GIT LEC
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Transcript of GIT LEC
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Secreted by parietal cells
HCl- maintains acidity 1.0 pH
- destroy some bacteria ingested
- aids also in digestion of food
Intrinsic factor- aids in absorption of Vit B12
Secreted by entero- endocrine cells
Gastrin, somatostatin ,serotonin, endorphins and histamines.
Gastrin- regulates secretion and motility of the stomach
Assessment
History ( Demographic, Diet, CC, Medical, Family, Psychosocial )
Physical Examination
- position
- sequence
DIAGNOSTIC TESTS
Laboratory tests
CEA ( Carcinoembryonic Antigen)(+) colorectal cancer
specimen by venipuncture
Fecal Analysisstool for occult blood
detect GI bleeding
Prep: increase fiber diet48- 72 hrs no red meat, poultry, fish
withold for 48 hrs iron, steroids,
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Indomethacine, colchicine
Gastric analysis
Measures secretion of HCL and pepsin
NPO for 8-12 hrs
Gastric contents collected q15min for 1 hr
Radiographic Tests
UGIS
-to visualize the esophagus, stomach, doudenum and jejunum.
Prep: NPO 6-8 hrs
Barium sulfate per orem
X-ray taken on standing and lying position
Post-procedure: laxative
increase fluid intake
stool is white for 24-72hrs
observe for barium impaction
LGIS: to visualize the colonPrep: low residue/ clear liquid diet for 2 days
laxative or cleansing bowel
suppository and cleansing enema in AM
barium sulfate per rectum
Post-procedure: same as UGIS
Endoscopy
UGI Endoscopy- direct visualization of esophagus, stomach and duodenum.
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Prep: NPO 6-8 hrs
Anti-cholinergics
sedatives, narcotics, tranquilizers
Remove dentures
Post-procedure: side lying
NPO until gag reflex
LGI Endoscopy
Proctosigmoidoscopy ( sigmoid, rectum)
Prep: clear, liquid diet 24 hrs before test
administer cathartic/laxative as ordered
cleansing enema
kneechest/lateral position
Post- procedure: supine position for few minutes
assess for signs of perforation -
bleeding, pain and fever
Colonoscopy
Prep: sedation
position: left side, knees flexed
Post-procedure: Monitor v/s
Assess for s/s of perforation
Laparoscopy direct visualization of the organs and structures within the abdomen
Laparoscopic surgery, also called minimally invasive surgery (MIS), band aid surgery, or keyhole surgery
It is a modern surgical technique in which
operations in the abdomen are performed
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through small incisions (usually 0.51.5 cm)
Endoscopic retrograde
cholangiopancreatography (ERCP)
examination of the hepatobiliary system
Paracentesis trans-abdominal removal of fluid from the peritoneal cavity for analysis
Liver Biopsy
Post- Procedure:
Place on the right side with pillow under coastal margin.
Avoid heavy lifting and strenuous activities for a week.
Maintain bed rest for several hours.
Urea breath test detects the presence of helicobacter pylori, the bacteria that causes_____
Procedure: patient consumes a capsule of carbon-labeled urea and provides a breath sample 10 to 20
mins later.
Several medications has to be avoided prior to the test: antibiotics (1 month) carafate and omeprazole (
1 week ) and H2 blockers (24 hrs)
Sigmoidoscopy
Colonoscopy
Gastroscopy
Gastroesophageal reflux
DESCRIPTION:
Backflow of gastric contents into the esophagus
Usually due to incompetent lower esophageal sphincter , pyloric stenosis or motility disorder
Symptoms may mimic heart attack
Do you know why I took up nursing? It was in 4th year high school that I saw a vision of a great
woman bearing a light in her right hand wearing a long gown and a headress calling me to serve
her.
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Statue of Liberty
TRY THIS!!!
Is it possible that stomach will digest itself?
No, because of
MUCOUS GLANDS
Mucous glands
prevent autodigestion
by providing
an alkaline protective
covering
LAUGH BREAK
Bakla at Macho nagkasabay sa CR...
Bakla: Ang laki naman nyan sayo...
Macho: Wala na tong silbi kasi iniwan na ako ng GF ko... puputulin ko na
lang at ipapakain ko sa aso!
Bakla: aw! aw! aw!
Gastric Ulcer
-50 y/o and above
-lower socioeconomic class
-20% incidence
-normal to hyposecretion of HCl
-pain at meal
-hematemesis
-with malignancy
-at lesser curvature
-malnourished
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-blood group A
HIATAL HERNIA
Esophageal or diaphragmatic hernia
Portion of the stomach herniates diaphragm thorax
Weakening of the muscles of the diaphragm & aggravated by fx that abdominal pressure
i.e. pregnancy, ascites, obesity, tumors, and heavy lifting
Cx:
ulceration, hemorrhage, regurgitation and aspiration of stomach contents, strangulation, and
incarceration of the stomach in the chest with possible necrosis, peritonitis, and mediastinitis
HIATAL HERNIA
Assessment
Heartburn
Regurgitation or vomiting
Dysphagia
Feeling of fullness
HIATAL HERNIA
Implementation
Medical and surgical management is similar to that for GER
Provide small, frequent meals and minimize the amount of liquids
Advise the client not to recline for 1 hour after eating
Avoid anticholinergics, which delay stomach emptying
LAUGH BREAK
CROHNS DISEASE
ULCERATIVE COLITIS
APPENDICITIS
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Destroys old RBC/blood reservoir
Removes poisons from the blood
Stores and releases glycogen as needed by the body
Manufactures bile
Storage of minerals and fat soluble vitamins
Pancreas
Both exocrine and endocrine gland
Exocrine function is to secrete pancreatic enzymes amylase, lipase and trypsin
Collects worn out RBC
Disorders
Liver Physiology and Pathophysiology
fetor hepaticus (foul smelling breath)
metabolism of nitrogenous waste products
leads to azotemia to hepatic encephalitis (asterixis and decreased LOC)
Predisposing Factors: 5 Fs
Female
Fat
Fair
Forty
Fertile
Colorectal Cancer
Cause: Unknown
Most Common Site: rectosigmoid area
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Types of Colostomies
Ascending colostomy
Stoma is on the right of abdomen
Fecal drainage is watery becomes pasty
Transverse Colostomy-Transverse portion
- middle of the abdomen
- output: liquid initially-semiformed to paste like in 4-6weeks
Descending and Sigmoid Colostomy
Stoma on the left of the abdomen
Fecal drainage is well-formed
Colonic Surgery
Postop Care
Managing the perineal wound
6months to completely heal
Wound irrigations with NSS and absorbent dressings until wound closes.
Drainage is initially copious and serosanguinous, to be drained regularly
Stoma Monitoring
Stoma is red and with slight edema for 5-7 days
Dark, dusky or brown- black stoma indicates ischemia and necrosis
Should protrude by to inches over abdomen Flatus and fecal drainage- begin in 4-7 days, as peristalsis returns Empty the pouch 1/3 full of stool
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- Teaching for self- care Stoma Care
Gently encourage the client to look at the stoma Inform that stoma has no touch or pain sensation
Skin care
Wash the skin with warm water, pat dry when pouch seal leaks, change pouch immediately Use skin barrier to protect the peristomal skin from liquid stool Skin infection caused by Candida Albicans is treated with nystatin (
Mycostatin) powder.
Colostomy Irrigation
Initial Irrigation- stimulate peristalsis; subsequent irrigations-promote evacuation of feces at a regular
and convenient time
Recommended with sigmoid colostomy
Initiated 5-7 days postop
Semi-fowlers position; sitting on a toilet bowl once able
Use warm normal saline solution
How to Irrigate..
Initially, introduce 200ml of NSS then 500- 1000ml subsequently
Dilate stoma with lubricated gloved finger before insertion of catheter
Lubricate catheter before insertion
Insert 2-4 inches of the catheter into the stoma
Height of solution 18 inches above the stoma
Abdominal cramps-temporarily stop the flow of solution until peristalsis relaxes
Allow the catheter to remain in place for 5-10 minutes for better cleansing effect, then remove
catheter to drain for 15-20 minutes.
Clean the stoma, apply new pouch.
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Managing Odor
Avoid gas- forming and foul odor foods
Rinse pouch with tepid water or weak vinegar solution.
Place deodorant tablet or small amount of mouthwash or a piece of charcoal into a pouch.
Colonic Surgery
Postop Care
Supporting a Positive Self- Concept
Encourage to view the stoma
Encourage to verbalize feelings, fears and concern abou the stoma
Encourage to participate in colostomy care
Encourage to gradually resume all usual activities
Preventing Sexual Dysfunctions
Explore positions that minimize stress and pressure on the pouch
Empty and clean the pouch before sexual activity
Use smaller- sized pouch or pouch cover during sexual activity
Use of a binder or special underwear to hold the pouch secure