A nurse is teaching a parent about increasing vitamin C in her toddler's diet. Which of the following food choices should the nurse recommend as the best source of vitamin C?

A. Atrial fibrillation: This dysrhythmia is characterized by an irregularly irregular rhythm with absent or unidentifiable P waves, not a prolonged constant P-R interval.

B. Premature atrial complexes: PACs involve early P waves that may have a normal or slightly different P-R interval, but they do not cause a consistently prolonged P-R interval across all beats.

C. First-degree atrioventricular block: A constant P-R interval greater than 0.20 seconds indicates a first-degree AV block. The atrial impulses are delayed at the AV node, but all impulses are conducted to the ventricles, producing a regular rhythm with prolonged P-R intervals.

D. Complete heart block: In complete heart block (third-degree AV block), there is no relationship between P waves and QRS complexes. The P-R interval is variable, unlike the constant prolongation seen in first-degree AV block.

A. "I cannot be a witness for your consent to donate.": While a nurse often cannot witness the consent form to avoid a conflict of interest, this response does not directly address the client’s need for information about how to become an organ donor.

B. "Your name cannot be removed once you are listed on the organ donor list.": Clients can change their decision about organ donation at any time, and their name can be removed from the registry if they choose.

C. "Your desire to be an organ donor must be documented in writing.": Documenting consent in writing ensures legal clarity and verifies the client’s intent. Written consent is required to formalize organ donation in the medical record or donor registry.

D. "You must be at least 21 years of age to become an organ donor.": Age requirements for organ donation vary by jurisdiction, and many states allow individuals younger than 21 to register as donors, often with parental consent if under 18.