Final answer:
Penicillin G is classified as a pregnancy category B drug, meaning it's considered safe for use during pregnancy when benefits justify potential risks.
Step-by-step explanation:
Penicillin G, which is prescribed to the patient for intravenous administration every 4 hours, is a narrow-spectrum antibiotic used in the treatment of various bacterial infections. It belongs to the pregnancy class B according to the FDA, which indicates that there is no evidence of risk in humans based on animal reproduction studies.
There are no adequate and well-controlled studies in pregnant women. However, it has been generally considered safe to use during pregnancy, especially when the benefits outweigh any potential risks. As the patient's GBS results were lost.
It seems that the administration of Penicillin G IV is a precautionary measure often taken to prevent potential neonatal Group B Streptococcus infections, which can be serious. In summary, Penicillin G is commonly used to treat different infections, including listeriosis, syphilis, and meningitis, with a good record of effectiveness and low resistance.