# A 67-year-old client with a mechanical mitral valve takes warfarin. Amiodarone was started 4 days ago. The client now reports weakness and new left flank and back pain. Highlight the findings in the emergency record that require immediate action for suspected major anticoagulant-related bleeding.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=522047&lang=en  
> language: en  
> subject: Adverse Effects/Contraindications/Interactions  
> category: PPT

## Question

A 67-year-old client with a mechanical mitral valve takes warfarin. Amiodarone was started 4 days ago. The client now reports weakness and new left flank and back pain. Highlight the findings in the emergency record that require immediate action for suspected major anticoagulant-related bleeding.

Emergency Record
A 67-year-old client with a mechanical mitral valve takes warfarin 4 mg each evening. Amiodarone was started 4 days ago for atrial fibrillation. The client reports new left flank and back pain and weakness. Blood pressure is 84/48 mm Hg, heart rate is 106/min, respiratory rate is 22/min, and SpO2 is 97 percent on room air. Hemoglobin is 7.6 g/dL, down from 11.9 g/dL, INR is 6.8, platelets are 214,000/mm3, creatinine is 1.0 mg/dL, and the abdomen has no visible bruising.

## Explanation

Hypotension, new flank and back pain, a large hemoglobin decrease, INR 6.8, and recent amiodarone initiation indicate life-threatening warfarin-associated bleeding. The mechanical mitral valve also identifies a continuing thrombotic indication that must be addressed after hemostasis.

## In-depth explanation

Quick answer
Treat the pattern as major warfarin-associated hemorrhage with shock.

Why this is correct
Amiodarone can markedly potentiate warfarin. New pain, hypotension, falling hemoglobin, and a very high INR require immediate bleeding control. The mechanical valve matters because anticoagulation cannot be forgotten after the acute bleed is controlled.

Easy analogy or mental picture
One dial has turned anticoagulation too high while another warning says the valve still needs long-term protection.

Memory hook
Pressure down, hemoglobin down, INR up: stop and reverse the bleed.

NCLEX decision rule
Recognize severity first, then preserve the reason for anticoagulation as a later interdisciplinary decision.

Why the other choices are wrong
A therapeutic heart rate, clear lungs, and an intact valve sound do not make an expanding internal hemorrhage stable.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
3DailyMed: KCENTRAUrgent VKA reversal for acute major bleeding with concurrent vitamin K
4ACC/AHA 2020 Valvular Heart Disease GuidelineVKA therapy for mechanical valves, pregnancy counseling, and monitored anticoagulation planning

## Clinical scenario

Emergency anticoagulation assessment
Distinguish findings that signal active internal bleeding or excessive warfarin effect from findings that describe the continuing indication or do not exclude internal hemorrhage.

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