I’s & O’s to detect early signs of dehydration
- Minimal fluid intake 1.5L/day
- Urine output: < 1mL/kg/hr
If NPO:
- IV fluids 3L/day usually are prescribed
- Record of 1 L of 5% dextrose in water= 170 cal of carbs need to be maintained
Electrolyte values (Na+, K+, & Cl -) are assessed every 24 hrs to detect any imbalances
Be alert of any signs of hemorrhagic gastritis
- Hematemesis
- Tachycardia
- Hypotension
All stools should be examined for the presence of frank or occult
Nursing Management of Gastritis: Relieving Pain
Instruct patients to avoid foods & beverages that may irritate the gastric mucosa as well as correct use of meds to relieve chronic gastritis
Nurse must regularly assess the patient’s level of pain & extent of comfort achieved through use of meds & avoidance of irritating substances
Gastric Outlet Obstruction
Any condition that medically impedes normal gastric emptying
Pyloric Obstruction
Obstruction of the channel of the pylorus & duodenum through which the stomach empties
Peptic Ulcer
An excavation (hollowed-out area) that forms in the
mucosal wall of the stomach, in the pylorus, duodenum, or esophagus
- Can be referred to as gastric, duodenal, esophageal, or pyloric ulcer
Pylorus
Opening between the stomach & duodenum
Duodenum
1st part of small intestine between stomach & jejunum