Final answer:
The main difference between cidal and static drugs is their method of action; cidal drugs kill microbes, whereas static drugs inhibit their growth without killing them. The choice between them depends on the infection type and patient's immune status, with considerations for dosage and side effects.
Step-by-step explanation:
The difference between cidal and static drugs is their method of action. Cidal drugs, such as bactericides, are agents that kill their target microbes, while static drugs, like bacteriostatics, inhibit the growth of these organisms without killing them. This action is reversible, and bacterial growth can resume once the drug is eliminated.
The choice between using a cidal or static drug depends on various factors including the type of infection and the patient's immune status. For a patient with compromised immunity or in severe infections, bactericidal drugs are necessary to ensure effective treatment. Additionally, the dosage and route of administration are crucial to achieve therapeutic levels at the infection site while minimizing potential side effects.