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To find the volume of amoxicillin solution the nurse needs to administer, we can divide the desired dose (300 mg) by the concentration of the solution (250 mg/5 mL).

Here's the calculation:

Amoxicillin volume (mL) = Desired dose (mg) / Concentration (mg/mL) Amoxicillin volume (mL) = 300 mg / 250 mg/5 mL

Since we're dividing by a fraction, it's mathematically equivalent to multiply by the reciprocal of the fraction. The reciprocal of 250 mg/5 mL is 5 mL/250 mg.

Amoxicillin volume (mL) = 300 mg * (5 mL / 250 mg)

Cancel out the milligrams (mg) units:

Amoxicillin volume (mL) = 300 mg / 250 mg * 5 mL

Amoxicillin volume (mL) = 1.2 mL (rounded to one decimal place)

However, since we are dealing with medication, it's best to round to the nearest whole number for accuracy in administering the dose.

Therefore, the nurse should administer 6.0 mL of amoxicillin oral solution.

A. Trombin (Evithrom): Incorrect: Thrombin (also known as factor IIa) is not typically used as a hemostatic drug. It is involved in the final step of the coagulation cascade, converting fibrinogen to fibrin to form a stable clot. However, it is not administered directly as a medication.

B. Aminocaproic acid (Amicar): Aminocaproic acid is an antifibrinolytic agent commonly used to control bleeding. It works by inhibiting the breakdown of fibrin clots, thus promoting hemostasis. It is particularly useful in situations where excessive bleeding occurs due to impaired clot dissolution. However, tranexamic acid is generally considered more potent and has a longer-lasting effect, making it the preferred choice in many situations.

C. Aspirin: Incorrect: Aspirin is an antiplatelet medication that inhibits platelet aggregation. While it can reduce the risk of clot formation, it is not primarily used for controlling postoperative bleeding.

D. Tranexamic acid (Cyklokapron): Correct: Tranexamic acid is another antifibrinolytic agent that helps prevent excessive bleeding. It works by blocking the breakdown of fibrin clots. Tranexamic acid is commonly used in surgical settings to manage bleeding during and after procedures.