A nurse is teaching a newly licensed nurse about adverse effects of medications.
The nurse should include that which of the following medications can cause constipation?
Anticholinergics/antispasmodics.
Opioid narcotics.
Iron supplements.
Magnesium-containing antacids.
Correct Answer : A,B,C
Choice A rationale
Anticholinergics/antispasmodics can cause constipation by reducing the muscle contractions of the gastrointestinal tract, leading to slower movement of contents and resulting in constipation.
Choice B rationale
Opioid narcotics cause constipation by binding to opioid receptors in the gastrointestinal tract, which decreases intestinal motility and inhibits the secretion of fluids, leading to hard and dry stools.
Choice C rationale
Iron supplements can cause constipation as a common side effect due to their effect on the gastrointestinal tract. They can make stools harder and more difficult to pass.
Choice D rationale
Magnesium-containing antacids typically do not cause constipation. In fact, they are more likely to have a laxative effect due to the presence of magnesium, which can increase water in the intestines and soften stools.
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View Related questions
Correct Answer is C
Explanation
Choice A rationale
Toxic levels refer to concentrations of a medication that are high enough to cause harmful effects or poisoning. This is not related to the lowest serum concentration.
Choice B rationale
Peak levels are the highest concentration of a medication in the bloodstream after administration. This occurs after the drug is absorbed and distributed.
Choice C rationale
Trough levels occur when the medication is at its lowest concentration in the bloodstream, typically just before the next dose is due. Monitoring trough levels helps ensure therapeutic effectiveness while avoiding toxicity.
Choice D rationale
Half-life refers to the time it takes for the concentration of a drug in the bloodstream to decrease by half. It is not directly related to the lowest serum concentration at a specific point in time.
Correct Answer is A
Explanation
Choice A rationale
Colonoscopy is the recommended test for screening for rectal cancer. It allows for direct visualization of the entire colon and rectum, enabling the detection and biopsy of polyps or
suspicious lesions. It is the gold standard for colorectal cancer screening.
Choice B rationale
Endoscopic retrograde cholangiopancreatography (ERCP) is used to diagnose and treat conditions of the bile ducts, pancreas, and gallbladder. It’s not typically used for colorectal
cancer screening.
Choice C rationale
An upper GI series involves X-rays of the upper gastrointestinal tract (esophagus, stomach, and duodenum) after swallowing a contrast medium. This test does not visualize the
lower GI tract, including the colon and rectum, and is therefore not suitable for rectal cancer screening.
Choice D rationale
Upper GI endoscopy allows for direct visualization of the upper gastrointestinal tract but does not reach the colon and rectum. Hence, it is not used for screening rectal cancer