A nurse in a clinic is caring for a client who has recently begun taking warfarin. The nurse is reviewing potential drug and food interaction risks and should instruct the client to avoid which of the following?

A. The laboratory values are the same as the previous test values: This is unlikely in DIC. In an acute episode of DIC, there is usually a significant disturbance in coagulation values due to the consumption of clotting factors and the development of clotting abnormalities.

B. The laboratory values are within the expected reference range: In DIC, the coagulation values are usually not within the expected reference range. Instead, they are prolonged, reflecting the imbalance in the coagulation system.

C. The laboratory values are prolonged: This is the correct answer. In DIC, the PT, aPTT, and INR are prolonged because the coagulation factors are being consumed in the process of widespread clot formation.

D. The laboratory values are decreased: This is not typical for DIC. In DIC, the issue is not a decrease in clotting factors but rather their consumption, leading to an overall imbalance in the coagulation system.

A. Bradypnea: Bradypnea refers to abnormally slow breathing. In the context of postoperative atelectasis and hypoxia, the client is more likely to exhibit tachypnea (rapid breathing) as the body attempts to compensate for reduced oxygen levels.

B. Bradycardia: Bradycardia is an abnormally slow heart rate. While hypoxia can lead to changes in heart rate, it is more common to observe tachycardia (increased heart rate) as a compensatory response to decreased oxygen levels.

C. Intercostal retractions: Intercostal retractions occur when the muscles between the ribs pull inward during inspiration. In a client with atelectasis and hypoxia, increased respiratory effort may result in intercostal retractions as the body tries to enhance airflow and improve oxygenation.

D. Lethargy: Lethargy refers to a state of drowsiness or fatigue. While hypoxia can lead to lethargy, it is not a specific respiratory manifestation. Other respiratory signs, such as increased respiratory rate and retractions, are more likely to be observed.