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Questions and Answers
Which agent is contraindicated in pregnancy due to its potential to stimulate uterine contractions and cause miscarriage?
Which agent is contraindicated in pregnancy due to its potential to stimulate uterine contractions and cause miscarriage?
- Misoprostol (correct)
- Sucralfate
- Doxycycline
- Ampicillin
Which agent is preferred for the prevention of NSAID-induced ulcers over Misoprostol?
Which agent is preferred for the prevention of NSAID-induced ulcers over Misoprostol?
- Sucralfate
- Ampicillin
- PPIs (correct)
- Doxycycline
Which agent is effective for the treatment of duodenal ulcers and prevention of stress ulcers but has limited use due to the need for multiple daily dosing and drug–drug interactions?
Which agent is effective for the treatment of duodenal ulcers and prevention of stress ulcers but has limited use due to the need for multiple daily dosing and drug–drug interactions?
- Doxycycline
- Sucralfate (correct)
- Ampicillin
- Misoprostol
Which agent requires an acidic pH for activation and should not be administered with PPIs, H2 antagonists, or antacids?
Which agent requires an acidic pH for activation and should not be administered with PPIs, H2 antagonists, or antacids?
Which agent forms complex gels with epithelial cells, creating a physical barrier that protects the ulcer from pepsin and acid, allowing the ulcer to heal?
Which agent forms complex gels with epithelial cells, creating a physical barrier that protects the ulcer from pepsin and acid, allowing the ulcer to heal?
Which drug interaction may decrease the excretion rate of Abacavir, resulting in a higher serum level?
Which drug interaction may decrease the excretion rate of Abacavir, resulting in a higher serum level?
Which agent inhibits the activity of pepsin, increases secretion of mucus, and interacts with glycoproteins in necrotic mucosal tissue to coat and protect the ulcer?
Which agent inhibits the activity of pepsin, increases secretion of mucus, and interacts with glycoproteins in necrotic mucosal tissue to coat and protect the ulcer?
Which agent may increase the excretion rate of Sucralfate, resulting in a lower serum level and potentially a reduction in efficacy?
Which agent may increase the excretion rate of Sucralfate, resulting in a lower serum level and potentially a reduction in efficacy?
Which agent is used as a component of quadruple therapy to heal peptic ulcers and has antimicrobial actions?
Which agent is used as a component of quadruple therapy to heal peptic ulcers and has antimicrobial actions?
Which class of medications irreversibly inactivates the H+/K+-ATPase enzyme system?
Which class of medications irreversibly inactivates the H+/K+-ATPase enzyme system?
What is the main excretory route for cimetidine, ranitidine, famotidine, and nizatidine?
What is the main excretory route for cimetidine, ranitidine, famotidine, and nizatidine?
Which class of medications may increase the risk of nosocomial pneumonia and cause bradycardia and hypotension when administered intravenously?
Which class of medications may increase the risk of nosocomial pneumonia and cause bradycardia and hypotension when administered intravenously?
Which class of medications is used for stress ulcer treatment, GERD, erosive esophagitis, active peptic and duodenal ulcers, and pathologic hypersecretory conditions?
Which class of medications is used for stress ulcer treatment, GERD, erosive esophagitis, active peptic and duodenal ulcers, and pathologic hypersecretory conditions?
Which condition is thought to be involved in the pathogenesis of peptic ulcers?
Which condition is thought to be involved in the pathogenesis of peptic ulcers?
Which side effect may occur with long-term use or high doses of H2 antagonists or proton pump inhibitors (PPIs)?
Which side effect may occur with long-term use or high doses of H2 antagonists or proton pump inhibitors (PPIs)?
What is the main cause of peptic ulcer disease?
What is the main cause of peptic ulcer disease?
Which drug classification aims to eradicate H. pylori infection?
Which drug classification aims to eradicate H. pylori infection?
What is the mechanism of action of H2-Receptor Antagonists?
What is the mechanism of action of H2-Receptor Antagonists?
Which factor is associated with peptic ulcer disease?
Which factor is associated with peptic ulcer disease?
What is the primary function of Proton Pump Inhibitors in treating peptic ulcers?
What is the primary function of Proton Pump Inhibitors in treating peptic ulcers?
What is the role of Mucosal Protective Agents in peptic ulcer treatment?
What is the role of Mucosal Protective Agents in peptic ulcer treatment?
Which factor contributes to inadequate mucosal defense against gastric acid?
Which factor contributes to inadequate mucosal defense against gastric acid?
What is the main pharmacological approach for eradicating H. pylori infection in peptic ulcer treatment?
What is the main pharmacological approach for eradicating H. pylori infection in peptic ulcer treatment?
How do Prostaglandins contribute to the treatment of peptic ulcers?
How do Prostaglandins contribute to the treatment of peptic ulcers?
What is the primary function of Antacids in treating peptic ulcers?
What is the primary function of Antacids in treating peptic ulcers?
Which H2 antagonist has little first-pass metabolism?
Which H2 antagonist has little first-pass metabolism?
Which side effect may occur in less than 3% of patients using H2 antagonists or proton pump inhibitors?
Which side effect may occur in less than 3% of patients using H2 antagonists or proton pump inhibitors?
Which proton pump inhibitor may increase the risk of bone fractures and dementia?
Which proton pump inhibitor may increase the risk of bone fractures and dementia?
Which proton pump inhibitor is available in intravenous formulation?
Which proton pump inhibitor is available in intravenous formulation?
Which agent may decrease the excretion rate of Abacavir, resulting in a higher serum level?
Which agent may decrease the excretion rate of Abacavir, resulting in a higher serum level?
Which agent may increase the excretion rate of Sucralfate, potentially leading to a lower serum level and reduced efficacy?
Which agent may increase the excretion rate of Sucralfate, potentially leading to a lower serum level and reduced efficacy?
Which agent requires an acidic pH for activation and should not be administered with PPIs, H2 antagonists, or antacids?
Which agent requires an acidic pH for activation and should not be administered with PPIs, H2 antagonists, or antacids?
Which agent forms complex gels with epithelial cells, creating a physical barrier that protects the ulcer from pepsin and acid, allowing the ulcer to heal?
Which agent forms complex gels with epithelial cells, creating a physical barrier that protects the ulcer from pepsin and acid, allowing the ulcer to heal?
What is the primary function of Proton Pump Inhibitors in treating peptic ulcers?
What is the primary function of Proton Pump Inhibitors in treating peptic ulcers?
What is the main pharmacological approach for eradicating H. pylori infection in peptic ulcer treatment?
What is the main pharmacological approach for eradicating H. pylori infection in peptic ulcer treatment?
What is the role of Mucosal Protective Agents in peptic ulcer treatment?
What is the role of Mucosal Protective Agents in peptic ulcer treatment?
Which agent is used as a component of quadruple therapy to heal peptic ulcers and has antimicrobial actions?
Which agent is used as a component of quadruple therapy to heal peptic ulcers and has antimicrobial actions?
Which factor contributes to inadequate mucosal defense against gastric acid?
Which factor contributes to inadequate mucosal defense against gastric acid?
What is the main cause of peptic ulcer disease?
What is the main cause of peptic ulcer disease?
Which class of medications irreversibly inactivates the H+/K+-ATPase enzyme system?
Which class of medications irreversibly inactivates the H+/K+-ATPase enzyme system?
Which factor is associated with inadequate mucosal defense against gastric acid in peptic ulcer disease?
Which factor is associated with inadequate mucosal defense against gastric acid in peptic ulcer disease?
What is the primary function of Antacids in treating peptic ulcers?
What is the primary function of Antacids in treating peptic ulcers?
Which agent is used for the treatment of duodenal ulcers, prevention of stress ulcers, but has limited use due to the need for multiple daily dosing and drug–drug interactions?
Which agent is used for the treatment of duodenal ulcers, prevention of stress ulcers, but has limited use due to the need for multiple daily dosing and drug–drug interactions?
What is the main excretory route for cimetidine, ranitidine, famotidine, and nizatidine?
What is the main excretory route for cimetidine, ranitidine, famotidine, and nizatidine?
Which class of medications is used for stress ulcer treatment, GERD, erosive esophagitis, active peptic and duodenal ulcers, and pathologic hypersecretory conditions?
Which class of medications is used for stress ulcer treatment, GERD, erosive esophagitis, active peptic and duodenal ulcers, and pathologic hypersecretory conditions?
What is the role of Mucosal Protective Agents in peptic ulcer treatment?
What is the role of Mucosal Protective Agents in peptic ulcer treatment?
Study Notes
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Preparations known as H2 antagonists, including cimetidine, ranitidine, famotidine, and nizatidine, potently inhibit gastric acid secretion.
-
These medications are competitive antagonists of histamine and are reversible. They inhibit basal, food-stimulated, and nocturnal secretion by more than 90%.
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Uses: treatment of peptic ulcers, acute stress ulcers, and gastroesophageal reflux disease (GERD).
-
After oral administration, these agents are rapidly absorbed from the intestine and distribute widely throughout the body. They are excreted mainly in urine.
-
Cimetidine, ranitidine, and famotidine have a bioavailability of approximately 50% due to first-pass hepatic metabolism. Nizatidine has little first-pass metabolism.
-
Side effects of H2 antagonists include diarrhea, headache, fatigue, myalgia, and constipation in less than 3% of patients. Long-term use or high doses may cause gynecomastia or impotence in men.
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Intravenous administration of H2 antagonists or proton pump inhibitors may increase the risk of nosocomial pneumonia and cause bradycardia and hypotension. Mental status changes, such as confusion, hallucinations, agitation, and mental confusion, may occur in elderly or hepatic or renal dysfunction patients.
-
Proton pump inhibitors (PPIs) are another class of acid-reducing medications that bind to the H+/K+-ATPase enzyme system and irreversibly inactivate it. PPIs are: omeprazole, esomeprazole, lansoprazole, pantoprazole, and rabeprazole.
-
PPIs are used for stress ulcer treatment, GERD, erosive esophagitis, active peptic and duodenal ulcers, and pathologic hypersecretory conditions. They also reduce the risk of bleeding from ulcers caused by aspirin and other NSAIDs and eradicate H. pylori.
-
PPIs have short serum half-lives but acid inhibition lasts up to 24 hours due to irreversible inactivation of the proton pump. Metabolites are excreted in urine and feces.
-
PPIs may increase the risk of bone fractures, dementia, mental confusion, impotence, and gynecomastia. Esomeprazole, lansoprazole, and pantoprazole are available in intravenous formulations.
-
PPIs may decrease the effectiveness of clopidogrel by inhibiting CYP2C19 and prevent the conversion of clopidogrel to its active metabolite. Long-term acid suppression may result in low vitamin B12 due to impaired absorption.
-
H. pylori eradication is achieved through antimicrobial treatment with triple therapy (a PPI, amoxicillin, and clarithromycin) or quadruple therapy (bismuth subsalicylate, metronidazole, tetracycline, and a PPI).
-
Prostaglandins E, produced by the gastric mucosa, inhibit acid secretion and stimulate secretion of mucus and bicarbonate. A deficiency of prostaglandins is thought to be involved in the pathogenesis of peptic ulcers.
-
Preparations known as H2 antagonists, including cimetidine, ranitidine, famotidine, and nizatidine, potently inhibit gastric acid secretion.
-
These medications are competitive antagonists of histamine and are reversible. They inhibit basal, food-stimulated, and nocturnal secretion by more than 90%.
-
Uses: treatment of peptic ulcers, acute stress ulcers, and gastroesophageal reflux disease (GERD).
-
After oral administration, these agents are rapidly absorbed from the intestine and distribute widely throughout the body. They are excreted mainly in urine.
-
Cimetidine, ranitidine, and famotidine have a bioavailability of approximately 50% due to first-pass hepatic metabolism. Nizatidine has little first-pass metabolism.
-
Side effects of H2 antagonists include diarrhea, headache, fatigue, myalgia, and constipation in less than 3% of patients. Long-term use or high doses may cause gynecomastia or impotence in men.
-
Intravenous administration of H2 antagonists or proton pump inhibitors may increase the risk of nosocomial pneumonia and cause bradycardia and hypotension. Mental status changes, such as confusion, hallucinations, agitation, and mental confusion, may occur in elderly or hepatic or renal dysfunction patients.
-
Proton pump inhibitors (PPIs) are another class of acid-reducing medications that bind to the H+/K+-ATPase enzyme system and irreversibly inactivate it. PPIs are: omeprazole, esomeprazole, lansoprazole, pantoprazole, and rabeprazole.
-
PPIs are used for stress ulcer treatment, GERD, erosive esophagitis, active peptic and duodenal ulcers, and pathologic hypersecretory conditions. They also reduce the risk of bleeding from ulcers caused by aspirin and other NSAIDs and eradicate H. pylori.
-
PPIs have short serum half-lives but acid inhibition lasts up to 24 hours due to irreversible inactivation of the proton pump. Metabolites are excreted in urine and feces.
-
PPIs may increase the risk of bone fractures, dementia, mental confusion, impotence, and gynecomastia. Esomeprazole, lansoprazole, and pantoprazole are available in intravenous formulations.
-
PPIs may decrease the effectiveness of clopidogrel by inhibiting CYP2C19 and prevent the conversion of clopidogrel to its active metabolite. Long-term acid suppression may result in low vitamin B12 due to impaired absorption.
-
H. pylori eradication is achieved through antimicrobial treatment with triple therapy (a PPI, amoxicillin, and clarithromycin) or quadruple therapy (bismuth subsalicylate, metronidazole, tetracycline, and a PPI).
-
Prostaglandins E, produced by the gastric mucosa, inhibit acid secretion and stimulate secretion of mucus and bicarbonate. A deficiency of prostaglandins is thought to be involved in the pathogenesis of peptic ulcers.
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Description
Test your knowledge on the causes and pharmacological treatment of peptic ulcers. Learn about the drug classifications used, their mechanisms of action, pharmacokinetics, side effects, and drug interactions. Understand the medical factors and acidic secretion related to peptic ulcer disease.
