A nurse is preparing to administer potassium chloride 20 mEq. The amount available is potassium chloride liquid 40 mEq/15 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["7.5"]

We can calculate the volume of potassium chloride solution to administer using the following steps:

Identify the prescribed dose: The nurse needs to administer 20 mEq of potassium chloride.

Identify the concentration of available solution: The potassium chloride liquid is available in a concentration of 40 mEq/15 mL. This means there are 40 milliequivalents (mEq) of potassium chloride in every 15 milliliters (mL) of the solution.

Set up a proportion to find the volume needed:

Desired dose (mEq) : Volume to administer (mL) = Concentration (mEq/mL)

Plug in the values:

20 mEq : Volume to administer (mL) = 40 mEq/15 mL

Solve for the volume:

To isolate the volume (mL), multiply both sides of the proportion by the volume unit (mL) and divide by the dose (mEq).

Volume to administer (mL) = (20 mEq) x (mL) / (40 mEq/15 mL)

We can simplify the calculation before dividing:

Volume to administer (mL) = (20 mEq x 15 mL) / 40 mEq

Volume to administer (mL) = 300 mL / 40 mEq

Volume to administer (mL) = 7.5 mL (round to one decimal place)

Therefore, the nurse should administer 7.5 mL of the potassium chloride solution.

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Correct Answer is D

Explanation

A) A client taking a potassium supplement twice a day:
Taking potassium supplements can actually lower the risk of digoxin toxicity because hypokalemia (low potassium levels) increases the risk of digoxin toxicity. Potassium supplements help maintain adequate potassium levels, which is beneficial for clients taking digoxin.

B) A client taking aluminum hydroxide for gastric upset:
Aluminum hydroxide can bind to digoxin in the gastrointestinal tract, reducing its absorption. This interaction can decrease the effectiveness of digoxin rather than increase the risk of toxicity.

C) A client taking chlorpropamide for type 2 diabetes mellitus:
Chlorpropamide does not interact significantly with digoxin or affect electrolyte levels in a way that would increase the risk of digoxin toxicity.

D) A client taking furosemide for chronic hypertension:
Furosemide, a loop diuretic, can cause hypokalemia and hypomagnesemia, which are risk factors for digoxin toxicity. Low potassium levels enhance the toxicity of digoxin by increasing its binding to cardiac tissue receptors, leading to enhanced cardiac effects.

A. "Clients who have rheumatoid arthritis should not take warfarin." B. "Clients who have diabetes mellitus type 1 should not take warfarin" C. "Clients who have hypertension should not take warfarin" D. "Clients who are pregnant should not take warfarin"

Correct Answer is D

Explanation

A) "Clients who have rheumatoid arthritis should not take warfarin":
Rheumatoid arthritis itself is not a contraindication for warfarin therapy. However, close monitoring is required due to potential interactions with medications used to treat rheumatoid arthritis and the increased risk of bleeding associated with both conditions.

B) "Clients who have diabetes mellitus type 1 should not take warfarin":
Type 1 diabetes mellitus is not a contraindication for warfarin therapy. However, diabetes increases the risk of complications such as peripheral vascular disease, which may necessitate careful monitoring of INR levels and adjustments to warfarin dosage.

C) "Clients who have hypertension should not take warfarin":
Hypertension alone is not a contraindication for warfarin therapy. However, hypertension is a risk factor for cardiovascular diseases that may require anticoagulation therapy. Close monitoring of blood pressure and potential interactions with antihypertensive medications is essential.

D) "Clients who are pregnant should not take warfarin":
Pregnancy is a contraindication for warfarin therapy due to its teratogenic effects, which can cause fetal harm or birth defects. Pregnant clients requiring anticoagulation therapy may be prescribed alternative medications that are safer during pregnancy, under the guidance of a healthcare provider.

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A nurse is preparing to administer potassium chloride 20 mEq. The amount available is potassium chloride liquid 40 mEq/15 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

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Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

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Correct Answer is D

Explanation

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