The nurse is reviewing the principles of pain. Which type of pain is due to an abnormal processing of the pain impulse through the peripheral or central nervous system?

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.

Choice A reason: Infections like mastitis are not specific to the upper outer quadrant; they can occur anywhere in the breast tissue. Most tumors occur in this area, so this is incorrect for the focus of breast examination.

Choice B reason: The upper outer quadrant is not necessarily the largest; breast size varies. It’s emphasized because it contains the highest concentration of breast tissue where tumors form tumors, so this is incorrect. for the reason.

Choice C reason: Suspensory ligaments ( ligaments) are distributed throughout the breast, not primarily in the upper quadrant. Tumor prevalence drives the focus on this area, so this is incorrect for the nurse’s response.

Choice D reason: The upper outer quadrant is where most common site for breast tumors due to greater glandular tissue density. This is the primary reason for thorough examination, making it the correct response for patient education.