Final answer:
The true statements regarding WHO principles of pharmacologic management for the pediatric patient are providing a step-ladder approach, dosing at regular intervals, and individualizing treatment. Oral administration is generally the most convenient for home use of antimicrobials.
Step-by-step explanation:
The World Health Organization (WHO) principles for pharmacologic management in pediatrics emphasize a methodical approach, with treatments tailored to each individual child's needs. Considering these principles, the statements that are true include:
- Providing a step-ladder approach.
- Providing dosing at regular intervals.
- Individualizing and adapting treatment for each child.
Concerning pain management specifically, which appears to be the context for one of the options, the WHO does recommend a step-ladder approach for analgesia, starting with non-opioids and moving to stronger options like morphine if necessary. The use of the parenteral route for pain therapies is not exclusive and depends on the clinical situation, as oral and other routes can also be effective and are often more convenient, especially for home use. As for routine antimicrobial administration to treat a systemic infection at home, the oral route (A) is typically the most appropriate and convenient choice, assuming the patient can tolerate the medication and the condition does not require immediate and high blood levels of the drug that other routes might provide.