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Warfarin INR Goals NCLEX Priority Sheet

Warfarin questions usually test INR monitoring, bleeding assessment, vitamin K teaching, pregnancy risk, interacting drugs, and what to do when INR is too high.

Study aid - not medical advice. Not a clinical decision tool. For NCLEX pharmacology review only.

Priority 1

What to do first

1. Check INR before giving warfarin when ordered.
2. Assess for bleeding: gums, urine, stool, bruising, headache, mental status change, or oozing IV sites.
3. Review new antibiotics, NSAIDs, supplements, alcohol changes, and diet changes.

Safety

Hold If

Notify the provider and follow protocol for active bleeding, supratherapeutic INR, major fall/head injury, severe headache, neurologic change, or black/tarry stools.

Do not independently give vitamin K, PCC, or FFP. Anticipate ordered reversal therapy when clinically indicated.

Monitoring

Labs to Watch

PT/INR: common NCLEX target for many indications is INR 2.0-3.0. Some mechanical valve contexts use higher targets, often around 2.5-3.5.

Watch CBC, hemoglobin/hematocrit, liver function when relevant, and stool/urine bleeding signs.

Mini Quiz

Mini Quiz: Test Your Recall

Think through the answer before you reveal the rationale.

Question: A patient on warfarin has INR 5.4 and reports black stools. What should the nurse do first?
Review Details

NCLEX Review Notes

What Is the Goal INR for Warfarin?
For many common indications, the goal INR is 2.0-3.0.

Some mechanical heart valve contexts may use a higher target, often around 2.5-3.5, depending on valve type and provider order.

The ordered patient-specific target and current protocol control clinical care. Do not apply a generic range without checking the order.
Memory Rule
Warfarin = Watch INR.

It is oral, slower onset, monitored by PT/INR, and reversed with vitamin K as ordered. It crosses the placenta, so pregnancy is a major safety issue.

Compare warfarin vs heparin →
NCLEX Trap
Trap: choose between increasing green vegetables or avoiding them forever.

Safer answer: keep vitamin K intake consistent. Sudden increases or decreases can change INR response.
Bleeding Signs
Bruising, gum bleeding, epistaxis, hematuria, melena, heavy menstrual bleeding, oozing from lines, severe headache, dizziness, or mental status change should trigger bleeding assessment and provider notification.
References
Saunders Comprehensive Review for the NCLEX-RN Examination; Davis's Drug Guide for Nurses; DailyMed warfarin sodium labeling; anticoagulation guideline references.

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