A nurse is preparing to administer 4,000 units of heparin subcutaneously to a client who has deep-vein thrombosis.
Available is heparin 10,000 units/mL.
How many mL of heparin should the nurse administer? (Round the answer to the nearest) tenth.
Use a leading zero if it applies.
Do not use a trailing zero.) mL.
The Correct Answer is ["0.4"]
To calculate the amount of heparin to administer, use the formula:
mL of heparin=units available units ordered×1mL available
Substituting the values given in the question, we get:
mL of heparin=100004000×11=0.4
Therefore, the nurse should administer 0.4 mL of heparin.
Normal ranges for heparin therapy vary depending on the condition being treated and the laboratory method used to measure APTT.
A general range is 60 to 80 seconds or 1.5 to 2.5 times the control value.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Laryngeal edema is a sign of a severe allergic reaction to amoxicillin that can cause difficulty breathing and may be life threatening.
The nurse should stop the medication and call for emergency assistance. Choice B is wrong because nausea is a common side effect of amoxicillin, not an allergic reaction.
Choice C is wrong because insomnia is not related to amoxicillin use. Choice D is wrong because cardiac dysrhythmia is not a typical symptom of an allergic reaction to amoxicillin.
It may be caused by other factors, such as underlying heart disease or electrolyte imbalance.
Correct Answer is C
Explanation
Lithium can cause hyponatremia by increasing the secretion of antidiuretic hormone and reducing the renal clearance of sodium.
Strenuous exercise can also cause hyponatremia by increasing sweat loss and fluid intake. Therefore, a client who is taking lithium and starting a new exercise program is at risk of developing hyponatremia.
Choice A is wrong because hypomagnesemia is not a common side effect of lithium or exercise.
Choice B is wrong because hypocalcemia is not a common side effect of lithium or exercise.
Choice D is wrong because hypokalemia is not a common side effect of lithium or exercise.
However, lithium can interact with some diuretics that can cause hypokalemia, so the client should avoid taking these drugs without consulting their doctor. Normal ranges for electrolytes are:
Sodium: 135-145 mmol/L
Magnesium: 0.7-1.1 mmol/L
Calcium: 2.1-2.6 mmol/L
Potassium: 3.5-5.0 mmol/L
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