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"This medication may cause increased libido." This is incorrect. Cimetidine (Tagamet) can cause side effects such as decreased libido, especially in men. This occurs because the drug inhibits the action of certain hormones, leading to sexual dysfunction.

"You may take this medication with antacids to prevent stomach upset." This is incorrect. Cimetidine should not be taken with antacids because antacids can reduce its absorption and effectiveness. It is advised to space the administration of cimetidine and antacids by at least 1 hour.

"This medication will neutralize your stomach acid." This is incorrect. Cimetidine works by blocking histamine receptors (H2 receptors), which reduces the production of stomach acid but does not neutralize it.

Acute renal failure: This is correct. The combination of metformin and iodine-containing contrast dye increases the risk of acute renal failure, also known as contrast-induced nephropathy (CIN). This occurs because contrast agents can cause kidney damage, and metformin is excreted by the kidneys. If renal function is impaired, the buildup of metformin can lead to lactic acidosis.

Acute pancreatitis: While acute pancreatitis is a possible side effect of metformin in some individuals, the primary concern with iodine-containing contrast dye is renal failure, not pancreatitis.

Acute liver failure: Metformin is primarily metabolized by the kidneys, not the liver, and does not commonly cause liver failure. Renal failure is the more pressing concern with the use of contrast dye in clients taking metformin.

Hypothyroidism: This is incorrect. The client is taking levothyroxine (Synthroid) to treat hypothyroidism, and the symptoms described (diarrhea, weight loss, palpitations, heat intolerance) are more likely associated with excess thyroid hormone, not a lack of it.

Addison's Disease: This is incorrect. Addison's disease is characterized by insufficient production of adrenal hormones and would typically manifest with symptoms such as fatigue, hypotension, and hyperpigmentation, not diarrhea or heat intolerance.

Cushing's Disease: This is incorrect. Cushing's disease is caused by excess cortisol and would typically result in symptoms such as weight gain, high blood pressure, and a round "moon" face, rather than the symptoms described in the question.

4 teaspoons – This is incorrect because 4 teaspoons would provide 400 mg (100 mg x 4 = 400 mg), but the correct dose per administration is 400 mg. However, this is not the correct calculation, as only 2 teaspoons are needed.

1 teaspoon – This is incorrect because 1 teaspoon would only provide 100 mg, and the prescribed dose is 400 mg. This is not enough to meet the prescribed dose.

3 teaspoons – This is incorrect because 3 teaspoons would provide 300 mg (100 mg x 3 = 300 mg), which is not enough to meet the prescribed 400 mg dose.

"An indication for this medication is used in clients taking short-term NSAIDs to prevent duodenal ulcers." – This is incorrect because misoprostol is primarily used for preventing ulcers in clients taking long-term NSAIDs, particularly for individuals at high risk of developing ulcers, not for short-term use.

"This medication is indicated for female clients expecting a child or are currently pregnant." – This is incorrect. Misoprostol is contraindicated during pregnancy due to its ability to cause uterine contractions, which could lead to miscarriage or preterm labor.

"An indication for this medication is used in clients to prevent stress-induced ulcers." – This is incorrect. Misoprostol is not commonly used for preventing stress ulcers. It is mainly used to prevent NSAID-induced ulcers or manage conditions like gastric ulcers, particularly when NSAID use is involved.

Injection pain – This is incorrect. Injection pain is typically related to technique or needle size rather than the location. Rotating injection sites does not specifically address this issue.

Rapid absorption – This is incorrect. Rotating injection sites does not necessarily prevent rapid absorption but ensures more consistent absorption rates.

Intradermal injection – This is incorrect. Intradermal injection occurs when the needle is not inserted deep enough, unrelated to rotating injection sites.