The provider has ordered 180 mg of Dilantin PO every 8 hours. The label of the drug reads 250 mg per 5 ml. How many milliliters will the nurse administer per dose?
3.6 ml
4.5 ml
5 ml
7 ml
The Correct Answer is A
Choice A reason: To calculate the dose, divide the ordered 180 mg by the concentration of 250 mg per 5 ml: (180 mg ÷ 250 mg) × 5 ml = 0.72 × 5 = 3.6 ml. This precise calculation ensures the correct amount of Dilantin is administered, matching the provider’s order.
Choice B reason: A 4.5 ml dose would deliver 225 mg (4.5 ml × 250 mg/5 ml), exceeding the ordered 180 mg. This overdose could increase the risk of toxicity, as Dilantin has a narrow therapeutic range, making this an incorrect choice.
Choice C reason: A 5 ml dose delivers 250 mg (5 ml × 250 mg/5 ml), significantly more than the ordered 180 mg. This excessive dose could lead to adverse effects like ataxia or nystagmus, rendering this choice incorrect for the prescribed amount.
Choice D reason: A 7 ml dose would provide 350 mg (7 ml × 250 mg/5 ml), far exceeding the ordered 180 mg. Such a high dose could cause severe toxicity, including neurological symptoms, making this an inappropriate and unsafe choice.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Statements from the victim are valuable but not required for reporting elder abuse. Mandatory reporters must act on reasonable suspicion, as victims may be unable or unwilling to report due to fear or incapacity, making this incorrect.
Choice B reason: Witness statements support abuse cases but are not mandatory for reporting. Nurses must report based on suspicion, as waiting for witness corroboration could delay protection, making this an incorrect requirement for notification.
Choice C reason: As a mandatory reporter, a nurse must notify authorities based on reasonable suspicion of abuse or neglect, as per legal standards. This ensures timely intervention to protect vulnerable elders, even without definitive proof, making this correct.
Choice D reason: Proof of abuse or neglect is not required for reporting, as mandatory reporters act on suspicion. Requiring proof could delay or prevent reporting, leaving elders at risk, making this an incorrect threshold for notification.
Correct Answer is C
Explanation
Choice A reason: Low parity (few pregnancies) is not a primary risk factor for cervical cancer; high parity may be. Multiple sexual partners increase HPV exposure, the main cause, so this is incorrect.
Choice B reason: Endometriosis affects the uterus, not the cervix, and isn’t linked to cervical cancer. HPV from multiple partners is the key risk, so this is incorrect for the discussion.
Choice C reason: Multiple sexual partners increase the risk of HPV infection, the primary cause of cervical cancer. This is the most significant risk factor, making it the correct focus for teaching teens.
Choice D reason: Obesity is linked to some cancers but not strongly to cervical cancer. HPV exposure via multiple partners is the dominant risk, so this is incorrect for the nurse’s discussion.
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