A client with multiple sclerosis (MS) is receiving interferon beta-1b 0.1875 mg subcutaneously every other day. The nurse reconstitutes the vial by slowly injecting 1.2 mL of diluent into the interferon vial for a reconstituted solution of 0.25 mg/1 mL. How many mL should the nurse administer?

(Enter numeric value only. If rounding is required, round to the nearest hundredth.)

Answer and Explanation

The Correct Answer is ["0.75"]

Calculate the volume of the reconstituted solution that contains the prescribed dose of 0.1875 mg. Since the reconstituted solution has a concentration of 0.25 mg per 1 mL, we can set up a proportion to find the answer: (0.1875 mg / X mL) = (0.25 mg / 1 mL).

Solving for X gives us X = (0.1875 mg * 1 mL) / 0.25 mg, which equals 0.75 mL.

Therefore, the nurse should administer 0.75 mL of the reconstituted solution.

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Correct Answer is B

Explanation

Rationale

A. This statement is partially true as most sexually transmitted infections (STIs), including syphilis, are primarily transmitted through sexual intercourse. However, not all STIs are exclusively transmitted through sexual contact.

B. Syphilis is caused by the bacterium Treponema pallidum and can be transmitted through direct contact with a syphilitic sore (chancre) during vaginal, anal, or oral sex. If a person has syphilis and engages in unprotected sex with a partner who is not treated, they can potentially contract or transmit the infection again, leading to reinfection.

C. While contraceptives such as condoms provide protection against unintended pregnancy and some STIs, including syphilis, they do not offer complete protection against all STIs. Condoms are effective in reducing the risk of transmission of syphilis when used consistently and correctly, but they are not 100% protective.

D. Using safe sex practices, such as consistent and correct use of condoms, reduces the risk of acquiring or transmitting STIs, including syphilis. Safe sex practices also include mutual monogamy and regular testing for STIs, especially for those who have multiple sexual partners or engage in high-risk sexual behaviors.

Correct Answer is ["12.5"]

Explanation

To calculate the dosage of amoxicillin suspension to be administered every 8 hours, one must first determine the total daily dosage in milligrams. Since 1 gram equals 1000 milligrams, 1.5 grams is equivalent to 1500 milligrams. This total daily dosage needs to be divided into three doses, as it will be administered every 8 hours.

Therefore, each dose will be 1500 mg divided by 3, which equals 500 mg per dose. The medication bottle states that there are 200 mg of amoxicillin in every 5 mL of suspension. To find out how many mL correspond to a 500 mg dose, set up a proportion: 200 mg/5 mL = 500 mg/x mL. Solving for x gives x = (500 mg * 5 mL) / 200 mg, which equals 12.5 mL

Therefore, the nurse should administer 12.5 mL of the amoxicillin suspension every 8 hours.

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Naxlex Comprehensive Predictor Exams

The nurse is caring for a client with the sexually transmitted infection (STI) syphilis. The client reports having unprotected sex. Which response should the nurse provide?

Correct Answer is B

Explanation

Correct Answer is ["12.5"]

Explanation

A client with septic shock develops disseminated intravascular coagulation (DIC). Which pathophysiologic process should the nurse recognize as the cause of the coagulation problem?

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