Final answer:
The drug Meperidine (Demerol) given intravenously has a peak action of 3-4 minutes, and when given intramuscularly it peaks at 30 minutes. The answer to the student's question is option (b) 3-4; 30. Consideration of drug administration method is important for managing labor pain effectively.
Step-by-step explanation:
The question asks about the peak action times for Meperidine (Demerol) when given to mothers in labor. The drug can be administered either intravenously, which typically results in a faster peak of action, or intramuscularly, which takes longer to reach peak action.
According to the information provided, when Meperidine is administered intravenously, it has a 3-4 minute peak of action, while if it is given intramuscularly, it has a 30 minute peak of action. Thus, the correct answer to this question would be option (b) 3-4; 30.
Understanding the timing of drug peak action is critical in the context of labor, as it may take minutes, hours, or days, and can be different for women who have given birth before, with subsequent labors generally being shorter. Additionally, factors such as the method of drug administration, as shown by the plasma concentration graph in Figure 14.7, can significantly influence how quickly and effectively the medication works.
When determining the dosage of a drug, one should consider factors like the patient's weight, age, kidney and liver function, concurrent medications, and the severity of the condition being treated. Common side effects of drugs can include nausea, dizziness, drowsiness, and allergic reactions, and can vary based on the individual's health, dosage, and duration of drug use.