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.)
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale
A. Osteoarthritis is characterized by the gradual destruction of joint cartilage. Cartilage serves as a cushion between the bones in a joint, and its deterioration leads to pain, stiffness, and reduced joint function. As the cartilage wears away, bones may rub directly against each other, causing further pain and damage.
B. Osteoarthritis is primarily a degenerative condition rather than an inflammatory one. While mild inflammation can occur in OA, it is not as prominent as in autoimmune conditions like rheumatoid arthritis. In OA, inflammation is secondary to cartilage damage rather than a primary driver of the disease process.
C. Loss of bone mineral density is more characteristic of osteoporosis, a condition where bones become weak and brittle. Osteoporosis involves a decrease in bone mass throughout the skeleton, whereas osteoarthritis specifically targets the joints and affects cartilage rather than bone density.
D. An infectious process in the synovial fluid could indicate septic arthritis, which is characterized by infection in the joint space. This is typically associated with acute symptoms such as severe joint pain, swelling, warmth, and fever.
Correct Answer is C
Explanation
Rationale
A. Granola and strawberries may be high in fiber, which could potentially worsen diarrhea in some individuals. Tea is generally fine, but it should be non-caffeinated to avoid further irritation to the digestive system.
B. Whole wheat toast can be a good option as it provides carbohydrates for energy without being too heavy. However, coffee is caffeinated and can stimulate bowel movements and increase gastric acid secretion, potentially aggravating diarrhea.
C. Oatmeal is gentle on the stomach and provides soluble fiber, which can help absorb water and bulk up stools. Banana is a good source of potassium, which may be lost during episodes of diarrhea. Herbal tea is non-caffeinated and can help hydrate.
D. Sausage and milk can be high in fat and lactose, which may be difficult to digest, especially during diarrhea. Poached eggs are generally well tolerated, but the overall combination may not be ideal for someone with diarrhea.
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