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Chapter 25: Problem 42

Order: Erythromycin \(300 \mathrm{mg}\) p.o. q6h.

Short Answer

Expert verified
The total daily dosage of Erythromycin is 1200 mg.

Step by step solution

01

Identify the Dosage Per Administration

Erythromycin is prescribed at a dosage of 300 mg per administration. Since the order is given as 'p.o., q6h', which means per oral every 6 hours, each time the medication is taken, the patient will consume 300 mg.
02

Determine Frequency of Administration in 24 Hours

Since 'q6h' means every 6 hours, we need to calculate how many times the medication will be administered in 24 hours. Divide 24 hours by 6 hours to get the number of doses: \( \frac{24}{6} = 4 \). Therefore, the medication will be taken 4 times a day.
03

Calculate Total Daily Dosage

Multiply the dosage per administration by the number of doses per day to find the total daily dosage: \( 300 \, \text{mg/dose} \times 4 \, \text{doses/day} = 1200 \, \text{mg/day} \). Therefore, the total daily dosage is 1200 mg.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Understanding Medication Administration
Medication administration is crucial for effective healthcare. It involves giving the correct medication to a patient at the proper time and in the right dose. Here, the administration is "p.o.", an abbreviation for the Latin term "per os," meaning "by mouth". This indicates that the medication is to be taken orally, which is often the most convenient method for patients. Ensuring the correct route of administration is important for the medication's effectiveness and the patient's safety. By administering the medication as prescribed, healthcare providers help ensure that the medication works properly without causing unnecessary side effects.
Frequency of Medication
The frequency of medication refers to how often a patient is supposed to take the medication. In the original order, the medication is to be taken "q6h", meaning every 6 hours. This frequency is designed to maintain the right level of the medication in the patient's bloodstream throughout the day. Frequent ingestion of smaller doses can be more effective than taking a large dose all at once. Understanding the frequency helps patients and caregivers avoid missed doses or overdoses. A practical tip is to set reminders or alarms, ensuring the medication is taken at the correct times.
Calculating Total Daily Dosage
The total daily dosage is the sum of all doses taken in a single day. This gives the overall amount of medication consumed and is vital for avoiding overmedication or underdosing. In the exercise, the patient takes 300 mg of Erythromycin per dose, and with a frequency of "q6h", they take this dose 4 times a day. That leads to a calculation:
  • Each dose: 300 mg
  • Number of doses: 4 per day
  • Total daily dosage: \( 300 \, \text{mg} \times 4 = 1200 \, \text{mg/day} \)
This ensures the patient receives enough of the medication to be effective over the course of the day, reducing the risk of infection and improving recovery times.

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Most popular questions from this chapter

Order: Dilantin \(62.5 \mathrm{mg}\) p.o. b.i.d. Available: Dilantin oral suspension labeled \(125 \mathrm{mg}\) per \(5 \mathrm{~mL}\) ____________

Vibramycin \(50 \mathrm{mg}\) p.o. \(\mathrm{q} 12 \mathrm{~h}\) is ordered for a child weighing \(30 \mathrm{lb}\). The recommended dosage is 2.2-4.4 \(\mathrm{mg} / \mathrm{kg} /\) day in two divided doses. Is the dose ordered safe? (Prove mathematically)

A child weighing \(20 \mathrm{~kg}\) has an order for \(2 \mathrm{mg}\) IV of a medication at \(10 \mathrm{AM}\) in \(100 \mathrm{~mL}\) D5W. The normal daily dosage is \(0.05 \mathrm{mg} / \mathrm{kg}\). Determine if the dosage ordered is within normal range, and state your course of action.

Order: Ferrous sulfate \(45 \mathrm{mg}\) p.o. every day. Available: Ferrous sulfate drops \(15 \mathrm{mg}\) per \(0.6 \mathrm{~mL}\) __________

Streptomycin sulfate \(400 \mathrm{mg}\) IM daily is ordered for a child weighing \(35 \mathrm{~kg}\). The recommended dosage is 20 to \(40 \mathrm{mg} / \mathrm{kg} /\) day once daily. a. Is the dosage ordered safe? (Prove mathematically.) b. A \(1-\mathrm{g}\) vial of streptomycin sulfate is available in powdered form with the following instructions: Dilution with \(1.8 \mathrm{~mL}\) of sterile water will yield \(400 \mathrm{mg}\) per mL. How many milliliters will you need to administer the ordered dosage? Calculate the dosage if the order is safe.
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