Question 1

Drugs such as cimetidine (Tagamet) and ranitidine (Zantac) that selectively block histamine type 2 (H2) receptors on stomach parietal cells:

Accepted Answer

A)  prevent the histamine-activated release of gastric acid.
B)  are available only by prescription.
C)  are known as antihistamines.
D)  all of the above
E)  none of the aboveF) B) and D)
G) A) and B) A

Question 2

Natural and synthetic opioid drugs _____ gastrointestinal motility,and are therefore useful in treating _____.

Accepted Answer

A)  increase;diarrhea
B)  decrease;diarrhea
C)  increase;constipation
D)  decrease;constipation
E)  none of the above;opioids do not affect gastrointestinal motilityF) C) and D)
G) A) and B)

Question 3

In many patients with gastric ulcers,antibacterial drugs are often combined with proton pump inhibitors to help eliminate ________ infection as a potentiating factor in ulcer formation.

Accepted Answer

A)  H.pylori
B)  streptococcal
C)  E.coli
D)  giardia
E)  P.aeruginosaF) B) and E)
G) A) and D)

Question 4

Proton pump inhibitors such as omeprazole (Prilosec) and esomeprazole (Nexium) are useful in reducing gastric acid secretion because they:

Accepted Answer

A)  contain a base that chemically neutralizes gastric acid.
B)  block the effects of histamine on stomach H2 receptors.
C)  inhibit the enzyme that secretes acid from gastric parietal cells into the lumen of the stomach.
D)  inhibit the enzyme that transports sodium out of gastric parietal cells and transports potassium into these cells.
E)  none of the above;these drugs are not useful in reducing gastric acid secretion.F) A) and E)
G) A) and D)

Question 5

Most antacid medications contain a chemical base that neutralizes excess _____ ions in the stomach,thereby _____ intragastric pH.

Accepted Answer

A)  hydrogen;increasing
B)  hydrogen;decreasing
C)  sodium;increasing
D)  sodium;decreasing
E)  calcium;increasingF) A) and B)
G) C) and D) A

Question 6

Prolonged or excessive use of antacids should be avoided because:

Accepted Answer

A)  these drugs can alter the metabolism of other drugs that rely on gastric acidity to activate the drug.
B)  these drugs can affect the elimination of other drugs by altering urinary pH.
C)  acid production may increase (acid rebound) when these drugs are suddenly discontinued.
D)  all of the above
E)  none of the aboveF) D) and E)
G) C) and E) D

Question 7

Daily or indiscriminate use of laxatives should be avoided because excessive use can cause:

Accepted Answer

A)  excessive loss of fluids and electrolytes.
B)  irritation of the lower gastrointestinal tract.
C)  impairment or loss of normal mechanisms governing evacuation and defecation.
D)  all of the above
E)  none of the aboveF) All of the above
G) None of the above

Exam 27: Gastrointestinal Drugs

Drugs such as cimetidine (Tagamet) and ranitidine (Zantac) that selectively block histamine type 2 (H2) receptors on stomach parietal cells:

Correct Answer
verified
A

Natural and synthetic opioid drugs _ gastrointestinal motility,and are therefore useful in treating _.

Correct Answer
verified

In many patients with gastric ulcers,antibacterial drugs are often combined with proton pump inhibitors to help eliminate ________ infection as a potentiating factor in ulcer formation.

Correct Answer
verified

Proton pump inhibitors such as omeprazole (Prilosec) and esomeprazole (Nexium) are useful in reducing gastric acid secretion because they:

Correct Answer
verified

Most antacid medications contain a chemical base that neutralizes excess _ ions in the stomach,thereby _ intragastric pH.

Correct Answer
verified
A

Prolonged or excessive use of antacids should be avoided because:

Correct Answer
verified
D

Daily or indiscriminate use of laxatives should be avoided because excessive use can cause:

Correct Answer
verified

Exam 27: Gastrointestinal Drugs

Drugs such as cimetidine (Tagamet) and ranitidine (Zantac) that selectively block histamine type 2 (H2) receptors on stomach parietal cells:

Correct AnswerverifiedA

Natural and synthetic opioid drugs _____ gastrointestinal motility,and are therefore useful in treating _____.

Correct AnswerverifiedShow Answer

In many patients with gastric ulcers,antibacterial drugs are often combined with proton pump inhibitors to help eliminate ________ infection as a potentiating factor in ulcer formation.

Correct AnswerverifiedShow Answer

Proton pump inhibitors such as omeprazole (Prilosec) and esomeprazole (Nexium) are useful in reducing gastric acid secretion because they:

Correct AnswerverifiedShow Answer

Most antacid medications contain a chemical base that neutralizes excess _____ ions in the stomach,thereby _____ intragastric pH.

Correct AnswerverifiedA

Prolonged or excessive use of antacids should be avoided because:

Correct AnswerverifiedD

Daily or indiscriminate use of laxatives should be avoided because excessive use can cause:

Correct AnswerverifiedShow Answer

Correct Answer
verified
A

Natural and synthetic opioid drugs _ gastrointestinal motility,and are therefore useful in treating _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Most antacid medications contain a chemical base that neutralizes excess _ ions in the stomach,thereby _ intragastric pH.

Correct Answer
verified
A

Correct Answer
verified
D

Correct Answer
verified