LPN exams gastrointestinal practice questions, set 9
LPN exams · gastrointestinal
LPN exams gastrointestinal practice questionsset 9
You read GI bleed, liver, and nutrition stems and pick the intervention that protects the patient now. Five of the 15 questions include the correct answer and rationale. The other ten keep answers in the study hub. Continue with the LPN exams exam guide or more LPN exams practice questions.
Five gastrointestinal questions with answers
Cover the key. Write the first action. Then open the rationale and name why the other choices fail.
Question 1
Which statement best describes the underlying cause of peptic ulcer disease?
A. Erosion of the gastrointestinal lining due to an imbalance between gastric acid and pepsin.
B. Inflammation of the esophagus caused by acid reflux.
C. Overproduction of insulin leading to low blood glucose levels.
D. Blockage of the pancreatic ducts leading to digestion of pancreatic tissue.
Show answer and rationale
Correct answer: A — Erosion of the gastrointestinal lining due to an imbalance between gastric acid and pepsin.
The correct answer is A because peptic ulcer disease is primarily caused by the erosion of the gastrointestinal lining due to an imbalance between gastric acid and pepsin. Gastric acid and pepsin can damage the protective lining of the stomach and duodenum, leading to ulcer formation. This process is known as the acid-pepsin hypothesis. Choices B, C, and D are incorrect because they do not directly relate to the underlying cause of peptic ulcer disease. Inflammation of the esophagus due to acid reflux (choice B) is a characteristic of gastroesophageal reflux disease, not peptic ulcer disease. Overproduction of insulin leading to low blood glucose levels (choice C) is a characteristic of hypoglycemia, not peptic ulcer disease. Blockage of the pancreatic ducts leading to digestion of pancreatic tissue (choice D) is a characteristic of pancreatitis, not peptic ulcer disease.
Question 2
Which statement best describes the underlying cause of peptic ulcer disease?
A. Erosion of the gastrointestinal lining due to an imbalance between gastric acid and pepsin.
B. Inflammation of the esophagus caused by acid reflux.
C. Overproduction of insulin leading to low blood glucose levels.
D. Blockage of the pancreatic ducts leading to digestion of pancreatic tissue.
Show answer and rationale
Correct answer: A — Erosion of the gastrointestinal lining due to an imbalance between gastric acid and pepsin.
The correct answer is A because peptic ulcer disease is primarily caused by the erosion of the gastrointestinal lining due to an imbalance between gastric acid and pepsin. Gastric acid and pepsin can damage the protective lining of the stomach and duodenum, leading to ulcer formation. This process is known as the acid-pepsin hypothesis. Choices B, C, and D are incorrect because they do not directly relate to the underlying cause of peptic ulcer disease. Inflammation of the esophagus due to acid reflux (choice B) is a characteristic of gastroesophageal reflux disease, not peptic ulcer disease. Overproduction of insulin leading to low blood glucose levels (choice C) is a characteristic of hypoglycemia, not peptic ulcer disease. Blockage of the pancreatic ducts leading to digestion of pancreatic tissue (choice D) is a characteristic of pancreatitis, not peptic ulcer disease.
Question 3
Which of the following complications best describes a microvascular complication of diabetes mellitus?
A. Abdominal aortic aneurysm
B. Coronary heart disease
C. Diabetic retinopathy
D. Peripheral artery disease
Show answer and rationale
Correct answer: C — Diabetic retinopathy
The correct answer is C: Diabetic retinopathy. This is a microvascular complication of diabetes mellitus affecting the small blood vessels in the retina. It is caused by prolonged high blood sugar levels damaging the blood vessels, leading to vision problems and potentially blindness.
Explanation:
1. Diabetic retinopathy specifically involves the microvasculature of the eye.
2. Abdominal aortic aneurysm (Choice A) and Coronary heart disease (Choice B) are macrovascular complications affecting larger blood vessels.
3. Peripheral artery disease (Choice D) involves blockages in larger arteries, not the microvasculature.
In summary, diabetic retinopathy is the best description of a microvascular complication of diabetes mellitus as it involves damage to the small blood vessels in the retina, distinguishing it from macrovascular complications listed in the other options.
Question 4
A nurse is preparing an intervention plan for a client who is receiving tube feedings after an oral surgery. Which of the following measures can prevent improper infusion and assist in preventing vomiting?
A. Consulting the physician and dietitian
B. Administering the feedings at room temperature
C. Changing the tube feeding container and tubing
D. Checking the tube placement and gastric residual prior to feedings
Show answer and rationale
Correct answer: D — Checking the tube placement and gastric residual prior to feedings
The correct answer is D: Checking the tube placement and gastric residual prior to feedings. This is crucial to ensure proper placement of the tube and to assess if there is any undigested food in the stomach, which can lead to vomiting if fed through the tube. By checking these factors before administering feedings, the nurse can prevent complications.
A: Consulting the physician and dietitian is important but does not directly prevent improper infusion or vomiting.
B: Administering feedings at room temperature is a good practice but does not directly prevent vomiting.
C: Changing the tube feeding container and tubing may be necessary for hygiene but does not directly prevent improper infusion or vomiting.
In summary, checking the tube placement and gastric residual is essential in preventing vomiting and ensuring proper feeding, making it the correct choice.
Question 5
A 48-year-old man with a history cirrhosis secondary to hepatitis C presents to the emergency room with confusion, altered mentation, and erratic behavior. He is afebrile. His examination is notable for grossly normal motor strength throughout, hyperreflexia, asterixis, bulging flanks, and shifting dullness. His total bilirubin is 6 mg/dL, his creatinine is 1.8 mg/dL, and his prothrombin time is elevated. His white blood cell count is 11,000/µL with $85 \%$ neutrophils. His ammonia level is 30 µg/dL (normal 15-45 µg/dL). Which of the following statements is correct?
A. Given his normal ammonia level, he does not have hepatic encephalopathy and another cause for his change in mental status should be entertained
B. Despite his normal temperature, his ascitic fluid should be sampled to rule out bacterial peritonitis
C. Empiric antibiotic therapy with an aminoglycoside should be started to cover gram-negative enteric organisms
D. Lactulose should be started and the dose titrated to achieve an ammonia level of less than $10 \mu \mathrm{g} / \mathrm{dL}$
Show answer and rationale
Correct answer: B — Despite his normal temperature, his ascitic fluid should be sampled to rule out bacterial peritonitis
The correct answer is B. Ascitic fluid sampling is crucial in ruling out bacterial peritonitis in patients with cirrhosis presenting with altered mental status. The presence of ascites, bulging flanks, and shifting dullness in the patient's examination indicates ascites, which increases the risk of spontaneous bacterial peritonitis (SBP). SBP can lead to hepatic encephalopathy, contributing to the patient's altered mental status. Sampling ascitic fluid allows for culture and analysis to identify bacterial infection. Choice A is incorrect because normal ammonia levels do not exclude hepatic encephalopathy, which can still be present due to other factors. Choice C is incorrect as aminoglycosides are not recommended for empiric antibiotic therapy in SBP. Choice D is incorrect as lactulose is indicated for hepatic encephalopathy but not for treating bacterial peritonitis.
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Question 6
The function of the cardiac sphincter is to prevent backflow of acid chyme from the
A. esophagus to the mouth
B. stomach to the esophagus
C. duodenum to the stomach
D. colon to the small intestine
Correct answer:
The correct answer is B: stomach to the esophagus. The cardiac sphincter is located between the esophagus and the stomach. Its main function is to prevent the backflow of stomach contents, including acid chyme, from the stomach back into the esophagus. This helps to protect the delicate lining of the esophagus from damage due to the acidic environment of the stomach.
Explanation for other choices:
A: The esophagus does not connect to the mouth, so backflow from the esophagus to the mouth is not a concern.
C: The duodenum is the first part of the small intestine and is located after the stomach, so backflow to the stomach is not controlled by the cardiac sphincter.
D: The colon is part of the large intestine and is not directly connected to the small intestine, so backflow from the colon to the small intestine is not relevant to the function of the cardiac sphincter.
The nurse is doing preoperative teaching with the client who is about to undergo creation of a Kock pouch. The nurse interprets that the client has the best understanding of the nature of the surgery if the client makes which of the following statements?
A. I will need to drain the pouch regularly with a catheter.
B. I will need to wear a drainage bag for the rest of my life.
C. The drainage from this type of ostomy will be formed.
D. I will be able to pass stool from the rectum eventually.
Correct answer:
The correct answer is A: "I will need to drain the pouch regularly with a catheter." This answer demonstrates an accurate understanding of the Kock pouch procedure, which involves the creation of a reservoir that needs to be drained periodically to prevent complications like overflow or infection.
Rationale:
1. A Kock pouch is a continent ileostomy that requires regular catheterization for drainage.
2. Choice B is incorrect because wearing a drainage bag for life is not necessary with a Kock pouch.
3. Choice C is incorrect as a Kock pouch does not produce formed drainage.
4. Choice D is incorrect because passing stool from the rectum is not possible after a Kock pouch surgery.
In summary, choice A is the correct answer as it aligns with the specific care requirements of a Kock pouch surgery, while the other options misrepresent the nature of the procedure.
A 48-year-old man with a history cirrhosis secondary to hepatitis C presents to the emergency room with confusion, altered mentation, and erratic behavior. He is afebrile. His examination is notable for grossly normal motor strength throughout, hyperreflexia, asterixis, bulging flanks, and shifting dullness. His total bilirubin is 6 mg/dL, his creatinine is 1.8 mg/dL, and his prothrombin time is elevated. His white blood cell count is 11,000/µL with $85 \%$ neutrophils. His ammonia level is 30 µg/dL (normal 15-45 µg/dL). Which of the following statements is correct?
A. Given his normal ammonia level, he does not have hepatic encephalopathy and another cause for his change in mental status should be entertained
B. Despite his normal temperature, his ascitic fluid should be sampled to rule out bacterial peritonitis
C. Empiric antibiotic therapy with an aminoglycoside should be started to cover gram-negative enteric organisms
D. Lactulose should be started and the dose titrated to achieve an ammonia level of less than $10 \mu \mathrm{g} / \mathrm{dL}$
Correct answer:
The correct answer is B. Ascitic fluid sampling is crucial in ruling out bacterial peritonitis in patients with cirrhosis presenting with altered mental status. The presence of ascites, bulging flanks, and shifting dullness in the patient's examination indicates ascites, which increases the risk of spontaneous bacterial peritonitis (SBP). SBP can lead to hepatic encephalopathy, contributing to the patient's altered mental status. Sampling ascitic fluid allows for culture and analysis to identify bacterial infection. Choice A is incorrect because normal ammonia levels do not exclude hepatic encephalopathy, which can still be present due to other factors. Choice C is incorrect as aminoglycosides are not recommended for empiric antibiotic therapy in SBP. Choice D is incorrect as lactulose is indicated for hepatic encephalopathy but not for treating bacterial peritonitis.
Which statement accurately describes buffering activities of the respiratory system?
A. The respiratory system can react to changes in pH within seconds by modifying the rate and depth of breathing.
B. When the pH of arterial blood increases, the respiratory system is reflexively triggered to decrease the depth and rate of breathing.
C. The respiratory system can only buffer against increases in arterial [H+].
D. The respiratory system can only counteract changes in pH that result from nonrespiratory causes.
Correct answer:
Step 1: The respiratory system can react to changes in pH quickly due to its ability to modify the rate and depth of breathing.
Step 2: By increasing the rate and depth of breathing, excess CO2 is expelled, reducing H+ concentration and restoring pH balance.
Step 3: This rapid response allows the respiratory system to buffer against pH changes within seconds.
Step 4: Choice A is correct as it accurately describes the buffering activities of the respiratory system.
Summary:
Choice B is incorrect because an increase in pH would lead to a decrease in H+ concentration, triggering an increase in the depth and rate of breathing.
Choice C is incorrect as the respiratory system can buffer against both increases and decreases in arterial [H+].
Choice D is incorrect as the respiratory system can counteract changes in pH from both respiratory and nonrespiratory causes.
A 52-year-old man with a history of hypertension presents for a follow-up visit. He denies any complaints. His only medication is hydrochlorothiazide. He has some laboratory tests done that reveal mild elevations of his ALT and AST levels. His total bilirubin and alkaline phosphatase levels are normal. He is brought back to have his tests repeated and to have further testing. His AST and ALT are still elevated. His iron studies are normal. His hepatitis C antibody is negative. His hepatitis A IgM is negative. His hepatitis B surface antigen and antibody are negative. His IgM antibody to hepatitis B core antigen (IgM anti-HBc) is positive. Which of the following statements is correct?
A. He is a chronic carrier of the hepatitis B virus
B. There is a $90 \%$ chance that he is positive for hepatitis D
C. Hepatitis B infection has been ruled out
D. If his hepatitis B surface antibody turns positive in three months, then he had an acute hepatitis B infection
Correct answer:
The most specific marker for the diagnosis of acute hepatitis B is IgM antibody to hepatitis B core antigen (IgM anti-HBc). However, false positives can occur. Chronic carriers of hepatitis B will typically have a positive hepatitis B surface antigen (HbsAg) and a positive IgG antibody to hepatitis B core antigen (IgG anti-HBc). Patients may sometimes be low-level carriers with a negative HbsAg and only a positive IgG anti-HBc. Hepatitis D requires the presence of HbsAg to cause infection. It is associated with acute HBV infection (predominantly in intravenous drug users) but the overall incidence is low. When a patient presents with this pattern, repeating the tests in two to three months may assist in the diagnosis. If the IgM anti-HBc disappears and either a hepatitis B surface antibody or IgG anti-HBc appears, then it is likely that he had an acute infection.
A patient with a diagnosis of hypocalcemia is being treated with calcium gluconate. Which nursing intervention is essential while administering this medication?
A. Monitor the patient for bradycardia and hypotension.
B. Check for signs of increased intracranial pressure.
C. Observe for symptoms of hyperkalemia.
D. Evaluate for nausea and vomiting post-administration.
Correct answer:
Rationale for Correct Answer A: While administering calcium gluconate for hypocalcemia, monitoring for bradycardia and hypotension is essential due to the potential risk of cardiac arrhythmias with rapid calcium infusion. Bradycardia and hypotension are common signs of calcium gluconate toxicity. Therefore, close monitoring of vital signs is crucial to prevent serious complications.
Summary of Incorrect Choices:
B: Checking for signs of increased intracranial pressure is not directly related to calcium gluconate administration for hypocalcemia.
C: Observing for symptoms of hyperkalemia is not relevant as calcium gluconate does not typically cause hyperkalemia.
D: Evaluating for nausea and vomiting post-administration is not a priority compared to monitoring for bradycardia and hypotension, which are more critical potential side effects of calcium gluconate.
A 52-year-old man with a history of hypertension presents for a follow-up visit. He denies any complaints. His only medication is hydrochlorothiazide. He has some laboratory tests done that reveal mild elevations of his ALT and AST levels. His total bilirubin and alkaline phosphatase levels are normal. He is brought back to have his tests repeated and to have further testing. His AST and ALT are still elevated. His iron studies are normal. His hepatitis C antibody is negative. His hepatitis A IgM is negative. His hepatitis B surface antigen and antibody are negative. His IgM antibody to hepatitis B core antigen (IgM anti-HBc) is positive. Which of the following statements is correct?
A. He is a chronic carrier of the hepatitis B virus
B. There is a $90 \%$ chance that he is positive for hepatitis D
C. Hepatitis B infection has been ruled out
D. If his hepatitis B surface antibody turns positive in three months, then he had an acute hepatitis B infection
Correct answer:
The most specific marker for the diagnosis of acute hepatitis B is IgM antibody to hepatitis B core antigen (IgM anti-HBc). However, false positives can occur. Chronic carriers of hepatitis B will typically have a positive hepatitis B surface antigen (HbsAg) and a positive IgG antibody to hepatitis B core antigen (IgG anti-HBc). Patients may sometimes be low-level carriers with a negative HbsAg and only a positive IgG anti-HBc. Hepatitis D requires the presence of HbsAg to cause infection. It is associated with acute HBV infection (predominantly in intravenous drug users) but the overall incidence is low. When a patient presents with this pattern, repeating the tests in two to three months may assist in the diagnosis. If the IgM anti-HBc disappears and either a hepatitis B surface antibody or IgG anti-HBc appears, then it is likely that he had an acute infection.
A 52-year-old man with a history of hypertension presents for a follow-up visit. He denies any complaints. His only medication is hydrochlorothiazide. He has some laboratory tests done that reveal mild elevations of his ALT and AST levels. His total bilirubin and alkaline phosphatase levels are normal. He is brought back to have his tests repeated and to have further testing. His AST and ALT are still elevated. His iron studies are normal. His hepatitis C antibody is negative. His hepatitis A IgM is negative. His hepatitis B surface antigen and antibody are negative. His IgM antibody to hepatitis B core antigen (IgM anti-HBc) is positive. Which of the following statements is correct?
A. He is a chronic carrier of the hepatitis B virus
B. There is a $90 \%$ chance that he is positive for hepatitis D
C. Hepatitis B infection has been ruled out
D. If his hepatitis B surface antibody turns positive in three months, then he had an acute hepatitis B infection
Correct answer:
The most specific marker for the diagnosis of acute hepatitis B is IgM antibody to hepatitis B core antigen (IgM anti-HBc). However, false positives can occur. Chronic carriers of hepatitis B will typically have a positive hepatitis B surface antigen (HbsAg) and a positive IgG antibody to hepatitis B core antigen (IgG anti-HBc). Patients may sometimes be low-level carriers with a negative HbsAg and only a positive IgG anti-HBc. Hepatitis D requires the presence of HbsAg to cause infection. It is associated with acute HBV infection (predominantly in intravenous drug users) but the overall incidence is low. When a patient presents with this pattern, repeating the tests in two to three months may assist in the diagnosis. If the IgM anti-HBc disappears and either a hepatitis B surface antibody or IgG anti-HBc appears, then it is likely that he had an acute infection.
A 52-year-old man with a history of hypertension presents for a follow-up visit. He denies any complaints. His only medication is hydrochlorothiazide. He has some laboratory tests done that reveal mild elevations of his ALT and AST levels. His total bilirubin and alkaline phosphatase levels are normal. He is brought back to have his tests repeated and to have further testing. His AST and ALT are still elevated. His iron studies are normal. His hepatitis C antibody is negative. His hepatitis A IgM is negative. His hepatitis B surface antigen and antibody are negative. His IgM antibody to hepatitis B core antigen (IgM anti-HBc) is positive. Which of the following statements is correct?
A. He is a chronic carrier of the hepatitis B virus
B. There is a $90 \%$ chance that he is positive for hepatitis D
C. Hepatitis B infection has been ruled out
D. If his hepatitis B surface antibody turns positive in three months, then he had an acute hepatitis B infection
Correct answer:
The most specific marker for the diagnosis of acute hepatitis B is IgM antibody to hepatitis B core antigen (IgM anti-HBc). However, false positives can occur. Chronic carriers of hepatitis B will typically have a positive hepatitis B surface antigen (HbsAg) and a positive IgG antibody to hepatitis B core antigen (IgG anti-HBc). Patients may sometimes be low-level carriers with a negative HbsAg and only a positive IgG anti-HBc. Hepatitis D requires the presence of HbsAg to cause infection. It is associated with acute HBV infection (predominantly in intravenous drug users) but the overall incidence is low. When a patient presents with this pattern, repeating the tests in two to three months may assist in the diagnosis. If the IgM anti-HBc disappears and either a hepatitis B surface antibody or IgG anti-HBc appears, then it is likely that he had an acute infection.
During a long-distance run on a hot day, an athlete produces large quantities of sweat. As a result, the kidneys change the rate of urine production. Why is this change important?
A. Decreased urine production increases the amino acids in the blood.
B. Increased urine production removes amino acids produced as a result of running.
C. Decreased urine production allows the body to conserve water.
D. Increased urine production allows more water to remain in the bloodstream.
Correct answer:
The correct answer is C: Decreased urine production allows the body to conserve water. When an athlete sweats a lot during a long-distance run on a hot day, the body loses water through sweat. To prevent dehydration, the kidneys reduce urine production, allowing the body to retain more water. This helps maintain proper hydration levels and prevent water loss.
Rationale:
A: Decreased urine production does not directly impact amino acids in the blood. Amino acids are primarily regulated by protein metabolism and dietary intake.
B: Increased urine production does not specifically target the removal of amino acids produced during exercise. Amino acids are typically metabolized and used for energy or protein synthesis.
D: Increased urine production does not help more water remain in the bloodstream. Excess water is typically excreted to maintain fluid balance.
LPN exams gastrointestinal practice questions, set 9 for nursing students in the United States. Fifteen items. Five include answers and rationales in American English.
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