A charge nurse is supervising a newly hired nurse who is instructing a client about how to use a walker. For which of the following actions should the charge nurse intervene?

Choice A reason: Percussion precedes palpation to assess abdominal resonance and organ size without altering bowel motility. Performing it last risks inaccurate findings, as palpation may stimulate peristalsis, changing resonance patterns. This sequence ensures reliable detection of abnormalities like organomegaly or fluid accumulation in the abdomen.
Choice B reason: Auscultation is done before palpation to capture natural bowel sounds. Manipulation during palpation can alter peristalsis, affecting auscultatory findings. Early auscultation ensures accurate detection of hypoactive or hyperactive bowel sounds, critical for diagnosing conditions like ileus or obstruction in abdominal assessments.
Choice C reason: Palpation is the final step, following inspection, auscultation, and percussion, to assess for tenderness or masses. This sequence prevents manipulation from altering earlier findings, ensuring accurate identification of abdominal abnormalities like peritonitis or organ enlargement, critical for a comprehensive physical examination.
Choice D reason: Inspection is the first step, providing a visual baseline of abdominal appearance, such as distension or scars. Performing it last misses initial cues guiding subsequent steps. Early inspection ensures no manipulation affects visual assessment, vital for identifying external signs of underlying abdominal pathology.

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.