MDC2 MODULE 5 Flashcards
(105 cards)
What is the role of the lower gastrointestinal (GI) tract?
Digestion, absorption, and waste elimination
What are some common lower gastrointestinal disorders?
- Irritable bowel syndrome (IBS)
- Inflammatory bowel diseases (IBD)
- Constipation
- Diverticulitis
- Colorectal cancer
What is Irritable Bowel Syndrome (IBS)?
A chronic functional GI disorder characterized by recurrent abdominal pain associated with changes in bowel habits—without identifiable structural abnormalities
What are the subtypes of IBS?
- IBS-C: Constipation-predominant
- IBS-D: Diarrhea-predominant
- IBS-M: Mixed type
- IBS-U: Unclassified
What are the Rome IV Diagnostic Criteria for IBS?
Pain occurring at least once per week in the last 3 months, plus ≥2 of the following:
* Related to defecation
* Change in stool frequency
* Change in stool form
What distinguishes Inflammatory Bowel Disease (IBD) from IBS?
IBD includes chronic inflammation of the GI tract and often involves systemic symptoms and mucosal inflammation, unlike IBS
What is Crohn’s disease?
A type of IBD that may occur anywhere in the GI tract, typically affecting the ileum and ascending colon, characterized by transmural inflammation with skip lesions
What are common complications of Crohn’s disease?
- Strictures
- Fistulas
- Abscesses
- Malabsorption
- Increased risk of colorectal cancer
What is Ulcerative Colitis?
A type of IBD that begins in the rectum and progresses proximally through the colon, characterized by continuous inflammation limited to the mucosa and submucosa
What are the clinical features of Ulcerative Colitis?
- Bloody diarrhea
- Left lower quadrant pain
- Tenesmus
- Urgency
What defines constipation?
Fewer than 3 bowel movements per week, hard or lumpy stools, or sensation of incomplete evacuation
What are the pathophysiologic types of constipation?
- Functional constipation
- Slow-transit constipation
- Defecatory disorders
What is Diverticulitis?
Inflammation of diverticula (herniated sacs in the colon wall) often caused by trapped stool and bacterial overgrowth
What are common symptoms of Diverticulitis?
- Left lower quadrant pain
- Fever
- Leukocytosis
- Constipation or diarrhea
- Nausea
- Bloating
What are the risk factors for Colorectal Cancer?
- Age > 50
- Family history
- High-fat/low-fiber diet
- Obesity
- Smoking
What are the symptoms of right-sided colorectal tumors?
Vague pain and anemia
What are the symptoms of left-sided colorectal tumors?
Obstruction, constipation, and narrow stools
What are the symptoms of rectal lesions?
Tenesmus, bloody stool, and incomplete evacuation
What is the gold standard for diagnosing colorectal cancer?
Colonoscopy with biopsy
What key factors influence lower gastrointestinal disorders?
- Environment
- Lifestyle
- Genetics
- Immune responses
- Medication use
What dietary patterns contribute to lower GI disorders?
- Low fiber intake
- High-fat diets
- Trigger foods (e.g., dairy, caffeine, FODMAPs)
How does chronic stress affect lower GI disorders?
Activates the HPA axis and alters gut-brain signaling
What are common medications that induce constipation?
- Opioids
- Anticholinergics
- Antidepressants
- Calcium channel blockers
- Iron supplements
- Aluminum-based antacids
What are the goals of nursing care for functional GI disorders?
- Improve quality of life through symptom control
- Focus on behavioral, dietary, and pharmacologic care