A nurse is teaching about preventing constipation to a client who has a new prescription for oxycodone. Which of the following statements by the client indicates an understanding of the teaching?

Choice A reason: Encouraging ambulation only after 48 hours delays recovery, as early ambulation (within 12-24 hours) promotes circulation, prevents thromboembolism, and aids bowel function post-abdominal surgery. This instruction is incorrect, as it contradicts evidence-based protocols for early mobilization to enhance recovery.
Choice B reason: Instructing clients to avoid coughing is inappropriate, as coughing and deep breathing prevent pulmonary complications like atelectasis post-abdominal surgery. Splinting the incision during coughing reduces discomfort and dehiscence risk, making this instruction incorrect as it increases respiratory complications.
Choice C reason: Monitoring for signs of infection, such as fever or redness, is critical post-abdominal surgery to detect complications early. Infections can delay healing and lead to sepsis. Regular assessment ensures timely intervention, aligning with evidence-based postoperative care, making this the correct information to include.
Choice D reason: Removing surgical dressings within 12 hours is not standard, as dressings typically remain for 24-48 hours or per surgeon orders to protect the wound and reduce infection risk. Premature removal increases contamination risk, making this instruction incorrect for postoperative care.

Choice A reason: Bleeding time assesses platelet function, not warfarin’s anticoagulant effect. Warfarin inhibits vitamin K-dependent clotting factors, unrelated to platelets. Monitoring bleeding time does not reflect therapeutic anticoagulation levels, making it irrelevant for adjusting warfarin doses to prevent thrombosis or bleeding.
Choice B reason: Factor VIII, deficient in hemophilia A, is not affected by warfarin, which targets vitamin K-dependent factors (II, VII, IX, X). Measuring Factor VIII does not indicate warfarin’s efficacy, as it is unrelated to the drug’s mechanism, making it unsuitable for dose monitoring.
Choice C reason: aPTT monitors heparin’s effect on the intrinsic clotting pathway, not warfarin’s action on vitamin K-dependent factors. Warfarin requires INR for therapeutic monitoring, as aPTT is insensitive to its effects, making it inappropriate for assessing warfarin’s anticoagulation range in patients.
Choice D reason: INR standardizes prothrombin time, measuring warfarin’s effect on vitamin K-dependent clotting factors. It ensures therapeutic anticoagulation (e.g., INR 2-3), preventing thrombosis or bleeding. INR is the gold standard for warfarin monitoring, guiding dose adjustments for safe and effective therapy.