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Transcript of Nur 4206 The Patient with Digestive Disorders By Linda Self.
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Nur 4206The Patient with
Digestive Disorders
By Linda Self
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GI Changes associated with Aging Atrophy of the gastric mucosa resulting in hypochlorhydria Decreased peristalsis which results in constipation Calcification of pancreatic vessels occurs with a decrease in lipase
production Diminished size of liver with resultant decreased enzyme activity.
Decreased enzyme activity depresses drug metabolism which leads to an accumulation of drugs.
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Lab Assessment of the GI System CBC Clotting factors Serum electrolytes Serum enzymes such as AST (aspartate aminotransferase) and ALT
(alanine aminotransferase) Amylase and lipase Bilirubin—primary pigment in bile which is normally conjugated and
excreted by the liver. NH3—used to rebuild amino aacids or is converted to urea for excretion.
Elevations are seen in conditions that cause hepatocellular injury such as cirrhosis.
Tumor markers—CA 19-9 and CEA are evaluated to monitor the success of cancer therapy and to assess for the recurrence of cancer in the GI tract.
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Diagnostic Testing EGD ERCP (endoscopic retrograde
cholangiopancreatography) Colonoscopy Gastric analysis—NG, may give Histalog sc.
Fifteen minute intervals samples are taken for one hour. Depressed levels of gastric secretion suggest the presence of gastric carcinoma. Increased levels indicate Zollinger-Ellison syndrome and duodenal ulcers.
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Candidiasis Fungal infection resulting from overgrowth
of the Candida albicans, a normal flora. Seen in individuals receiving antibiotics,
chemotherapy, steroids, radiation or antirejection medication.
Also common among HIV-infected individuals
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Interventions Anti-infective agents such as abx or
antifungals. Tetracycline syrup, chlorhexidine, acyclovir
Analgesics such as lidocaine viscous, benadryl elixir, opioids
Meticulous oral hygiene using soft toothbrush, frequent care, rinsing with H2O2, warm saline, baking soda or a combination
Select soft, bland and nonacidic foods
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Malignant Tumors90% are Squamous cell Risk factors are increasing age, tobacco use, and
alcohol ingestion Poor dietary habits, poor oral hygiene and
infection with HPV increase the likelihood Common signs and symptoms incude unusual
lumps or thickening of the buccal mucosa, sores that do not heal
Seen more commonly in the 6th and 7th decades of life
African Americans have a higher rate of oral cancer
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Oral cancers Basal cells occur primarily on the lip Do not tend to metastasize but can
aggressively involve the skin of the face Biopsy is the definitive method for
diagnosis of oral cancers An aqueous solution of toluidine blue can
be applied to oral lesions to screen for malignancy
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Treatment Surgical excision—local excision,
glossectomy, partial mandibulectomy, commando procedure which includes excision of a segment of the mandible in conjunction with a radical neck dissection
Radiation Chemotherapy Combination
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Role of the Nurse. Helps to: Maintain patent oral airway through
removal of oral secretions Maintain nutritional status by eating
foods that are well tolerated, nutritious and provide adequate calories
Maintain integrity of the oral mucous membrane
Communicates needs to family, friends and personnel
Maintain comfort
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Patients with Esophageal ProblemsGastroesophageal Reflux Disease Is the backward flow of gastrointestinal
contents into the esophagus Results in reflex esophagitis Severity of s/s is not proportional to the
extent of reflux Inflammation and erosions result in
substitution of columnar epithelium (Barrett’s epithelium). This tissue is considered premalignant
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Factors contributing to decreased lower esophageal sphincter pressure Fatty foods Caffeinated beverages Chocolate Nicotine Calcium channel blockers Nitrates Peppermint Alcohol Anticholinergic drugs High levels of estrogen and progesterone NG tube placement
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GERD Affects 35-45% of population More common in those over 45 years of
age Probably underestimated Higher in females More often Caucasians Severe esophagitis is more prevalent in
male Caucasians
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Management Treated by diet, medication, and lifestyle
modifications Diet—restrict spicy and acidic foods; eat small
meals, avoid carbonated beverages, avoid eating before bedtime, avoid or reduce fatty foods
Lifestyle changes—elevate HOB, sleep in left lateral decubitus position, smoking cessation, avoidance of alcohol, weight reduction, remain upright for 1-2 hours after eating, avoid heavy lifting, straining and working in a bent-over position
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Drug Therapy in GERD Antacids except in renal failure Histamine Receptor Antagonists—Zantac, Axid,
and Tagamet. Tagamet is shorter-acting and has multiple drug interactions (warfarin, theophylline, phenytoin, nifedipine, erythromycin, others)
Proton Pump Inhibitors—Prilosec, Prevacid, Aciphex. Reserved for severe GERD that is refractory to the Histamine receptor blockers. These agents can decrease gastric acid by 90%. Sometimes have to go to Bid dosing for 4-8 weeks.
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Drug Therapy in GERD Prokinetic drugs such as Reglan which
increase gastric emptying. Associated with side effects such as fatigue, anxiety, ataxia, and hallucinations
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Surgical Management in GERDSurgery is indicated when other measures
have proven to be ineffectiveNissen fundoplication Surgeon wraps and sutures the gastric
fundus around the esophagus which anchors the LES area below the diaphragm and reinforces the high pressure area
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Hiatal Hernia Known as diaphragmatic hernia Classified as sliding or rolling hernias Sliding hernias are the most common type of
hernia and account for 90% of the total number of hiatal hernias.
The hernia generally moves into and out of the thorax
Believed to be caused from weakening in the esophageal hiatus
Congenital weaknesses, trauma, obesity or surgery may be causative
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Hiatal Hernia cont. Rolling Hernia—the gastroesophageal
junction remains in normal location but the fundus rolls through the esophageal hiatus and into the thorax beside the esophagus. Greater risk of volvulus or strangulation in this situation.
Likely caused from improper anchorage of the stomach.
Can be caused by previous esophageal surgeries.
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Hiatal Hernias Incidence increases with age May occur in up to 60% of persons in the
sixth decade of life More common in women and occur in 20%
of adults
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Management Nonsurgical guidelines are similar to those
with GERD Include drug therapy, diet therapy,
lifestyle modifications and client education(see section under GERD)
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Surgical Management Nissen fundoplication—wrapping of the fundus a
full 360 degrees around the lower esophagus Primary postoperatively is the prevention of
respiratory complications NG tube management—inserting a large diameter
NG tube during surgery prevents the fundoplication wrap from becoming too tight around the esophagus
NG must be properly anchored, cannot risk re-insertion
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Surgical Management Following surgery and after peristalsis is
re-established, clear liquids may be given May have G tube temporarily Gradually increase diet over next 6 weeks Frequent, small feedings May develop gas bloat syndrome
(cannot eructate) Avoid eating high fat foods, chewing gum,
drinking with a straw or drinking carbonated beverages
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Stomach Disorders Gastritis—inflammation of the gastric
mucosa Can be erosive or nonerosive Role of prostaglandins With progressive disease, stomach lining
thins, parietal cell functioning becomes compromised and the patient will develop pernicious anemia
Increased risk of cancer
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Gastritis continued Onset of infection with H.pylori can result
in gastritis Other pathogens implicated are CMV (in
HIV patients), staph, strep, E.coli or salmonella
NSAIDS Ingestion of corrosive substances radiation
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Chronic Gastritis Type A has autoimmune pathogenesis,
genetically linked Type B is caused by H. pylori. Direct
correlation between number of organisms and degree of cellular abnormality.
Can also be caused by alcohol ingestion, radiation therapy and smoking. Other causation may be Crohn’s, graft-versus-host disease and uremia.
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Physical Manifestations Abdominal tenderness Bloating Hematemesis Melena Can progress to shock
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Interventions Treat symptomatically Remove causative agents Treat H. pylori with bismuth, amoxicillin and
Flagyl Treat with H2 receptor antagonists to block
gastric secretions Antacids as buffers May need B12 Instruct patient about medications that
exacerbate the problem such as steroids, NSAIDS, ASA, erythromycin and chemotherapeutic agents
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Diet Therapy Avoid known foods that cause S/S Tea, coffee, cola, chocolate, mustard,
paprika, cloves, pepper and hot spices may cause discomfort
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Management cont. Surgery--Partial gastrectomy, pyloroplasty,
vagotomy or even total gastrectomy may be indicated
Stress reduction
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Peptic Ulcer Disease Peptic ulcer is a mucosal lesion of the stomach or
duodenum Results when gastric mucosal defenses become
impaired and no longer protect the epithelium Gastromucosal prostaglandins increase the
barrier against acid Gastric Ulcers can be caused by reflux of bile into
the stomach, by delayed emptying of stomach resulting in backflow of duodenal contents; decreased blood flow also will alter the protective barrier
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Peptic Ulcers continued Duodenal Ulcers—95% develop in the first portion
of the duodenum Characteristic feature of a duodenal ulcer is high
gastric acid secretion Protein rich meals, calcium and vagal excitation
stimulate acid secretion Up to 95% to 100% of clients with duodenal ulcer
disease have H.pylori This pathogen produces substances that damage
the gastric mucosa Urease produced contributes further to the
breakdown.
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Stress Ulcers Acute gastric mucosal lesions occurring
after an acute medical crisis Associated with HI, burns, respiratory
failure, shock, and sepsis. Multifocal lesions occur in proximal
stomach and duodenum Begin as focal areas of ischemia and may
progress to massive hemorrhage
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Complications of ulcers Hemorrhage in 15-25% of clients Perforation—severe pain will ensue.
Abdomen is tender, rigid, and boardlike and the client will assume the knee-chest position to decrease abdominal wall tension-----is a surgical emergency
Pyloric obstruction—caused by scarring, edema, inflammation or a combination of these
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Distinguishing between gastric and duodenal ulcers
Gastric ulcers1. Usually in those 50 yrs. And older2. Equal proportion of males to female3. Blood group not defining4. May be malnourished5. Normal or hyposecretion of stomach acid6. Heal and recur7. Pain occurs after a meal8. Heals and recurs in same area9. Atrophic gastritis
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Duodenal Ulcers
1. Occur in those 40-50 yo2. Equal male/female ratio3. Most often type O blood4. Well nourished5. Hypersecretion of stomach acid6. Occurs 90 min. to 3 hrs. after meal7. Eating relieves pain. Melena more common than
hematemesis8. No gastritis
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Diagnostic Testing EGD H.pylori testing—by breath test, serologic
testing (antibodies revealed). Antibody testing can not be used to determine eradication.
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Drug Therapy Antisecretory drugs such as Prilosec, Prevacid,
Aciphex, Nexium H2 receptor antagonists such as Pepcid, Zantac,
Axid, Tagamet Prostaglandin analogs such as Cytotec. Actually
enhances the mucosal resistance Antacids—buffer and prevent the formation of
pepsin.Mylanta and Maalox are examples (aluminum and magnesium hydroxide). Be careful if CHF. Tums is calcium carbonate which actually triggers gastrin release…..rebound secretion.
Antacids may interfere with certain medications such as Dilantin,ketoconazole and tetracycline.
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Drug Therapy cont. Mucosal barrier fortifiers such as carafate. Creates a protective coat
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Diet Therapy Bland diet may be helpful Food itself acts as an antacid Avoid caffeine Avoid both decaffeinated and caffeinated
coffee because coffee causes stimulation of gastrin
Avoid bedtime snacks which increase secretion of acid
Eat small regular meals
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Nonsurgical Management Treat hypovolemia Recognize s/s of hypovolemia which are
…….. Ready patient for endoscopy Saline lavage NG tube placement Acid suppression Monitor and document character of stools Avoid anti-inflammatories Administer blood products
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Surgical Management Used to:Reduce the acid-secreting ability of the
stomachTreat patients who do not respond to
medical therapyTreat a surgical emergency that develops as
a complication of PUD
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Surgical procedures Gastroenterostomy—permits
neutralization of gastric acid by regurgitation of alkaline duodenal contents into the stomach. Also will perform vagotomy to decrease vagal influences
Vagotomy—eliminates the acid-secreting stimulus to gastric cells and decreases the responsiveness of parietal cells. Can be selective, truncal or proximal.
Pyloroplasty—widens the exit of the pylorus
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Dumping Syndrome Is a constellation of vasomotor sysmtoms after
eating, especially after a Billroth II Is a result of rapid emptying of gastric contents
into the small intestine, which shifts fluid into the gut, resulting in abdominal distention
Early dumping syndrome occurs within 30 minutes of eating
Vertigo, tachycardia, syncope, pallor, palpitations, sweating and exhibit the need to lie down
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Dumping Syndrome cont. Late dumping syndrome occurs 90
minutes to 3 hours after eating Caused by a release of an excessive
amount of insulin release Insulin release follows a rapid rise in the
blood glucose level that results from the rapid entry of high carbohydrate food into the jejunum
Manifested by dizziness, lightheadedness, palpitations, diaphoresis and confusion
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Management of the Dumping Syndrome Decrease the amount of food taken at one time Eliminate liquids ingested with meals Consume high protein, high fat, low carbohydrate
diet Pectin may help reduce severity of s/s(purified
carbohydrate obtained from peel of citrus fruits or from apple pulp)
Somatostatin may be used in severe cases (inhibits the secretion of insulin and gastrin)
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Complications associated with partial gastrectomy
Deficiency of B12 Folic acid Iron Impaired calcium absorption Reduced absorption of vitamin D Result of shortage of intrinsic factor and
the now rapid entry of food into the bowel which decreases absorption
Nurse should monitor CBC, assessment of tongue for atrophic glossitis, s/s of anemia
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Irritable Bowel Syndrome Most common digestive disorder seen in clinical
practice Characterized by the presence of diarrhea,
constipation, and abdominal pain and bloating Believed to be due to impairment in the motor or
sensory function of the GI tract Cause unknown Dx made by careful history, labs and dx
procedures which exclude more serious conditions
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Irritable Bowel Food intolerances may be associated with
IBS Dairy products and grains can contribute
to bloating, flatulence and distention Occurs 2:1 more often in women Education is cornerstone of treatment Drug therapy includes fiber, tricyclic
antidepressants, antidiarrheal agents, laxatives and anticholinergics
Stress management may be helpful
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Irritable Bowel Avoid caffeine, alcohol, beverages that
contain sorbitol or fructose.
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Colorectal Cancer Familial Autosomal dominant inherited genetic disorder
known as familial adenomatous polyposis More prevalent after age 50 Can metastasize by direct invasion or by
migrating via the blood or lymph Risk factors include genetics, dietary habits
(animal fat, decreased bowel transit time, low fiber diets) and the occurrence of inflammatory bowel disease
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Colorectal cancer Generally are adenocarcinomas Multistep process resulting in a number of
molecular changes including loss of tumor suppressor genes and activation of oncogenes that alter colonic mucosa cell division. Proliferation of colonic mucosa forms polyps that can be transformed to malignant tumors. Adenomatous polyps.
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Colorectal Cancer Tumors predominantly develop in the sigmoid
colon or rectum Colon tumors can be spread by peritoneal
seeding during surgical excision Tumors can cause bowel obstructions 20% are diagnosed at time of emergency
hospitalization for bowel obstruction 75% of all colorectal cancers have no known
predisposing cause Inflammatory bowel diseases may pose an
increased risk for tumor development
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Colorectal Cancer Manifestations—rectal bleeding, anemia and a
change in the character of the stool Lab assessment—CBC, elevated liver enzymes,
+fecal occult blood test (Ensure that the patient is not on NSAIDS). Two separate stool samples should be tested on 3 consecutive days
CEA (carcinoembryonic antigen) may be elevated in 70% of people with colorectal cancer
Colonoscopy, sigmoidoscopy may help reveal polyps
Liver scan may locate distant sites of metastasis
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Colorectal Cancer Genetic counseling may be appropriate
so careful history is very important Classified by Dukes’ staging1. Stage A indicates that the tumor has
penetrated into the bowel wall2. Stage B- the tumor has penetrated
through the bowel wall3. Stage C-bowel wall penetration
w/involvement of the lymph4. Stage D-mets
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Colorectal Cancer Radiation has not improved outcomes
except in regional disease affecting the rectum
Chemotherapy has proven efficacious, especially in Stages B & C. Drug of choice is 5-FU. Side effects include diarrhea, mucositis and skin effects. Trying other medications such as leukovorin and irinotecan. Studies for use of monoclonal antibodies are under way.
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Colorectal Cancer Surgical Management Three most common surgeries are:1. Hemicolectomy—excision of the involved area
of the colon with reanastomosis2. Colon resection—if healing is thought to be in
jeopardy, a colostomy will be created3. Abdominoperineal resection—indicated when
rectal tumors are present. This approach generally requires a permanent colostomy.
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Colostomy—Nursing Role Apply pouch system Assess stoma. Should appear pink and
moist. Nurse reports any of the following:1. Signs of ischemia……2. Unusual bleeding3. Mucocutaneous separation4. Signs of leakage
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Colostomy Care Teach patients and families:1. Normal appearance of the stoma2. Signs and symptoms of complications3. Measurement of the stoma4. Care and application of the appliance5. Measures to protect the skin6. Dietary measures to control gas and odor7. Resumption of activities
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Colostomy Gas producing foods include broccoli,
asparagus, cucumbers, brussels sprouts, cabbage, cauliflower, garlic, turnips and beer
Crackers, toast and yogurt can help prevent gas
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Intestinal Obstruction--mechanical Mechanical obstruction can be caused
from adhesions, tumors, hernias, fecal impactions, strictures, and vascular disorders
Regardless of age, adhesions are the most common cause of mechanical obstruction.
Adhesions are bands of granulation and scar tissue that develop as a result of inflammation, encircle the intestine and constrict its lumen
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Intestinal Obstruction Paralytic ileus is a nonmechanical
obstruction caused by physiologic, neurogenic, or chemical imbalances associated with decreased peristalsis either from trauma or from toxins
Number of causative factors including MI, hypokalemia, vascular insufficiency, shock, or peritonitis. Any diffuse inflammatory response can cause this problem.
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Intestinal Obstruction—Paralytic Ileus May have vomiting Constant, diffuse discomfort Diarrhea may be present in partial
obstruction Abdominal distention will be present Abdominal rigidity Borborygmi which progresses to a quiet
abdomen
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Bowel Obstuction No definitive lab test CT useful Flat-plate and upright films will reveal
distention of loops of intestine with fluid and gas in the small intestine and with the absence of gas in the colon
Presence of free air in the abdomen indicates perforation
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Paralytic Ileus Care NPO NG tube or nasointestinal tube (cantor, Miller-
Abbott) for decompression Enemas may be helpful Fluid and electrolyte replacement are important Ice chips sparingly, not lemon glycerine swabs Closely monitor I&O Opioids may be withheld Mobilize patient if possible
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Peritonitis Acute inflammation of the endothelial lining of
the abdominal cavity or peritoneum. Is a life-threatening illness.
If peritoneal cavity is contaminated by bacteria, the body produces an inflammatory reaction that walls off a localized area to fight the infection. This reaction involves vascular dilation and increased capillary permeability locally. If this local walling off is not effective, the inflammation spreads and becomes peritonitis
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Peritonitis--pathophysiology1. Vascular dilation continues, 2. extra blood is brought to the area of
inflammation 3. Fluid is shifted from the ECF compartment into
the peritoneal cavity resulting in “third spacing”. 4. This shifting then will affect circulatory volume. 5. Hypoperfusion of kidneys can result6. Peristalsis will slow7. Bowel lumen will become distended with gas
and fluid8. Resp. problems can ensue
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Causes of peritonitis Appendicitis PUD Diverticulitis Gangrenous gallbladder Bowel obstruction Secondary to CAPD Ulcerative colitis
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Presentation of Peritonitis Abdominal pain and tenderness which may be
referred to the chest or shoulder—these are the cardinal signs
Distended abdomen Nausea, vomiting and anorexia Diminished bowel sounds Rebound tenderness High fever Tachycardia Dehydration Decreased urinary output Possible respiratory compromise
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Diagnostics Elevated WBCs with a shift to the left
(bands) Possible positive blood cultures Abdominal xray will reveal free air or fluid
—and edema Peritoneal lavage will reveal more than
500 WBCs/mL3 of fluid, greater than 50,000 RBCs/mL or the presence of bacteria on a gram stain
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Interventions for Peritonitis Hospitalized IV fluids and antibiotics Daily weight I&O NG tube O2 Pain medications Possible exploratory lap once stabilized Wound healing by secondary intention w/packing
and irrigation
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Peritonitis—care continued Upon discharge, teach patient1. Proper handwashing2. Wound care—may require home health
nurse3. Reporting fever, unusual drainage or
swelling, redness or bleeding from the incision site
4. Presence of abdominal unlike experienced upon discharge………..
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Chronic Inflammatory Bowel DiseaseUlcerative colitis Characterized by diffuse inflammation of the
intestinal mucosa Result is loss of surface epithelium with ulceration
and abscess formation Usually begins in rectum and continues gradually
and progressively toward the cecum Fibrosis and retraction of the bowel result Genetically linked autoimmune in nature—seen
more commonly in European Jews and Ashkenazic Jews
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Complications of ulcerative colitis Perforation Toxic megacolon Hemorrhage Abscesses Increased likelihood of cancer obstruction
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Causes tenesmus (uncontrollable straining)
Diarrhea Loss of vital nutrients May lead to malnutrition
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Diagnosis Elevated ESR Increased WBC r/o ova and parasites Barium enema will be definitive Sigmoidoscopy is most definitive
diagnostic procedure
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Treatment Antidiarrheals Salicylate compounds (sulfasalazine) acts by
affecting prostaglandins Steroids Immunosuppressive drugs-alone not helpful but if
used in combination with steroids—positive outcomes
Diet—NPO, TPN, low-fiber diet (debatable), avoid lactose containing foods
Surgery—possible proctocolectomy with ileostomy or total colectomy with a continent ileostomy
Psychosocial support—support groups
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Crohn’s Disease Regional enteritis Can affect any part of the GI tract from
mouth to anus Infectious, genetic and immune etiologies
have been proposed Deep fissures and ulcerations develop and
extend through all bowel layers Diffuse stricture formations develop Fistulas can develop
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Diagnosis Weight loss is classic No disease specific tests are available Testing is similar to that of ulcerative
colitis Treatment likewise is similar
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Differential Features of Ulcerative Colitis and Crohn’s
disease UC—begins in rectum and progresses toward
cecum, etiology is unknown, peaks at ages 15-25 and 55-65, 10-20 liquid bloody stools per day, complications include: perforation, hemorrhage, fistula, nutritional deficiencies
Crohn’s—occurs in the terminal ileum with patchy involvement through all layers of the bowel, etiology unknown, peaks at ages 15-40, 5-6 soft, loose stools daily (not bloody), frequent fistula development and also with nutritional deficiencies
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Case Studies Bowel obstruction GERD PUD Inflammatory Bowel Disease Cirrhosis Pancreatitis