How it Works
Try Naxlex NCLEX-RN (Free-Trial)

A nurse is caring for a client ordered ceftazidime 1g IM every 6 hours. The drug comes in a vial with a powder which is reconstituted with 3mL of sterile water for a final concentration of 280 mg/mL. How many mi. will be drawn into the syringe for the dose ordered? Do not use leading zero (Round to the tenth)
Answer and Explanation

The Correct Answer is ["3.6"]

Given:

Desired dose: Ceftazidime 1 g IM every 6 hours

Available concentration: Ceftazidime 280 mg/mL

 

To find:

Volume to administer (in mL)

 

Step 1: Convert desired dose to milligrams

1 gram (g) is equal to 1000 milligrams (mg).

Multiply by 1000:

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

Desired dose (mg) = 1 g x 1000 = 1000 mg

 

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:

(1000 mg) / (280 mg/mL) = Volume to administer

 

Step 4: Simplify

To simplify, we can invert the denominator and multiply:

(1000 mg) x (1 mL / 280 mg) = Volume to administer

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

(1000 x 1 mL) / 280 = Volume to administer

 

Step 5: Calculate

Performing the multiplication and division, we get:

1000 mL / 280 = Volume to administer

3.57 mL ≈ Volume to administer

 

Step 6: Round to the nearest tenth

3.6mL


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is {"dropdown-group-1":"C","dropdown-group-2":"D"}

Explanation

Uterine rupture: A client in active labor with a history of prior vaginal birth is at risk for uterine rupture, particularly when experiencing intense contractions and increasing pelvic pressure. While previous vaginal delivery lowers the risk compared to a history of cesarean section, prolonged or strong contractions can still contribute to uterine rupture, especially if there is an undiagnosed uterine scar or excessive uterine stress.

Increasing pelvic pressure: The client reports increasing pelvic pressure despite receiving an epidural, which can be a sign of impending uterine rupture. While pelvic pressure is expected during labor, a sudden or intense sensation, particularly in the setting of strong contractions and rapid cervical dilation, warrants close monitoring.

Correct Answer is ["5"]

Explanation

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

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register