When preparing a teaching plan for a female adolescent with a sexually transmitted infection (STI), the nurse plans to address the fact that the adolescent is at increased risk for cervical cancer. Which STI would the adolescent most likely have?

A. "It is normal for your bowel movements to be black.": Black stools may indicate gastrointestinal bleeding, a potential adverse effect of ibuprofen. This finding is not normal and should be reported immediately to the healthcare provider.

B. "Take the medication on an empty stomach.": Ibuprofen can irritate the gastric mucosa and increase the risk of ulcers or bleeding. It should always be taken with food or milk to minimize gastrointestinal discomfort and protect the stomach lining.

C. "Add an aspirin to the regimen if you do not get relief right away.": Combining ibuprofen with aspirin increases the risk of gastrointestinal bleeding and does not enhance pain control. Only one NSAID should be used at a time unless specifically prescribed.

D. "Start taking the medication before you first get your period.": NSAIDs like ibuprofen are most effective when started 1–2 days before menstruation or at the onset of symptoms, as they inhibit prostaglandin synthesis, reducing uterine contractions and menstrual pain.

A. Initiate chelation therapy with deferoxamine: Deferoxamine is used to treat iron toxicity, not salicylate poisoning. It binds excess iron for renal excretion, so it has no therapeutic effect in cases of acetylsalicylic acid (aspirin) overdose.

B. Perform gastric lavage with activated charcoal: Activated charcoal binds salicylates in the gastrointestinal tract, preventing further absorption into the bloodstream. Gastric lavage followed by charcoal administration is effective when performed soon after ingestion, helping reduce systemic toxicity.

C. Administer N-acetylcysteine: N-acetylcysteine is the antidote for acetaminophen (paracetamol) toxicity. It replenishes hepatic glutathione and protects the liver, but it has no role in neutralizing salicylate poisoning.

D. Induce vomiting with syrup of ipecac: Inducing vomiting is no longer recommended because it can cause aspiration and delay more effective treatments like activated charcoal or gastric lavage. Controlled decontamination under medical supervision is the safer approach.