A client is ordered ampicillin 0.5 g po every 6 hours. On hand are ampicillin capsules labeled 250mg. How many capsules will the nurse administer for single dose?

A) Decrease the heart rate of the fetus:
Lying on the left side can sometimes help improve fetal oxygenation, especially if there is a concern about reduced blood flow from compression of the inferior vena cava, which can occur when the mother lies on her back. However, the primary rationale for this position is to prevent supine hypotension, not specifically to decrease fetal heart rate. In fact, side-lying can promote better oxygen exchange, which can indirectly benefit the fetal heart rate.

B) Aid the women while she pushes:
While a left-side lying position may offer comfort during labor and can help with uterine positioning, it is not specifically intended to aid in the pushing phase. Positions such as squatting or hands-and-knees are generally more helpful during the pushing phase because they can facilitate effective pushing and help the baby descend into the birth canal. The left-side position is more about circulation and preventing hypotension.

C) Prevent supine hypertension:
Supine hypotension occurs when the pregnant woman lies flat on her back, which can compress the inferior vena cava and reduce blood return to the heart. This leads to a drop in blood pressure and can compromise both maternal and fetal circulation. The left-side position is recommended because it helps to prevent this compression and allows optimal blood flow to both the mother and fetus, improving oxygenation and circulation.

D) Prevent the client from falling out of bed:
While lying on the left side may make the woman feel more stable, the primary reason for this position is to prevent supine hypotension, not to prevent her from falling out of bed. The nurse would ensure safety by using appropriate bed rails and monitoring, but the primary concern is supporting optimal circulation, not preventing falls.

Given:

Desired dose: Digoxin 0.25 mg PO daily

Available concentration: Digoxin 500 mcg/10 mL

To find:

Volume to administer (in mL)

Step 1: Convert desired dose to micrograms

We know that 1 milligram (mg) is equal to 1000 micrograms (mcg). Therefore, to convert the desired dose from mg to mcg, we multiply by 1000:

Desired dose (mcg) = Desired dose (mg)x 1000

Desired dose (mcg) = 0.25 mg x 1000 = 250 mcg

Step 2: Set up the proportion

We can use the following proportion to solve the problem:

(Desired dose) / (Available concentration) = Volume to administer

Step 3: Substitute the values

Plugging in the given values, we get:

(250 mcg) / (500 mcg/10 mL) = Volume to administer

Step 4: Simplify

To simplify, we can invert the denominator and multiply:

(250 mcg) x (10 mL / 500 mcg) = Volume to administer

The "mcg" units cancel out, leaving us with:

(250 x 10 mL) / 500 = Volume to administer

Step 5: Calculate

Performing the multiplication and division, we get:

2500/ 500 = Volume to administer

5 mL = Volume to administer