LPN exams gastrointestinal practice questions

Correct answer:

Narcotics are contraindicated in the setting of toxic megacolon, as are anticholinergics and other agents that may adversely affect colonic tone such as may occur with hypokalemia or hypomagnesemia. Narcotics decrease colonic transit and can result in increased colonic dilatation and the risk of colonic perforation. Emergent colectomy is indicated in the setting of toxic megacolon if warning features occur such as increasing colon diameter, abdominal distention or decreasing bowel sounds. Even prior to such warning symptoms developing, patients often undergo colectomy in the setting of toxic megacolon if corticosteroids fail to induce remission as ultimately, approximately half of affected patients ultimately require colectomy even when other medical therapies such as cyclosporine induces remission. One week of intravenous cyclosporine induces remission in one half to two thirds of patients with severe ulcerative colitis. Infliximab is better known for its effectiveness in inducing remission in patients with Crohn's disease, but recent studies demonstrate similar effectiveness in treating acute severe ulcerative colitis.

Correct answer:

The correct answer is B: History of untreated depression. Before proceeding with further patient preparation for bariatric surgery, it is crucial to address untreated depression as it can significantly impact the patient's mental and emotional well-being post-operatively. Untreated depression can lead to poor compliance with post-operative instructions, medication management issues, and potentially increase the risk of complications. It is essential to involve the surgeon to assess the patient's psychological readiness for surgery and ensure appropriate support and resources are in place. Incorrect choices: A: History of hypertension - While hypertension should be managed pre-operatively, it is not a critical factor that would require immediate attention before further preparation. C: History of multiple attempts at weight loss - This is a common issue in patients undergoing bariatric surgery and does not pose an immediate risk that needs urgent attention. D: History of sleep apnea treated with CPAP - While sleep apnea is a relevant consideration for bariatric surgery, the fact that it is being treated with

Correct answer:

The correct answer is A: Chronic disease management. Limited access to specialty care in rural areas makes managing chronic conditions challenging. Patients may not have easy access to specialists, leading to delays in treatment and poor disease management. This can result in exacerbation of chronic conditions and increased healthcare costs. B: Access to routine vaccinations is not particularly impacted by limited access to specialty care in rural areas. Vaccinations are often provided by primary care providers or public health clinics, which are more widely available in rural communities. C: Trauma care, while important, is not the healthcare issue that is particularly common in rural areas due to limited access to specialty care. Trauma care is usually provided by emergency departments in hospitals, which may be more limited in rural areas but is not directly related to specialty care access. D: "All of the above" is incorrect because only chronic disease management is specifically affected by limited access to specialty care in rural areas, not routine vaccinations or trauma care.

Correct answer:

This man presents with the hallmarks of Whipple's disease (i.e., abdominal pain, diarrhea, weight loss, and arthralgias). His workup has made the diagnoses of thyroid disease, HIV, inflammatory bowel disease, and collagen vascular diseases unlikely. His small bowel biopsy is consistent with changes seen in Whipple's disease. Electron microscopy of the specimen should be able to identify the Whipple bacillus. In contrast, the pathologic findings in celiac disease include decreased villous height to crypt depth, decreased epithelial surface cell height, and increased lymphocytic infiltration of the mucosa. PAS-positive material in the lamina propria is not seen. The treatment for Whipple's disease is one year of trimethoprim/sulfamethoxazole. A gluten-free diet would be used for celiac disease. A lactose-free diet is indicated for patients with lactose intolerance. Cholestyramine is used for patients with bile acid diarrhea, usually in the setting of ileal disease. Prednisone can be used in some cases of inflammatory bowel disease and refractory celiac sprue but is not appropriate for Whipple's.

Correct answer:

This man presents with the hallmarks of Whipple's disease (i.e., abdominal pain, diarrhea, weight loss, and arthralgias). His workup has made the diagnoses of thyroid disease, HIV, inflammatory bowel disease, and collagen vascular diseases unlikely. His small bowel biopsy is consistent with changes seen in Whipple's disease. Electron microscopy of the specimen should be able to identify the Whipple bacillus. In contrast, the pathologic findings in celiac disease include decreased villous height to crypt depth, decreased epithelial surface cell height, and increased lymphocytic infiltration of the mucosa. PAS-positive material in the lamina propria is not seen. The treatment for Whipple's disease is one year of trimethoprim/sulfamethoxazole. A gluten-free diet would be used for celiac disease. A lactose-free diet is indicated for patients with lactose intolerance. Cholestyramine is used for patients with bile acid diarrhea, usually in the setting of ileal disease. Prednisone can be used in some cases of inflammatory bowel disease and refractory celiac sprue but is not appropriate for Whipple's.

Correct answer:

Acute GI bleeding from a lower GI source does not cause hemodynamic compromise as commonly as GI bleeding from an upper source. Therefore, despite the absence of melena and no appearance of hematemesis, the hemodynamic compromise indicates that an upper GI source should be sought. Ulcers that arise in the duodenal bulb can erode into the gastroduodenal artery, giving rise to brisk blood loss. A negative nasogastric aspirate does not rule out the possibility. Although diverticular bleeds account for most episodes of acute lower GI bleeding and can occasionally be associated with hemodynamic compromise, the normal barium enema one year ago makes it less likely that the bleeding was of diverticular origin. Inflammatory bowel disease is rarely the cause of severe acute GI bleeding unless an ulcer has eroded into a vessel. Watermelon stomach is associated with chronic GI blood loss from vessel ectasias, presents as iron deficiency anemia, and is found primarily in older women. The presentation is not suggestive of a Mallory-Weiss tear because there was no vomiting, and hematochezia was present.

Correct answer:

Acute GI bleeding from a lower GI source does not cause hemodynamic compromise as commonly as GI bleeding from an upper source. Therefore, despite the absence of melena and no appearance of hematemesis, the hemodynamic compromise indicates that an upper GI source should be sought. Ulcers that arise in the duodenal bulb can erode into the gastroduodenal artery, giving rise to brisk blood loss. A negative nasogastric aspirate does not rule out the possibility. Although diverticular bleeds account for most episodes of acute lower GI bleeding and can occasionally be associated with hemodynamic compromise, the normal barium enema one year ago makes it less likely that the bleeding was of diverticular origin. Inflammatory bowel disease is rarely the cause of severe acute GI bleeding unless an ulcer has eroded into a vessel. Watermelon stomach is associated with chronic GI blood loss from vessel ectasias, presents as iron deficiency anemia, and is found primarily in older women. The presentation is not suggestive of a Mallory-Weiss tear because there was no vomiting, and hematochezia was present.

Correct answer:

Step 1: Reuptake of the transmitter at the presynaptic terminal: This process involves the retrieval of excess neurotransmitter molecules back into the presynaptic neuron, preventing excessive accumulation in the synapse. Step 2: Enzymatic degradation of the transmitter within the synapse: Enzymes break down excess neurotransmitter molecules in the synapse, helping to maintain optimal levels and preventing overstimulation of the post synaptic terminal. Step 3: Negative feedback to inhibit further release of the transmitter: When neurotransmitter levels are high, negative feedback mechanisms can inhibit further release, preventing excessive accumulation and maintaining synaptic balance. Summary: - Option A and B are correct because reuptake and enzymatic degradation help prevent excessive accumulation of neurotransmitters. - Option C is also correct as negative feedback mechanisms play a role in regulating neurotransmitter release. - Therefore, the correct answer is D, as all of the above mechanisms work together to prevent excessive accumulation of neurotransmitters.

Correct answer:

The correct answer is A: Encourage the patient to share concerns and ask questions. This option promotes therapeutic communication and allows the patient to express their fears and anxieties, which can help in addressing their concerns and building trust. By encouraging the patient to share their feelings, the nurse can provide emotional support and offer appropriate education tailored to the patient's needs. This approach empowers the patient to take an active role in their care and decision-making process. Summary: - Option B (Refer the patient to a chaplain): While spiritual support can be beneficial, in this case, the patient's immediate need is to address their concerns about the colostomy. - Option C (Explain that there is nothing the patient can do about it): This response is dismissive and not empowering for the patient, undermining their ability to cope effectively. - Option D (Tell the patient that learning about it will prevent issues): While education is important, forcing information on the patient without addressing their emotional needs may result in

Correct answer:

Rationale for Correct Answer (D): By assessing for gastric residual before administering another feeding through the nasogastric tube, the nurse can evaluate absorption of the last feeding. If there is a significant amount of residual, it may indicate poor absorption, which could lead to complications such as aspiration. This assessment helps in determining the appropriate timing and amount of the next feeding to prevent complications. Summary of Incorrect Choices: A: Confirming proper nasogastric tube placement is typically done using other methods like pH testing or X-ray. This assessment does not directly relate to evaluating absorption. B: Observing gastric contents may provide information about the patient's gastric secretions but does not specifically help in evaluating the absorption of the last feeding. C: Assessing fluid and electrolyte status is important but not the primary purpose of checking gastric residual before administering a feeding. This assessment is more focused on monitoring the patient's overall hydration and electrolyte balance.