The nurse counsels a female patient who has been diagnosed with a sexually transmitted infection (STI). Which interventions should the nurse promote? Select all that apply.

Sexually transmitted infections involve pathogen transmission through mucosal exposure, requiring antimicrobial therapy and partner management. Effective control includes barrier protection and simultaneous treatment to prevent reinfection, complications such as pelvic inflammatory disease, and ongoing community transmission. Rationale: A. Intrauterine devices provide contraception but do not protect against STI transmission. In active infection, insertion may increase risk of ascending infection. Lack of barrier protection and potential for infection spread make this inappropriate. B. Frequent douching disrupts protective vaginal flora and alters pH, increasing susceptibility to infections and facilitating pathogen ascent. It does not treat or prevent STIs. Presence of flora disruption and increased infection risk makes this harmful. C. Condom use provides a physical barrier that reduces exposure to infected secretions during sexual activity. It significantly lowers transmission risk. Presence of barrier protection and decreased pathogen exposure makes this a key intervention. D. Treating the patient with appropriate antimicrobial therapy eradicates the causative organism and prevents progression and complications. Prompt therapy is essential. Presence of targeted treatment and prevention of disease progression supports this. E. Treating sexual partners prevents reinfection and interrupts transmission cycles within the population. Untreated partners act as reservoirs. Presence of partner therapy and reduction of reinfection risk makes this necessary.