A 67-year-old client with a mechanical mitral valve takes warfarin. Four days after amiodarone was started, the client develops weakness, new flank and back pain, BP 84/48 mm Hg, hemoglobin 7.6 g/dL from 11.9 g/dL, and INR 6.8. Classify each finding by the medication decision it supports. More than one column may apply.
Matrix
Choose your responses, then check the answer.
Explanation
The hemoglobin fall and hypotension support active major bleeding; INR 6.8 and recent amiodarone support excessive anticoagulant effect; the mechanical mitral valve supports a continuing high-risk anticoagulation indication.
Quick answer Sort cues into bleeding severity, excessive anticoagulant effect, and thrombotic indication.
Why this is correct Warfarin harm cannot be judged from INR alone. Hemodynamics and hemoglobin establish severity, recent interacting therapy explains the excessive effect, and the mechanical valve explains why the post-bleed plan requires specialist coordination.
Easy analogy or mental picture Use three folders: how badly the client is bleeding, why anticoagulation intensified, and why clot prevention still matters.
Memory hook Bleed, interaction, indication: keep all three visible.
NCLEX decision rule Analyze each cue by the immediate or later medication decision it changes.
Why the other choices are wrong Normal oxygen saturation and no external bruising cannot exclude a retroperitoneal hemorrhage.
References
1DailyMed: Warfarin SodiumMajor bleeding, INR monitoring, pregnancy and mechanical-valve risk, and therapy individualization
2DailyMed: Amiodarone HydrochlorideWarfarin potentiation, serious bleeding risk, dose review, and close prothrombin-time monitoring
3ACC/AHA 2020 Valvular Heart Disease GuidelineVKA therapy for mechanical valves, pregnancy counseling, and monitored anticoagulation planning
Independent cue analysisSeparate evidence of major bleeding, excessive warfarin exposure, and the continuing thrombotic indication so the immediate and post-hemostasis plans are both visible.