Final answer:
The condition of acute poststreptococcal glomerulonephritis could have been prevented by completing the antibiotic course.
Step-by-step explanation:
The nurse should tell the client that the condition of acute poststreptococcal glomerulonephritis could have been prevented by completing the antibiotic course.
Streptococcal infections, such as strep throat, can lead to serious sequelae if left untreated. Acute glomerulonephritis is a nonsuppurative (without the production of pus) sequelae that can occur after a streptococcal infection. By completing the antibiotic course for the streptococcal throat infection, the client would have eliminated the bacteria from the body, reducing the risk of developing glomerulonephritis.