A nurse is reinforcing teaching with the caregivers of an infant who has a prescription for digoxin. Which of the following statements should the nurse make?

A. Both parents are carriers of the CF gene: Cystic fibrosis follows an autosomal recessive inheritance pattern, meaning both parents must carry one copy of the defective gene, even if they do not have the disease themselves. The child inherits one copy of the defective gene from each parent to develop CF.

B. The inheritance pattern is multifactorial: CF is not a multifactorial disease; it follows a clear recessive genetic inheritance pattern.

C. The result is probably a genetic mutation: CF is caused by a genetic mutation, but this mutation is inherited from both parents. It is not usually a spontaneous mutation unless it occurs in the parental genetic material, which is rare.

D. Only one parent carries the CF gene: For the child to inherit CF, both parents must be carriers of the gene. If only one parent carries the gene, the child would be a carrier, not affected by the disease.

A. Keep the child home from school for at least 1 week: The child should stay home for at least 24 hours after starting antibiotics, not 1 week, to prevent spreading the infection.

B. Intramuscular injections will be required monthly: This is incorrect. Monthly intramuscular injections of penicillin are used for prophylaxis to prevent rheumatic fever, not for the treatment of acute group A β-hemolytic streptococcal infections.

C. Avoid the use of warm compresses around the head or neck: Warm compresses are not contraindicated for sore throats associated with group A strep infections unless there is an abscess or specific complication. This statement is not relevant.

D. Replace the child's toothbrush after 24 hours of taking antibiotics: The toothbrush should be replaced after 24 hours to prevent re-infection, as the child may still have bacteria in their mouth that can reintroduce the infection.