A nurse is preparing to administer liquid famotidine 20 mg PO every 6 hr for GERD. Available is famotidine 40 mg/5 ml. How many ml. should the nurse administer per dose?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2.5"]
To determine how many milliliters (ml) should be administered per dose, we need to calculate the dose volume using the available concentration of famotidine.
Given:
Famotidine concentration: 40 mg/5 ml
Dose: 20 mg
We can set up a proportion to solve for the volume:
40 mg / 5 ml = 20 mg / x ml
Cross-multiplying the proportion, we get:
40 mg * x ml = 20 mg * 5 ml
Simplifying, we have:
40x = 100
Dividing both sides by 40, we find:
x = 100 / 40
x ≈ 2.5 ml
Therefore, the nurse should administer approximately 2.5 ml of famotidine per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
When reinforcing teaching about cimetidine with a client who has peptic ulcer disease, the nurse should include the following information:
"Wait at least 1 hour after taking the medication before taking an antacid.": Cimetidine is a histamine-2 receptor antagonist that reduces stomach acid production. Taking an antacid too close in time to cimetidine may decrease its effectiveness as antacids can interfere with its absorption. The nurse should advise the client to follow the healthcare provider's instructions regarding the timing and administration of cimetidine and antacids.
The following statements are incorrect or not applicable:
"Expect breast tenderness while taking this medication.": Breast tenderness is not a common side effect of cimetidine. If the client experiences any unusual symptoms or side effects while taking the medication, they should consult their healthcare provider for further evaluation.
"Take this medication on an empty stomach.": To reduce stomach upset, this medication should be taken with food or milk
"Take ibuprofen for occasional aches and pains.": Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that can increase the risk of gastrointestinal complications, including ulcers. In individuals with peptic ulcer disease, it is generally recommended to avoid NSAIDs unless specifically prescribed by a healthcare provider. The nurse should emphasize the importance of discussing any pain management strategies or medications with the healthcare provider before use.
Correct Answer is B
Explanation
After administering lactulose to a client with cirrhosis, the nurse should monitor for the adverse effects of diarrhea. Lactulose is a laxative commonly used in the treatment of hepatic encephalopathy, which can occur in individuals with cirrhosis. One of the intended effects of lactulose is to promote bowel movements and reduce the absorption of ammonia in the gut, thus helping to manage hepatic encephalopathy.
While lactulose can cause adverse effects such as diarrhea, it is not typically associated with peripheral edema. Peripheral edema is often seen in cirrhosis due to fluid retention caused by liver dysfunction.
Dry mouth and headache are less commonly associated with lactulose use and are not typically the primary adverse effects to monitor for in this scenario.

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