A physician orders Lithium 1.5 grams/day PO in three divided doses for a client with bipolar disorder. The medication is supplied 250 mg/5 mL. How many milliliters will 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 ["10"]
Calculation:
- Convert the total daily dose from grams (g) to milligrams (mg).
1 g = 1000 mg
Total daily dose = 1.5 g × 1000 mg/g
= 1500 mg/day.
- Determine the number of doses per day.
The dose is given in three divided doses, so Number of doses per day = 3 doses/day.
- Calculate the dose per administration in milligrams (mg).
Dose per administration (mg) = Total daily dose (mg) / Number of doses per day
= 1500 mg / 3 doses
= 500 mg/dose.
Available concentration of the medication = 250 mg / 5 mL.
- Calculate the volume in milliliters (mL) to administer per dose.
Volume (mL) = Desired dose per administration (mg) / (Available concentration (mg) / Available volume (mL))
Volume (mL) = 500 mg / (250 mg / 5 mL)
= 500 mg × (5 mL / 250 mg)
= (500 × 5) / 250 mL
= 2500 / 250 mL
= 10 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. 45: PSA screening is not typically recommended for men at average risk starting at age 45. It is usually considered for men at higher risk, such as those with a family history of prostate cancer.
B. 65: While discussions about PSA screening can occur around age 65, it is generally recommended to start earlier for men at average risk, around age 55, for better early detection.
C. 55: The American Cancer Society recommends starting discussions about PSA screening at age 55 for men at average risk of prostate cancer. This allows for informed decision-making regarding the potential benefits and risks of screening.
D. 40: Screening at age 40 is typically reserved for men at high risk, such as those with a family history of prostate cancer. For men at average risk, screening generally begins at age 55.
Correct Answer is ["A","B","E"]
Explanation
A. History of fibrocystic breast tissue: Fibrocystic breast tissue is associated with a slightly increased risk of developing breast cancer. While it is not a direct cause, women with fibrocystic changes may have a higher likelihood of developing breast cancer, particularly if there are other risk factors present.
B. Obesity: Obesity is a well-established risk factor for breast cancer, especially after menopause. Higher levels of body fat can increase estrogen levels, which in turn may promote the growth of hormone-receptor-positive breast cancer cells.
C. BRCA1 negative: A negative BRCA1 gene test means that the individual does not carry a known genetic mutation that significantly increases the risk of breast cancer. The presence of a BRCA1 mutation is linked to a higher risk, while BRCA1 negative does not increase risk.
D. Chronic fatigue: Chronic fatigue is not a recognized risk factor for breast cancer. While it may be a symptom of other underlying conditions, it does not increase the risk of developing breast cancer.
E. Smoking: Smoking is a known risk factor for many cancers, including breast cancer. Chemicals in tobacco can cause DNA damage in breast tissue, leading to an increased risk of cancer, particularly in premenopausal women.
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