W8. Alterations of the Gastrointestinal System – Key Vocabulary

flashcards (20)

Which gastrointestinal condition is characterized by the chronic backflow of stomach acid into the esophagus, potentially leading to erosion of the lining, heartburn, and complications like strictures or esophageal cancer?
A) Gastroparesis
B) Diverticulitis
C) Gastroesophageal Reflux Disease (GERD)
D) Cholecystitis

Answer: C) Gastroesophageal Reflux Disease (GERD)

Rationale: GERD is accurately defined by the chronic backflow of stomach acid into the esophagus, causing symptoms like heartburn and increasing the risk of complications such as strictures or esophageal cancer.

• Gastroparesis is delayed gastric emptying.
• Diverticulitis is inflammation of diverticula in the colon.
• Cholecystitis is inflammation of the gallbladder.

A patient with chronic GERD is diagnosed with a metaplastic change of the distal esophageal lining, increasing the risk of esophageal adenocarcinoma. What is this condition called?
A) Esophageal stricture
B) Barrett’s Esophagus
C) Achalasia
D) Esophagitis

Answer: B) Barrett’s Esophagus

Rationale: Barrett’s Esophagus is a metaplastic change of the distal esophageal lining resulting from chronic GERD, significantly increasing the risk of esophageal adenocarcinoma.

• Esophageal stricture is a narrowing, often a complication of GERD.
• Achalasia is a motility disorder affecting the lower esophageal sphincter.
• Esophagitis is general inflammation of the esophagus.

Which drug class, including medications like famotidine and ranitidine, decreases gastric acid secretion by blocking histamine H2 receptors on parietal cells?
A) Proton Pump Inhibitors (PPIs)
B) Antacids
C) Prokinetics
D) H2-Receptor Antagonists

Answer: D) H2-Receptor Antagonists

Rationale: H2-Receptor Antagonists, such as famotidine and ranitidine, work by blocking histamine H2 receptors on parietal cells, thereby decreasing gastric acid secretion.

• PPIs irreversibly inhibit the gastric proton pump.
• Antacids neutralize existing stomach acid.
• Prokinetics enhance GI motility.

Medications such as omeprazole and esomeprazole that irreversibly inhibit the gastric proton pump and markedly reduce acid production are classified as which of the following?
A) H2-Receptor Antagonists
B) Antacids
C) Proton Pump Inhibitors (PPIs)
D) Prokinetics

Answer: C) Proton Pump Inhibitors (PPIs)

Rationale: PPIs, including omeprazole and esomeprazole, are known for their mechanism of action: irreversibly inhibiting the gastric proton pump to significantly reduce acid production, making them highly effective in acid suppression.

• H2-Receptor Antagonists block histamine H2 receptors.
• Antacids neutralize existing acid.
• Prokinetics improve GI motility.

A patient presents with nausea, vomiting, and abdominal pain, attributed to delayed gastric emptying caused by impaired stomach muscle activity. This condition is often associated with diabetes or surgery. What is this condition?
A) Peptic Ulcer Disease
B) Gastroparesis
C) Hiatal Hernia
D) Pancreatitis

Answer: B) Gastroparesis

Rationale: Gastroparesis is characterized by delayed gastric emptying due to impaired stomach muscle activity, leading to symptoms like nausea, vomiting, and abdominal pain. It is commonly seen in patients with diabetes or after surgery.

• Peptic Ulcer Disease involves sores in the stomach lining.
• Hiatal Hernia is stomach protrusion through the diaphragm.
• Pancreatitis is inflammation of the pancreas.

What GI condition involves the protrusion of the stomach through the esophageal hiatus of the diaphragm into the thoracic cavity, potentially categorized as sliding or paraesophageal?
A) Inguinal Hernia
B) Umbilical Hernia
C) Hiatal Hernia
D) Incisional Hernia

Answer: C) Hiatal Hernia

Rationale: A Hiatal Hernia specifically describes the protrusion of the stomach through the esophageal hiatus of the diaphragm into the thoracic cavity. It can be classified as sliding or paraesophageal.

• Inguinal, umbilical, and incisional hernias are forms of abdominal wall hernias, not involving the diaphragm's esophageal hiatus.

Which type of bowel obstruction is caused by a physical blockage of the intestinal lumen, often by adhesions, tumors, hernias, or fecal matter, and frequently requires surgical removal?
A) Paralytic Ileus
B) Mechanical Bowel Obstruction
C) Gastroparesis
D) Crohn’s Disease

Answer: B) Mechanical Bowel Obstruction

Rationale: A Mechanical Bowel Obstruction refers to a physical blockage of the intestinal lumen, caused by factors like adhesions, tumors, hernias, or fecal matter, and typically necessitates surgical intervention for removal.

• Paralytic Ileus is a non-mechanical obstruction due to absent peristalsis.
• Gastroparesis is delayed gastric emptying.
• Crohn’s Disease is an inflammatory bowel disease, not a direct physical blockage.

A patient experiences an intestinal blockage characterized by reduced or absent peristalsis, commonly occurring after abdominal surgery. What is this condition?
A) Mechanical Bowel Obstruction
B) Diverticulitis
C) Paralytic Ileus (Non-mechanical Obstruction)
D) Volvulus

Answer: C) Paralytic Ileus (Non-mechanical Obstruction)

Rationale: Paralytic Ileus is an intestinal blockage caused by absent or reduced peristalsis, making it a non-mechanical obstruction, and is frequently observed following abdominal surgery. Volvulus is a type of mechanical obstruction.

• A Mechanical Bowel Obstruction is a physical blockage.
• Diverticulitis is inflammation of diverticula.
• Volvulus is a twisting of the bowel, which is a mechanical obstruction.

Which inflammatory bowel disease is transmural, can affect any part of the GI tract, and is characterized by diarrhea, abdominal pain, weight loss, and potential fistula or abscess formation?
A) Ulcerative Colitis
B) Irritable Bowel Syndrome (IBS)
C) Celiac Disease
D) Crohn’s Disease

Answer: D) Crohn’s Disease

Rationale: Crohn’s Disease is a transmural inflammatory bowel disease that can impact any segment of the GI tract from mouth to anus, leading to symptoms like diarrhea, abdominal pain, weight loss, and the formation of fistulas or abscesses.

• Ulcerative Colitis is limited to the mucosal layer of the colon.
• IBS is a functional disorder, not inflammatory.
• Celiac Disease is an autoimmune disorder triggered by gluten.

Which chronic inflammatory bowel disease is limited to the colon’s mucosal layer, typically causing bloody diarrhea, urgency, and abdominal pain?
A) Crohn’s Disease
B) Diverticulitis
C) Ulcerative Colitis
D) Appendicitis

Answer: C) Ulcerative Colitis

Rationale: Ulcerative Colitis is characterized by chronic inflammation that is specifically limited to the mucosal layer of the colon, commonly presenting with bloody diarrhea, urgency, and abdominal pain. Crohn’s Disease affects the entire GI tract transmurally.

• Crohn’s Disease is transmural and can affect any part of the GI tract.
• Diverticulitis is inflammation of diverticula.
• Appendicitis is inflammation of the appendix.

Acute inflammation and infection of diverticula in the colon, which may lead to complications such as perforation, peritonitis, or bleeding, describes which condition?
A) Appendicitis
B) Diverticulitis
C) Pancreatitis
D) Cholecystitis

Answer: B) Diverticulitis

Rationale: Diverticulitis is the acute inflammation and infection of diverticula within the colon, with potential severe complications including perforation, peritonitis, or bleeding.

• Appendicitis is inflammation of the appendix.
• Pancreatitis is inflammation of the pancreas.
• Cholecystitis is inflammation of the gallbladder.

An infectious colitis causing profuse diarrhea, which requires strict contact precautions, handwashing with soap and water, and bleach cleaning, is most likely caused by which organism?
A) E. coli
B) Salmonella
C) Clostridioides difficile (C-Diff)
D) Norovirus

Answer: C) Clostridioides difficile (C-Diff)

Rationale: Clostridioides difficile colitis (C-Diff) is an infectious colitis known for causing profuse diarrhea and necessitates specific infection control measures such as contact precautions, thorough handwashing with soap and water (as alcohol-based sanitizers are ineffective against its spores), and bleach for surface disinfection.

• E. coli, Salmonella, and Norovirus cause other forms of infectious gastroenteritis but do not typically require the same stringent contact precautions related to spore transmission that C-Diff does.

What therapy for recurrent Clostridioides difficile (C-diff) infection involves introducing screened donor stool into the colon to restore healthy gut flora?
A) Long-term antibiotic therapy
B) Probiotic supplementation
C) Fecal Microbiota Transplantation (FMT)
D) Colon resection

Answer: C) Fecal Microbiota Transplantation (FMT)

Rationale: Fecal Microbiota Transplantation (FMT) is a highly effective therapy specifically for recurrent C-diff infection, which works by introducing screened donor stool into the colon to re-establish a healthy balance of gut flora.

• Long-term antibiotic therapy can sometimes worsen C-diff or lead to resistance.
• Probiotic supplementation has limited efficacy for recurrent C-diff.
• Colon resection is a surgical option for severe, refractory cases, not a primary therapy for restoring flora.

Which irreversible liver condition results from chronic injury (e.g., alcohol, hepatitis) and leads to complications such as portal hypertension, ascites, and signs of hepatic failure?
A) Hepatitis
B) Fatty Liver Disease
C) Cirrhosis
D) Cholecystitis

Answer: C) Cirrhosis

Rationale: Cirrhosis is defined as irreversible liver scarring caused by chronic injury (such as from alcohol or hepatitis), which progresses to significant complications like portal hypertension, fluid accumulation (ascites), and general signs of hepatic failure.

• Hepatitis is inflammation of the liver, which can lead to cirrhosis if chronic.
• Fatty Liver Disease is an accumulation of fat in the liver, also potentially leading to cirrhosis.
• Cholecystitis is inflammation of the gallbladder.

What neuropsychiatric complication of liver failure is caused by elevated ammonia levels, presents with symptoms like confusion, agitation, and asterixis, and is typically treated with lactulose?
A) Delirium tremens
B) Hepatic Encephalopathy
C) Biliary encephalopathy
D) Uremic encephalopathy

Answer: B) Hepatic Encephalopathy

Rationale: Hepatic Encephalopathy is a neuropsychiatric complication specifically of liver failure, driven by elevated ammonia levels. Its characteristic symptoms include confusion, agitation, and asterixis (flapping tremors), and it is managed with lactulose to reduce ammonia absorption.

• Delirium tremens is alcohol withdrawal.
• Biliary and uremic encephalopathies are not standard terms for liver failure complications.

A patient presents with severe pain in the left upper quadrant (LUQ) or epigastric region, along with elevated amylase and lipase levels, and a potential for hemorrhage. This describes which condition involving autodigestion and inflammation?
A) Gastritis
B) Cholecystitis
C) Pancreatitis
D) Appendicitis

Answer: C) Pancreatitis

Rationale: Pancreatitis involves the autodigestion and inflammation of the pancreas, causing severe LUQ or epigastric pain, typically accompanied by elevated serum amylase and lipase levels, and a risk of hemorrhage.

• Gastritis is inflammation of the stomach lining.
• Cholecystitis is inflammation of the gallbladder.
• Appendicitis is inflammation of the appendix.

Acute inflammation of the gallbladder, often caused by gallstones and presenting with right upper quadrant (RUQ) pain, which is frequently managed with laparoscopic cholecystectomy, is known as what condition?
A) Cholelithiasis
B) Cholangitis
C) Cholecystitis
D) Pancreatitis

Answer: C) Cholecystitis

Rationale: Cholecystitis is the acute inflammation of the gallbladder, most commonly triggered by gallstones, leading to characteristic right upper quadrant (RUQ) pain. It is often treated with laparoscopic cholecystectomy.

• Cholelithiasis refers to the presence of gallstones without inflammation.
• Cholangitis is inflammation of the bile ducts.
• Pancreatitis is inflammation of the pancreas.

What type of surgical opening of the ileum onto the abdominal wall results in frequent, liquid stool that requires continuous external pouching?
A) Colostomy
B) Gastrostomy
C) Ileostomy
D) Jejunostomy

Answer: C) Ileostomy

Rationale: An Ileostomy is a surgical procedure that creates an opening from the ileum onto the abdominal wall. Because the ileum bypasses the large intestine's water absorption, it characteristically produces frequent, liquid stool, necessitating continuous external pouching.

• A colostomy is an opening from the colon.
• A gastrostomy is an opening into the stomach.
• A jejunostomy is an opening into the jejunum.

Which method of nutrition delivery involves a tube into a functioning GI tract for patients unable to swallow or meet caloric needs orally, requiring head-of-bed elevation and residual checks?
A) Total Parenteral Nutrition (TPN)
B) Intravenous hydration
C) Enteral Feeding
D) Oral supplements

Answer: C) Enteral Feeding

Rationale: Enteral Feeding is the provision of nutrition directly into a functioning gastrointestinal tract via a tube. It is used for patients who cannot safely swallow or adequately meet their nutritional needs orally. Key nursing considerations include elevating the head of the bed to prevent aspiration and checking gastric residuals.

• TPN is intravenous nutrition when the GI tract is nonfunctional.
• Intravenous hydration provides fluids, not complete nutrition.
• Oral supplements are given orally.

What hypertonic, pharmacy-prepared IV solution is infused through a central line to provide complete nutrition when the GI tract is nonfunctional?
A) Peripheral parenteral nutrition (PPN)
B) Enteral feeding
C) Total Parenteral Nutrition (TPN)
D) Intravenous Dextrose

Answer: C) Total Parenteral Nutrition (TPN)

Rationale: Total Parenteral Nutrition (TPN) is a hypertonic, complete nutritional solution prepared by a pharmacy and administered via a central venous line, specifically for patients whose GI tract is nonfunctional or cannot adequately absorb nutrients.

• PPN is administered peripherally and is less hypertonic, providing partial nutrition for limited durations.
• Enteral feeding uses a functioning GI tract.
• Intravenous Dextrose provides only carbohydrates, not complete nutrition.