A nurse is preparing to administer potassium chloride 30 mEq PO daily. The amount available is potassium chloride 20 mEq/15mL. How many mL should the nurse administer?
(Round the answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["23"]
To determine how many milliliters (mL) of potassium chloride the nurse should administer to provide 30 mEq, we can set up a proportion:
20 mEq is contained in 15 mL. So, to find out how many mL contain 30 mEq, we can set up the proportion:
20 mEq:15 mL=30 mEq:? mL20mEq:15mL=30mEq:xmL
Cross multiply:
20×?=15×3020×x=15×30
20?=45020x=450
Now, solve for ?x:
?=45020x=20450
?=22.5x=22.5
So, the nurse should administer approximately 22.5 mL of potassium chloride.
Rounded to the nearest whole number, this would be 23 mL.
Therefore, the nurse should administer 23 mL of potassium chloride.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Black Cohosh: This herb is more commonly used for menopausal symptoms and not typically associated with immune system benefits.
B. Gingko: Gingko is primarily studied for its potential benefits on memory and cognitive function, not necessarily the immune system.
C. Kava Kava: Kava kava is known for its calming effects and used for anxiety relief, not immune system support.
D. Echinacea: This herb has been widely studied and used for centuries for its potential immune-boosting properties. While research results are somewhat mixed, it's one of the most popular herbs associated with immune support.
Correct Answer is B
Explanation
A. Use a 22-gauge needle to inject the medication.
This is inappropriate. Subcutaneous injections typically require a smaller gauge needle, usually between 25 to 30 gauge, to minimize tissue damage and discomfort. A 22-gauge needle is too large for subcutaneous injections and is more appropriate for intramuscular injections.
B. Inject the medication into the abdomen above the level of the iliac crest.
This is appropriate. The preferred site for subcutaneous heparin injection is the abdomen, avoiding areas near the umbilicus by at least 2 inches. Injecting above the level of the iliac crest is appropriate as it ensures the medication is administered into the subcutaneous tissue where it can be properly absorbed. The abdomen is chosen due to its ample subcutaneous tissue and relatively few large blood vessels, reducing the risk of bleeding and bruising.
C. Massage the injection site after administration of the medication.
This is inappropriate. Massaging the injection site after administering heparin is not recommended as it can cause bruising and increase the risk of bleeding. Heparin is an anticoagulant, and massaging the site can disrupt the tissue and lead to complications.
D. Use a 1-inch needle to inject the medication.
This is inappropriate. A 1-inch needle is generally used for intramuscular injections, not subcutaneous injections. For subcutaneous injections, a shorter needle (usually 3/8 to 5/8 inch) is sufficient to reach the subcutaneous tissue without penetrating too deeply into muscle tissue.
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